Fundies. English
Segment disclosures
Company overviewNorthWestern Corp
Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.
Revenue · Reported segment facts
43 dimension combinations 568 retained observations 55 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 · All Other Segments
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2022-01-01 – 2022-12-31 | 0 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 0 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 0 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 0 | USD | 2022-02-11 · 01:15:32.000Z | Open filing evidence |
Total Revenue · Electric Domestic Regulated
Product Or Service · Statement Business Segments
Source dimensions
srt:ProductOrServiceAxis=nwe:TotalRevenueMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2023-07-01 – 2023-09-30 | 280000000 | USD | 2023-10-26 · 22:10:01.000Z | Open filing evidence |
| 2023-01-01 – 2023-09-30 | 804600000 | USD | 2023-10-26 · 22:10:01.000Z | Open filing evidence |
| 2023-04-01 – 2023-06-30 | 229300000 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2023-01-01 – 2023-06-30 | 524600000 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2022-01-01 – 2022-12-31 | 1106600000 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2022-07-01 – 2022-09-30 | 292300000 | USD | 2023-10-26 · 22:10:01.000Z | Open filing evidence |
| 2022-01-01 – 2022-09-30 | 807400000 | USD | 2023-10-26 · 22:10:01.000Z | Open filing evidence |
| 2022-04-01 – 2022-06-30 | 243400000 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2022-01-01 – 2022-06-30 | 515100000 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 271700000 | USD | 2022-04-28 · 23:02:56.000Z | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 1052200000 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 287500000 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 799000000 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2021-04-01 – 2021-06-30 | 241400000 | USD | 2022-07-27 · 22:36:02.000Z | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 511500000 | USD | 2022-07-27 · 22:36:02.000Z | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 270100000 | USD | 2022-04-28 · 23:02:56.000Z | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 940800000 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 244200000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 706700000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 217900000 | USD | 2021-07-27 · 22:43:06.000Z | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 462500000 | USD | 2021-07-27 · 22:43:06.000Z | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 244600000 | USD | 2021-04-21 · 22:30:03.000Z | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 981200000 | USD | 2021-02-12 · 00:35:02.000Z | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 241200000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 733900000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 219700000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 492700000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 273000000 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 921100000 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 245200000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 693300000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 209700000 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 448100000 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 238300000 | USD | 2019-04-23 · 22:18:18.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 274800000 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 774900000 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
Total Revenue · Gas Domestic Regulated
Product Or Service · Statement Business Segments
Source dimensions
srt:ProductOrServiceAxis=nwe:TotalRevenueMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2023-04-01 – 2023-06-30 | 61200000 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2023-01-01 – 2023-06-30 | 220400000 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2023-01-01 – 2023-03-31 | 159200000 | USD | 2023-04-27 · 23:36:35.000Z | Open filing evidence |
| 2022-01-01 – 2022-12-31 | 371200000 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2022-07-01 – 2022-09-30 | 42800000 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2022-01-01 – 2022-09-30 | 245200000 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2022-04-01 – 2022-06-30 | 79600000 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2022-01-01 – 2022-06-30 | 202400000 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 122800000 | USD | 2023-04-27 · 23:36:35.000Z | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 320100000 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 38500000 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 226000000 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 130700000 | USD | 2021-04-21 · 22:30:03.000Z | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 257900000 | USD | 2023-02-16 · 23:48:32.000Z | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 51400000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 142100000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 90600000 | USD | 2021-04-21 · 22:30:03.000Z | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 276700000 | USD | 2021-02-12 · 00:35:02.000Z | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 33600000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 195800000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 51100000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 162200000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 111200000 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 270900000 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 34700000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 189900000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 52100000 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 155200000 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 103200000 | USD | 2019-04-23 · 22:18:18.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 35100000 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 186200000 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
Commercial Customers · Electric Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:CommercialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 101900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 209600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 107600000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 104400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 214900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 110500000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Commercial Customers · Electric Domestic Regulated · MT
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:CommercialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:MT| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 79600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 163300000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 83600000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 83000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 171100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 88100000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Commercial Customers · Electric Domestic Regulated · NE
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:CommercialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:NE| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 0 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 0 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Commercial Customers · Electric Domestic Regulated · SD
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:CommercialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:SD| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 22300000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 46300000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 24000000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 21400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 43800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 22400000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Commercial Customers · Gas Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:CommercialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 14800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 49400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 34600000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 13100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 47300000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 34200000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Commercial Customers · Gas Domestic Regulated · MT
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:CommercialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:MT| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 8800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 29400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 20600000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 8200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 30100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 21900000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Commercial Customers · Gas Domestic Regulated · NE
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:CommercialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:NE| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 2400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 8500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 6100000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 2100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 7000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 4900000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Commercial Customers · Gas Domestic Regulated · SD
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:CommercialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:SD| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 3600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 11500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 7900000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 2800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 10200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 7400000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Industrial Customers · Electric Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:IndustrialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 10700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 21500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 10800000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 10100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 21000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 10900000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Industrial Customers · Gas Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:IndustrialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 500000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 500000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Other Customers · Electric Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:OtherCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 7100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 12100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 5000000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 8900000.0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 14100000.0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 5200000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Other Customers · Gas Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:OtherCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 500000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 500000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Other Tariff Based Revenue · Electric Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:OtherTariffBasedRevenueMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 17800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 35600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 17800000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 33800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 71200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 37400000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Other Tariff Based Revenue · Gas Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:OtherTariffBasedRevenueMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 10600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 20900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 10300000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 9700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 20800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 11100000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Residential Customers · Electric Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:ResidentialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 73900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 179800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 105900000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 72600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 180700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 108100000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Residential Customers · Electric Domestic Regulated · MT
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:ResidentialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:MT| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 59500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 146700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 87200000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 59700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 150500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 90800000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Residential Customers · Electric Domestic Regulated · NE
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:ResidentialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:NE| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 0 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 0 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Residential Customers · Electric Domestic Regulated · SD
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:ResidentialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:SD| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 14400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 33100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 18700000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 12900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 30200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 17300000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Residential Customers · Gas Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:ResidentialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 28200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 91900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 63700000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 24900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 88500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 63600000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Residential Customers · Gas Domestic Regulated · MT
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:ResidentialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:MT| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 17600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 58500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 40900000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 16500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 60300000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 43800000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Residential Customers · Gas Domestic Regulated · NE
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:ResidentialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:NE| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 5000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 16400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 11400000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 4100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 13100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 9000000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Residential Customers · Gas Domestic Regulated · SD
Major Customers · Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:MajorCustomersAxis=nwe:ResidentialCustomersMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember;us-gaap:StatementGeographicalAxis=stpr:SD| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 5600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 17000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 11400000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 4300000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 15100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 10800000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Totalcustomerrevenue · Electric Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:TotalcustomerrevenueMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 193600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 423000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 229300000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 196000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 430700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 234700000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Totalcustomerrevenue · Gas Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=nwe:TotalcustomerrevenueMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 43400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 142700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 99300000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 38300000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 137100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 98800000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Revenue From Contract With Customer · Electric Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=us-gaap:RevenueFromContractWithCustomerMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 211400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 458600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 247100000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 229800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 501900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 272100000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Revenue From Contract With Customer · Gas Domestic Regulated
Major Customers · Statement Business Segments
Source dimensions
us-gaap:MajorCustomersAxis=us-gaap:RevenueFromContractWithCustomerMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 54000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 163600000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 109600000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 48000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 157900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 109900000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Regulatory Amortization · Electric Domestic Regulated
Product Or Service · Statement Business Segments
Source dimensions
us-gaap:ProductOrServiceAxis=nwe:RegulatoryAmortizationMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | -1700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | -10500000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | -8800000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 4100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | -1800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | -5900000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Regulatory Amortization · Gas Domestic Regulated
Product Or Service · Statement Business Segments
Source dimensions
us-gaap:ProductOrServiceAxis=nwe:RegulatoryAmortizationMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | -1900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | -8400000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | -6400000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 2000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | -6800000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | -8800000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Total Revenue · Electric Domestic Regulated
Product Or Service · Statement Business Segments
Source dimensions
us-gaap:ProductOrServiceAxis=nwe:TotalRevenueMember;us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 209700000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 448100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 238300000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 233900000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 500100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 266200000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
Total Revenue · Gas Domestic Regulated
Product Or Service · Statement Business Segments
Source dimensions
us-gaap:ProductOrServiceAxis=nwe:TotalRevenueMember;us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 52100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 155200000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 103200000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 50000000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 151100000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 101100000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
All Other Segments Unregulated
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=nwe:AllOtherSegmentsUnregulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2013-04-01 – 2013-06-30 | 327000 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 737000 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 410000 | USD | 2013-04-24 · 21:54:00.000Z | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 1394000 | USD | 2013-02-13 · 23:09:30.000Z | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 416000 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 1041000 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 326000 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 625000 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2012-01-01 – 2012-03-31 | 299000 | USD | 2013-04-24 · 21:54:00.000Z | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 1419000 | USD | 2013-02-13 · 23:09:30.000Z | Open filing evidence |
| 2011-07-01 – 2011-09-30 | 361000 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2011-01-01 – 2011-09-30 | 1112000 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2011-04-01 – 2011-06-30 | 325000 | USD | 2012-07-23 · 21:46:41.000Z | Open filing evidence |
| 2011-01-01 – 2011-06-30 | 751000 | USD | 2012-07-23 · 21:46:41.000Z | Open filing evidence |
| 2011-01-01 – 2011-03-31 | 426000 | USD | 2012-04-24 · 22:20:55.000Z | Open filing evidence |
| 2010-01-01 – 2010-12-31 | 1284000 | USD | 2013-02-13 · 23:09:30.000Z | Open filing evidence |
| 2010-07-01 – 2010-09-30 | 270000 | USD | 20111026 | Open filing evidence |
| 2010-01-01 – 2010-09-30 | 906000 | USD | 20111026 | Open filing evidence |
| 2010-04-01 – 2010-06-30 | 321000 | USD | 20110727 | Open filing evidence |
| 2010-01-01 – 2010-06-30 | 636000 | USD | 20110727 | Open filing evidence |
| 2009-01-01 – 2009-12-31 | 6747000 | USD | 20120216 | Open filing evidence |
Electric Domestic Regulated
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2020-07-01 – 2020-09-30 | 244155000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 706718000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 217938000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 462563000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 244625000 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 241237000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 733933000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 219659000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 492696000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 273037000 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 245159000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 693256000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 209755000 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 448097000 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 238342000 | USD | 2019-04-23 · 22:18:18.000Z | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 1037053000 | USD | 2018-02-12 · 23:29:47.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 274785000 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 774890000 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 233866000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 500105000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 266239000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 1011595000 | USD | 2018-02-12 · 23:29:47.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 266629000 | USD | 2017-11-01 · 22:14:20.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 756374000 | USD | 2017-11-01 · 22:14:20.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 248403000 | USD | 2017-07-25 · 22:19:58.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 489745000 | USD | 2017-07-25 · 22:19:58.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 241342000 | USD | 2017-04-26 · 21:52:58.000Z | Open filing evidence |
| 2015-01-01 – 2015-12-31 | 944428000 | USD | 2018-02-12 · 23:29:47.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 238513000 | USD | 2016-10-19 · 21:40:54.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 695921000 | USD | 2016-10-19 · 21:40:54.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 221362000 | USD | 2016-07-21 · 22:00:50.000Z | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 457408000 | USD | 2016-07-21 · 22:00:50.000Z | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 236046000 | USD | 2016-04-19 · 22:27:39.000Z | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 877967000 | USD | 2017-02-16 · 23:01:14.000Z | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 212430000 | USD | 2015-10-21 · 22:44:51.000Z | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 652951000 | USD | 2015-10-21 · 22:44:51.000Z | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 206010000 | USD | 2015-07-22 · 21:51:22.000Z | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 440521000 | USD | 2015-07-22 · 21:51:22.000Z | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 234511000 | USD | 2015-04-22 · 21:50:07.000Z | Open filing evidence |
| 2013-01-01 – 2013-12-31 | 865239000 | USD | 2016-02-10 · 22:47:13.000Z | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 227103000 | USD | 2014-10-22 · 21:47:09.000Z | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 637667000 | USD | 2014-10-22 · 21:47:09.000Z | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 200472000 | USD | 2014-07-23 · 22:01:21.000Z | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 410564000 | USD | 2014-07-23 · 22:01:21.000Z | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 210092000 | USD | 2014-04-23 · 21:49:58.000Z | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 805554000 | USD | 2015-02-11 · 22:53:49.000Z | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 202485000 | USD | 2013-10-23 · 22:01:04.000Z | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 605716000 | USD | 2013-10-23 · 22:01:04.000Z | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 196176000 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 403231000 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2012-01-01 – 2012-03-31 | 207055000 | USD | 2013-04-24 · 21:54:00.000Z | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 797562000 | USD | 2014-02-18 · 23:27:56.000Z | Open filing evidence |
| 2011-07-01 – 2011-09-30 | 206613000 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2011-01-01 – 2011-09-30 | 602024000 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2011-04-01 – 2011-06-30 | 186789000 | USD | 2012-07-23 · 21:46:41.000Z | Open filing evidence |
| 2011-01-01 – 2011-06-30 | 395411000 | USD | 2012-07-23 · 21:46:41.000Z | Open filing evidence |
| 2011-01-01 – 2011-03-31 | 208622000 | USD | 2012-04-24 · 22:20:55.000Z | Open filing evidence |
| 2010-01-01 – 2010-12-31 | 790701000 | USD | 2013-02-13 · 23:09:30.000Z | Open filing evidence |
| 2010-07-01 – 2010-09-30 | 203585000 | USD | 20111026 | Open filing evidence |
| 2010-01-01 – 2010-09-30 | 592262000 | USD | 20111026 | Open filing evidence |
| 2010-04-01 – 2010-06-30 | 184838000 | USD | 20110727 | Open filing evidence |
| 2010-01-01 – 2010-06-30 | 388677000 | USD | 20110727 | Open filing evidence |
| 2009-01-01 – 2009-12-31 | 782318000 | USD | 20120216 | Open filing evidence |
Electric Domestic Regulated · Total Revenue
Statement Business Segments · Product Or Service
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=nwe:ElectricDomesticRegulatedMember;srt:ProductOrServiceAxis=nwe:TotalRevenueMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2023-01-01 – 2023-03-31 | 295300000 | USD | 2023-04-27 · 23:36:35.000Z | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 271700000 | USD | 2023-04-27 · 23:36:35.000Z | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 1052200000 | USD | 2022-02-11 · 01:15:32.000Z | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 287500000 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 799000000 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 940800000 | USD | 2022-02-11 · 01:15:32.000Z | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 244200000 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 706700000 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 981200000 | USD | 2022-02-11 · 01:15:32.000Z | Open filing evidence |
Gas Domestic Regulated
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2020-07-01 – 2020-09-30 | 36455000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 178507000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 51422000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 142052000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 90630000 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 33599000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 195842000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 51060000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 162243000 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 111183000 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 34715000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 189937000 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 52062000 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 155222000 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 103160000 | USD | 2019-04-23 · 22:18:18.000Z | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 268599000 | USD | 2018-02-12 · 23:29:47.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 35148000 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 186214000 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 49993000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 151066000 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 101073000 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 245652000 | USD | 2018-02-12 · 23:29:47.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 34369000 | USD | 2017-11-01 · 22:14:20.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 170283000 | USD | 2017-11-01 · 22:14:20.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 44717000 | USD | 2017-07-25 · 22:19:58.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 135914000 | USD | 2017-07-25 · 22:19:58.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 91197000 | USD | 2017-04-26 · 21:52:58.000Z | Open filing evidence |
| 2015-01-01 – 2015-12-31 | 269871000 | USD | 2018-02-12 · 23:29:47.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 34226000 | USD | 2016-10-19 · 21:40:54.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 193389000 | USD | 2016-10-19 · 21:40:54.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 49198000 | USD | 2016-07-21 · 22:00:50.000Z | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 159163000 | USD | 2016-07-21 · 22:00:50.000Z | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 109965000 | USD | 2016-04-19 · 22:27:39.000Z | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 326896000 | USD | 2017-02-16 · 23:01:14.000Z | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 39482000 | USD | 2015-10-21 · 22:44:51.000Z | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 238965000 | USD | 2015-10-21 · 22:44:51.000Z | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 64271000 | USD | 2015-07-22 · 21:51:22.000Z | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 199483000 | USD | 2015-07-22 · 21:51:22.000Z | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 135212000 | USD | 2015-04-22 · 21:50:07.000Z | Open filing evidence |
| 2013-01-01 – 2013-12-31 | 287605000 | USD | 2016-02-10 · 22:47:13.000Z | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 34772000 | USD | 2014-10-22 · 21:47:09.000Z | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 196652000 | USD | 2014-10-22 · 21:47:09.000Z | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 59362000 | USD | 2014-07-23 · 22:01:21.000Z | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 161880000 | USD | 2014-07-23 · 22:01:21.000Z | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 102518000 | USD | 2014-04-23 · 21:49:58.000Z | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 263394000 | USD | 2015-02-11 · 22:53:49.000Z | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 32965000 | USD | 2013-10-23 · 22:01:04.000Z | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 182812000 | USD | 2013-10-23 · 22:01:04.000Z | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 48101000 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 149847000 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2012-01-01 – 2012-03-31 | 101746000 | USD | 2013-04-24 · 21:54:00.000Z | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 318335000 | USD | 2014-02-18 · 23:27:56.000Z | Open filing evidence |
| 2011-07-01 – 2011-09-30 | 37067000 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2011-01-01 – 2011-09-30 | 230971000 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2011-04-01 – 2011-06-30 | 64692000 | USD | 2012-07-23 · 21:46:41.000Z | Open filing evidence |
| 2011-01-01 – 2011-06-30 | 193904000 | USD | 2012-07-23 · 21:46:41.000Z | Open filing evidence |
| 2011-01-01 – 2011-03-31 | 129212000 | USD | 2012-04-24 · 22:20:55.000Z | Open filing evidence |
| 2010-01-01 – 2010-12-31 | 318735000 | USD | 2013-02-13 · 23:09:30.000Z | Open filing evidence |
| 2010-07-01 – 2010-09-30 | 36963000 | USD | 20111026 | Open filing evidence |
| 2010-01-01 – 2010-09-30 | 225882000 | USD | 20111026 | Open filing evidence |
| 2010-04-01 – 2010-06-30 | 58900000 | USD | 20110727 | Open filing evidence |
| 2010-01-01 – 2010-06-30 | 188919000 | USD | 20110727 | Open filing evidence |
| 2009-01-01 – 2009-12-31 | 354470000 | USD | 20120216 | Open filing evidence |
Gas Domestic Regulated · Total Revenue
Statement Business Segments · Product Or Service
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=nwe:GasDomesticRegulatedMember;srt:ProductOrServiceAxis=nwe:TotalRevenueMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2023-07-01 – 2023-09-30 | 41100000 | USD | 2023-10-26 · 22:10:01.000Z | Open filing evidence |
| 2023-01-01 – 2023-09-30 | 261500000 | USD | 2023-10-26 · 22:10:01.000Z | Open filing evidence |
| 2022-07-01 – 2022-09-30 | 42800000 | USD | 2023-10-26 · 22:10:01.000Z | Open filing evidence |
| 2022-01-01 – 2022-09-30 | 245200000 | USD | 2023-10-26 · 22:10:01.000Z | Open filing evidence |
| 2022-04-01 – 2022-06-30 | 79600000 | USD | 2022-07-27 · 22:36:02.000Z | Open filing evidence |
| 2022-01-01 – 2022-06-30 | 202400000 | USD | 2022-07-27 · 22:36:02.000Z | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 122800000 | USD | 2022-04-28 · 23:02:56.000Z | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 320100000 | USD | 2022-02-11 · 01:15:32.000Z | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 38500000 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 226000000 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2021-04-01 – 2021-06-30 | 56800000 | USD | 2022-07-27 · 22:36:02.000Z | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 187500000 | USD | 2022-07-27 · 22:36:02.000Z | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 130700000 | USD | 2022-04-28 · 23:02:56.000Z | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 257900000 | USD | 2022-02-11 · 01:15:32.000Z | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 36500000 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 178500000 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 51400000 | USD | 2021-07-27 · 22:43:06.000Z | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 142100000 | USD | 2021-07-27 · 22:43:06.000Z | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 276700000 | USD | 2022-02-11 · 01:15:32.000Z | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 33600000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 195800000 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
All Other Segments
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2023-04-01 – 2023-06-30 | 0 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2023-01-01 – 2023-06-30 | 0 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2023-01-01 – 2023-03-31 | 0 | USD | 2023-04-27 · 23:36:35.000Z | Open filing evidence |
| 2022-07-01 – 2022-09-30 | 0 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2022-01-01 – 2022-09-30 | 0 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2022-04-01 – 2022-06-30 | 0 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2022-01-01 – 2022-06-30 | 0 | USD | 2023-07-24 · 23:35:54.000Z | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 0 | USD | 2023-04-27 · 23:36:35.000Z | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 0 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 0 | USD | 2022-10-24 · 22:41:59.000Z | Open filing evidence |
| 2021-04-01 – 2021-06-30 | 0 | USD | 2022-07-27 · 22:36:02.000Z | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 0 | USD | 2022-07-27 · 22:36:02.000Z | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 0 | USD | 2022-04-28 · 23:02:56.000Z | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 0 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 0 | USD | 2021-10-25 · 12:46:22.000Z | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 0 | USD | 2021-07-27 · 22:43:06.000Z | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 0 | USD | 2021-07-27 · 22:43:06.000Z | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 0 | USD | 2021-04-21 · 22:30:03.000Z | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 0 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 0 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 0 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 0 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 0 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 0 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 0 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 0 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 0 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 0 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 0 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 0 | USD | 2019-04-23 · 22:18:18.000Z | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 0 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 0 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 0 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 0 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 0 | USD | 2019-02-11 · 23:37:26.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 0 | USD | 2017-11-01 · 22:14:20.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 0 | USD | 2017-11-01 · 22:14:20.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 0 | USD | 2017-07-25 · 22:19:58.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 0 | USD | 2017-07-25 · 22:19:58.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 0 | USD | 2017-04-26 · 21:52:58.000Z | Open filing evidence |
| 2015-01-01 – 2015-12-31 | 0 | USD | 2018-02-12 · 23:29:47.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 0 | USD | 2016-10-19 · 21:40:54.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 0 | USD | 2016-10-19 · 21:40:54.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 0 | USD | 2016-07-21 · 22:00:50.000Z | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 0 | USD | 2016-07-21 · 22:00:50.000Z | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 0 | USD | 2016-04-19 · 22:27:39.000Z | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 0 | USD | 2017-02-16 · 23:01:14.000Z | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 0 | USD | 2015-10-21 · 22:44:51.000Z | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 0 | USD | 2015-10-21 · 22:44:51.000Z | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 0 | USD | 2015-07-22 · 21:51:22.000Z | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 0 | USD | 2015-07-22 · 21:51:22.000Z | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 0 | USD | 2015-04-22 · 21:50:07.000Z | Open filing evidence |
| 2013-01-01 – 2013-12-31 | 1675000 | USD | 2016-02-10 · 22:47:13.000Z | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 373000 | USD | 2014-10-22 · 21:47:09.000Z | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 1110000 | USD | 2014-10-22 · 21:47:09.000Z | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 327000 | USD | 2014-07-23 · 22:01:21.000Z | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 737000 | USD | 2014-07-23 · 22:01:21.000Z | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 410000 | USD | 2014-04-23 · 21:49:58.000Z | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 1394000 | USD | 2015-02-11 · 22:53:49.000Z | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 416000 | USD | 2013-10-23 · 22:01:04.000Z | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 1041000 | USD | 2013-10-23 · 22:01:04.000Z | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 1419000 | USD | 2014-02-18 · 23:27:56.000Z | Open filing evidence |
All Other Segments · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2020-01-01 – 2020-12-31 | 0 | USD | 2021-02-12 · 00:35:02.000Z | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 0 | USD | 2021-02-12 · 00:35:02.000Z | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 0 | USD | 2021-02-12 · 00:35:02.000Z | Open filing evidence |
Electricity Us Regulated
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:ElectricityUsRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2019-01-01 – 2019-12-31 | 981178000 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 921093000 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 1037053000 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 1011595000 | USD | 2019-02-11 · 23:37:26.000Z | Open filing evidence |
Intersegment Elimination
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:IntersegmentEliminationMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2020-07-01 – 2020-09-30 | 0 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 0 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 0 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 0 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 0 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 0 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 0 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 0 | USD | 2020-10-21 · 21:48:51.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 0 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 0 | USD | 2020-07-28 · 22:06:45.000Z | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 0 | USD | 2020-04-22 · 23:39:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 0 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 0 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 0 | USD | 2019-10-30 · 13:21:42.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 0 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 0 | USD | 2019-07-23 · 22:22:08.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 0 | USD | 2019-04-23 · 22:18:18.000Z | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 0 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 0 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 0 | USD | 2018-10-23 · 21:45:34.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 0 | USD | 2018-07-19 · 22:52:03.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 0 | USD | 2018-04-24 · 22:28:05.000Z | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 0 | USD | 2019-02-11 · 23:37:26.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 0 | USD | 2017-11-01 · 22:14:20.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 0 | USD | 2017-11-01 · 22:14:20.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 0 | USD | 2017-07-25 · 22:19:58.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 0 | USD | 2017-07-25 · 22:19:58.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 0 | USD | 2017-04-26 · 21:52:58.000Z | Open filing evidence |
| 2015-01-01 – 2015-12-31 | 0 | USD | 2018-02-12 · 23:29:47.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 0 | USD | 2016-10-19 · 21:40:54.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 0 | USD | 2016-10-19 · 21:40:54.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 0 | USD | 2016-07-21 · 22:00:50.000Z | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 0 | USD | 2016-07-21 · 22:00:50.000Z | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 0 | USD | 2016-04-19 · 22:27:39.000Z | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 0 | USD | 2017-02-16 · 23:01:14.000Z | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 0 | USD | 2015-10-21 · 22:44:51.000Z | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 0 | USD | 2015-10-21 · 22:44:51.000Z | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 0 | USD | 2015-07-22 · 21:51:22.000Z | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 0 | USD | 2015-07-22 · 21:51:22.000Z | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 0 | USD | 2015-04-22 · 21:50:07.000Z | Open filing evidence |
| 2013-01-01 – 2013-12-31 | 0 | USD | 2016-02-10 · 22:47:13.000Z | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 0 | USD | 2014-10-22 · 21:47:09.000Z | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 0 | USD | 2014-10-22 · 21:47:09.000Z | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 0 | USD | 2014-07-23 · 22:01:21.000Z | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 0 | USD | 2014-07-23 · 22:01:21.000Z | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 0 | USD | 2014-04-23 · 21:49:58.000Z | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 0 | USD | 2015-02-11 · 22:53:49.000Z | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 0 | USD | 2013-10-23 · 22:01:04.000Z | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 0 | USD | 2013-10-23 · 22:01:04.000Z | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 0 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 0 | USD | 2013-07-24 · 22:27:30.000Z | Open filing evidence |
| 2012-01-01 – 2012-03-31 | 0 | USD | 2013-04-24 · 21:54:00.000Z | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 0 | USD | 2014-02-18 · 23:27:56.000Z | Open filing evidence |
| 2011-07-01 – 2011-09-30 | 0 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2011-01-01 – 2011-09-30 | 0 | USD | 2012-10-23 · 22:20:03.000Z | Open filing evidence |
| 2011-04-01 – 2011-06-30 | 0 | USD | 2012-07-23 · 21:46:41.000Z | Open filing evidence |
| 2011-01-01 – 2011-06-30 | 0 | USD | 2012-07-23 · 21:46:41.000Z | Open filing evidence |
| 2011-01-01 – 2011-03-31 | 0 | USD | 2012-04-24 · 22:20:55.000Z | Open filing evidence |
| 2010-01-01 – 2010-12-31 | 0 | USD | 2013-02-13 · 23:09:30.000Z | Open filing evidence |
| 2010-07-01 – 2010-09-30 | 0 | USD | 20111026 | Open filing evidence |
| 2010-01-01 – 2010-09-30 | 0 | USD | 20111026 | Open filing evidence |
| 2010-04-01 – 2010-06-30 | 0 | USD | 20110727 | Open filing evidence |
| 2010-01-01 – 2010-06-30 | 0 | USD | 20110727 | Open filing evidence |
| 2009-01-01 – 2009-12-31 | -1625000 | USD | 20120216 | Open filing evidence |
Natural Gas Us Regulated
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:NaturalGasUsRegulatedMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2019-01-01 – 2019-12-31 | 276732000 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 270916000 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 268599000 | USD | 2020-02-12 · 23:44:36.000Z | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 245652000 | USD | 2019-02-11 · 23:37:26.000Z | Open filing evidence |