$EWBC
EAST WEST BANCORP INC Stock $ewbc

$ewbc Overview Financials Valuation SEC Filings Company Website

2019 Q2 Form 10-Q Financial Statement

#000106915719000047 Filed on August 07, 2019

Income Statement

Concept	2019 Q2	2018 Q2	2018 Q1
Revenue	$474.8M	$400.3M	$371.9M
YoY Change	18.62%	24.02%	22.86%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$32.60M	$32.40M	$29.86M
YoY Change	0.62%	-29.72%	-9.69%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$107.5M	$58.63M	$45.18M
YoY Change	83.38%	79.39%	47.9%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$223.2M	$197.0M	$211.8M
YoY Change	13.29%	24.93%	-7.11%
Income Tax	$72.80M	$24.64M	$24.75M
% Of Pretax Income	32.62%	12.51%	11.69%
Net Earnings	$150.4M	$172.3M	$187.0M
YoY Change	-12.75%	45.65%	10.19%
Net Earnings / Revenue	31.67%	43.05%	50.29%
Basic Earnings Per Share	$1.03	$1.19	$1.29
Diluted Earnings Per Share	$1.03	$1.18	$1.28
COMMON SHARES
Basic Shares Outstanding	145.5M shares	144.9M shares	144.7M shares
Diluted Shares Outstanding	146.1M shares	146.1M shares	145.9M shares

Balance Sheet

Concept	2019 Q2	2018 Q2	2018 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$3.622B	$2.297B	$2.315B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$121.5M	$122.1M	$119.7M
YoY Change	-0.47%	-4.84%	-6.46%
Goodwill	$465.7M	$465.5M	$465.5M
YoY Change	0.03%	-0.82%	-0.82%
Intangibles
YoY Change
Long-Term Investments	$198.0M	$153.0M	$161.0M
YoY Change	29.41%	-9.47%	-9.04%
Other Assets		$0.00	$104.0M
YoY Change		-100.0%	-16.13%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$42.89B	$38.04B	$37.67B
YoY Change	12.75%	5.92%	6.59%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$540.0M	$473.0M	$448.0M
YoY Change	14.16%	8.49%	8.47%
Deferred Revenue
YoY Change
Short-Term Debt	$19.97M	$58.52M	$30.28M
YoY Change	-65.87%	139.59%	-27.95%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$540.0M	$473.0M	$448.0M
YoY Change	14.16%	8.49%	8.47%
LONG-TERM LIABILITIES
Long-Term Debt	$153.0M	$162.0M	$167.0M
YoY Change	-5.56%	-7.95%	-7.73%
Other Long-Term Liabilities	$173.0M	$115.0M	$87.00M
YoY Change	50.43%	38.55%	17.57%
Total Long-Term Liabilities	$326.0M	$277.0M	$254.0M
YoY Change	17.69%	6.95%	-0.39%
TOTAL LIABILITIES
Total Short-Term Liabilities	$540.0M	$473.0M	$448.0M
Total Long-Term Liabilities	$326.0M	$277.0M	$254.0M
Total Liabilities	$38.16B	$33.96B	$33.71B
YoY Change	12.37%	5.31%	6.1%
SHAREHOLDERS EQUITY
Retained Earnings	$3.415B	$2.883B	$2.740B
YoY Change	18.44%	19.27%	17.69%
Common Stock	$166.0K	$166.0K	$166.0K
YoY Change	0.0%	0.61%	1.22%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$479.4M	$452.3M	$452.3M
YoY Change	5.98%	0.15%	0.17%
Treasury Stock Shares	20.99M shares	20.67M shares	20.67M shares
Shareholders Equity	$4.735B	$4.114B	$3.979B
YoY Change
Total Liabilities & Shareholders Equity	$42.89B	$38.07B	$37.69B
YoY Change	12.66%	6.0%	6.65%

Cashflow Statement

Concept	2019 Q2	2018 Q2	2018 Q1
OPERATING ACTIVITIES
Net Income	$150.4M	$172.3M	$187.0M
YoY Change	-12.75%	45.65%	10.19%
Depreciation, Depletion And Amortization	$32.60M	$32.40M	$29.86M
YoY Change	0.62%	-29.72%	-9.69%
Cash From Operating Activities	$150.8M	$217.0M	$217.9M
YoY Change	-30.51%	10.32%	16.95%
INVESTING ACTIVITIES
Capital Expenditures	-$1.100M	-$5.800M	$1.757M
YoY Change	-81.03%	52.63%	47.52%
Acquisitions
YoY Change
Other Investing Activities	-$877.4M	-$429.4M	$1.967M
YoY Change	104.33%	0.02%	-119.0%
Cash From Investing Activities	-$878.5M	-$435.3M	-$1.040B
YoY Change	101.81%	0.53%	387.49%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	578.5M	228.2M	$944.4M
YoY Change	153.51%	-58.37%	62.7%
NET CHANGE
Cash From Operating Activities	150.8M	217.0M	$217.9M
Cash From Investing Activities	-878.5M	-435.3M	-$1.040B
Cash From Financing Activities	578.5M	228.2M	$944.4M
Net Change In Cash	-149.2M	9.900M	$140.3M
YoY Change	-1607.07%	-96.82%	-74.64%
FREE CASH FLOW
Cash From Operating Activities	$150.8M	$217.0M	$217.9M
Capital Expenditures	-$1.100M	-$5.800M	$1.757M
Free Cash Flow	$151.9M	$222.8M	$216.1M
YoY Change	-31.82%	11.12%	16.76%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0001069157
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	dei	Local Phone Number LocalPhoneNumber	768-6000
	dei	Security12b Title Security12bTitle	Common Stock, $0.001 Par Value
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	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
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	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.505
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	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-06-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	000-24939
	dei	Entity Registrant Name EntityRegistrantName	EAST WEST BANCORP, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-4703316
	dei	Entity Address Address Line1 EntityAddressAddressLine1	135 North Los Robles Ave.
	dei	Entity Address Address Line2 EntityAddressAddressLine2	7th Floor
	dei	Entity Address City Or Town EntityAddressCityOrTown	Pasadena
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	91101
	dei	City Area Code CityAreaCode	626
	dei	Trading Symbol TradingSymbol	EWBC
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2018Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	326143000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	687963000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	632618000	USD
CY2019Q2	ewbc	Lending Fees LendingFees	16242000	USD
CY2018Q2	ewbc	Lending Fees LendingFees	14692000	USD
	ewbc	Lending Fees LendingFees	31038000	USD
	ewbc	Lending Fees LendingFees	28705000	USD
CY2019Q2	ewbc	Depositaccountfees Depositaccountfees	9788000	USD
CY2018Q2	ewbc	Depositaccountfees Depositaccountfees	10140000	USD
	ewbc	Depositaccountfees Depositaccountfees	19429000	USD
	ewbc	Depositaccountfees Depositaccountfees	20570000	USD
CY2019Q2	ewbc	Foreignexchangeincome Foreignexchangeincome	7286000	USD
CY2018Q2	ewbc	Foreignexchangeincome Foreignexchangeincome	6822000	USD
	ewbc	Foreignexchangeincome Foreignexchangeincome	12301000	USD
	ewbc	Foreignexchangeincome Foreignexchangeincome	7992000	USD
CY2019Q2	ewbc	Wealth Management Fees WealthManagementFees	3800000	USD
CY2018Q2	ewbc	Wealth Management Fees WealthManagementFees	4501000	USD
	ewbc	Wealth Management Fees WealthManagementFees	7612000	USD
	ewbc	Wealth Management Fees WealthManagementFees	7454000	USD
CY2019Q2	ewbc	Interestratecontractsandotherderivativeincome Interestratecontractsandotherderivativeincome	10398000	USD
CY2018Q2	ewbc	Interestratecontractsandotherderivativeincome Interestratecontractsandotherderivativeincome	6570000	USD
	ewbc	Interestratecontractsandotherderivativeincome Interestratecontractsandotherderivativeincome	13614000	USD
	ewbc	Interestratecontractsandotherderivativeincome Interestratecontractsandotherderivativeincome	13260000	USD
CY2019Q2	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	15000	USD
CY2018Q2	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2354000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	930000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3936000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	1447000	USD
CY2018Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	210000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	3008000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	2339000	USD
CY2019Q2	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2018Q2	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	31470000	USD
CY2019Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3783000	USD
CY2018Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2979000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6958000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6986000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	52759000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	48268000	USD
	us-gaap	Noninterest Income NoninterestIncome	94890000	USD
	us-gaap	Noninterest Income NoninterestIncome	122712000	USD
CY2019Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	100531000	USD
CY2018Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	93865000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	202830000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	189099000	USD
CY2019Q2	us-gaap	Occupancy Net OccupancyNet	17362000	USD
CY2018Q2	us-gaap	Occupancy Net OccupancyNet	16707000	USD
	us-gaap	Occupancy Net OccupancyNet	34680000	USD
	us-gaap	Occupancy Net OccupancyNet	33587000	USD
CY2019Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2919000	USD
CY2018Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	5832000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	6007000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	12105000	USD
CY2019Q2	us-gaap	Legal Fees LegalFees	2355000	USD
CY2018Q2	us-gaap	Legal Fees LegalFees	2837000	USD
	us-gaap	Legal Fees LegalFees	4580000	USD
	us-gaap	Legal Fees LegalFees	5092000	USD
CY2019Q2	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3460000	USD
CY2018Q2	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3327000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6617000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6728000	USD
CY2019Q2	us-gaap	Professional Fees ProfessionalFees	2069000	USD
CY2018Q2	us-gaap	Professional Fees ProfessionalFees	5120000	USD
	us-gaap	Professional Fees ProfessionalFees	4128000	USD
	us-gaap	Professional Fees ProfessionalFees	7472000	USD
CY2019Q2	ewbc	Deposit Related Expenses DepositRelatedExpenses	3338000	USD
CY2018Q2	ewbc	Deposit Related Expenses DepositRelatedExpenses	2922000	USD
	ewbc	Deposit Related Expenses DepositRelatedExpenses	6842000	USD
	ewbc	Deposit Related Expenses DepositRelatedExpenses	5601000	USD
CY2019Q2	ewbc	Computer Software Expense ComputerSoftwareExpense	6211000	USD
CY2018Q2	ewbc	Computer Software Expense ComputerSoftwareExpense	5549000	USD
	ewbc	Computer Software Expense ComputerSoftwareExpense	12289000	USD
	ewbc	Computer Software Expense ComputerSoftwareExpense	10603000	USD
CY2019Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	22679000	USD
CY2018Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	20779000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	44968000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	38386000	USD
CY2019Q2	ewbc	Noninterest Expense Amortization Of Tax Credit Investments NoninterestExpenseAmortizationOfTaxCreditInvestments	16739000	USD
CY2018Q2	ewbc	Noninterest Expense Amortization Of Tax Credit Investments NoninterestExpenseAmortizationOfTaxCreditInvestments	20481000	USD
	ewbc	Noninterest Expense Amortization Of Tax Credit Investments NoninterestExpenseAmortizationOfTaxCreditInvestments	41644000	USD
	ewbc	Noninterest Expense Amortization Of Tax Credit Investments NoninterestExpenseAmortizationOfTaxCreditInvestments	37881000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	177663000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	177419000	USD
	us-gaap	Noninterest Expense NoninterestExpense	364585000	USD
	us-gaap	Noninterest Expense NoninterestExpense	346554000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	223177000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	196992000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	418268000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	408776000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	72797000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24643000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	103864000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	49395000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	150380000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	172349000	USD
	us-gaap	Net Income Loss NetIncomeLoss	314404000	USD
	us-gaap	Net Income Loss NetIncomeLoss	359381000	USD
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.16
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.48
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.03
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.18
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.15
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.46
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145546000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	144899000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145402000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	144782000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146052000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146091000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146016000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146046000	shares
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	150380000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	172349000	USD
	us-gaap	Net Income Loss NetIncomeLoss	314404000	USD
	us-gaap	Net Income Loss NetIncomeLoss	359381000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	29027000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-8841000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	51038000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-27653000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-6016000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-6822000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-2836000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-24000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	23011000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-15663000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	48202000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-27677000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	173391000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	156686000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	362606000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	331704000	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	3978755000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	172349000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-15663000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	8170000	USD
CY2018Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29327000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	4114284000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	4591930000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	150380000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	23011000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	9805000	USD
CY2019Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	40533000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	4734593000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	3841951000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-160000	USD
	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	0	USD
	us-gaap	Net Income Loss NetIncomeLoss	359381000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-27677000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-618000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	58593000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	4114284000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	4423974000	USD
CY2019Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	14668000	USD
	us-gaap	Net Income Loss NetIncomeLoss	314404000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	48202000	USD
	ewbc	Stock Issued During Period Value Warrants Exercised StockIssuedDuringPeriodValueWarrantsExercised	4443000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3205000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	74303000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	4734593000	USD
	us-gaap	Net Income Loss NetIncomeLoss	314404000	USD
	us-gaap	Net Income Loss NetIncomeLoss	359381000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	72113000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	62329000	USD
	ewbc	Accretion Amortizationof Discountand Premiums Net AccretionAmortizationofDiscountandPremiumsNet	9817000	USD
	ewbc	Accretion Amortizationof Discountand Premiums Net AccretionAmortizationofDiscountandPremiumsNet	9910000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	15525000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	13215000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2110000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1320000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	41824000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	35754000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	930000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3936000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	3008000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	2339000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	2200000	USD
	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	31470000	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	3339000	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	11547000	USD
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	3632000	USD
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	10759000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	1538000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	1814000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	150154000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	32226000	USD
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	10320000	USD
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	44016000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	3000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-93000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	222387000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	28525000	USD
	us-gaap	Proceeds From Securities Purchased Under Agreements To Resell ProceedsFromSecuritiesPurchasedUnderAgreementsToResell	50000000	USD
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-24403000	USD
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	75486000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	290001000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	434867000	USD
	ewbc	Paymentsor Proceedsfrom Qualified Affordable Housing Partnershipsand Other Tax Credit Investments PaymentsorProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments	61555000	USD
	ewbc	Paymentsor Proceedsfrom Qualified Affordable Housing Partnershipsand Other Tax Credit Investments PaymentsorProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments	41444000	USD
	us-gaap	Proceeds From Securities Purchased Under Agreements To Resell ProceedsFromSecuritiesPurchasedUnderAgreementsToResell	175000000	USD
	us-gaap	Payments For Securities Purchased Under Agreements To Resell PaymentsForSecuritiesPurchasedUnderAgreementsToResell	25000000	USD
	us-gaap	Payments For Securities Purchased Under Agreements To Resell PaymentsForSecuritiesPurchasedUnderAgreementsToResell	100000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	375102000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	256875000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	117325000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	211303000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	316740000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	235360000	USD
	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	170174000	USD
	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	274785000	USD
	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	326456000	USD
	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	389912000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1196094000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1147156000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4414000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7612000	USD
	ewbc	Net Cash Outflow On Sale Of Business NetCashOutflowOnSaleOfBusiness	0	USD
	ewbc	Net Cash Outflow On Sale Of Business NetCashOutflowOnSaleOfBusiness	503687000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	3595000	USD
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	3636000	USD
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1725000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	5516000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2200000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-997151000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1475563000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1035650000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1195796000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-38107000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	59895000	USD
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	1500000000	USD
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	0	USD
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	1082000000	USD
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	0	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	435000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	10000000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	1894000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	1328000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	14169000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	15161000	USD
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	74949000	USD
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	59243000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1327884000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1172615000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-497000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-9040000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	620237000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	122879000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3001377000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2174592000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3621614000	USD
CY2018Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2297471000	USD
	us-gaap	Interest Paid Net InterestPaidNet	203577000	USD
	us-gaap	Interest Paid Net InterestPaidNet	99176000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	76153000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	67431000	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	173394000	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	285631000	USD
CY2019Q2	ewbc	Number Of Wholly Owned Statutory Business Trusts NumberOfWhollyOwnedStatutoryBusinessTrusts	6	trust
CY2019Q2	ewbc	Assets Purchased Under Agreementsto Resell Yield AssetsPurchasedUnderAgreementstoResellYield	0.0270
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	400000000.0	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	450000000.0	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	1410000000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	1440000000	USD
	ewbc	Assets Purchased Under Agreementsto Repurchase Interest Rate AssetsPurchasedUnderAgreementstoRepurchaseInterestRate	0.0421
CY2018Q2	ewbc	Assets Purchased Under Agreementsto Resell Yield AssetsPurchasedUnderAgreementstoResellYield	0.0263
	ewbc	Assets Purchased Under Agreementsto Resell Yield AssetsPurchasedUnderAgreementstoResellYield	0.0275
	ewbc	Assets Purchased Under Agreementsto Resell Yield AssetsPurchasedUnderAgreementstoResellYield	0.0257
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	450000000.0	USD
CY2019Q2	ewbc	Assets Purchased Under Agreementsto Repurchase Interest Rate AssetsPurchasedUnderAgreementstoRepurchaseInterestRate	0.0493
CY2018Q2	ewbc	Assets Purchased Under Agreementsto Repurchase Interest Rate AssetsPurchasedUnderAgreementstoRepurchaseInterestRate	0.0448
	ewbc	Assets Purchased Under Agreementsto Repurchase Interest Rate AssetsPurchasedUnderAgreementstoRepurchaseInterestRate	0.0497
CY2019Q2	ewbc	Securities Sold Under Agreements To Repurchase Maturing Remainderof Fiscal Year SecuritiesSoldUnderAgreementsToRepurchaseMaturingRemainderofFiscalYear	0	USD
CY2019Q2	ewbc	Securities Sold Under Agreements To Repurchase Maturingin Year Two SecuritiesSoldUnderAgreementsToRepurchaseMaturinginYearTwo	0	USD
CY2019Q2	ewbc	Securities Sold Under Agreements To Repurchase Maturingin Year Three SecuritiesSoldUnderAgreementsToRepurchaseMaturinginYearThree	0	USD
CY2019Q2	ewbc	Securities Sold Under Agreements To Repurchase Maturingin Year Four SecuritiesSoldUnderAgreementsToRepurchaseMaturinginYearFour	150000000	USD
CY2019Q2	ewbc	Securities Sold Under Agreements To Repurchase Maturingin Year Five SecuritiesSoldUnderAgreementsToRepurchaseMaturinginYearFive	300000000	USD
CY2019Q2	ewbc	Securities Sold Under Agreements To Repurchase Year Six And Thereafter SecuritiesSoldUnderAgreementsToRepurchaseYearSixAndThereafter	0	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	450000000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	1410000000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	400000000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	1010000000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Securities SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities	1010000000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Amount Offset Against Collateral SecuritiesPurchasedUnderAgreementsToResellAmountOffsetAgainstCollateral	0	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	450000000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	400000000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	50000000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	50000000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	1435000000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	400000000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	1035000000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Securities SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities	1025066000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Amount Offset Against Collateral SecuritiesPurchasedUnderAgreementsToResellAmountOffsetAgainstCollateral	9934000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	450000000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	400000000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	50000000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	50000000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	2585505000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	21229000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	13821000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2592913000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	2806900000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	5714000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	70767000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2741847000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	100546000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	510000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1074195000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	13311000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1174741000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	13821000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	163128000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1518000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	2087534000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	69249000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	2250662000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	70767000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	76	security
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	184	security
CY2019Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	223763000	USD
CY2018Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	42085000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	375102000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	256875000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1447000	USD
CY2018Q2	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	210000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	3008000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	2339000	USD
CY2019Q2	ewbc	Tax Expenseon Saleof Availablefor Sale Debt Investment Securities TaxExpenseonSaleofAvailableforSaleDebtInvestmentSecurities	428000	USD
CY2018Q2	ewbc	Tax Expenseon Saleof Availablefor Sale Debt Investment Securities TaxExpenseonSaleofAvailableforSaleDebtInvestmentSecurities	62000	USD
	ewbc	Tax Expenseon Saleof Availablefor Sale Debt Investment Securities TaxExpenseonSaleofAvailableforSaleDebtInvestmentSecurities	889000	USD
	ewbc	Tax Expenseon Saleof Availablefor Sale Debt Investment Securities TaxExpenseonSaleofAvailableforSaleDebtInvestmentSecurities	690000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	586072000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	581305000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	432912000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	430486000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	193117000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	196457000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1373404000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1384665000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	2585505000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2592913000	USD
CY2019Q2	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	493700000	USD
CY2018Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	435800000	USD
CY2019Q2	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	57843000	USD
CY2018Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	56819000	USD
CY2019Q2	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	20250000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	17250000	USD
CY2019Q2	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	78093000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	74069000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	242876000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	172923000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	107816000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	118305000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	40372000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	40372000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	31569000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	31569000	USD
CY2019Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	3831000	USD
CY2019Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	34122000	USD
CY2018Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	13577000	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	6833000	USD
CY2019Q2	us-gaap	Derivative Assets DerivativeAssets	198673000	USD
CY2019Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	98429000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	62670000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	79903000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	62670000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	242876000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	40372000	USD
CY2019Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	3831000	USD
CY2019Q2	us-gaap	Derivative Assets DerivativeAssets	198673000	USD
CY2019Q2	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	0	USD
CY2019Q2	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	198673000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	172923000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	40372000	USD
CY2019Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	34122000	USD
CY2019Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	98429000	USD
CY2019Q2	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	76434000	USD
CY2019Q2	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	21995000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	107816000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	31569000	USD
CY2018Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	13577000	USD
CY2018Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	11231000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	68672000	USD
CY2019Q2	ewbc	Derivative Assets Subject To Master Netting Arrangements Gross Amounts Recognized DerivativeAssetsSubjectToMasterNettingArrangementsGrossAmountsRecognized	240800000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	13975000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	48695000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	118305000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	31569000	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	6833000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	79903000	USD
CY2018Q4	ewbc	Derivative Assets Subject To Master Netting Arrangements Gross Amounts Recognized DerivativeAssetsSubjectToMasterNettingArrangementsGrossAmountsRecognized	105900000	USD
CY2019Q2	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	2100000	USD
CY2019Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	34100000	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	6800000	USD
CY2018Q4	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	2000000.0	USD
CY2019Q2	ewbc	Derivative Liability Subject To Master Netting Arrangements Gross Amounts Recognized DerivativeLiabilitySubjectToMasterNettingArrangementsGrossAmountsRecognized	172900000	USD
CY2018Q4	ewbc	Derivative Liability Subject To Master Netting Arrangements Gross Amounts Recognized DerivativeLiabilitySubjectToMasterNettingArrangementsGrossAmountsRecognized	118200000	USD
CY2019Q2	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	17000	USD
CY2018Q4	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	102000	USD
CY2019Q2	ewbc	Derivative Cash Collateral Received Including Amount Offsetby Fair Value Assetsand Excess Cash Amount DerivativeCashCollateralReceivedIncludingAmountOffsetbyFairValueAssetsandExcessCashAmount	4600000	USD
CY2018Q4	ewbc	Derivative Cash Collateral Received Including Amount Offsetby Fair Value Assetsand Excess Cash Amount DerivativeCashCollateralReceivedIncludingAmountOffsetbyFairValueAssetsandExcessCashAmount	15800000	USD
CY2019Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	3800000	USD
CY2018Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	13600000	USD
CY2019Q2	ewbc	Derivative Cash Collateral Posted Against Derivative Liabilities Including Amount Offsetthe Derivative Fair Value Liabilitiesand Excess Cash Amount DerivativeCashCollateralPostedAgainstDerivativeLiabilitiesIncludingAmountOffsettheDerivativeFairValueLiabilitiesandExcessCashAmount	36400000	USD
CY2018Q4	ewbc	Derivative Cash Collateral Posted Against Derivative Liabilities Including Amount Offsetthe Derivative Fair Value Liabilitiesand Excess Cash Amount DerivativeCashCollateralPostedAgainstDerivativeLiabilitiesIncludingAmountOffsettheDerivativeFairValueLiabilitiesandExcessCashAmount	8400000	USD
CY2019Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	33730377000	USD
CY2018Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	32385189000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	330625000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	311322000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	33399752000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	32073867000	USD
CY2019Q2	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	21060000000.00	USD
CY2018Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	20590000000	USD
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">All loans are subject to the Company’s internal and external credit review and monitoring. For the commercial portfolio, loans are risk rated based on an analysis of the current state of the borrower’s credit quality. The analysis of credit quality includes a review of all repayment sources, the borrower’s current payment performance or delinquency, current financial and liquidity status, and all other relevant information. For the majority of the consumer portfolio, payment performance or delinquency is the driving indicator for the risk ratings. Risk ratings are the overall credit quality indicator for the Company and the credit quality indicator is utilized for estimating the appropriate allowance for loan losses. The risk rating system classifies loans within the following categories: Pass, Watch, Special Mention, Substandard, Doubtful and Loss. The risk ratings reflect the relative strength of the repayment sources.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Pass and Watch loans are loans that have sufficient sources of repayment in order to repay the loan in full in accordance with all terms and conditions. Special Mention loans are loans that have potential weaknesses that warrant closer attention by management. Special Mention is a transitory grade. If the potential weaknesses are resolved, a loan is upgraded to a Pass or Watch grade. If negative trends in the borrower’s financial status or other information indicate that the sources of repayment may become inadequate, a loan is downgraded to a Substandard grade. Substandard loans have well-defined weaknesses that may jeopardize the full and timely repayment of the loan. Substandard loans have the distinct possibility of loss, if the deficiencies are not corrected. When management has assessed that there is potential for loss, but a distinct possibility of loss is not yet recognizable, the loan remains classified as Substandard grade. Doubtful loans are loans that have insufficient sources of repayment and a high probability of loss. Loss loans are loans that are uncollectible and of such little value that they are no longer considered bankable assets. These internal risk ratings are reviewed routinely and adjusted based on changes in the borrowers’ financial status and the loans’ collectability.</span></div>
	ewbc	Number Of Days Beyond Loan Classified Nonaccrual NumberOfDaysBeyondLoanClassifiedNonaccrual	P90D
CY2019Q2	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	130000	USD
CY2018Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	133000	USD
	ewbc	Number Of Days Troubled Debt Restructurings Become Delinquent NumberOfDaysTroubledDebtRestructuringsBecomeDelinquent	P90D
CY2019Q2	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	3900000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	3900000	USD
CY2019Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	33730377000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	311322000	USD
CY2018Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	32385189000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	330625000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	301550000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	330625000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	301550000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	330625000	USD
CY2019Q2	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	81166000	USD
CY2019Q2	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	78776000	USD
CY2019Q2	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	178471000	USD
CY2018Q2	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	129864000	USD
CY2018Q2	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	178916000	USD
CY2018Q2	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	309776000	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	173394000	USD
	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	173519000	USD
	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	326285000	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	285631000	USD
	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	293203000	USD
	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	389822000	USD
CY2019Q2	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	317000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	390000	USD
CY2018Q2	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	13300000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	13400000	USD
CY2019Q2	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	15000	USD
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	930000	USD
CY2018Q2	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	2300000	USD
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	3900000	USD
	ewbc	Minimum Compliance Period To Fully Utilize Tax Credits MinimumCompliancePeriodToFullyUtilizeTaxCredits	P15Y
CY2019Q2	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	198466000	USD
CY2018Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	184873000	USD
CY2019Q2	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	83785000	USD
CY2018Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	80764000	USD
CY2019Q2	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	11506000	USD
CY2018Q2	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	8940000	USD
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	23332000	USD
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	18095000	USD
CY2019Q2	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	9657000	USD
CY2018Q2	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	6700000	USD
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	18554000	USD
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	13773000	USD
CY2019Q2	ewbc	Investmentsin Tax Creditand Other Investments Net InvestmentsinTaxCreditandOtherInvestmentsNet	210387000	USD
CY2018Q4	ewbc	Investmentsin Tax Creditand Other Investments Net InvestmentsinTaxCreditandOtherInvestmentsNet	231635000	USD
CY2019Q2	ewbc	Other Tax Credit Investments Commitment OtherTaxCreditInvestmentsCommitment	73369000	USD
CY2018Q4	ewbc	Other Tax Credit Investments Commitment OtherTaxCreditInvestmentsCommitment	80228000	USD
CY2019Q2	ewbc	Noninterest Expense Amortization Of Tax Credit Investments NoninterestExpenseAmortizationOfTaxCreditInvestments	16700000	USD
	ewbc	Noninterest Expense Amortization Of Tax Credit Investments NoninterestExpenseAmortizationOfTaxCreditInvestments	41600000	USD
CY2018Q2	ewbc	Noninterest Expense Amortization Of Tax Credit Investments NoninterestExpenseAmortizationOfTaxCreditInvestments	20500000	USD
	ewbc	Noninterest Expense Amortization Of Tax Credit Investments NoninterestExpenseAmortizationOfTaxCreditInvestments	37900000	USD
CY2019Q2	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	375000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	767000	USD
CY2018Q2	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-159000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-613000	USD
CY2018Q4	ewbc	Investmentsin Tax Creditand Other Investments Net InvestmentsinTaxCreditandOtherInvestmentsNet	231600000	USD
CY2019Q2	ewbc	Tax Credit Investments Pretax Impairment Charge TaxCreditInvestmentsPretaxImpairmentCharge	2900000	USD
CY2019Q2	ewbc	Tax Credit Investments Pretax Impairment Charge TaxCreditInvestmentsPretaxImpairmentCharge	2900000	USD
	ewbc	Tax Credit Investments Pretax Impairment Charge TaxCreditInvestmentsPretaxImpairmentCharge	9900000	USD
CY2019Q2	us-gaap	Goodwill Goodwill	465700000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	465500000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2019Q2	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0	USD
CY2017Q4	us-gaap	Goodwill Goodwill	469433000	USD
CY2018Q2	us-gaap	Goodwill Goodwill	465547000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	465547000	USD
CY2019Q2	us-gaap	Goodwill Goodwill	465697000	USD
CY2018Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	0	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	27642000	USD
CY2019Q2	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1030000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	17843000	USD
CY2019Q2	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	690000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P15Y
	us-gaap	Variable Lease Cost VariableLeaseCost	62000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	87000	USD
CY2019Q2	us-gaap	Variable Lease Cost VariableLeaseCost	32000	USD
CY2019Q2	ewbc	Lease Rightof Use Asset LeaseRightofUseAsset	117176000	USD
CY2019Q2	ewbc	Lease Liability LeaseLiability	122988000	USD
CY2019Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	8770000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	17750000	USD
CY2019Q2	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	280000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	482000	USD
CY2019Q2	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	41000	USD
CY2019Q2	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	3462000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	126689000	USD
CY2019Q2	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	7138000	USD
CY2019Q2	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	41000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	87000	USD
CY2019Q2	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	218000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	435000	USD
CY2019Q2	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	11489000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15167000	USD
CY2019Q2	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	226000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	226000	USD
CY2019Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y8M12D
CY2019Q2	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P15Y10M24D
CY2019Q2	us-gaap	Sublease Income SubleaseIncome	49000	USD
	us-gaap	Sublease Income SubleaseIncome	81000	USD
CY2019Q2	us-gaap	Lease Cost LeaseCost	9074000	USD
	us-gaap	Lease Cost LeaseCost	18300000	USD
CY2019Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	8806000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	17981000	USD
CY2019Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0319
CY2019Q2	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0299
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	17575000	USD
CY2019Q2	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	519000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	32208000	USD
CY2019Q2	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1035000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	10807000	USD
CY2019Q2	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	402000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	20614000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	9241000	USD
CY2019Q2	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1598000	USD
CY2019Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	117448000	USD
CY2019Q2	us-gaap	Finance Lease Liability FinanceLeaseLiability	5540000	USD
CY2019Q2	us-gaap	Net Investment In Lease NetInvestmentInLease	153300000	USD
CY2019Q2	us-gaap	Lessor Direct Financing Lease Renewal Term1 LessorDirectFinancingLeaseRenewalTerm1	P1Y
CY2019Q2	us-gaap	Direct Financing Lease Residual Value Of Leased Asset DirectFinancingLeaseResidualValueOfLeasedAsset	31500000	USD
CY2019Q2	us-gaap	Direct Financing Lease Lease Receivable DirectFinancingLeaseLeaseReceivable	138752000	USD
CY2019Q2	us-gaap	Direct Financing Lease Unguaranteed Residual Asset DirectFinancingLeaseUnguaranteedResidualAsset	14580000	USD
CY2019Q2	us-gaap	Direct Financing Lease Net Investment In Lease DirectFinancingLeaseNetInvestmentInLease	153332000	USD
CY2019Q2	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	1500000	USD
	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	3000000.0	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Remainder Of Fiscal Year SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedRemainderOfFiscalYear	14038000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Two Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears	27566000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Three Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears	25584000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Four Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears	18190000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Five Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears	11995000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Thereafter SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter	20342000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	117715000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Undiscounted Excess Amount SalesTypeAndDirectFinancingLeasesLeaseReceivableUndiscountedExcessAmount	11917000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable SalesTypeAndDirectFinancingLeasesLeaseReceivable	105798000	USD
CY2019Q2	us-gaap	Unused Commitments To Extend Credit UnusedCommitmentsToExtendCredit	5391182000	USD
CY2018Q4	us-gaap	Unused Commitments To Extend Credit UnusedCommitmentsToExtendCredit	5147821000	USD
CY2019Q2	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1830902000	USD
CY2018Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1796647000	USD
CY2019Q2	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1830000000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13588000	USD
CY2019Q2	ewbc	Other Sources Of Noninterest Income OtherSourcesOfNoninterestIncome	39171000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	52759000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	14641000	USD
CY2018Q2	ewbc	Other Sources Of Noninterest Income OtherSourcesOfNoninterestIncome	33627000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	48268000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	27041000	USD
	ewbc	Other Sources Of Noninterest Income OtherSourcesOfNoninterestIncome	67849000	USD
	us-gaap	Noninterest Income NoninterestIncome	94890000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	28024000	USD
	ewbc	Other Sources Of Noninterest Income OtherSourcesOfNoninterestIncome	94688000	USD
	us-gaap	Noninterest Income NoninterestIncome	122712000	USD
CY2019Q2	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	223177000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	196992000	USD
CY2019Q2	ewbc	Income Lossfrom Continuing Operationsbefore Income Taxes Change Between Currentand Prior Period Percent IncomeLossfromContinuingOperationsbeforeIncomeTaxesChangeBetweenCurrentandPriorPeriodPercent	0.13
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	418268000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	408776000	USD
	ewbc	Income Lossfrom Continuing Operationsbefore Income Taxes Change Between Currentand Prior Period Percent IncomeLossfromContinuingOperationsbeforeIncomeTaxesChangeBetweenCurrentandPriorPeriodPercent	0.02
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	72797000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24643000	USD
CY2019Q2	ewbc	Income Tax Expense Benefit Change Between Currentand Prior Period Percent IncomeTaxExpenseBenefitChangeBetweenCurrentandPriorPeriodPercent	1.95
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	103864000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	49395000	USD
	ewbc	Income Tax Expense Benefit Change Between Currentand Prior Period Percent IncomeTaxExpenseBenefitChangeBetweenCurrentandPriorPeriodPercent	1.10
CY2019Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.326
CY2018Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.125
CY2019Q2	ewbc	Effective Income Tax Rate Reconciliation Change Between Currentand Prior Period Percent EffectiveIncomeTaxRateReconciliationChangeBetweenCurrentandPriorPeriodPercent	0.20
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.248
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.121
	ewbc	Effective Income Tax Rate Reconciliation Change Between Currentand Prior Period Percent EffectiveIncomeTaxRateReconciliationChangeBetweenCurrentandPriorPeriodPercent	0.13
CY2019Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.326
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.248
CY2018Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.125
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.121
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber	0	shares
CY2019Q2	us-gaap	Share Based Compensation ShareBasedCompensation	8081000	USD
CY2018Q2	us-gaap	Share Based Compensation ShareBasedCompensation	7057000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	15525000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	13215000	USD
CY2019Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1000	USD
CY2018Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	97000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4708000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4875000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	150380000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	172349000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	314404000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	359381000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145546000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	144899000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145402000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	144782000	shares
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.46
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.16
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.48
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	150380000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	172349000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	314404000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	359381000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145546000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	144899000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145402000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	144782000	shares
CY2019Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	506000	shares
CY2018Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1192000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	614000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1264000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146052000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146091000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146016000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146046000	shares
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.03
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.18
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.15
CY2019Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	40095000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	17084000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	23011000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-19374000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-3711000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-15663000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	72652000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	24450000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	48202000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-39282000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-11605000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-27677000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
	ewbc	Number Of Business Divisions NumberOfBusinessDivisions	2	segment
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2019Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	367326000	USD
CY2019Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	19245000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	52759000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	177663000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	223177000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	150380000	USD
CY2019Q2	us-gaap	Assets Assets	42892358000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	341679000	USD
CY2018Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	15536000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	48268000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	177419000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	196992000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	172349000	USD
CY2018Q2	us-gaap	Assets Assets	38043196000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	729787000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	41824000	USD
	us-gaap	Noninterest Income NoninterestIncome	94890000	USD
	us-gaap	Noninterest Expense NoninterestExpense	364585000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	418268000	USD
	us-gaap	Net Income Loss NetIncomeLoss	314404000	USD
CY2019Q2	us-gaap	Assets Assets	42892358000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	668372000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	35754000	USD
	us-gaap	Noninterest Income NoninterestIncome	122712000	USD
	us-gaap	Noninterest Expense NoninterestExpense	346554000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	408776000	USD
	us-gaap	Net Income Loss NetIncomeLoss	359381000	USD
CY2018Q2	us-gaap	Assets Assets	38043196000	USD

Files In Submission

Name	View Source	Status
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0001069157-19-000047-index.html	Edgar Link	pending
0001069157-19-000047.txt	Edgar Link	pending
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$EWBC
EAST WEST BANCORP INC Stock $ewbc

2019 Q2 Form 10-Q Financial Statement

#000106915719000047 Filed on August 07, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EWBC EAST WEST BANCORP INC Stock $ewbc

2019 Q2 Form 10-Q Financial Statement

#000106915719000047 Filed on August 07, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EWBC
EAST WEST BANCORP INC Stock $ewbc