Segment disclosures

Company overview

EAST WEST BANCORP, INC.

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

Revenue · Reported segment facts

34 dimension combinations 352 retained observations 16 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.

Card Income · Commercial Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:CardIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-30122000 USD20200810Open filing evidence
2020-01-01 – 2020-06-30322000 USD20200810Open filing evidence
2020-01-01 – 2020-03-31200000 USD20200508Open filing evidence
2019-01-01 – 2019-12-31676000 USD20200227Open filing evidence
2019-07-01 – 2019-09-30145000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-30484000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-30154000 USD20200810Open filing evidence
2019-01-01 – 2019-06-30339000 USD20200810Open filing evidence
2019-01-01 – 2019-03-31185000 USD20200508Open filing evidence
2018-01-01 – 2018-12-31757000 RestatedUSD20200227Open filing evidence
2018-07-01 – 2018-09-30201000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-30596000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-30221000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-30395000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-31174000 USD20190508Open filing evidence
2017-01-01 – 2017-12-31785000 RestatedUSD20200227Open filing evidence
2017-07-01 – 2017-09-30210000 USD20181107Open filing evidence
2017-01-01 – 2017-09-30625000 USD20181107Open filing evidence
2016-01-01 – 2016-12-31763000 USD20190227Open filing evidence

Card Income · Consumerand Business Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:CardIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:ConsumerandBusinessBankingMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-30639000 USD20200810Open filing evidence
2020-01-01 – 2020-06-301537000 USD20200810Open filing evidence
2020-01-01 – 2020-03-31898000 USD20200508Open filing evidence
2019-01-01 – 2019-12-313032000 USD20200227Open filing evidence
2019-07-01 – 2019-09-30985000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-302846000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-30747000 RestatedUSD20200810Open filing evidence
2019-01-01 – 2019-06-301507000 RestatedUSD20200810Open filing evidence
2019-01-01 – 2019-03-31760000 RestatedUSD20200508Open filing evidence
2018-01-01 – 2018-12-313196000 RestatedUSD20200227Open filing evidence
2018-07-01 – 2018-09-30949000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-302952000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-30933000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-302003000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-311070000 USD20190508Open filing evidence
2017-01-01 – 2017-12-313465000 RestatedUSD20200227Open filing evidence
2016-01-01 – 2016-12-314352000 USD20190227Open filing evidence

Card Income · Retail Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:CardIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:RetailBankingMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-30949000 USD20181107Open filing evidence
2018-01-01 – 2018-09-302952000 USD20181107Open filing evidence
2017-07-01 – 2017-09-30996000 USD20181107Open filing evidence
2017-01-01 – 2017-09-303052000 USD20181107Open filing evidence

Card Income · All Other Segments

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:CardIncomeMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-300 USD20200810Open filing evidence
2020-01-01 – 2020-06-300 USD20200810Open filing evidence
2020-01-01 – 2020-03-310 USD20200508Open filing evidence
2019-01-01 – 2019-12-310 USD20200227Open filing evidence
2019-07-01 – 2019-09-300 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-300 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-300 USD20200810Open filing evidence
2019-01-01 – 2019-06-300 USD20200810Open filing evidence
2019-01-01 – 2019-03-310 USD20200508Open filing evidence
2018-01-01 – 2018-12-310 USD20200227Open filing evidence
2018-07-01 – 2018-09-300 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-300 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-300 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-310 USD20190508Open filing evidence
2017-01-01 – 2017-12-310 USD20200227Open filing evidence
2017-07-01 – 2017-09-300 USD20181107Open filing evidence
2017-01-01 – 2017-09-300 USD20181107Open filing evidence
2016-01-01 – 2016-12-3129000 USD20190227Open filing evidence

Deposit Service Charges And Related Fee Income · Commercial Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-313799000 USD20200508Open filing evidence
2019-01-01 – 2019-12-3113564000 USD20200227Open filing evidence
2019-07-01 – 2019-09-303434000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-3010007000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-303299000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2019-01-01 – 2019-06-306573000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2019-01-01 – 2019-03-313274000 USD20200508Open filing evidence
2018-01-01 – 2018-12-3112326000 USD20200227Open filing evidence
2018-07-01 – 2018-09-303133000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-309147000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-303000000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-306014000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-313014000 USD20190508Open filing evidence
2017-01-01 – 2017-12-3111476000 USD20200227Open filing evidence
2017-07-01 – 2017-09-302973000 USD20181107Open filing evidence
2017-01-01 – 2017-09-308527000 USD20181107Open filing evidence
2016-01-01 – 2016-12-3110200000 USD20190227Open filing evidence

Deposit Service Charges And Related Fee Income · Consumerand Business Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:ConsumerandBusinessBankingMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-315544000 USD20200508Open filing evidence
2019-01-01 – 2019-12-3121327000 USD20200227Open filing evidence
2019-07-01 – 2019-09-305345000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-3015975000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-305397000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2019-01-01 – 2019-06-3010630000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2019-01-01 – 2019-03-315233000 USD20200508Open filing evidence
2018-01-01 – 2018-12-3122474000 USD20200227Open filing evidence
2018-07-01 – 2018-09-305488000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-3017240000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-305738000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-3011752000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-316014000 USD20190508Open filing evidence
2017-01-01 – 2017-12-3124109000 USD20200227Open filing evidence
2016-01-01 – 2016-12-3123965000 USD20190227Open filing evidence

Deposit Service Charges And Related Fee Income · Retail Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:RetailBankingMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-305488000 USD20181107Open filing evidence
2018-01-01 – 2018-09-3017240000 USD20181107Open filing evidence
2017-07-01 – 2017-09-306082000 USD20181107Open filing evidence
2017-01-01 – 2017-09-3018076000 USD20181107Open filing evidence

Deposit Service Charges And Related Fee Income · All Other Segments

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-316000 USD20200508Open filing evidence
2019-01-01 – 2019-12-3149000 USD20200227Open filing evidence
2019-07-01 – 2019-09-309000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-3035000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-3010000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2019-01-01 – 2019-06-3026000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2019-01-01 – 2019-03-3116000 USD20200508Open filing evidence
2018-01-01 – 2018-12-31423000 USD20200227Open filing evidence
2018-07-01 – 2018-09-306000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-30412000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-30248000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-30406000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-31158000 USD20190508Open filing evidence
2017-01-01 – 2017-12-31464000 USD20200227Open filing evidence
2017-07-01 – 2017-09-30132000 USD20181107Open filing evidence
2017-01-01 – 2017-09-30358000 USD20181107Open filing evidence
2016-01-01 – 2016-12-31345000 USD20190227Open filing evidence

Wealth Management Fees · Commercial Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:WealthManagementFeesMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-31340000 USD20200508Open filing evidence
2019-01-01 – 2019-12-31827000 USD20200227Open filing evidence
2019-07-01 – 2019-09-30197000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-30538000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-30235000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2019-01-01 – 2019-06-30341000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2019-01-01 – 2019-03-31106000 USD20200508Open filing evidence
2018-01-01 – 2018-12-31428000 USD20200227Open filing evidence
2018-07-01 – 2018-09-30134000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-30291000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-300 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-30157000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-31157000 USD20190508Open filing evidence
2017-01-01 – 2017-12-311756000 USD20200227Open filing evidence
2017-07-01 – 2017-09-30296000 USD20181107Open filing evidence
2017-01-01 – 2017-09-301517000 USD20181107Open filing evidence
2016-01-01 – 2016-12-313171000 USD20190227Open filing evidence

Wealth Management Fees · Consumerand Business Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:WealthManagementFeesMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:ConsumerandBusinessBankingMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-302691000 USD20200810Open filing evidence
2020-01-01 – 2020-06-307704000 USD20200810Open filing evidence
2020-01-01 – 2020-03-315017000 USD20200508Open filing evidence
2019-01-01 – 2019-12-3115841000 USD20200227Open filing evidence
2019-07-01 – 2019-09-304644000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-3011915000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-303565000 USD20200810Open filing evidence
2019-01-01 – 2019-06-307233000 RestatedUSD20200810Open filing evidence
2019-01-01 – 2019-03-313706000 USD20200508Open filing evidence
2018-01-01 – 2018-12-3113357000 USD20200227Open filing evidence
2018-07-01 – 2018-09-303401000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-3010698000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-304501000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-307297000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-312796000 USD20190508Open filing evidence
2017-01-01 – 2017-12-3112218000 USD20200227Open filing evidence
2016-01-01 – 2016-12-319425000 USD20190227Open filing evidence

Wealth Management Fees · Retail Banking

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:WealthManagementFeesMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:RetailBankingMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-303401000 USD20181107Open filing evidence
2018-01-01 – 2018-09-3010698000 USD20181107Open filing evidence
2017-07-01 – 2017-09-303165000 USD20181107Open filing evidence
2017-01-01 – 2017-09-309660000 USD20181107Open filing evidence

Wealth Management Fees · All Other Segments

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=ewbc:WealthManagementFeesMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-300 USD20200810Open filing evidence
2020-01-01 – 2020-06-300 USD20200810Open filing evidence
2020-01-01 – 2020-03-310 USD20200508Open filing evidence
2019-01-01 – 2019-12-310 USD20200227Open filing evidence
2019-07-01 – 2019-09-300 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-01-01 – 2019-09-300 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2019-04-01 – 2019-06-300 USD20200810Open filing evidence
2019-01-01 – 2019-06-300 USD20200810Open filing evidence
2019-01-01 – 2019-03-310 USD20200508Open filing evidence
2018-01-01 – 2018-12-310 USD20200227Open filing evidence
2018-07-01 – 2018-09-300 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-300 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-300 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-300 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-310 USD20190508Open filing evidence
2017-01-01 – 2017-12-310 USD20200227Open filing evidence
2017-07-01 – 2017-09-300 USD20181107Open filing evidence
2017-01-01 – 2017-09-300 USD20181107Open filing evidence
2016-01-01 – 2016-12-314000 USD20190227Open filing evidence

Card Income · Commercial Banking

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:CardIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-30221000 USD20180807Open filing evidence
2018-01-01 – 2018-06-30395000 USD20180807Open filing evidence
2018-01-01 – 2018-03-31174000 USD20180508Open filing evidence
2017-04-01 – 2017-06-30202000 USD20180807Open filing evidence
2017-01-01 – 2017-06-30415000 USD20180807Open filing evidence
2017-01-01 – 2017-03-31213000 USD20180508Open filing evidence

Card Income · Retail Banking

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:CardIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:RetailBankingMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-30933000 USD20180807Open filing evidence
2018-01-01 – 2018-06-302003000 USD20180807Open filing evidence
2018-01-01 – 2018-03-311070000 USD20180508Open filing evidence
2017-04-01 – 2017-06-301029000 USD20180807Open filing evidence
2017-01-01 – 2017-06-302056000 USD20180807Open filing evidence
2017-01-01 – 2017-03-311027000 USD20180508Open filing evidence

Card Income · All Other Segments

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:CardIncomeMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-300 USD20180807Open filing evidence
2018-01-01 – 2018-06-300 USD20180807Open filing evidence
2018-01-01 – 2018-03-310 USD20180508Open filing evidence
2017-04-01 – 2017-06-300 USD20180807Open filing evidence
2017-01-01 – 2017-06-300 USD20180807Open filing evidence
2017-01-01 – 2017-03-310 USD20180508Open filing evidence

Deposit Service Charges And Related Fee Income · Commercial Banking

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-303000000 USD20180807Open filing evidence
2018-01-01 – 2018-06-306014000 USD20180807Open filing evidence
2018-01-01 – 2018-03-313014000 USD20180508Open filing evidence
2017-04-01 – 2017-06-302812000 USD20180807Open filing evidence
2017-01-01 – 2017-06-305554000 USD20180807Open filing evidence
2017-01-01 – 2017-03-312742000 USD20180508Open filing evidence

Deposit Service Charges And Related Fee Income · Retail Banking

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:RetailBankingMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-305738000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3011752000 USD20180807Open filing evidence
2018-01-01 – 2018-03-316014000 USD20180508Open filing evidence
2017-04-01 – 2017-06-306157000 USD20180807Open filing evidence
2017-01-01 – 2017-06-3011994000 USD20180807Open filing evidence
2017-01-01 – 2017-03-315837000 USD20180508Open filing evidence

Deposit Service Charges And Related Fee Income · All Other Segments

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-30248000 USD20180807Open filing evidence
2018-01-01 – 2018-06-30406000 USD20180807Open filing evidence
2018-01-01 – 2018-03-31158000 USD20180508Open filing evidence
2017-04-01 – 2017-06-30121000 USD20180807Open filing evidence
2017-01-01 – 2017-06-30226000 USD20180807Open filing evidence
2017-01-01 – 2017-03-31105000 USD20180508Open filing evidence

Wealth Management Fees · Commercial Banking

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:WealthManagementFeesMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-300 USD20180807Open filing evidence
2018-01-01 – 2018-06-30157000 USD20180807Open filing evidence
2018-01-01 – 2018-03-31157000 USD20180508Open filing evidence
2017-04-01 – 2017-06-30132000 USD20180807Open filing evidence
2017-01-01 – 2017-06-301221000 USD20180807Open filing evidence
2017-01-01 – 2017-03-311089000 USD20180508Open filing evidence

Wealth Management Fees · Retail Banking

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:WealthManagementFeesMember;us-gaap:StatementBusinessSegmentsAxis=ewbc:RetailBankingMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-304501000 USD20180807Open filing evidence
2018-01-01 – 2018-06-307297000 USD20180807Open filing evidence
2018-01-01 – 2018-03-312796000 USD20180508Open filing evidence
2017-04-01 – 2017-06-303249000 USD20180807Open filing evidence
2017-01-01 – 2017-06-306495000 USD20180807Open filing evidence
2017-01-01 – 2017-03-313246000 USD20180508Open filing evidence

Wealth Management Fees · All Other Segments

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=ewbc:WealthManagementFeesMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-300 USD20180807Open filing evidence
2018-01-01 – 2018-06-300 USD20180807Open filing evidence
2018-01-01 – 2018-03-310 USD20180508Open filing evidence
2017-04-01 – 2017-06-300 USD20180807Open filing evidence
2017-01-01 – 2017-06-300 USD20180807Open filing evidence
2017-01-01 – 2017-03-310 USD20180508Open filing evidence

Commercial Banking

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-304723000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3013488000 USD20201106Open filing evidence
2020-04-01 – 2020-06-304426000 USD20200810Open filing evidence
2020-01-01 – 2020-06-308765000 USD20200810Open filing evidence
2020-01-01 – 2020-03-314339000 USD20200508Open filing evidence
2019-01-01 – 2019-12-3115067000 USD20200227Open filing evidence
2019-07-01 – 2019-09-303776000 USD20201106Open filing evidence
2019-01-01 – 2019-09-3011029000 USD20201106Open filing evidence
2019-04-01 – 2019-06-303688000 USD20200810Open filing evidence
2019-01-01 – 2019-06-307253000 USD20200810Open filing evidence
2019-01-01 – 2019-03-313565000 USD20200508Open filing evidence
2018-01-01 – 2018-12-3113511000 RestatedUSD20200227Open filing evidence
2018-07-01 – 2018-09-303468000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-3010034000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-303221000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-306566000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-313345000 USD20190508Open filing evidence
2017-01-01 – 2017-12-3114017000 RestatedUSD20200227Open filing evidence
2017-07-01 – 2017-09-303479000 USD20181107Open filing evidence
2017-01-01 – 2017-09-3010669000 USD20181107Open filing evidence
2017-04-01 – 2017-06-303146000 USD20180807Open filing evidence
2017-01-01 – 2017-06-307190000 USD20180807Open filing evidence
2017-01-01 – 2017-03-314044000 USD20180508Open filing evidence
2016-01-01 – 2016-12-3114134000 USD20190227Open filing evidence

Commercial Banking · Card Income

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember;srt:ProductOrServiceAxis=ewbc:CardIncomeMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-30184000 USD20201106Open filing evidence
2020-01-01 – 2020-09-30506000 USD20201106Open filing evidence
2019-07-01 – 2019-09-30145000 USD20201106Open filing evidence
2019-01-01 – 2019-09-30484000 USD20201106Open filing evidence

Commercial Banking · Deposit Service Charges And Related Fee Income

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember;srt:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-304539000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3012242000 USD20201106Open filing evidence
2020-04-01 – 2020-06-303904000 USD20200810Open filing evidence
2020-01-01 – 2020-06-307703000 USD20200810Open filing evidence
2019-07-01 – 2019-09-303434000 USD20201106Open filing evidence
2019-01-01 – 2019-09-3010007000 USD20201106Open filing evidence
2019-04-01 – 2019-06-303299000 USD20200810Open filing evidence
2019-01-01 – 2019-06-306573000 USD20200810Open filing evidence

Commercial Banking · Wealth Management Fees

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:CommercialBankingMember;srt:ProductOrServiceAxis=ewbc:WealthManagementFeesMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-300 USD20201106Open filing evidence
2020-01-01 – 2020-09-30740000 USD20201106Open filing evidence
2020-04-01 – 2020-06-30400000 USD20200810Open filing evidence
2020-01-01 – 2020-06-30740000 USD20200810Open filing evidence
2019-07-01 – 2019-09-30197000 USD20201106Open filing evidence
2019-01-01 – 2019-09-30538000 USD20201106Open filing evidence
2019-04-01 – 2019-06-30235000 USD20200810Open filing evidence
2019-01-01 – 2019-06-30341000 USD20200810Open filing evidence

Consumerand Business Banking

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:ConsumerandBusinessBankingMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-3012396000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3033347000 USD20201106Open filing evidence
2020-04-01 – 2020-06-309496000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3020951000 USD20200810Open filing evidence
2020-01-01 – 2020-03-3111459000 USD20200508Open filing evidence
2019-01-01 – 2019-12-3140200000 USD20200227Open filing evidence
2019-07-01 – 2019-09-3010785000 RestatedUSD20201106Open filing evidence
2019-01-01 – 2019-09-3030155000 RestatedUSD20201106Open filing evidence
2019-04-01 – 2019-06-309709000 RestatedUSD20200810Open filing evidence
2019-01-01 – 2019-06-3019370000 RestatedUSD20200810Open filing evidence
2019-01-01 – 2019-03-319699000 RestatedUSD20200508Open filing evidence
2018-01-01 – 2018-12-3139027000 RestatedUSD20200227Open filing evidence
2018-07-01 – 2018-09-309838000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-3030890000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-3011172000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-3021052000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-319880000 USD20190508Open filing evidence
2017-01-01 – 2017-12-3139792000 RestatedUSD20200227Open filing evidence
2016-01-01 – 2016-12-3137742000 USD20190227Open filing evidence

Consumerand Business Banking · Card Income

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:ConsumerandBusinessBankingMember;srt:ProductOrServiceAxis=ewbc:CardIncomeMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-30848000 USD20201106Open filing evidence
2020-01-01 – 2020-09-302385000 USD20201106Open filing evidence
2019-07-01 – 2019-09-30796000 USD20201106Open filing evidence
2019-01-01 – 2019-09-302303000 USD20201106Open filing evidence

Consumerand Business Banking · Deposit Service Charges And Related Fee Income

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:ConsumerandBusinessBankingMember;srt:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-306995000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3018705000 USD20201106Open filing evidence
2020-04-01 – 2020-06-306166000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3011710000 USD20200810Open filing evidence
2019-07-01 – 2019-09-305345000 USD20201106Open filing evidence
2019-01-01 – 2019-09-3015975000 USD20201106Open filing evidence
2019-04-01 – 2019-06-305397000 USD20200810Open filing evidence
2019-01-01 – 2019-06-3010630000 USD20200810Open filing evidence

Consumerand Business Banking · Wealth Management Fees

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:ConsumerandBusinessBankingMember;srt:ProductOrServiceAxis=ewbc:WealthManagementFeesMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-304553000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3012257000 USD20201106Open filing evidence
2019-07-01 – 2019-09-304644000 USD20201106Open filing evidence
2019-01-01 – 2019-09-3011877000 USD20201106Open filing evidence

Retail Banking

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=ewbc:RetailBankingMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-309838000 USD20181107Open filing evidence
2018-01-01 – 2018-09-3030890000 USD20181107Open filing evidence
2018-04-01 – 2018-06-3011172000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3021052000 USD20180807Open filing evidence
2018-01-01 – 2018-03-319880000 USD20180508Open filing evidence
2017-07-01 – 2017-09-3010243000 USD20181107Open filing evidence
2017-01-01 – 2017-09-3030788000 USD20181107Open filing evidence
2017-04-01 – 2017-06-3010435000 USD20180807Open filing evidence
2017-01-01 – 2017-06-3020545000 USD20180807Open filing evidence
2017-01-01 – 2017-03-3110110000 USD20180508Open filing evidence

All Other Segments

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-307000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3054000 USD20201106Open filing evidence
2020-04-01 – 2020-06-3041000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3047000 USD20200810Open filing evidence
2020-01-01 – 2020-03-316000 USD20200508Open filing evidence
2019-01-01 – 2019-12-3149000 USD20200227Open filing evidence
2019-07-01 – 2019-09-309000 USD20201106Open filing evidence
2019-01-01 – 2019-09-3035000 USD20201106Open filing evidence
2019-04-01 – 2019-06-3010000 USD20200810Open filing evidence
2019-01-01 – 2019-06-3026000 USD20200810Open filing evidence
2019-01-01 – 2019-03-3116000 USD20200508Open filing evidence
2018-01-01 – 2018-12-31423000 USD20200227Open filing evidence
2018-07-01 – 2018-09-306000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-01-01 – 2018-09-30412000 USD2019-11-08 · 22:17:44.000ZOpen filing evidence
2018-04-01 – 2018-06-30248000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-06-30406000 USD2019-08-07 · 19:59:39.000ZOpen filing evidence
2018-01-01 – 2018-03-31158000 USD20190508Open filing evidence
2017-01-01 – 2017-12-31464000 USD20200227Open filing evidence
2017-07-01 – 2017-09-30132000 USD20181107Open filing evidence
2017-01-01 – 2017-09-30358000 USD20181107Open filing evidence
2017-04-01 – 2017-06-30121000 USD20180807Open filing evidence
2017-01-01 – 2017-06-30226000 USD20180807Open filing evidence
2017-01-01 – 2017-03-31105000 USD20180508Open filing evidence
2016-01-01 – 2016-12-31378000 USD20190227Open filing evidence

All Other Segments · Card Income

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember;srt:ProductOrServiceAxis=ewbc:CardIncomeMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-300 USD20201106Open filing evidence
2020-01-01 – 2020-09-300 USD20201106Open filing evidence
2019-07-01 – 2019-09-300 USD20201106Open filing evidence
2019-01-01 – 2019-09-300 USD20201106Open filing evidence

All Other Segments · Deposit Service Charges And Related Fee Income

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember;srt:ProductOrServiceAxis=ewbc:DepositServiceChargesAndRelatedFeeIncomeMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-307000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3054000 USD20201106Open filing evidence
2020-04-01 – 2020-06-3041000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3047000 USD20200810Open filing evidence
2019-07-01 – 2019-09-309000 USD20201106Open filing evidence
2019-01-01 – 2019-09-3035000 USD20201106Open filing evidence
2019-04-01 – 2019-06-3010000 USD20200810Open filing evidence
2019-01-01 – 2019-06-3026000 USD20200810Open filing evidence

All Other Segments · Wealth Management Fees

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember;srt:ProductOrServiceAxis=ewbc:WealthManagementFeesMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-300 USD20201106Open filing evidence
2020-01-01 – 2020-09-300 USD20201106Open filing evidence
2019-07-01 – 2019-09-300 USD20201106Open filing evidence
2019-01-01 – 2019-09-300 USD20201106Open filing evidence