Fundies.
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Segment disclosures

Company overview

ENCANA CORP

Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.

Revenue · Reported segment facts

88 dimension combinations 581 retained observations 21 reported periods

Counts describe retained dimensioned rows only. Periods and members can change across reports, and this view does not infer missing values or expected segment totals.

Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30467000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-301406000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30459000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30939000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31480000000 RestatedUSD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-311832000000 RestatedUSD20190228Open filing evidence
2018-07-01 – 2018-09-30464000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-301339000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30457000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30875000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31418000000 RestatedUSD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-311203000000 RestatedUSD20190228Open filing evidence
2017-01-01 – 2017-09-30816000000 RestatedUSD20181106Open filing evidence
2017-01-01 – 2017-06-30553000000 RestatedUSD20180802Open filing evidence
2016-01-01 – 2016-12-311081000000 RestatedUSD20190228Open filing evidence

Operating Segments · China Operations Excluding Intercompany Segment Transactions

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:ChinaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-303000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-3037000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-3021000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-3034000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-3113000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence

Operating Segments · Market Optimization Excluding Intercompany Segment Transactions

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-311201000000 RestatedUSD20190228Open filing evidence
2018-01-01 – 2018-09-30880000000 RestatedUSD20181106Open filing evidence
2018-01-01 – 2018-06-30572000000 RestatedUSD20180802Open filing evidence
2017-01-01 – 2017-12-31829000000 USD20190228Open filing evidence
2017-01-01 – 2017-09-30590000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-30376000000 USD20180802Open filing evidence
2016-01-01 – 2016-12-31607000000 RestatedUSD20190228Open filing evidence

Operating Segments · Market Optimization

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-09-30869000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-06-30575000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31326000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-09-30906000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-06-30590000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31301000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence

Operating Segments · Usa Operations Excluding Intercompany Segment Transactions

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-301133000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-303199000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-301231000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-302066000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31835000000 RestatedUSD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-312320000000 RestatedUSD20190228Open filing evidence
2018-07-01 – 2018-09-30639000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-301711000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30559000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-301072000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31513000000 RestatedUSD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-311900000000 RestatedUSD20190228Open filing evidence
2017-01-01 – 2017-09-301381000000 RestatedUSD20181106Open filing evidence
2017-01-01 – 2017-06-30937000000 RestatedUSD20180802Open filing evidence
2016-01-01 – 2016-12-311795000000 RestatedUSD20190228Open filing evidence

Natural Gas Gathering And Compression · Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=eca:NaturalGasGatheringAndCompressionMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-316000000 USD20190228Open filing evidence
2018-01-01 – 2018-09-305000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-304000000 USD20180802Open filing evidence
2018-01-01 – 2018-03-312000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-319000000 USD20190228Open filing evidence
2017-01-01 – 2017-09-307000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-304000000 USD20180802Open filing evidence
2016-01-01 – 2016-12-317000000 USD20190228Open filing evidence

Natural Gas Gathering And Compression · Operating Segments · Usa Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=eca:NaturalGasGatheringAndCompressionMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-311000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-314000000 USD20190228Open filing evidence
2018-01-01 – 2018-09-304000000 USD20181106Open filing evidence
2017-01-01 – 2017-12-3111000000 USD20190228Open filing evidence
2017-01-01 – 2017-09-3011000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-3010000000 USD20180802Open filing evidence
2016-01-01 – 2016-12-3124000000 USD20190228Open filing evidence

Natural Gas Gathering And Compression · Canadian Operations Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=eca:NaturalGasGatheringAndCompressionMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-301000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-302000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-303000000 USD20181106Open filing evidence

Natural Gas Gathering And Compression · Usa Operations Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=eca:NaturalGasGatheringAndCompressionMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-304000000 USD20181106Open filing evidence
2017-07-01 – 2017-09-301000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-304000000 USD20180802Open filing evidence

Natural Gas Gathering And Processing · Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=eca:NaturalGasGatheringAndProcessingMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-302000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-304000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-302000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-302000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-07-01 – 2018-09-301000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-305000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-302000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-304000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence

Natural Gas Gathering And Processing · Operating Segments · China Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=eca:NaturalGasGatheringAndProcessingMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:ChinaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-07-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence

Natural Gas Gathering And Processing · Operating Segments · Usa Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=eca:NaturalGasGatheringAndProcessingMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30-1000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-302000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-302000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-303000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-07-01 – 2018-09-304000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-304000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence

Natural Gas Gathering And Processing · Market Optimization Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=eca:NaturalGasGatheringAndProcessingMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-07-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence

Oil · Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-306000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-305000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-305000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-303000000 USD20180802Open filing evidence

Oil · Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-303000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-306000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-302000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-303000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-311000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-317000000 USD20190228Open filing evidence
2018-07-01 – 2018-09-301000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-306000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-302000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-305000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-313000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-317000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-3126000000 USD20190228Open filing evidence

Oil · Operating Segments · China Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:ChinaOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-303000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-3037000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-3021000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-3034000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-3113000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence

Oil · Operating Segments · Market Optimization Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-3084000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-3050000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-30103000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-3088000000 USD20180802Open filing evidence

Oil · Operating Segments · Market Optimization Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-3189000000 USD20190228Open filing evidence
2017-01-01 – 2017-12-31115000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-31124000000 USD20190228Open filing evidence

Oil · Operating Segments · Usa Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-301579000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-30989000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-30944000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-30625000000 USD20180802Open filing evidence

Oil · Operating Segments · Usa Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30905000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-302461000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30947000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-301556000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31609000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-312099000000 USD20190228Open filing evidence
2018-07-01 – 2018-09-30590000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-301579000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30516000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30989000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31473000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-311373000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-311026000000 USD20190228Open filing evidence

Oil · Canadian Operations Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-301000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-302000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-302000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-301000000 USD20180802Open filing evidence

Oil · Market Optimization Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3034000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3028000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-3015000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-3051000000 USD20180802Open filing evidence

Oil · Market Optimization Excluding Intercompany Segment Transactions · Operating Segments · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Statement Business Segments · Consolidation Items · Major Customers

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30107000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-30205000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-3038000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-3098000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-3160000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-3034000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-3084000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-3028000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-3050000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-3122000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence

Oil · Usa Operations Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=eca:OilMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-30590000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-30516000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-30319000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-30324000000 USD20180802Open filing evidence

Natural Gas Liquids Reserves · Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-30655000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-30396000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-30300000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-30193000000 USD20180802Open filing evidence

Natural Gas Liquids Reserves · Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30225000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-30659000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30230000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30434000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31204000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-31870000000 USD20190228Open filing evidence
2018-07-01 – 2018-09-30259000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-30655000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30216000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30396000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31180000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-31485000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-31300000000 USD20190228Open filing evidence

Natural Gas Liquids Reserves · Operating Segments · China Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:ChinaOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-07-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence

Natural Gas Liquids Reserves · Operating Segments · Market Optimization Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-306000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-305000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-3012000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-3012000000 USD20180802Open filing evidence

Natural Gas Liquids Reserves · Operating Segments · Market Optimization Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-318000000 USD20190228Open filing evidence
2017-01-01 – 2017-12-3110000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-3136000000 USD20190228Open filing evidence

Natural Gas Liquids Reserves · Operating Segments · Usa Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-30221000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-30123000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-30128000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-3078000000 USD20180802Open filing evidence

Natural Gas Liquids Reserves · Operating Segments · Usa Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-3099000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-30332000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30136000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30233000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-3197000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-31290000000 USD20190228Open filing evidence
2018-07-01 – 2018-09-3098000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-30221000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-3071000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30123000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-3152000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-31193000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-31128000000 USD20190228Open filing evidence

Natural Gas Liquids Reserves · Canadian Operations Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-30259000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-30216000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-30107000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-3098000000 USD20180802Open filing evidence

Natural Gas Liquids Reserves · Market Optimization Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-301000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-303000000 USD20180802Open filing evidence

Natural Gas Liquids Reserves · Market Optimization Excluding Intercompany Segment Transactions · Operating Segments · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Statement Business Segments · Consolidation Items · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-302000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-306000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-301000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-304000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-313000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-301000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-306000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-303000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-305000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-312000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence

Natural Gas Liquids Reserves · Usa Operations Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasLiquidsReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3098000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3071000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-3050000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-3038000000 USD20180802Open filing evidence

Natural Gas Reserves · Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-30580000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-30385000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-30498000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-30372000000 USD20180802Open filing evidence

Natural Gas Reserves · Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30150000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-30563000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30158000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30413000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31255000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-31849000000 USD20190228Open filing evidence
2018-07-01 – 2018-09-30195000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-30580000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30164000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30385000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31221000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-31680000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-31641000000 USD20190228Open filing evidence

Natural Gas Reserves · Operating Segments · China Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:ChinaOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-07-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence

Natural Gas Reserves · Operating Segments · Market Optimization Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-30793000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-30519000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-30475000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-30276000000 USD20180802Open filing evidence

Natural Gas Reserves · Operating Segments · Market Optimization Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-311109000000 USD20190228Open filing evidence
2017-01-01 – 2017-12-31704000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-31448000000 USD20190228Open filing evidence

Natural Gas Reserves · Operating Segments · Usa Operations Excluding Intercompany Segment Transactions

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-09-3092000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-3061000000 USD20180802Open filing evidence
2017-01-01 – 2017-09-30268000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-30210000000 USD20180802Open filing evidence

Natural Gas Reserves · Operating Segments · Usa Operations Excluding Intercompany Segment Transactions · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-3095000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-30276000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30105000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30181000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-3176000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-31126000000 USD20190228Open filing evidence
2018-07-01 – 2018-09-3031000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-3092000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-3029000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-3061000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-3132000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-31305000000 USD20190228Open filing evidence
2016-01-01 – 2016-12-31362000000 USD20190228Open filing evidence

Natural Gas Reserves · Canadian Operations Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-30195000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-30164000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-30126000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-30169000000 USD20180802Open filing evidence

Natural Gas Reserves · Market Optimization Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-30274000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-30246000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-30199000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-30149000000 USD20180802Open filing evidence

Natural Gas Reserves · Market Optimization Excluding Intercompany Segment Transactions · Operating Segments · Product Revenues Including Sale Of Product Purchased From Third Parties

Product Or Service · Statement Business Segments · Consolidation Items · Major Customers

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:MajorCustomersAxis=eca:ProductRevenuesIncludingSaleOfProductPurchasedFromThirdPartiesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30181000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-30640000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30206000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30459000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31253000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-30274000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-30793000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30246000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30519000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31273000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence

Natural Gas Reserves · Usa Operations Excluding Intercompany Segment Transactions · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=srt:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3031000000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3029000000 USD20180802Open filing evidence
2017-07-01 – 2017-09-3058000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-30103000000 USD20180802Open filing evidence

Intersegment Elimination · Market Optimization

Consolidation Items · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-09-30-694000000 Unit1220171109Open filing evidence
2017-01-01 – 2017-09-30-2211000000 Unit1220171109Open filing evidence
2017-04-01 – 2017-06-30-747000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-06-30-1517000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-03-31-770000000 Unit1220170504Open filing evidence
2016-01-01 – 2016-12-31-2658000000 Unit1220170227Open filing evidence
2016-07-01 – 2016-09-30-749000000 Unit1220171109Open filing evidence
2016-01-01 – 2016-09-30-1972000000 Unit1220171109Open filing evidence
2016-04-01 – 2016-06-30-621000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-06-30-1223000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-03-31-602000000 Unit1220170504Open filing evidence
2015-01-01 – 2015-12-31-3944000000 Unit1220170227Open filing evidence
2014-01-01 – 2014-12-31-6123000000 Unit1220170227Open filing evidence
2013-01-01 – 2013-12-31-5150000000 Unit1220160229Open filing evidence
2012-01-01 – 2012-12-31-3841000000 Unit1220150303Open filing evidence

Operating Segments · Natural Gas Gathering And Compression · Canadian Operations Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=eca:NaturalGasGatheringAndCompressionMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-312000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-314000000 Unit1220180503Open filing evidence

Operating Segments · Natural Gas Gathering And Compression · Usa Operations Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=eca:NaturalGasGatheringAndCompressionMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2017-01-01 – 2017-03-316000000 Unit1220180503Open filing evidence

Operating Segments · Crude Oil · Canadian Operations Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:CrudeOilMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-313000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-312000000 Unit1220180503Open filing evidence

Operating Segments · Crude Oil · Market Optimization Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:CrudeOilMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3122000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-3137000000 Unit1220180503Open filing evidence

Operating Segments · Crude Oil · Usa Operations Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:CrudeOilMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31473000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-31301000000 Unit1220180503Open filing evidence

Operating Segments · Natural Gas Liquids Reserves · Canadian Operations Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:NaturalGasLiquidsReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31180000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-3195000000 Unit1220180503Open filing evidence

Operating Segments · Natural Gas Liquids Reserves · Market Optimization Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:NaturalGasLiquidsReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-312000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-3112000000 Unit1220180503Open filing evidence

Operating Segments · Natural Gas Liquids Reserves · Usa Operations Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:NaturalGasLiquidsReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3152000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-3140000000 Unit1220180503Open filing evidence

Operating Segments · Natural Gas Reserves · Canadian Operations Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31221000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-31203000000 Unit1220180503Open filing evidence

Operating Segments · Natural Gas Reserves · Market Optimization Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31273000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-31127000000 Unit1220180503Open filing evidence

Operating Segments · Natural Gas Reserves · Usa Operations Excluding Intercompany Segment Transactions

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:ProductOrServiceAxis=us-gaap:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3132000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-31107000000 Unit1220180503Open filing evidence

Operating Segments · Canadian Operations Excluding Intercompany Segment Transactions

Consolidation Items · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31418000000 RestatedUnit1220180503Open filing evidence
2017-01-01 – 2017-03-31283000000 RestatedUnit1220180503Open filing evidence

Operating Segments · Canadian Operations

Consolidation Items · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31416000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-12-311191000000 Unit1220180226Open filing evidence
2017-01-01 – 2017-03-31280000000 Unit1220180503Open filing evidence
2016-01-01 – 2016-12-311067000000 Unit1220180226Open filing evidence
2015-01-01 – 2015-12-311822000000 Unit1220180226Open filing evidence

Operating Segments · Market Optimization Excluding Intercompany Segment Transactions

Consolidation Items · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31297000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-03-31176000000 Unit1220180503Open filing evidence

Operating Segments · Market Optimization

Consolidation Items · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31301000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-12-31863000000 Unit1220180226Open filing evidence
2017-01-01 – 2017-03-31186000000 Unit1220180503Open filing evidence
2016-01-01 – 2016-12-31646000000 Unit1220180226Open filing evidence
2015-01-01 – 2015-12-31365000000 Unit1220180226Open filing evidence

Operating Segments · Usa Operations Excluding Intercompany Segment Transactions

Consolidation Items · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31513000000 RestatedUnit1220180503Open filing evidence
2017-01-01 – 2017-03-31451000000 RestatedUnit1220180503Open filing evidence

Operating Segments · Usa Operations

Consolidation Items · Statement Business Segments

Source dimensions us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31511000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-12-311878000000 Unit1220180226Open filing evidence
2017-01-01 – 2017-03-31444000000 Unit1220180503Open filing evidence
2016-01-01 – 2016-12-311770000000 Unit1220180226Open filing evidence
2015-01-01 – 2015-12-312491000000 Unit1220180226Open filing evidence

Marketing Sales · Market Optimization

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=eca:MarketingSalesMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-09-30918000000 Unit1220171109Open filing evidence
2017-01-01 – 2017-09-302825000000 Unit1220171109Open filing evidence
2017-04-01 – 2017-06-30951000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-06-301907000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-03-31956000000 Unit1220170504Open filing evidence
2016-01-01 – 2016-12-313304000000 Unit1220170227Open filing evidence
2016-07-01 – 2016-09-30963000000 Unit1220171109Open filing evidence
2016-01-01 – 2016-09-302365000000 Unit1220171109Open filing evidence
2016-04-01 – 2016-06-30713000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-06-301402000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-03-31689000000 Unit1220170504Open filing evidence
2015-01-01 – 2015-12-314309000000 Unit1220170227Open filing evidence
2014-01-01 – 2014-12-317371000000 Unit1220170227Open filing evidence
2013-01-01 – 2013-12-315662000000 Unit1220160229Open filing evidence
2012-01-01 – 2012-12-314260000000 Unit1220150303Open filing evidence
2011-01-01 – 2011-12-316680000000 Unit1220140220Open filing evidence
2010-01-01 – 2010-12-316729000000 Unit1220130221Open filing evidence

Other Product · Canadian Division

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=eca:OtherProductMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianDivisionMember
PeriodValueUnitFiledEvidence
2012-01-01 – 2012-12-3135000000 Unit1220130221Open filing evidence
2011-01-01 – 2011-12-3143000000 Unit1220130221Open filing evidence
2010-01-01 – 2010-12-3144000000 Unit1220130221Open filing evidence

Other Product · Usa Division

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=eca:OtherProductMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaDivisionMember
PeriodValueUnitFiledEvidence
2012-01-01 – 2012-12-3124000000 Unit1220130221Open filing evidence
2011-01-01 – 2011-12-3163000000 Unit1220130221Open filing evidence
2010-01-01 – 2010-12-31119000000 Unit1220130221Open filing evidence

Crude Oil And NGL Per Barrel · Canadian Division

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=us-gaap:CrudeOilAndNGLPerBarrelMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianDivisionMember
PeriodValueUnitFiledEvidence
2012-01-01 – 2012-12-31500000000 Unit1220130221Open filing evidence
2011-01-01 – 2011-12-31453000000 Unit1220130221Open filing evidence
2010-01-01 – 2010-12-31305000000 Unit1220130221Open filing evidence

Crude Oil And NGL Per Barrel · Usa Division

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=us-gaap:CrudeOilAndNGLPerBarrelMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaDivisionMember
PeriodValueUnitFiledEvidence
2012-01-01 – 2012-12-31348000000 Unit1220130221Open filing evidence
2011-01-01 – 2011-12-31295000000 Unit1220130221Open filing evidence
2010-01-01 – 2010-12-31244000000 Unit1220130221Open filing evidence

Intersegment Elimination · Market Optimization

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember
PeriodValueUnitFiledEvidence
2013-01-01 – 2013-12-31-5150000000 Unit1220140220Open filing evidence
2012-01-01 – 2012-12-31-3841000000 Unit1220140220Open filing evidence
2011-01-01 – 2011-12-31-5977000000 Unit1220140220Open filing evidence
2010-01-01 – 2010-12-31-5932000000 Unit1220130221Open filing evidence

Natural Gas Reserves · Canadian Division

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=us-gaap:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:CanadianDivisionMember
PeriodValueUnitFiledEvidence
2012-01-01 – 2012-12-312225000000 Unit1220130221Open filing evidence
2011-01-01 – 2011-12-312376000000 Unit1220130221Open filing evidence
2010-01-01 – 2010-12-312480000000 Unit1220130221Open filing evidence

Natural Gas Reserves · Usa Division

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=us-gaap:NaturalGasReservesMember;us-gaap:StatementBusinessSegmentsAxis=eca:UsaDivisionMember
PeriodValueUnitFiledEvidence
2012-01-01 – 2012-12-312993000000 Unit1220130221Open filing evidence
2011-01-01 – 2011-12-313664000000 Unit1220130221Open filing evidence
2010-01-01 – 2010-12-313912000000 Unit1220130221Open filing evidence

Canadian Division

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:CanadianDivisionMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-09-30260000000 Unit1220171109Open filing evidence
2017-01-01 – 2017-09-30807000000 Unit1220171109Open filing evidence
2017-04-01 – 2017-06-30267000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-06-30547000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-03-31280000000 Unit1220170504Open filing evidence
2016-01-01 – 2016-12-311067000000 Unit1220170227Open filing evidence
2016-07-01 – 2016-09-30246000000 Unit1220171109Open filing evidence
2016-01-01 – 2016-09-30792000000 Unit1220171109Open filing evidence
2016-04-01 – 2016-06-30252000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-06-30546000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-03-31294000000 Unit1220170504Open filing evidence
2015-01-01 – 2015-12-311822000000 Unit1220170227Open filing evidence
2014-01-01 – 2014-12-313310000000 Unit1220170227Open filing evidence
2013-01-01 – 2013-12-312824000000 Unit1220160229Open filing evidence
2012-01-01 – 2012-12-312760000000 Unit1220150303Open filing evidence
2011-01-01 – 2011-12-312872000000 Unit1220140220Open filing evidence
2010-01-01 – 2010-12-312829000000 Unit1220130221Open filing evidence

Canadian Operations Excluding Intercompany Segment Transactions · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-30464000000 RestatedUSD20181106Open filing evidence
2018-04-01 – 2018-06-30457000000 RestatedUSD20180802Open filing evidence
2017-07-01 – 2017-09-30263000000 RestatedUSD20181106Open filing evidence
2017-04-01 – 2017-06-30270000000 RestatedUSD20180802Open filing evidence

Canadian Operations · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:CanadianOperationsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30464000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-301396000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30456000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30932000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31476000000 RestatedUSD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-311821000000 RestatedUSD20190228Open filing evidence
2018-07-01 – 2018-09-30461000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-301329000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30452000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30868000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31416000000 RestatedUSD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-311191000000 RestatedUSD20190228Open filing evidence
2017-07-01 – 2017-09-30260000000 RestatedUSD20181106Open filing evidence
2017-01-01 – 2017-09-30807000000 RestatedUSD20181106Open filing evidence
2017-04-01 – 2017-06-30267000000 RestatedUSD20180802Open filing evidence
2017-01-01 – 2017-06-30547000000 RestatedUSD20180802Open filing evidence
2016-01-01 – 2016-12-311067000000 RestatedUSD20190228Open filing evidence

China Operations · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:ChinaOperationsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-303000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-3037000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-3021000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-3034000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-3113000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-04 · 22:30:00.000ZOpen filing evidence

Market Optimization Excluding Intercompany Segment Transactions · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30290000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-30850000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30244000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30560000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31316000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-30308000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-30880000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30275000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30572000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31297000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-07-01 – 2017-09-30214000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-30200000000 USD20180802Open filing evidence

Market Optimization

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-09-30224000000 Unit1220171109Open filing evidence
2017-01-01 – 2017-09-30614000000 Unit1220171109Open filing evidence
2017-04-01 – 2017-06-30204000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-06-30390000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-03-31186000000 Unit1220170504Open filing evidence
2016-01-01 – 2016-12-31646000000 Unit1220170227Open filing evidence
2016-07-01 – 2016-09-30214000000 Unit1220171109Open filing evidence
2016-01-01 – 2016-09-30393000000 Unit1220171109Open filing evidence
2016-04-01 – 2016-06-3092000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-06-30179000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-03-3187000000 Unit1220170504Open filing evidence
2015-01-01 – 2015-12-31365000000 Unit1220170227Open filing evidence
2014-01-01 – 2014-12-311248000000 Unit1220170227Open filing evidence
2013-01-01 – 2013-12-31512000000 Unit1220160229Open filing evidence
2012-01-01 – 2012-12-31419000000 Unit1220150303Open filing evidence
2011-01-01 – 2011-12-31703000000 Unit1220140220Open filing evidence
2010-01-01 – 2010-12-31797000000 Unit1220130221Open filing evidence

Market Optimization · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30294000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30249000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-12-311219000000 RestatedUSD20190228Open filing evidence
2018-07-01 – 2018-09-30316000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-30906000000 RestatedUSD20181106Open filing evidence
2018-04-01 – 2018-06-30289000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30590000000 RestatedUSD20180802Open filing evidence
2017-01-01 – 2017-12-31863000000 USD20190228Open filing evidence
2017-07-01 – 2017-09-30224000000 USD20181106Open filing evidence
2017-01-01 – 2017-09-30614000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-30204000000 USD20180802Open filing evidence
2017-01-01 – 2017-06-30390000000 USD20180802Open filing evidence
2016-01-01 – 2016-12-31646000000 RestatedUSD20190228Open filing evidence

Market Optimization · Marketing Sales · Reportable Subsegments

Statement Business Segments · Subsegments · Subsegments Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember;us-gaap:SubsegmentsAxis=eca:MarketingSalesMember;us-gaap:SubsegmentsConsolidationItemsAxis=us-gaap:ReportableSubsegmentsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-311331000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-12-313939000000 Unit1220180226Open filing evidence
2017-01-01 – 2017-03-31956000000 Unit1220180503Open filing evidence
2016-01-01 – 2016-12-313304000000 Unit1220180226Open filing evidence
2015-01-01 – 2015-12-314309000000 Unit1220180226Open filing evidence

Market Optimization · Intersubsegment Eliminations

Statement Business Segments · Subsegments Consolidation Items

Multiple units reported for the same period; values are kept separate.

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember;us-gaap:SubsegmentsConsolidationItemsAxis=us-gaap:IntersubsegmentEliminationsMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-31-4505000000 USD20190228Open filing evidence
2018-01-01 – 2018-09-30-3297000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-30-2100000000 USD20180802Open filing evidence
2018-01-01 – 2018-03-31-1030000000 Unit1220180503Open filing evidence
2017-01-01 – 2017-12-31-3076000000 Unit1220180226Open filing evidence
2017-01-01 – 2017-12-31-3076000000 USD20190228Open filing evidence
2017-01-01 – 2017-09-30-2211000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-30-1517000000 USD20180802Open filing evidence
2017-01-01 – 2017-03-31-770000000 Unit1220180503Open filing evidence
2016-01-01 – 2016-12-31-2658000000 Unit1220180226Open filing evidence
2016-01-01 – 2016-12-31-2658000000 USD20190228Open filing evidence
2015-01-01 – 2015-12-31-3944000000 Unit1220180226Open filing evidence

Market Optimization · Reportable Subsegments · Marketing Sales

Statement Business Segments · Subsegments Consolidation Items · Subsegments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember;us-gaap:SubsegmentsConsolidationItemsAxis=us-gaap:ReportableSubsegmentsMember;us-gaap:SubsegmentsAxis=eca:MarketingSalesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-315724000000 USD20190228Open filing evidence
2018-01-01 – 2018-09-304203000000 USD20181106Open filing evidence
2018-01-01 – 2018-06-302690000000 USD20180802Open filing evidence
2017-01-01 – 2017-12-313939000000 USD20190228Open filing evidence
2017-01-01 – 2017-09-302825000000 USD20181106Open filing evidence
2017-01-01 – 2017-06-301907000000 USD20180802Open filing evidence
2016-01-01 – 2016-12-313304000000 USD20190228Open filing evidence

Usa Division

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:UsaDivisionMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-09-30437000000 Unit1220171109Open filing evidence
2017-01-01 – 2017-09-301366000000 Unit1220171109Open filing evidence
2017-04-01 – 2017-06-30485000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-06-30929000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-03-31444000000 Unit1220170504Open filing evidence
2016-01-01 – 2016-12-311770000000 Unit1220170227Open filing evidence
2016-07-01 – 2016-09-30458000000 Unit1220171109Open filing evidence
2016-01-01 – 2016-09-301327000000 Unit1220171109Open filing evidence
2016-04-01 – 2016-06-30460000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-06-30869000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-03-31409000000 Unit1220170504Open filing evidence
2015-01-01 – 2015-12-312491000000 Unit1220170227Open filing evidence
2014-01-01 – 2014-12-312902000000 Unit1220170227Open filing evidence
2013-01-01 – 2013-12-312763000000 Unit1220160229Open filing evidence
2012-01-01 – 2012-12-313365000000 Unit1220150303Open filing evidence
2011-01-01 – 2011-12-314022000000 Unit1220140220Open filing evidence
2010-01-01 – 2010-12-314275000000 Unit1220130221Open filing evidence

Usa Operations Excluding Intercompany Segment Transactions · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsExcludingIntercompanySegmentTransactionsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-30639000000 RestatedUSD20181106Open filing evidence
2018-04-01 – 2018-06-30559000000 RestatedUSD20180802Open filing evidence
2017-07-01 – 2017-09-30444000000 RestatedUSD20181106Open filing evidence
2017-04-01 – 2017-06-30486000000 RestatedUSD20180802Open filing evidence

Usa Operations · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=eca:UsaOperationsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-301132000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-303190000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-301229000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-302058000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31829000000 RestatedUSD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-01-01 – 2018-12-312313000000 RestatedUSD20190228Open filing evidence
2018-07-01 – 2018-09-30634000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-301695000000 RestatedUSD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30550000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-301061000000 RestatedUSD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31511000000 RestatedUSD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-01-01 – 2017-12-311878000000 RestatedUSD20190228Open filing evidence
2017-07-01 – 2017-09-30437000000 RestatedUSD20181106Open filing evidence
2017-01-01 – 2017-09-301366000000 RestatedUSD20181106Open filing evidence
2017-04-01 – 2017-06-30485000000 RestatedUSD20180802Open filing evidence
2017-01-01 – 2017-06-30929000000 RestatedUSD20180802Open filing evidence
2016-01-01 – 2016-12-311770000000 RestatedUSD20190228Open filing evidence

Corporate And Other

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-09-30-60000000 Unit1220171109Open filing evidence
2017-01-01 – 2017-09-30446000000 Unit1220171109Open filing evidence
2017-04-01 – 2017-06-30127000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-06-30506000000 Unit1220170725Open filing evidence
2017-01-01 – 2017-03-31387000000 Unit1220170504Open filing evidence
2016-01-01 – 2016-12-31-565000000 Unit1220170227Open filing evidence
2016-07-01 – 2016-09-3061000000 Unit1220171109Open filing evidence
2016-01-01 – 2016-09-30-416000000 Unit1220171109Open filing evidence
2016-04-01 – 2016-06-30-440000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-06-30-477000000 Unit1220170725Open filing evidence
2016-01-01 – 2016-03-31-37000000 Unit1220170504Open filing evidence
2015-01-01 – 2015-12-31-256000000 Unit1220170227Open filing evidence
2014-01-01 – 2014-12-31559000000 Unit1220170227Open filing evidence
2013-01-01 – 2013-12-31-241000000 Unit1220160229Open filing evidence
2012-01-01 – 2012-12-31-1384000000 Unit1220150303Open filing evidence
2011-01-01 – 2011-12-31870000000 Unit1220140220Open filing evidence
2010-01-01 – 2010-12-31969000000 Unit1220130221Open filing evidence

Marketing Sales · Reportable Subsegments · Market Optimization

Subsegments · Subsegments Consolidation Items · Statement Business Segments

Source dimensions us-gaap:SubsegmentsAxis=eca:MarketingSalesMember;us-gaap:SubsegmentsConsolidationItemsAxis=us-gaap:ReportableSubsegmentsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-302088000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-305459000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-302135000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-303371000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-311236000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-301513000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-304203000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-301359000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-302690000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-311331000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-07-01 – 2017-09-30918000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-30951000000 USD20180802Open filing evidence

Intersubsegment Eliminations · Market Optimization

Subsegments Consolidation Items · Statement Business Segments

Source dimensions us-gaap:SubsegmentsConsolidationItemsAxis=us-gaap:IntersubsegmentEliminationsMember;us-gaap:StatementBusinessSegmentsAxis=eca:MarketOptimizationMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-30-1794000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-01-01 – 2019-09-30-4590000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2019-04-01 – 2019-06-30-1886000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-06-30-2796000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2019-01-01 – 2019-03-31-910000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2018-07-01 – 2018-09-30-1197000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-01-01 – 2018-09-30-3297000000 USD2019-11-04 · 22:30:00.000ZOpen filing evidence
2018-04-01 – 2018-06-30-1070000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-06-30-2100000000 USD2019-08-01 · 15:27:07.000ZOpen filing evidence
2018-01-01 – 2018-03-31-1030000000 USD2019-05-02 · 15:19:15.000ZOpen filing evidence
2017-07-01 – 2017-09-30-694000000 USD20181106Open filing evidence
2017-04-01 – 2017-06-30-747000000 USD20180802Open filing evidence