$WAFD
WAFD INC Stock $wafd

$wafd Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000093652821000122 Filed on November 19, 2021

Income Statement

Concept	2021	2020 Q3	2020
Revenue	$591.6M	$147.1M	$621.3M
YoY Change	-4.77%	-13.17%	-7.48%
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	$33.90M	$13.60M	$39.90M
YoY Change	-15.04%	29.52%	28.3%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$86.50M	$32.28M	$151.8M
YoY Change	-43.0%	-34.47%	-20.3%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$233.1M	$42.34M	$219.2M
YoY Change	6.37%	-35.2%	-16.59%
Income Tax	$49.52M	$7.993M	$45.75M
% Of Pretax Income	21.24%	18.88%	20.87%
Net Earnings	$183.6M	$34.34M	$173.4M
YoY Change	5.87%	-34.41%	-17.51%
Net Earnings / Revenue	31.04%	23.34%	27.92%
Basic Earnings Per Share	$2.39	$0.45	$2.26
Diluted Earnings Per Share	$2.39	$0.45	$2.26
COMMON SHARES
Basic Shares Outstanding	72.53M shares	75.71M shares	76.72M shares
Diluted Shares Outstanding	72.57M shares		76.73M shares

Balance Sheet

Concept	2021	2020 Q3	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents		$1.703B
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	$283.0M	$252.8M	$284.0M
YoY Change	-0.35%	-7.74%	3.65%
Goodwill		$302.7M
YoY Change		0.44%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$19.65B	$18.79B	$18.79B
YoY Change	4.56%	14.08%	14.08%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$215.0M	$251.0M	$251.0M
YoY Change	-14.34%	136.79%	136.79%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$215.0M	$251.0M	$251.0M
YoY Change	-14.34%	126.13%	126.13%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$47.00M	$49.00M	$49.00M
YoY Change	-4.08%	-45.56%	-45.56%
Total Long-Term Liabilities	$47.00M	$49.00M	$49.00M
YoY Change	-4.08%	-45.56%	-45.56%
TOTAL LIABILITIES
Total Short-Term Liabilities	$215.0M	$251.0M	$251.0M
Total Long-Term Liabilities	$47.00M	$49.00M	$49.00M
Total Liabilities	$17.53B	$16.78B	$16.78B
YoY Change	4.44%	16.19%	16.19%
SHAREHOLDERS EQUITY
Retained Earnings		$1.421B
YoY Change		6.36%
Common Stock		$1.815B
YoY Change		0.37%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$1.238B
YoY Change		9.96%
Treasury Stock Shares		60.04M shares
Shareholders Equity	$2.126B	$2.014B	$2.014B
YoY Change
Total Liabilities & Shareholders Equity	$19.65B	$18.79B	$18.79B
YoY Change	4.56%	14.08%	14.08%

Cashflow Statement

Concept	2021	2020 Q3	2020
OPERATING ACTIVITIES
Net Income	$183.6M	$34.34M	$173.4M
YoY Change	5.87%	-34.41%	-17.51%
Depreciation, Depletion And Amortization	$33.90M	$13.60M	$39.90M
YoY Change	-15.04%	29.52%	28.3%
Cash From Operating Activities	$314.5M	$54.90M	$166.6M
YoY Change	88.75%	-16.06%	-28.82%
INVESTING ACTIVITIES
Capital Expenditures	$29.47M	-$9.300M	$31.94M
YoY Change	-7.72%	97.87%	-10.11%
Acquisitions	$1.500M		$2.810M
YoY Change	-46.62%
Other Investing Activities	-$550.3M	-$133.4M	-$889.0M
YoY Change	-38.1%	-191.56%	130.43%
Cash From Investing Activities	-$579.7M	-$142.7M	-$921.0M
YoY Change	-37.05%	-201.28%	118.57%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$348.7M		$112.1M
YoY Change	210.93%		-9.46%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$653.1M	572.5M	$2.038B
YoY Change	-67.96%	-843.51%	503.33%
NET CHANGE
Cash From Operating Activities	$314.5M	54.90M	$166.6M
Cash From Investing Activities	-$579.7M	-142.7M	-$921.0M
Cash From Financing Activities	$653.1M	572.5M	$2.038B
Net Change In Cash	$387.8M	484.7M	$1.284B
YoY Change	-69.79%	274.86%	752.99%
FREE CASH FLOW
Cash From Operating Activities	$314.5M	$54.90M	$166.6M
Capital Expenditures	$29.47M	-$9.300M	$31.94M
Free Cash Flow	$285.0M	$64.20M	$134.7M
YoY Change	111.63%	-8.42%	-32.17%

Facts In Submission

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CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	WA
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	91-1661606
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CY2020	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	52902000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	38955000	USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	41133000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	47541000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	46199000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	332459000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	315558000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	283063000	USD
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	427000	USD
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	26000	USD
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	810000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	233138000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	219186000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	262775000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.26
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	49523000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45748000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	52519000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	183615000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	173438000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	210256000	USD
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	10034000	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	173581000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	173581000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	173438000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	173438000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	210256000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	210256000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.39
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.61
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.39
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.26
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.61
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.91
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.87
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.79
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72529188	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76721969	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80471316	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72565920	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	76731464	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	80495163	shares
CY2021	us-gaap	Net Income Loss NetIncomeLoss	183615000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	173438000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	210256000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	2020000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	6220000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	8917000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	6762000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	20528000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	30278000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	3000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-3456000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-2000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-11000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	11572000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	7000	USD
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	6773000	USD
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	8956000	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	30271000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	17003000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-2204000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-6854000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	56924000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-7295000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-23273000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-3245000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	10865000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	46059000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-7295000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-23273000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	52832000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1661000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6998000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	236447000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	175099000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	217254000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	1996908000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	210256000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6998000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.79
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	63318000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	740000	USD
CY2019	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	5265000	USD
CY2019	wfsl	Adjustmentsto Additional Paidin Capital Warrants Exercised AdjustmentstoAdditionalPaidinCapitalWarrantsExercised	0	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	123854000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	2032995000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	173438000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1661000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.87
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	66496000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	144000	USD
CY2020	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	6469000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	112133000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	2014133000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	183615000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	52832000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	293325000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.91
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	65876000	USD
CY2021	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	33.45
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	10034000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	339000	USD
CY2021	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	6381000	USD
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	348651000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	2126064000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	183615000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	173438000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	210256000	USD
CY2021	wfsl	Amortization Accretion Of Fees Discounts Premiums And Intangible Assets Net AmortizationAccretionOfFeesDiscountsPremiumsAndIntangibleAssetsNet	33914000	USD
CY2020	wfsl	Amortization Accretion Of Fees Discounts Premiums And Intangible Assets Net AmortizationAccretionOfFeesDiscountsPremiumsAndIntangibleAssetsNet	39912000	USD
CY2019	wfsl	Amortization Accretion Of Fees Discounts Premiums And Intangible Assets Net AmortizationAccretionOfFeesDiscountsPremiumsAndIntangibleAssetsNet	31058000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	6381000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	6469000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	5265000	USD
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	500000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	21750000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1650000	USD
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	14000	USD
CY2020	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	15028000	USD
CY2019	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-9000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-13788000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-13809000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2021	wfsl	Gain On Termination Of Long Term Borrowing Hedge GainOnTerminationOfLongTermBorrowingHedge	14110000	USD
CY2020	wfsl	Gain On Termination Of Long Term Borrowing Hedge GainOnTerminationOfLongTermBorrowingHedge	0	USD
CY2019	wfsl	Gain On Termination Of Long Term Borrowing Hedge GainOnTerminationOfLongTermBorrowingHedge	0	USD
CY2021	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	944000	USD
CY2020	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	6431000	USD
CY2019	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0	USD
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	593000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	31990000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	12484000	USD
CY2021	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-3163000	USD
CY2020	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	4942000	USD
CY2019	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1562000	USD
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1831000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	5708000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	234054000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1804000	USD
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5514000	USD
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5673000	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5822000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-155599000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	146893000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	17416000	USD
CY2021	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-15781000	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	890000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3043000	USD
CY2021	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-49269000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	114135000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	21553000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	314454000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	166600000	USD
CY2021	wfsl	Loans Originated Net Of Principal Collections LoansOriginatedNetOfPrincipalCollections	-556274000	USD
CY2020	wfsl	Loans Originated Net Of Principal Collections LoansOriginatedNetOfPrincipalCollections	-902481000	USD
CY2019	wfsl	Loans Originated Net Of Principal Collections LoansOriginatedNetOfPrincipalCollections	-452334000	USD
CY2021	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	488147000	USD
CY2020	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	15456000	USD
CY2019	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	0	USD
CY2021	wfsl	Payments To Acquire Federal Home Loan Bank And Federal Reserve Bank Stock PaymentsToAcquireFederalHomeLoanBankAndFederalReserveBankStock	296073000	USD
CY2020	wfsl	Payments To Acquire Federal Home Loan Bank And Federal Reserve Bank Stock PaymentsToAcquireFederalHomeLoanBankAndFederalReserveBankStock	435200000	USD
CY2019	wfsl	Payments To Acquire Federal Home Loan Bank And Federal Reserve Bank Stock PaymentsToAcquireFederalHomeLoanBankAndFederalReserveBankStock	532600000	USD
CY2021	wfsl	Proceeds From Sale Of Federal Home Loan Bank And Federal Reserve Bank Stock ProceedsFromSaleOfFederalHomeLoanBankAndFederalReserveBankStock	335200000	USD
CY2020	wfsl	Proceeds From Sale Of Federal Home Loan Bank And Federal Reserve Bank Stock ProceedsFromSaleOfFederalHomeLoanBankAndFederalReserveBankStock	417200000	USD
CY2019	wfsl	Proceeds From Sale Of Federal Home Loan Bank And Federal Reserve Bank Stock ProceedsFromSaleOfFederalHomeLoanBankAndFederalReserveBankStock	535800000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	530227000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1064815000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	358709000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	646532000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	493402000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	224118000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1499000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	204351000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	491000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	332001000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	356532000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	178147000	USD
CY2021	wfsl	Covered Real Estate Owned Purchased CoveredRealEstateOwnedPurchased	3340000	USD
CY2020	wfsl	Covered Real Estate Owned Purchased CoveredRealEstateOwnedPurchased	5022000	USD
CY2019	wfsl	Covered Real Estate Owned Purchased CoveredRealEstateOwnedPurchased	8659000	USD
CY2021	wfsl	Payments To Acquire Equity Securities PaymentsToAcquireEquitySecurities	0	USD
CY2020	wfsl	Payments To Acquire Equity Securities PaymentsToAcquireEquitySecurities	0	USD
CY2019	wfsl	Payments To Acquire Equity Securities PaymentsToAcquireEquitySecurities	5000000	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1500000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2810000	USD
CY2021	us-gaap	Repayments Of Debt RepaymentsOfDebt	8393788000	USD
CY2020	us-gaap	Repayments Of Debt RepaymentsOfDebt	10443809000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3376000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	55213000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	15585000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	29472000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	31937000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	35530000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-579745000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-920979000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-421373000	USD
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1762488000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1788860000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	603846000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	7400000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	10880000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	13315000000	USD
CY2019	us-gaap	Repayments Of Debt RepaymentsOfDebt	13395000000	USD
CY2021	wfsl	Proceeds From Termination Of Hedge Financing Activities ProceedsFromTerminationOfHedgeFinancingActivities	14110000	USD
CY2020	wfsl	Proceeds From Termination Of Hedge Financing Activities ProceedsFromTerminationOfHedgeFinancingActivities	0	USD
CY2019	wfsl	Proceeds From Termination Of Hedge Financing Activities ProceedsFromTerminationOfHedgeFinancingActivities	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	339000	USD
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	144000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	740000	USD
CY2021	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	293325000	USD
CY2020	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	65876000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	66496000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	63318000	USD
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	6378000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	348651000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	112133000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	123854000	USD
CY2021	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	-2446000	USD
CY2020	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	-8368000	USD
CY2019	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	413000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	653123000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2038198000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	337827000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	387832000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1283819000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	150508000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1702977000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	419158000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	268650000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2090809000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1702977000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	419158000	USD
CY2021	wfsl	Non Covered Real Estate Acquired Through Foreclosure NonCoveredRealEstateAcquiredThroughForeclosure	221000	USD
CY2020	wfsl	Non Covered Real Estate Acquired Through Foreclosure NonCoveredRealEstateAcquiredThroughForeclosure	1765000	USD
CY2019	wfsl	Non Covered Real Estate Acquired Through Foreclosure NonCoveredRealEstateAcquiredThroughForeclosure	1839000	USD
CY2021	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	0	USD
CY2020	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	359000	USD
CY2019	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	205000	USD
CY2021	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2020	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2019	us-gaap	Stock Issued1 StockIssued1	1082000	USD
CY2021Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	3656000	USD
CY2020Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	0	USD
CY2019Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent		USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	71845000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	146675000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	35640000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	33545000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	194277000	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	47854000	USD
CY2021Q3	wfsl	Number Of Offices NumberOfOffices	219	branch
CY2021	us-gaap	Fiscal Period FiscalPeriod	The Company's fiscal year end is September 30. All references to 2021, 2020 and 2019 represent balances as of September 30, 2021, September 30, 2020, and September 30, 2019, or activity for the fiscal years then ended.
CY2021Q1	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.04875
CY2021	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	293325000	USD
CY2021Q3	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	1500000	USD
CY2020Q3	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	97600000	USD
CY2021	wfsl	Loan Modification Basis Point Reduction Minimum LoanModificationBasisPointReductionMinimum	0.0100
CY2021	wfsl	Financing Receivable Days Past Grace Period To Initiate Contact To Cure Deficiency FinancingReceivableDaysPastGracePeriodToInitiateContactToCureDeficiency	P30D
CY2021	wfsl	Financing Receivable Minimum Days Past Due To Begin Foreclosure Proceedings FinancingReceivableMinimumDaysPastDueToBeginForeclosureProceedings	P90D
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Policy For Uncollectible Amounts FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Allowance for Credit Losses (Loans Receivable).</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> Effective October 1, 2019, the Company has applied FASB ASU 2016-13, </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Financial Instruments - Credit Losses ("ASC 326"),</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> so the allowance calculation is based on current expected credit loss methodology ("CECL"). Prior to October 1, 2019, the calculation was based on incurred loss methodology. The Company </span><div style="margin-top:12pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">maintains an allowance for credit losses (“ACL”) for the expected credit losses of the loan portfolio as well as unfunded loan commitments. The amount of ACL is based on ongoing, quarterly assessments by management. The CECL methodology requires an estimate of the credit losses expected over the life of an exposure (or pool of exposures) and replaces the incurred loss methodology’s threshold that delayed the recognition of a credit loss until it was probable a loss event was incurred. See </span><span style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline"><a href="#iaf8cf81d9e1e4eee89a616aae0b16aef_1529" style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Note E "Allowance for Losses on Loans"</a></span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> for details.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The ACL consists of the allowance for loan losses and the reserve for unfunded commitments. The estimate of expected credit losses under the CECL methodology is based on relevant information about past events, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amounts. Historical loss experience is generally the starting point for estimating expected credit losses. We then consider whether the historical loss experience should be adjusted for asset-specific risk characteristics or current conditions at the reporting date that did not exist over the period that historical experience was based for each loan type. Finally, we consider forecasts about future economic conditions or changes in collateral values that are reasonable and supportable. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Portfolio segment is defined as the level at which an entity develops and documents a systematic methodology to determine its ACL. The Company has designated two loan portfolio segments, commercial loans and consumer loans. These loan portfolio segments are further disaggregated into classes, which represent loans of similar type, risk characteristics, and methods for monitoring and assessing credit risk. The commercial loan portfolio segment is disaggregated into five classes: multi-family, commercial real estate, commercial and industrial, construction, and land acquisition and development. The risk of loss for the commercial loan portfolio segment is generally most indicated by the credit risk rating assigned to each borrower. Commercial loan risk ratings are determined by experienced senior credit officers based on specific facts and circumstances and are subject to periodic review by an independent internal team of credit specialists. The consumer loan portfolio segment is disaggregated into five classes: single-family-residential mortgage, custom construction, consumer lot loans, home equity lines of credit, and other consumer. The risk of loss for the consumer loan portfolio segment is generally most indicated by delinquency status and general economic factors. Each commercial and consumer loan portfolio class may also be further segmented based on risk characteristics.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">For most of our loan portfolio classes, the historical loss experience is determined using a cohort methodology. This method pools loans into groups (“cohorts”) sharing similar risk characteristics and tracks each cohort’s net charge-offs over the lives of the loans to calculate a historical loss rate. The historical loss rates for each cohort are then averaged to calculate an overall historical loss rate which is applied to the current loan balance to arrive at the quantitative baseline portion of the allowance for credit losses for the respective loan portfolio class. For certain loan portfolio classes, the Company determined there was not sufficient historical loss information to calculate a meaningful historical loss rate using the cohort methodology. For any such loan portfolio class, the weighted-average remaining maturity (“WARM”) methodology is being utilized until sufficient historical loss data is obtained. The WARM method multiplies an average annual loss rate by the expected remaining life of the loan pool to arrive at the quantitative baseline portion of the allowance for credit losses for the respective loan portfolio class. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company also considers qualitative adjustments to the historical loss rate for each loan portfolio class. The qualitative adjustments for each loan class consider the conditions over the period from which historical loss experience was based and are split into two components: 1) asset or class specific risk characteristics or current conditions at the reporting date related to portfolio credit quality, remaining payments, volume and nature, credit culture and management, business environment or other management factors and 2) reasonable and supportable forecast of future economic conditions and collateral values. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company performs a quarterly asset quality review which includes a review of forecasted gross charge-offs and recoveries, nonperforming assets, criticized loans, risk rating migration, delinquencies, etc. The asset quality review is performed by management and the results are used to consider a qualitative overlay to the quantitative baseline. The second qualitative adjustment noted above, economic conditions and collateral values, encompasses a one-year reasonable and supportable forecast period. The overlay adjustment for the reasonable and supportable forecast assumes an immediate reversion after the one-year forecast period to historical loss rates for the remaining life of the respective loan pool. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">When management deems it to be appropriate, the Company establishes a specific reserve for individually evaluated loans that do not share similar risk characteristics with the loans included in each respective loan pool. These individually evaluated loans are removed from their respective pools and typically represent collateral dependent loans but may also include other non-performing loans or troubled debt restructurings (“TDRs”). In addition, the Company individually evaluates “reasonably </span></div>expected” TDRs, which are identified by the Company as a loan expected to be classified as a TDR within the next six months. Management judgment is utilized to make this determination.
CY2021	wfsl	Loan Modification Basis Point Reduction Maximum LoanModificationBasisPointReductionMaximum	0.0200
CY2021	wfsl	Financing Receivable Minimum Days Past Due To Stop Accrual Of Interest FinancingReceivableMinimumDaysPastDueToStopAccrualOfInterest	P90D
CY2021	wfsl	Financing Receivable Loans Returned To Full Accrual Status FinancingReceivableLoansReturnedToFullAccrualStatus	P90D
CY2021	wfsl	Loans Receivable Numberof Consecutive Payments Requiredto Return Loanto Accrual Status LoansReceivableNumberofConsecutivePaymentsRequiredtoReturnLoantoAccrualStatus	6	payment
CY2021	wfsl	Loans Receivable Numberof Consecutive Payments Requiredto Return Loanto Accrual Status LoansReceivableNumberofConsecutivePaymentsRequiredtoReturnLoantoAccrualStatus	6	payment
CY2019Q3	us-gaap	Goodwill Goodwill	301368000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	7879000	USD
CY2019Q3	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	309247000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1339000	USD
CY2020	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	1471000	USD
CY2020	wfsl	Goodwill And Intangible Assets Acquired During Period GoodwillAndIntangibleAssetsAcquiredDuringPeriod	2810000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2151000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2151000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	302707000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	7199000	USD
CY2020Q3	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	309906000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	750000	USD
CY2021	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	750000	USD
CY2021	wfsl	Goodwill And Intangible Assets Acquired During Period GoodwillAndIntangibleAssetsAcquiredDuringPeriod	1500000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1387000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1387000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	303457000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	6562000	USD
CY2021Q3	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	310019000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1012000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	955000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	921000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	872000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	829000	USD
CY2021Q3	wfsl	Number Of Reportable Business Segments NumberOfReportableBusinessSegments	1	segment
CY2021Q3	wfsl	Consumer Financial Protection Bureau Consent Order Civil Money Penalty ConsumerFinancialProtectionBureauConsentOrderCivilMoneyPenalty	2500000	USD
CY2013Q4	wfsl	Consumer Financial Protection Bureau Consent Order Civil Money Penalty ConsumerFinancialProtectionBureauConsentOrderCivilMoneyPenalty	34000	USD
CY2020Q4	wfsl	Consumer Financial Protection Bureau Consent Order Civil Money Penalty ConsumerFinancialProtectionBureauConsentOrderCivilMoneyPenalty	200000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2090070000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	50829000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2640000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2138259000	USD
CY2021Q3	wfsl	Available For Sale Securities Yield AvailableForSaleSecuritiesYield	0.0169
CY2021Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	366025000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	13522000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	379547000	USD
CY2021Q3	wfsl	Held To Maturity Securities Yield HeldToMaturitySecuritiesYield	0.0317
CY2021Q3	us-gaap	Investments Investments	2456095000	USD
CY2021Q3	wfsl	Gross Unrealized Gains On Investments GrossUnrealizedGainsOnInvestments	64351000	USD
CY2021Q3	wfsl	Gross Unrealized Losses On Investments GrossUnrealizedLossesOnInvestments	2640000	USD
CY2021Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	2517806000	USD
CY2021Q3	wfsl	Yield Yield	0.0189
CY2020Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2210099000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	49007000	USD
CY2020Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	705838000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	21582000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	52000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	9614000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2249492000	USD
CY2020Q3	wfsl	Available For Sale Securities Yield AvailableForSaleSecuritiesYield	0.0197
CY2020Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	727368000	USD
CY2020Q3	wfsl	Heldtomaturity Securities Yield Without A Single Maturity Date HeldtomaturitySecuritiesYieldWithoutASingleMaturityDate	0.0314
CY2020Q3	us-gaap	Investments Investments	2915937000	USD
CY2020Q3	wfsl	Gross Unrealized Gains On Investments GrossUnrealizedGainsOnInvestments	70589000	USD
CY2020Q3	wfsl	Gross Unrealized Losses On Investments GrossUnrealizedLossesOnInvestments	9666000	USD
CY2020Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	2976860000	USD
CY2020Q3	wfsl	Yield Yield	0.0225
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	530227000	USD
CY2021	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1499000	USD
CY2021	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0	USD
CY2021	wfsl	Term Of Contractual Due Dates Of Substantially All Mortgage Backed Securities TermOfContractualDueDatesOfSubstantiallyAllMortgageBackedSecurities	P25Y
CY2021Q3	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	3459000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	3285000	USD
CY2021Q3	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	944000	USD
CY2020Q3	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	1811000	USD
CY2021Q3	wfsl	Debt Securities Unrealized Loss Position Number Of Positions DebtSecuritiesUnrealizedLossPositionNumberOfPositions	31	security
CY2020Q3	wfsl	Debt Securities Unrealized Loss Position Number Of Positions DebtSecuritiesUnrealizedLossPositionNumberOfPositions	51	security
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1584000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	52397000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1056000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	102324000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	2640000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	154721000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	0	USD
CY2021Q3	wfsl	Debt Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1584000	USD
CY2021Q3	wfsl	Debt Securities Continuous Unrealized Loss Position Less Than12 Months Fair Value DebtSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsFairValue	52397000	USD
CY2021Q3	wfsl	Debt Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1056000	USD
CY2021Q3	wfsl	Debt Securities Continuous Unrealized Loss Position12 Months Or Longer Fair Value DebtSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerFairValue	102324000	USD
CY2021Q3	wfsl	Debt Securities Unrealized Loss Position Accumulated Loss DebtSecuritiesUnrealizedLossPositionAccumulatedLoss	2640000	USD
CY2021Q3	wfsl	Debt Securities Unrealized Loss Position Fair Value DebtSecuritiesUnrealizedLossPositionFairValue	154721000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	5833000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	675518000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3781000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	285161000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	9614000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	960679000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	52000	USD
CY2020Q3	wfsl	Debt Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	5885000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	6853000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2020Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0	USD
CY2020Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	52000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	6853000	USD
CY2020Q3	wfsl	Debt Securities Continuous Unrealized Loss Position Less Than12 Months Fair Value DebtSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsFairValue	682371000	USD
CY2020Q3	wfsl	Debt Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3781000	USD
CY2020Q3	wfsl	Debt Securities Continuous Unrealized Loss Position12 Months Or Longer Fair Value DebtSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerFairValue	285161000	USD
CY2020Q3	wfsl	Debt Securities Unrealized Loss Position Accumulated Loss DebtSecuritiesUnrealizedLossPositionAccumulatedLoss	9666000	USD
CY2020Q3	wfsl	Debt Securities Unrealized Loss Position Fair Value DebtSecuritiesUnrealizedLossPositionFairValue	967532000	USD
CY2021Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	16299332000	USD
CY2021Q3	wfsl	Financing Receivable Ratio Of Loan Type To All Loans FinancingReceivableRatioOfLoanTypeToAllLoans	1
CY2020Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	14467722000	USD
CY2020Q3	wfsl	Financing Receivable Ratio Of Loan Type To All Loans FinancingReceivableRatioOfLoanTypeToAllLoans	1
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	171300000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	166955000	USD
CY2021Q3	us-gaap	Financing Receivable Loan In Process FinancingReceivableLoanInProcess	2232836000	USD
CY2020Q3	us-gaap	Financing Receivable Loan In Process FinancingReceivableLoanInProcess	1456072000	USD
CY2021Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-61626000	USD
CY2020Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-52378000	USD
CY2021Q3	wfsl	Financing Receivable Charges To Allowance Loans In Process And Deferred Fees FinancingReceivableChargesToAllowanceLoansInProcessAndDeferredFees	2465762000	USD
CY2020Q3	wfsl	Financing Receivable Charges To Allowance Loans In Process And Deferred Fees FinancingReceivableChargesToAllowanceLoansInProcessAndDeferredFees	1675405000	USD
CY2021Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	13833570000	USD
CY2020Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	12792317000	USD
CY2021Q3	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	46234000	USD
CY2020Q3	wfsl	Financing Receivable Net Of Charge Offs And Loans In Process FinancingReceivableNetOfChargeOffsAndLoansInProcess	12959272000	USD
CY2020Q3	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	48704000	USD
CY2021Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	5930015000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	5361504000	USD
CY2021Q3	us-gaap	Loans Receivable With Fixed Rates Of Interest1 LoansReceivableWithFixedRatesOfInterest1	8242668000	USD
CY2021Q3	wfsl	Financing Receivable With Fixed Rates Of Interest Percent Of Gross FinancingReceivableWithFixedRatesOfInterestPercentOfGross	0.589
CY2021Q3	us-gaap	Loans Receivable With Variable Rates Of Interest1 LoansReceivableWithVariableRatesOfInterest1	5762202000	USD
CY2021Q3	wfsl	Financing Receivable With Variable Rates Of Interest Percent Of Gross FinancingReceivableWithVariableRatesOfInterestPercentOfGross	0.411
CY2021Q3	wfsl	Financing Receivable Nonaccrual Percent Of Total Loans FinancingReceivableNonaccrualPercentOfTotalLoans	0.0023
CY2020Q3	wfsl	Financing Receivable Nonaccrual Percent Of Total Loans FinancingReceivableNonaccrualPercentOfTotalLoans	0.0022
CY2021Q3	wfsl	Financing Receivable Net Of Charge Offs And Loans In Process FinancingReceivableNetOfChargeOffsAndLoansInProcess	14004870000	USD
CY2021Q3	us-gaap	Financing Receivable Percent Past Due1 FinancingReceivablePercentPastDue1	0.0019
CY2020Q3	us-gaap	Financing Receivable Percent Past Due1 FinancingReceivablePercentPastDue1	0.0024
CY2020Q3	wfsl	Number Of Businesses Assisted Cares Act NumberOfBusinessesAssistedCARESAct	6500	business
CY2021Q3	wfsl	Number Of Businesses Assisted Cares Act NumberOfBusinessesAssistedCARESAct	2500	business
CY2021	wfsl	Loan Modification Basis Point Reduction Minimum LoanModificationBasisPointReductionMinimum	0.0100
CY2021	wfsl	Loan Modification Basis Point Reduction Maximum LoanModificationBasisPointReductionMaximum	0.0200
CY2021Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	65128000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	91408000	USD
CY2021Q3	wfsl	Financing Receivable Impaired Troubled Debt Restructuring Percentof Restructured Loans Performing FinancingReceivableImpairedTroubledDebtRestructuringPercentofRestructuredLoansPerforming	0.977
CY2021Q3	wfsl	Single Family Residential Loans As Percentage Of Restructured Loans SingleFamilyResidentialLoansAsPercentageOfRestructuredLoans	0.921
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	425000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	6770000	USD
CY2021	wfsl	Financing Receivable Allowance For Credit Losses Provision And Transfers FinancingReceivableAllowanceForCreditLossesProvisionAndTransfers	-2000000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	171300000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	131534000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5755000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	9026000	USD
CY2020	wfsl	Financing Receivable Allowance For Credit Losses Provision And Transfers FinancingReceivableAllowanceForCreditLossesProvisionAndTransfers	14400000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	166955000	USD
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	500000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	21750000	USD
CY2021	wfsl	Financing Receivable Allowance For Credit Loss Recovery Including Off Balance Sheet Credit Loss Liability FinancingReceivableAllowanceForCreditLossRecoveryIncludingOffBalanceSheetCreditLossLiability	6345000	USD
CY2020	wfsl	Financing Receivable Allowance For Credit Loss Recovery Including Off Balance Sheet Credit Loss Liability FinancingReceivableAllowanceForCreditLossRecoveryIncludingOffBalanceSheetCreditLossLiability	3271000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	171300000	USD
CY2021Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	14004870000	USD
CY2020Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	12959272000	USD
CY2021Q3	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	1515487000	USD
CY2021Q3	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	4215000	USD
CY2021Q3	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	1515487000	USD
CY2021Q3	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	4215000	USD
CY2020Q3	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	2562765000	USD
CY2020Q3	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	24664000	USD
CY2020Q3	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	2562765000	USD
CY2020Q3	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	24664000	USD
CY2021	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	537660000	USD
CY2021	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	44188000	USD
CY2020	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	545708000	USD
CY2020	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	51445000	USD
CY2021	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	0	USD
CY2021Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	387932000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	412629000	USD
CY2021Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	132780000	USD
CY2020Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	159824000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	255152000	USD
CY2020	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	0	USD
CY2021	wfsl	Revenue From Contract With Customer Percentage RevenueFromContractWithCustomerPercentage	0.058
CY2020	wfsl	Revenue From Contract With Customer Percentage RevenueFromContractWithCustomerPercentage	0.051
CY2021Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	50636000	USD
CY2020Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	53799000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	252805000	USD
CY2021Q3	wfsl	Percentage Of Non Interest Bearing Domestic Deposits To Deposits Checking PercentageOfNonInterestBearingDomesticDepositsToDepositsChecking	0.201
CY2021Q3	us-gaap	Noninterest Bearing Domestic Deposit Checking NoninterestBearingDomesticDepositChecking	3122397000	USD
CY2020Q3	us-gaap	Noninterest Bearing Domestic Deposit Checking NoninterestBearingDomesticDepositChecking	2164071000	USD
CY2020Q3	wfsl	Percentage Of Non Interest Bearing Domestic Deposits To Deposits Checking PercentageOfNonInterestBearingDomesticDepositsToDepositsChecking	0.157
CY2021Q3	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	3566322000	USD
CY2021Q3	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Checking PercentageOfInterestBearingDomesticDepositsToDepositsChecking	0.229
CY2021Q3	us-gaap	Weighted Average Rate Domestic Deposit Checking WeightedAverageRateDomesticDepositChecking	0.0020
CY2020Q3	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	3029576000	USD
CY2020Q3	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Checking PercentageOfInterestBearingDomesticDepositsToDepositsChecking	0.220
CY2020Q3	us-gaap	Weighted Average Rate Domestic Deposit Checking WeightedAverageRateDomesticDepositChecking	0.0023
CY2021Q3	us-gaap	Interest Bearing Domestic Deposit Savings InterestBearingDomesticDepositSavings	1039336000	USD
CY2021Q3	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Savings PercentageOfInterestBearingDomesticDepositsToDepositsSavings	0.067
CY2021Q3	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0011
CY2020Q3	us-gaap	Interest Bearing Domestic Deposit Savings InterestBearingDomesticDepositSavings	872087000	USD
CY2020Q3	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Savings PercentageOfInterestBearingDomesticDepositsToDepositsSavings	0.063
CY2020Q3	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0011
CY2021Q3	us-gaap	Interest Bearing Domestic Deposit Money Market InterestBearingDomesticDepositMoneyMarket	4379970000	USD
CY2021Q3	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket	0.282
CY2021Q3	us-gaap	Weighted Average Rate Domestic Deposit Money Market WeightedAverageRateDomesticDepositMoneyMarket	0.0019
CY2020Q3	us-gaap	Interest Bearing Domestic Deposit Money Market InterestBearingDomesticDepositMoneyMarket	3740698000	USD
CY2020Q3	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket	0.271
CY2020Q3	us-gaap	Weighted Average Rate Domestic Deposit Money Market WeightedAverageRateDomesticDepositMoneyMarket	0.0030
CY2021Q3	us-gaap	Interest Bearing Domestic Deposit Time Deposits InterestBearingDomesticDepositTimeDeposits	3434087000	USD
CY2021Q3	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Time Deposits PercentageOfInterestBearingDomesticDepositsToDepositsTimeDeposits	0.221
CY2021Q3	us-gaap	Weighted Average Rate Domestic Deposit Time Deposits WeightedAverageRateDomesticDepositTimeDeposits	0.0054
CY2020Q3	us-gaap	Interest Bearing Domestic Deposit Time Deposits InterestBearingDomesticDepositTimeDeposits	3973192000	USD
CY2020Q3	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Time Deposits PercentageOfInterestBearingDomesticDepositsToDepositsTimeDeposits	0.288
CY2020Q3	us-gaap	Weighted Average Rate Domestic Deposit Time Deposits WeightedAverageRateDomesticDepositTimeDeposits	0.0117
CY2021Q3	us-gaap	Deposits Deposits	15542112000	USD
CY2021Q3	wfsl	Percentage Of Domestic Deposits To Deposits PercentageOfDomesticDepositsToDeposits	1
CY2021Q3	wfsl	Time Deposits Lessthan One Percent TimeDepositsLessthanOnePercent	3153788000	USD
CY2021Q3	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0023
CY2020Q3	us-gaap	Deposits Deposits	13779624000	USD
CY2020Q3	wfsl	Percentage Of Domestic Deposits To Deposits PercentageOfDomesticDepositsToDeposits	1
CY2020Q3	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0048
CY2020Q3	wfsl	Time Deposits Lessthan One Percent TimeDepositsLessthanOnePercent	920220000	USD
CY2021Q3	wfsl	Time Deposits From One Percentto Lessthan Two Percent TimeDepositsFromOnePercenttoLessthanTwoPercent	229594000	USD
CY2020Q3	wfsl	Time Deposits From One Percentto Lessthan Two Percent TimeDepositsFromOnePercenttoLessthanTwoPercent	2967345000	USD
CY2021Q3	wfsl	Time Deposits From Two Percentto Lessthan Three Percent TimeDepositsFromTwoPercenttoLessthanThreePercent	50608000	USD
CY2020Q3	wfsl	Time Deposits From Two Percentto Lessthan Three Percent TimeDepositsFromTwoPercenttoLessthanThreePercent	85533000	USD
CY2021Q3	wfsl	Time Deposits From Three Percentto Lessthan Four Percent TimeDepositsFromThreePercenttoLessthanFourPercent	97000	USD
CY2020Q3	wfsl	Time Deposits From Three Percentto Lessthan Four Percent TimeDepositsFromThreePercenttoLessthanFourPercent	94000	USD
CY2021Q3	us-gaap	Time Deposits TimeDeposits	3434087000	USD
CY2020Q3	wfsl	Customer Accounts Greater Than250000 CustomerAccountsGreaterThan250000	5491395000	USD
CY2020Q3	us-gaap	Time Deposits TimeDeposits	3973192000	USD
CY2021Q3	wfsl	Time Deposit Maturities Three Months Or Less TimeDepositMaturitiesThreeMonthsOrLess	1085001000	USD
CY2020Q3	wfsl	Time Deposit Maturities Three Months Or Less TimeDepositMaturitiesThreeMonthsOrLess	1238184000	USD
CY2021Q3	wfsl	Time Deposit Maturities Three Months To Six Months TimeDepositMaturitiesThreeMonthsToSixMonths	819906000	USD
CY2020Q3	wfsl	Time Deposit Maturities Three Months To Six Months TimeDepositMaturitiesThreeMonthsToSixMonths	1282051000	USD
CY2021Q3	wfsl	Time Deposit Maturities Six Months To Twelve Months TimeDepositMaturitiesSixMonthsToTwelveMonths	870801000	USD
CY2020Q3	wfsl	Time Deposit Maturities Six Months To Twelve Months TimeDepositMaturitiesSixMonthsToTwelveMonths	607181000	USD
CY2021Q3	wfsl	Time Deposit Maturities After Twelve Months TimeDepositMaturitiesAfterTwelveMonths	658379000	USD
CY2020Q3	wfsl	Time Deposit Maturities After Twelve Months TimeDepositMaturitiesAfterTwelveMonths	845776000	USD
CY2021Q3	us-gaap	Time Deposits TimeDeposits	3434087000	USD
CY2020Q3	us-gaap	Time Deposits TimeDeposits	3973192000	USD
CY2021Q3	wfsl	Customer Accounts Greater Than250000 CustomerAccountsGreaterThan250000	7198111000	USD
CY2021	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	5545000	USD
CY2020	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	8447000	USD
CY2019	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	12499000	USD
CY2021	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	1143000	USD
CY2020	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	959000	USD
CY2019	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	980000	USD
CY2021	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	8723000	USD
CY2020	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	18951000	USD
CY2019	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	21967000	USD
CY2021	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	27100000	USD
CY2020	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	72494000	USD
CY2019	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	87665000	USD
CY2021	us-gaap	Interest Expense Deposits InterestExpenseDeposits	42511000	USD
CY2020	us-gaap	Interest Expense Deposits InterestExpenseDeposits	100851000	USD
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	123111000	USD
CY2021	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	198000	USD
CY2020	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	539000	USD
CY2020Q3	wfsl	Federal Home Loan Bank Advances Maturities Summary Duefrom Three Yearsto Five Yearsof Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDuefromThreeYearstoFiveYearsofBalanceSheetDate	350000000	USD
CY2019	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	895000	USD
CY2021	us-gaap	Interest Expense Customer Deposits InterestExpenseCustomerDeposits	42313000	USD
CY2020	us-gaap	Interest Expense Customer Deposits InterestExpenseCustomerDeposits	100312000	USD
CY2019	us-gaap	Interest Expense Customer Deposits InterestExpenseCustomerDeposits	122216000	USD
CY2021Q3	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0023
CY2020Q3	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0048
CY2019Q3	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0108
CY2021	us-gaap	Weighted Average Rate Interest Bearing Domestic Deposits Over Time WeightedAverageRateInterestBearingDomesticDepositsOverTime	0.0035
CY2020	us-gaap	Weighted Average Rate Interest Bearing Domestic Deposits Over Time WeightedAverageRateInterestBearingDomesticDepositsOverTime	0.0094
CY2019	us-gaap	Weighted Average Rate Interest Bearing Domestic Deposits Over Time WeightedAverageRateInterestBearingDomesticDepositsOverTime	0.0105
CY2021Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	1320000000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	1830000000	USD
CY2021Q3	wfsl	Federal Home Loan Bank Advances Maturities Summary Due From One Year To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneYearToThreeYearsOfBalanceSheetDate	400000000	USD
CY2020Q3	wfsl	Federal Home Loan Bank Advances Maturities Summary Due From One Year To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneYearToThreeYearsOfBalanceSheetDate	520000000	USD
CY2021Q3	wfsl	Federal Home Loan Bank Advances Maturities Summary Duefrom Three Yearsto Five Yearsof Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDuefromThreeYearstoFiveYearsofBalanceSheetDate	0	USD
CY2021Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due After Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterFiveYearsOfBalanceSheetDate	0	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due After Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterFiveYearsOfBalanceSheetDate	0	USD
CY2021Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	1720000000	USD
CY2020Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	2700000000	USD
CY2021Q3	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Next Rolling Twelve Months FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInNextRollingTwelveMonths	100000000	USD
CY2021	wfsl	Federal Home Loan Bank Advances Weighted Average Effective Maturity FederalHomeLoanBankAdvancesWeightedAverageEffectiveMaturity	P5Y10D
CY2021Q3	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0151
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0179
CY2019Q3	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0249
CY2021	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0198
CY2020	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0203
CY2019	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0269
CY2021	wfsl	Federal Home Loan Bank Advances Activity For Year Daily Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearDailyAverageBalanceOfAgreementsOutstanding	2234027000	USD
CY2020	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	51445000	USD
CY2020	wfsl	Federal Home Loan Bank Advances Activity For Year Daily Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearDailyAverageBalanceOfAgreementsOutstanding	2532596000	USD
CY2019	wfsl	Federal Home Loan Bank Advances Activity For Year Daily Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearDailyAverageBalanceOfAgreementsOutstanding	2533890000	USD
CY2021Q3	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	2700000000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	3050000000	USD
CY2019Q3	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	2665000000	USD
CY2021	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	44188000	USD
CY2019	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	68190000	USD
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	27785000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	31610000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	29569000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	33302000	USD
CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y6M
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0186
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	6425000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	6494000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2864000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	8341000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	6754000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	6557000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	1095000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	1353000	USD
CY2021	us-gaap	Sublease Income SubleaseIncome	185000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	338000	USD
CY2021	us-gaap	Lease Cost LeaseCost	7664000	USD
CY2020	us-gaap	Lease Cost LeaseCost	7572000	USD
CY2021Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	27500000	USD
CY2020Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	25000000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6197000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5688000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4971000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3996000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3103000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	8315000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	32270000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2701000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	29569000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	7849000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	6455000	USD
CY2021Q3	wfsl	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	6655000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	45724000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	44150000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	173000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	265000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	1080000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	892000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	6230000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	3506000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2508000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2218000	USD
CY2020Q3	wfsl	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	7660000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4525000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2269000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	66895000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	60960000	USD
CY2021Q3	wfsl	Deferred Tax Liabilities Federal Home Loan Bank Stock Dividends DeferredTaxLiabilitiesFederalHomeLoanBankStockDividends	9783000	USD
CY2020Q3	wfsl	Deferred Tax Liabilities Federal Home Loan Bank Stock Dividends DeferredTaxLiabilitiesFederalHomeLoanBankStockDividends	14637000	USD
CY2021Q3	wfsl	Deferred Tax Liabilities Investmentsand Derivative Instruments DeferredTaxLiabilitiesInvestmentsandDerivativeInstruments	20845000	USD
CY2020Q3	wfsl	Deferred Tax Liabilities Investmentsand Derivative Instruments DeferredTaxLiabilitiesInvestmentsandDerivativeInstruments	5064000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	5645000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	7116000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	21426000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	21399000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	6249000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	7270000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	9139000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5767000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	61253000	USD
CY2021Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	73087000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6192000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	293000	USD
CY2021Q3	wfsl	Current Tax Asset Liability CurrentTaxAssetLiability	10069000	USD
CY2020Q3	wfsl	Current Tax Asset Liability CurrentTaxAssetLiability	6001000	USD
CY2021Q3	wfsl	Income Tax Asset Liability Net IncomeTaxAssetLiabilityNet	3877000	USD
CY2020Q3	wfsl	Income Tax Asset Liability Net IncomeTaxAssetLiabilityNet	5708000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.02
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.02
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.02
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.02
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.02
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5584000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5310000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.03
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.20
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	53820000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	49782000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	46376000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-8468000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-7858000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1916000	USD
CY2021	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	45352000	USD
CY2020	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	41924000	USD
CY2019	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	48292000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4557000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1413000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1486000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-330000	USD
CY2021	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	4171000	USD
CY2020	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	3824000	USD
CY2019	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	4227000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	59404000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	55092000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	50933000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-9881000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-9344000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1586000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	49523000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45748000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	52519000	USD
CY2021	wfsl	Income Tax Examination Returns Opento Examination Maximum IncomeTaxExaminationReturnsOpentoExaminationMaximum	P5Y
CY2021	wfsl	Income Tax Examination Returns Opento Examination State Impactof Federal Changes Maximum IncomeTaxExaminationReturnsOpentoExaminationStateImpactofFederalChangesMaximum	P2Y
CY2021	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	1
CY2021	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Amount DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount	58000	USD
CY2021	wfsl	Defined Contribution Plan Service Period For Participation Eligibility DefinedContributionPlanServicePeriodForParticipationEligibility	P30D
CY2021	wfsl	Defined Contribution Plan Service Period For Eligibility Of Profit Sharing Or Matching Contributions DefinedContributionPlanServicePeriodForEligibilityOfProfitSharingOrMatchingContributions	P1Y
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.04
CY2021	wfsl	Defined Contribution Plan Maximum Annual Employer Profit Sharing Contribution Percent DefinedContributionPlanMaximumAnnualEmployerProfitSharingContributionPercent	0.07
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	9905000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8333000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6920000	USD
CY2021	wfsl	Share Based Compensation Arrangement By Share Based Payment Award Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm	P10Y
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1043349	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	356343	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	320287	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	27.21
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3136000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1043349	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	29.53
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	8085	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.88
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	125827	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	30.25
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1229724	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	28.93
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1676000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1344000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	521000	USD
CY2021	wfsl	Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageGrantDateFairValue	4.39
CY2020	wfsl	Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageGrantDateFairValue	4.37
CY2019	wfsl	Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageGrantDateFairValue	5.21
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P9Y
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	19846	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.06
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	179555	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	29.05
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1030323	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	29.14
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	5330000	USD
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	0
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	276000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	102000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	414000	USD
CY2021	wfsl	Share Based Compensation Arrangement By Share Based Payment Award Options Exercised Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedGrantDateFairValue	78000	USD
CY2020	wfsl	Share Based Compensation Arrangement By Share Based Payment Award Options Exercised Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedGrantDateFairValue	33000	USD
CY2019	wfsl	Share Based Compensation Arrangement By Share Based Payment Award Options Exercised Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedGrantDateFairValue	51000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	339000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	144000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	298000	USD
CY2020Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	1210689	shares
CY2020Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	4.38
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	293167	shares
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	5.33
CY2018Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	0	shares
CY2018Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	0
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1043349	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.17
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	356343	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	5.33
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	0	shares
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	0
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	0	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	0
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	0	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	0
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares	179555	shares
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue	4.31
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares	125827	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue	4.83
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	10810113	shares
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	3339530	shares
CY2021Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	3817118	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares	63176	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue	5.33
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	1031134	shares
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	4.39
CY2020Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	1210689	shares
CY2020Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	4.38
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	293167	shares
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	5.33
CY2021Q1	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.04875
CY2021	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	293325000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72529188	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76721969	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80471316	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72565920	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	76731464	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	80495163	shares
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	173581000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	173581000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	173438000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	173438000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	210256000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	210256000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.39
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.26
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.61
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.39
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.26
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.61

Files In Submission

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2021 Form 10-K Financial Statement

#000093652821000122 Filed on November 19, 2021

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$WAFD WAFD INC Stock $wafd

2021 Form 10-K Financial Statement

#000093652821000122 Filed on November 19, 2021

Income Statement

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$WAFD
WAFD INC Stock $wafd