$EWBC
EAST WEST BANCORP INC Stock $ewbc

$ewbc Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000106915723000114 Filed on November 08, 2023

Income Statement

Concept	2023 Q4	2023 Q3
Revenue		$961.8M
YoY Change		53.09%
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	-$11.44M	$68.30M
YoY Change	-114.69%	106.54%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$391.0M
YoY Change		411.57%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$327.2M	$353.6M
YoY Change	-15.73%	-8.02%
Income Tax	$88.29M	$65.81M
% Of Pretax Income	26.98%	18.61%
Net Earnings	$239.0M	$287.7M
YoY Change	-29.04%	-2.57%
Net Earnings / Revenue		29.92%
Basic Earnings Per Share		$2.03
Diluted Earnings Per Share	$1.69	$2.02
COMMON SHARES
Basic Shares Outstanding	140.9M shares	141.5M shares
Diluted Shares Outstanding		142.1M shares

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$4.615B	$4.561B
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	$94.02M	$87.89M
YoY Change	-9.31%	-16.62%
Goodwill	$466.0M	$465.7M
YoY Change	0.06%	0.0%
Intangibles
YoY Change
Long-Term Investments	$905.0M	$902.0M
YoY Change	18.58%	24.37%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$69.61B	$68.29B
YoY Change	8.58%	9.13%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$1.917B	$1.953B
YoY Change	12.26%	10.42%
Deferred Revenue
YoY Change
Short-Term Debt	$4.500B	$4.500B
YoY Change	1400.0%	454.33%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$6.417B	$6.453B
YoY Change	275.84%	264.84%
LONG-TERM LIABILITIES
Long-Term Debt	$153.0M	$153.0M
YoY Change	0.4%	0.26%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$153.0M	$153.0M
YoY Change	0.4%	0.26%
TOTAL LIABILITIES
Total Short-Term Liabilities	$6.417B	$6.453B
Total Long-Term Liabilities	$153.0M	$153.0M
Total Liabilities	$62.66B	$61.69B
YoY Change	7.8%	8.39%
SHAREHOLDERS EQUITY
Retained Earnings	$6.465B	$6.295B
YoY Change	15.81%	18.7%
Common Stock	$169.0K	$169.0K
YoY Change	0.6%	0.6%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.951B	$6.597B
YoY Change
Total Liabilities & Shareholders Equity	$69.61B	$68.29B
YoY Change	8.58%	9.13%

Cashflow Statement

Concept	2023 Q4	2023 Q3
OPERATING ACTIVITIES
Net Income	$239.0M	$287.7M
YoY Change	-29.04%	-2.57%
Depreciation, Depletion And Amortization	-$11.44M	$68.30M
YoY Change	-114.69%	106.54%
Cash From Operating Activities	$561.7M	$381.8M
YoY Change	24.93%	-44.45%
INVESTING ACTIVITIES
Capital Expenditures	$0.00	$0.00
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$1.350B	-$1.557B
YoY Change	305.81%	466.49%
Cash From Investing Activities	-$1.350B	-$1.557B
YoY Change	305.81%	466.49%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	835.9M	-644.9M
YoY Change	-30.03%	397.63%
NET CHANGE
Cash From Operating Activities	561.7M	381.8M
Cash From Investing Activities	-1.350B	-1.557B
Cash From Financing Activities	835.9M	-644.9M
Net Change In Cash	48.00M	-1.820B
YoY Change	-96.34%	-743.63%
FREE CASH FLOW
Cash From Operating Activities	$561.7M	$381.8M
Capital Expenditures	$0.00	$0.00
Free Cash Flow	$561.7M	$381.8M
YoY Change	24.93%	-44.45%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q3	ewbc	Assets Purchased Under Agreements To Resell AssetsPurchasedUnderAgreementsToResell	785000000	usd
CY2022Q4	ewbc	Assets Purchased Under Agreements To Resell AssetsPurchasedUnderAgreementsToResell	792192000	usd
CY2023Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	0	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	300000000	usd
	ewbc	Lendingfees Lendingfees	59869000	usd
CY2023Q3	ewbc	Depositaccountfees Depositaccountfees	22622000	usd
CY2022Q3	ewbc	Depositaccountfees Depositaccountfees	23636000	usd
	ewbc	Depositaccountfees Depositaccountfees	66610000	usd
CY2023Q3	ewbc	Wealthmanagementfees Wealthmanagementfees	5877000	usd
CY2022Q3	ewbc	Wealthmanagementfees Wealthmanagementfees	8903000	usd
	ewbc	Wealthmanagementfees Wealthmanagementfees	19070000	usd
	ewbc	Wealthmanagementfees Wealthmanagementfees	21494000	usd
CY2023Q3	ewbc	Computer Software Expense ComputerSoftwareExpense	8116000	usd
CY2022Q3	ewbc	Computer Software Expense ComputerSoftwareExpense	6889000	usd
	ewbc	Computer Software Expense ComputerSoftwareExpense	22955000	usd
	ewbc	Computer Software Expense ComputerSoftwareExpense	20755000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	31885000	usd
CY2022Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	30403000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	102092000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	86243000	usd
CY2023Q3	ewbc	Noninterest Expense Amortizationof Tax Creditand Other Investments NoninterestExpenseAmortizationofTaxCreditandOtherInvestments	49694000	usd
CY2022Q3	ewbc	Noninterest Expense Amortizationof Tax Creditand Other Investments NoninterestExpenseAmortizationofTaxCreditandOtherInvestments	19874000	usd
	ewbc	Noninterest Expense Amortizationof Tax Creditand Other Investments NoninterestExpenseAmortizationofTaxCreditandOtherInvestments	115718000	usd
	ewbc	Noninterest Expense Amortizationof Tax Creditand Other Investments NoninterestExpenseAmortizationofTaxCreditandOtherInvestments	48753000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	252014000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	215973000	usd
	us-gaap	Noninterest Expense NoninterestExpense	732250000	usd
	us-gaap	Noninterest Expense NoninterestExpense	602283000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	353551000	usd
	us-gaap	Net Income Loss NetIncomeLoss	922208000	usd
	us-gaap	Net Income Loss NetIncomeLoss	791320000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-161445000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-64990000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-523593000	usd
CY2023Q3	ewbc	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Including Reclassification Of Unrealized Gains Losses Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentIncludingReclassificationOfUnrealizedGainsLossesNetOfTaxPortionAttributableToParent	0	usd
CY2022Q3	ewbc	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Including Reclassification Of Unrealized Gains Losses Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentIncludingReclassificationOfUnrealizedGainsLossesNetOfTaxPortionAttributableToParent	0	usd
	ewbc	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Including Reclassification Of Unrealized Gains Losses Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentIncludingReclassificationOfUnrealizedGainsLossesNetOfTaxPortionAttributableToParent	0	usd
CY2023Q3	ewbc	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Including Amortization Of Unrealized Gains Losses Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentIncludingAmortizationOfUnrealizedGainsLossesNetOfTaxPortionAttributableToParent	-2870000	usd
CY2022Q3	ewbc	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Including Amortization Of Unrealized Gains Losses Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentIncludingAmortizationOfUnrealizedGainsLossesNetOfTaxPortionAttributableToParent	-3256000	usd
	ewbc	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Including Amortization Of Unrealized Gains Losses Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentIncludingAmortizationOfUnrealizedGainsLossesNetOfTaxPortionAttributableToParent	-8448000	usd
	ewbc	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Including Amortization Of Unrealized Gains Losses Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentIncludingAmortizationOfUnrealizedGainsLossesNetOfTaxPortionAttributableToParent	-9317000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-27334000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-33269000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-52608000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-64372000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	3710000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-7926000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-598000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-18012000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-93445000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-199384000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-109748000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-709651000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	194293000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	95955000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	81669000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	5609482000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	295339000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-199384000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	12329000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	65813000	usd
CY2023Q3	ewbc	Lendingfees Lendingfees	20312000	usd
CY2022Q3	ewbc	Lendingfees Lendingfees	20289000	usd
	ewbc	Lendingfees Lendingfees	61799000	usd
	ewbc	Depositaccountfees Depositaccountfees	66323000	usd
CY2023Q3	ewbc	Interest Rate Contracts And Other Derivative Income Loss InterestRateContractsAndOtherDerivativeIncomeLoss	11208000	usd
CY2022Q3	ewbc	Interest Rate Contracts And Other Derivative Income Loss InterestRateContractsAndOtherDerivativeIncomeLoss	8761000	usd
	ewbc	Interest Rate Contracts And Other Derivative Income Loss InterestRateContractsAndOtherDerivativeIncomeLoss	21145000	usd
	ewbc	Interest Rate Contracts And Other Derivative Income Loss InterestRateContractsAndOtherDerivativeIncomeLoss	29695000	usd
CY2023Q3	ewbc	Foreignexchangeincome Foreignexchangeincome	12334000	usd
CY2022Q3	ewbc	Foreignexchangeincome Foreignexchangeincome	10083000	usd
	ewbc	Foreignexchangeincome Foreignexchangeincome	38245000	usd
	ewbc	Foreignexchangeincome Foreignexchangeincome	34143000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	384388000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1132531000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1023330000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	89049000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	210323000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	232010000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	287738000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	295339000	usd
	us-gaap	Net Income Loss NetIncomeLoss	922208000	usd
	us-gaap	Net Income Loss NetIncomeLoss	791320000	usd
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.03
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.52
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.59
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.02
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.08
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.49
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.55
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141485000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	140917000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141356000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141453000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142122000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142011000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142044000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142601000	shares
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	287738000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	295339000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-72691000	usd
	ewbc	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Including Reclassification Of Unrealized Gains Losses Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentIncludingReclassificationOfUnrealizedGainsLossesNetOfTaxPortionAttributableToParent	112991000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	812460000	usd
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2022Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	57092000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	5660668000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	6461697000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	287738000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-93445000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	9624000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2023Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	68722000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	6596706000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	5837218000	usd
	us-gaap	Net Income Loss NetIncomeLoss	791320000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-709651000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	32836000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.20
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	172082000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	5984612000	usd
	us-gaap	Net Income Loss NetIncomeLoss	922208000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-109748000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	32851000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	205741000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	6596706000	usd
	us-gaap	Net Income Loss NetIncomeLoss	922208000	usd
	us-gaap	Net Income Loss NetIncomeLoss	791320000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	81980000	usd
	ewbc	Accretion Amortizationof Discountand Premiums Net AccretionAmortizationofDiscountandPremiumsNet	-26336000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	29338000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6107000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	88000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	48500000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	-41000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	5968000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-10000000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	1306000	usd
	ewbc	Paymentsfor Proceedsfrom Qualified Affordable Housing Partnershipsand Other Tax Credit Investments PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments	154309000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	50000000	usd
	us-gaap	Proceeds From Sale Of Finance Receivables ProceedsFromSaleOfFinanceReceivables	453315000	usd
	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	599660000	usd
	us-gaap	Payments For Proceeds From Other Loans And Leases PaymentsForProceedsFromOtherLoansAndLeases	5675012000	usd
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	16614000	usd
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	13557000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	105258000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-920000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2897622000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4250330000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-840367000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	623025000	usd
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	4500017000	usd
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	200006000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	6000000000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	4600200000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	6000000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	4525200000	usd
	ewbc	Proceeds From Repurchase Agreements ProceedsFromRepurchaseAgreements	0	usd
	ewbc	Proceeds From Repurchase Agreements ProceedsFromRepurchaseAgreements	311785000	usd
	ewbc	Repayments Of Repurchase Agreement RepaymentsOfRepurchaseAgreement	300000000	usd
	ewbc	Repayments Of Repurchase Agreement RepaymentsOfRepurchaseAgreement	0	usd
	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	3872000	usd
	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	usd
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	637000	usd
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	710000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	99990000	usd
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	206848000	usd
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	171991000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3126642000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	919586000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-12848000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-35257000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1079394000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1749582000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3481784000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3912935000	usd
	us-gaap	Interest Paid Net InterestPaidNet	852315000	usd
	us-gaap	Interest Paid Net InterestPaidNet	107146000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	284347000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	233082000	usd
	us-gaap	Transfer To Investments TransferToInvestments	0	usd
	us-gaap	Transfer To Investments TransferToInvestments	3010003000	usd
CY2023Q3	ewbc	Number Of Wholly Owned Statutory Business Trusts NumberOfWhollyOwnedStatutoryBusinessTrusts	6	trust
CY2023Q3	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	785000000	usd
CY2022Q4	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	760000000	usd
CY2023Q3	srt	Securities Purchased Under Agreements To Resell Average Yield SecuritiesPurchasedUnderAgreementsToResellAverageYield	0.0273
CY2022Q3	srt	Securities Purchased Under Agreements To Resell Average Yield SecuritiesPurchasedUnderAgreementsToResellAverageYield	0.0241
	srt	Securities Purchased Under Agreements To Resell Average Yield SecuritiesPurchasedUnderAgreementsToResellAverageYield	0.0255
	srt	Securities Purchased Under Agreements To Resell Average Yield SecuritiesPurchasedUnderAgreementsToResellAverageYield	0.0196
CY2022Q4	ewbc	Loans Purchased Under Agreements To Resell LoansPurchasedUnderAgreementsToResell	32200000	usd
CY2023Q3	ewbc	Loans Purchased Under Agreements To Resell LoansPurchasedUnderAgreementsToResell	0	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	300000000	usd
CY2023Q1	ewbc	Extinguishment Of Securities Sold Under Agreements To Repurchase Amount ExtinguishmentOfSecuritiesSoldUnderAgreementsToRepurchaseAmount	300000000	usd
	ewbc	Securities Sold Under Agreements To Repurchase Charges Related To Extinguishment SecuritiesSoldUnderAgreementsToRepurchaseChargesRelatedToExtinguishment	3900000	usd
	ewbc	Securities Sold Under Agreements To Repurchase Charges Related To Extinguishment SecuritiesSoldUnderAgreementsToRepurchaseChargesRelatedToExtinguishment	0	usd
CY2023Q3	srt	Securities Sold Under Agreements To Repurchase Average Rate Paid SecuritiesSoldUnderAgreementsToRepurchaseAverageRatePaid	0.0551
CY2022Q3	srt	Securities Sold Under Agreements To Repurchase Average Rate Paid SecuritiesSoldUnderAgreementsToRepurchaseAverageRatePaid	0.0281
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	6976331000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	6879225000	usd
CY2023Q3	ewbc	Debt Securities Available For Sale And Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	42600000	usd
CY2022Q4	ewbc	Debt Securities Available For Sale And Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	41800000	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1306000	usd
CY2023Q3	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	0	usd
CY2022Q3	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	0	usd
	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	10000000	usd
	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	0	usd
CY2023Q3	ewbc	Tax Expenseon Saleof Availablefor Sale Debt Investment Securities TaxExpenseonSaleofAvailableforSaleDebtInvestmentSecurities	0	usd
CY2022Q3	ewbc	Tax Expenseon Saleof Availablefor Sale Debt Investment Securities TaxExpenseonSaleofAvailableforSaleDebtInvestmentSecurities	0	usd
	ewbc	Tax Expenseon Saleof Availablefor Sale Debt Investment Securities TaxExpenseonSaleofAvailableforSaleDebtInvestmentSecurities	-2956000	usd
	ewbc	Tax Expenseon Saleof Availablefor Sale Debt Investment Securities TaxExpenseonSaleofAvailableforSaleDebtInvestmentSecurities	386000	usd
CY2023Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	63877000	usd
CY2022Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	46172000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	189065000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	125626000	usd
CY2023Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	5901000	usd
CY2022Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	4920000	usd
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	15614000	usd
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	14309000	usd
CY2023Q3	us-gaap	Interest Income Debt Securities Operating InterestIncomeDebtSecuritiesOperating	69778000	usd
CY2022Q3	us-gaap	Interest Income Debt Securities Operating InterestIncomeDebtSecuritiesOperating	51092000	usd
	us-gaap	Interest Income Debt Securities Operating InterestIncomeDebtSecuritiesOperating	204679000	usd
	us-gaap	Interest Income Debt Securities Operating InterestIncomeDebtSecuritiesOperating	139935000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	583428000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	1048858000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	986581000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	4357464000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	6976331000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	581600000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	964501000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	874214000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	3619522000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	6039837000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Maturity Within One Year Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityWithinOneYearWeightedAverageYield	0.0532
CY2023Q3	us-gaap	Debt Securities Available For Sale Maturity After One Through Five Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityAfterOneThroughFiveYearsWeightedAverageYield	0.0186
CY2023Q3	us-gaap	Debt Securities Available For Sale Maturity After Five Through Ten Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityAfterFiveThroughTenYearsWeightedAverageYield	0.0427
CY2023Q3	us-gaap	Debt Securities Available For Sale Maturity After10 Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityAfter10YearsWeightedAverageYield	0.0340
CY2023Q3	us-gaap	Debt Securities Available For Sale Weighted Average Yield DebtSecuritiesAvailableForSaleWeightedAverageYield	0.0345
CY2023Q3	us-gaap	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss Maturity Allocated And Single Maturity Date Year One DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateYearOne	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss Maturity Allocated And Single Maturity Date After Year One Through Five DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughFive	528169000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss Maturity Allocated And Single Maturity Date After Year5 Through10 DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear5Through10	423862000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss Maturity Allocated And Single Maturity Date After Year10 DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear10	2012204000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss Maturity Allocated And Single Maturity Date DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDate	2964235000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	470618000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	341533000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	1495897000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	2308048000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Maturity Within One Year Weighted Average Yield DebtSecuritiesHeldToMaturityMaturityWithinOneYearWeightedAverageYield	0
CY2023Q3	us-gaap	Debt Securities Held To Maturity Maturity After One Through Five Years Weighted Average Yield DebtSecuritiesHeldToMaturityMaturityAfterOneThroughFiveYearsWeightedAverageYield	0.0105
CY2023Q3	us-gaap	Debt Securities Held To Maturity Maturity After Five Through Ten Years Weighted Average Yield DebtSecuritiesHeldToMaturityMaturityAfterFiveThroughTenYearsWeightedAverageYield	0.0184
CY2023Q3	us-gaap	Debt Securities Held To Maturity Maturity After10 Years Weighted Average Yield DebtSecuritiesHeldToMaturityMaturityAfter10YearsWeightedAverageYield	0.0178
CY2023Q3	us-gaap	Debt Securities Held To Maturity Weighted Average Yield DebtSecuritiesHeldToMaturityWeightedAverageYield	0.0166
CY2023Q3	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	62272000	usd
CY2022Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	61374000	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	17250000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	17250000	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	79522000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	78624000	usd
CY2023Q3	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	862316000	usd
CY2023Q3	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	948387000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	755328000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	887264000	usd
CY2023Q3	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	260648000	usd
CY2023Q3	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	260648000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	242745000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	242745000	usd
CY2023Q3	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	269683000	usd
CY2023Q3	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	2225000	usd
CY2022Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	372038000	usd
CY2022Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	usd
CY2023Q3	us-gaap	Derivative Assets DerivativeAssets	331985000	usd
CY2023Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	685514000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	140545000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	644519000	usd
CY2023Q3	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	948387000	usd
CY2023Q3	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	260648000	usd
CY2023Q3	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	2225000	usd
CY2023Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	685514000	usd
CY2023Q3	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	0	usd
CY2023Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	685514000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	755328000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	242745000	usd
CY2022Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	372038000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	140545000	usd
CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	60567000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	79978000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	887264000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	242745000	usd
CY2022Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	644519000	usd
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	38438000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	606081000	usd
CY2023Q3	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	1800000	usd
CY2022Q4	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	2100000	usd
CY2023Q3	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	16200000	usd
CY2022Q4	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	566000	usd
CY2023Q3	ewbc	Derivative Cash Collateral Received Including Amount Offsetby Fair Value Assetsand Excess Cash Amount DerivativeCashCollateralReceivedIncludingAmountOffsetbyFairValueAssetsandExcessCashAmount	-275700000	usd
CY2022Q4	ewbc	Derivative Cash Collateral Received Including Amount Offsetby Fair Value Assetsand Excess Cash Amount DerivativeCashCollateralReceivedIncludingAmountOffsetbyFairValueAssetsandExcessCashAmount	-384900000	usd
CY2023Q3	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	269700000	usd
CY2022Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	372000000	usd
CY2023Q3	ewbc	Derivative Cash Collateral Posted Against Derivative Liabilities Including Amount Offsetthe Derivative Fair Value Liabilitiesand Excess Cash Amount DerivativeCashCollateralPostedAgainstDerivativeLiabilitiesIncludingAmountOffsettheDerivativeFairValueLiabilitiesandExcessCashAmount	3100000	usd
CY2022Q4	ewbc	Derivative Cash Collateral Posted Against Derivative Liabilities Including Amount Offsetthe Derivative Fair Value Liabilitiesand Excess Cash Amount DerivativeCashCollateralPostedAgainstDerivativeLiabilitiesIncludingAmountOffsettheDerivativeFairValueLiabilitiesandExcessCashAmount	490000	usd
CY2023Q3	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	2200000	usd
CY2022Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	50907184000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	48202430000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	655523000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	595645000	usd
CY2023Q3	us-gaap	Notes Receivable Net NotesReceivableNet	50251661000	usd
CY2022Q4	us-gaap	Notes Receivable Net NotesReceivableNet	47606785000	usd
CY2023Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-72000000	usd
CY2022Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-70400000	usd
CY2023Q3	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	249300000	usd
CY2022Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	208400000	usd
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Credit Quality Indicators</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">All loans are subject to the Company’s credit review and monitoring process. For the commercial loan portfolio, loans are risk rated based on an analysis of the borrower’s current payment performance or delinquency, repayment sources, financial and liquidity factors, including industry and geographic considerations. For the consumer loan portfolio, payment performance or delinquency is typically the driving indicator for risk ratings.</span></div><div><span><br/></span></div><div style="margin-bottom:6pt;text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company utilizes internal credit risk ratings to assign each individual loan a risk rating of 1 through 10:</span></div><div style="padding-left:72pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt">Pass</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> — loans risk rated 1 through 5 are assigned an internal risk rating category of “Pass.” Loans risk rated 1 are typically loans fully secured by cash. Pass loans have sufficient sources of repayment to repay the loan in full, in accordance with all terms and conditions.</span></div><div style="padding-left:72pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt">Special mention</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> — loans assigned a risk rating of 6 have potential weaknesses that warrant closer attention by management; these are assigned an internal risk rating category of “Special Mention.”</span></div><div style="padding-left:72pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt">Substandard</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> — loans assigned a risk rating of 7 or 8 have well-defined weaknesses that may jeopardize the full and timely repayment of the loan; these are assigned an internal risk rating category of “Substandard.”</span></div><div style="padding-left:72pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt">Doubtful</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> — loans assigned a risk rating of 9 have insufficient sources of repayment and a high probability of loss; these are assigned an internal risk rating category of “Doubtful.”</span></div><div style="padding-left:72pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt">Loss</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> — loans assigned a risk rating of 10 are uncollectible and of such little value that they are no longer considered bankable assets; these are assigned an internal risk rating category of “Loss.”</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Loan exposures categorized as criticized consist of special mention, substandard, doubtful and loss categories. The Company reviews the internal risk ratings of its loan portfolio on a regular basis, and adjusts the ratings based on changes in the borrowers’ financial status and the collectability of the loans.</span></div>
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	7090395000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	11425642000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	7265279000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	4206435000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	3487616000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	6094731000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	11129338000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	207748000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	50907184000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	12464897000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	8204714000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	4810435000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	3871740000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	2936646000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	4261980000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	11460495000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	191523000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	48202430000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	103700000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Modified Past12 Months FinancingReceivableExcludingAccruedInterestModifiedPast12Months	50907184000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	99526000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Modified Past12 Months FinancingReceivableExcludingAccruedInterestModifiedPast12Months	48202430000	usd
CY2023Q3	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	59876000	usd
CY2022Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	44585000	usd
CY2023Q3	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	0	usd
CY2022Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	270000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	31475000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	122678000	usd
CY2023Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
CY2023Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	122678000	usd
CY2023Q3	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	5800000	usd
CY2022Q3	ewbc	Financing Receivable Modification Number Of Contracts2 FinancingReceivableModificationNumberOfContracts2	2	loan
CY2022Q3	ewbc	Financing Receivable Modifications Pre Modification Recorded Investment FinancingReceivableModificationsPreModificationRecordedInvestment	561000	usd
CY2022Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	565000	usd
CY2022Q3	ewbc	Financing Receivable Modifications Financial Impact Charges FinancingReceivableModificationsFinancialImpactCharges	100000	usd
	ewbc	Financing Receivable Modification Number Of Contracts2 FinancingReceivableModificationNumberOfContracts2	5	loan
	ewbc	Financing Receivable Modifications Pre Modification Recorded Investment FinancingReceivableModificationsPreModificationRecordedInvestment	30695000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	17871000	usd
	ewbc	Financing Receivable Modifications Financial Impact Charges FinancingReceivableModificationsFinancialImpactCharges	16731000	usd
CY2022Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	565000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	17871000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	16200000	usd
CY2023Q3	ewbc	Reasonable And Supportable Forecase Period Life Time Loss Rate Period ReasonableAndSupportableForecasePeriodLifeTimeLossRatePeriod	8	q
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	635400000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	38136000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	21007000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2861000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	18146000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Foreign Currency Translation FinancingReceivableAllowanceForCreditLossForeignCurrencyTranslation	133000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	655523000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	563270000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	27274000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	13905000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	7264000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	6641000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Foreign Currency Translation FinancingReceivableAllowanceForCreditLossForeignCurrencyTranslation	-1386000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	582517000	usd
CY2022Q4	ewbc	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest Before Impact Of Adoption FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestBeforeImpactOfAdoption	595645000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	601673000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	80681000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	32799000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	6507000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	26292000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Foreign Currency Translation FinancingReceivableAllowanceForCreditLossForeignCurrencyTranslation	-539000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	655523000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	541579000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	51995000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	26684000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	18363000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	8321000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Foreign Currency Translation FinancingReceivableAllowanceForCreditLossForeignCurrencyTranslation	-2736000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	582517000	usd
CY2023Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	42000000	usd
CY2022Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	27000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	88000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	48500000	usd
CY2023Q3	ewbc	Financing Receivable And Off Balance Sheet Credit Loss Allowance FinancingReceivableAndOffBalanceSheetCreditLossAllowance	689100000	usd
	ewbc	Financing Receivable And Off Balance Sheet Credit Loss Allowance Period Increase Decrease FinancingReceivableAndOffBalanceSheetCreditLossAllowancePeriodIncreaseDecrease	67200000	usd
CY2022Q4	ewbc	Financing Receivable And Off Balance Sheet Credit Loss Allowance FinancingReceivableAndOffBalanceSheetCreditLossAllowance	621900000	usd
CY2023Q3	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	227189000	usd
CY2023Q3	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	228868000	usd
CY2023Q3	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	160359000	usd
CY2022Q3	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	112363000	usd
CY2022Q3	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	127165000	usd
CY2022Q3	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	57662000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	507215000	usd
	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	532289000	usd
	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	432430000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	463769000	usd
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	631000	usd
	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	446753000	usd
	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	599422000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	3600000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	4200000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	8700000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	8900000	usd
	ewbc	Minimum Compliance Period To Fully Utilize Tax Credits MinimumCompliancePeriodToFullyUtilizeTaxCredits	P15Y
CY2023Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	412004000	usd
CY2023Q3	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	252552000	usd
CY2022Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	413253000	usd
CY2022Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	266654000	usd
CY2023Q3	ewbc	Investments In Tax Credit And Other Investments Net InvestmentsInTaxCreditAndOtherInvestmentsNet	489555000	usd
CY2023Q3	ewbc	Other Tax Credit Investments Commitment OtherTaxCreditInvestmentsCommitment	345072000	usd
CY2022Q4	ewbc	Investments In Tax Credit And Other Investments Net InvestmentsInTaxCreditAndOtherInvestmentsNet	350003000	usd
CY2022Q4	ewbc	Other Tax Credit Investments Commitment OtherTaxCreditInvestmentsCommitment	185797000	usd
CY2023Q3	ewbc	Investments In Qualified Affordable Housing Partnerships Tax Credit And Other Investments Assets Total InvestmentsInQualifiedAffordableHousingPartnershipsTaxCreditAndOtherInvestmentsAssetsTotal	901559000	usd
CY2023Q3	ewbc	Investments In Qualified Affordable Housing Partnerships Tax Credit And Other Investments Liabilities Unfunded Commitments Total InvestmentsInQualifiedAffordableHousingPartnershipsTaxCreditAndOtherInvestmentsLiabilitiesUnfundedCommitmentsTotal	597624000	usd
CY2022Q4	ewbc	Investments In Qualified Affordable Housing Partnerships Tax Credit And Other Investments Assets Total InvestmentsInQualifiedAffordableHousingPartnershipsTaxCreditAndOtherInvestmentsAssetsTotal	763256000	usd
CY2022Q4	ewbc	Investments In Qualified Affordable Housing Partnerships Tax Credit And Other Investments Liabilities Unfunded Commitments Total InvestmentsInQualifiedAffordableHousingPartnershipsTaxCreditAndOtherInvestmentsLiabilitiesUnfundedCommitmentsTotal	452451000	usd
CY2023Q3	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	15660000	usd
CY2022Q3	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	13180000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	47058000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	38764000	usd
CY2023Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	11587000	usd
CY2022Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	10431000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	34759000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	30498000	usd
CY2023Q3	ewbc	Noninterest Expense Amortizationof Tax Creditand Other Investments NoninterestExpenseAmortizationofTaxCreditandOtherInvestments	49694000	usd
CY2022Q3	ewbc	Noninterest Expense Amortizationof Tax Creditand Other Investments NoninterestExpenseAmortizationofTaxCreditandOtherInvestments	19874000	usd
	ewbc	Noninterest Expense Amortizationof Tax Creditand Other Investments NoninterestExpenseAmortizationofTaxCreditandOtherInvestments	115718000	usd
	ewbc	Noninterest Expense Amortizationof Tax Creditand Other Investments NoninterestExpenseAmortizationofTaxCreditandOtherInvestments	48753000	usd
CY2023Q3	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-674000	usd
CY2022Q3	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-1014000	usd
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-682000	usd
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-2958000	usd
CY2023Q3	us-gaap	Goodwill Goodwill	465700000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	465700000	usd
CY2023Q3	us-gaap	Short Term Debt Percentage Bearing Fixed Interest Rate ShortTermDebtPercentageBearingFixedInterestRate	0.0437
CY2023Q3	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	4500000000	usd
CY2023Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2530000000	usd
CY2022Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2290000000	usd
CY2023Q3	ewbc	Allowancefor Unfunded Credit Commitments AllowanceforUnfundedCreditCommitments	33600000	usd
CY2022Q4	ewbc	Allowancefor Unfunded Credit Commitments AllowanceforUnfundedCreditCommitments	26200000	usd
CY2023Q3	us-gaap	Share Based Compensation ShareBasedCompensation	9495000	usd
CY2022Q3	us-gaap	Share Based Compensation ShareBasedCompensation	12329000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	29934000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	29338000	usd
CY2023Q3	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	-18000	usd
CY2022Q3	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1000	usd
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	8797000	usd
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5269000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-287623000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	287738000	usd
CY2022Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	295339000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	922208000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	791320000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141485000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	140917000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141356000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141453000	shares
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.03
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.52
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.59
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	287738000	usd
CY2022Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	295339000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	922208000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	791320000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141485000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	140917000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141356000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141453000	shares
CY2023Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	637000	shares
CY2022Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1094000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	688000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1148000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142122000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142011000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142044000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142601000	shares
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.02
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.08
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.49
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.55
CY2023Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-134036000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-40591000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-93445000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-278005000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-78621000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-199384000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-709651000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-154395000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-44647000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-109748000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-997274000	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
	ewbc	Numberof Core Segment NumberofCoreSegment	2	segment
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	570813000	usd
CY2023Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	42000000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	76752000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	252014000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	353551000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	287738000	usd
CY2023Q3	us-gaap	Assets Assets	68289458000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	551809000	usd
CY2022Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	27000000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	75552000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	215973000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	384388000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	295339000	usd
CY2022Q3	us-gaap	Assets Assets	62576061000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1737420000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	88000000	usd
	us-gaap	Noninterest Income NoninterestIncome	215361000	usd
	us-gaap	Noninterest Expense NoninterestExpense	732250000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1132531000	usd
	us-gaap	Net Income Loss NetIncomeLoss	922208000	usd
CY2023Q3	us-gaap	Assets Assets	68289458000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1440374000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	48500000	usd
	us-gaap	Noninterest Income NoninterestIncome	233739000	usd
	us-gaap	Noninterest Expense NoninterestExpense	602283000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1023330000	usd
	us-gaap	Net Income Loss NetIncomeLoss	791320000	usd
CY2022Q3	us-gaap	Assets Assets	62576061000	usd
CY2023Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
FilingSummary.xml	Edgar Link	unprocessable
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0001069157-23-000114-index.html	Edgar Link	pending
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ewbc-20230930.htm	Edgar Link	pending
ewbc-20230930.xsd	Edgar Link	pending
ewbc-20230930_g1.jpg	Edgar Link	pending
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ewbc31110q9302023.htm	Edgar Link	pending
ewbc31210q9302023.htm	Edgar Link	pending
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ewbc32210q9302023.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
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report.css	Edgar Link	pending
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ewbc-20230930_cal.xml	Edgar Link	unprocessable

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$EWBC
EAST WEST BANCORP INC Stock $ewbc

2023 Q4 Form 10-Q Financial Statement

#000106915723000114 Filed on November 08, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EWBC EAST WEST BANCORP INC Stock $ewbc

2023 Q4 Form 10-Q Financial Statement

#000106915723000114 Filed on November 08, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EWBC
EAST WEST BANCORP INC Stock $ewbc