$FITB
FIFTH THIRD BANCORP Stock $fitb

$fitb Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000003552722000119 Filed on February 25, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021
Revenue		$1.292B	$5.211B
YoY Change		-2.78%	-6.48%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$98.00M	$388.0M
YoY Change		10.11%	7.18%
% of Gross Profit
Depreciation & Amortization	-$22.00M	$31.00M	$124.0M
YoY Change	-116.42%	-3.13%	-1.59%
% of Gross Profit
Operating Expenses		$98.00M	$388.0M
YoY Change		10.11%	7.18%
Operating Profit
YoY Change
Interest Expense		$103.0M	$441.0M
YoY Change		-35.22%	-44.18%
% of Operating Profit
Other Income/Expense, Net			$218.0M
YoY Change			-1.36%
Pretax Income	$828.0M	$895.0M	$3.517B
YoY Change	10.99%	19.97%	95.72%
Income Tax	$165.0M	$191.0M	$747.0M
% Of Pretax Income	19.93%	21.34%	21.24%
Net Earnings	$663.0M	$704.0M	$2.770B
YoY Change	9.77%	21.17%	94.11%
Net Earnings / Revenue		54.49%	53.16%
Basic Earnings Per Share		$0.98	$3.78
Diluted Earnings Per Share	$950.7K	$0.97	$3.73
COMMON SHARES
Basic Shares Outstanding	683.8M shares	697.0M shares	702.0M shares
Diluted Shares Outstanding		706.0M shares	711.0M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2021
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$2.994B	$3.213B
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	$2.120B	$2.101B	$2.547B
YoY Change	1.53%	0.53%	1.43%
Goodwill	$4.514B	$4.514B
YoY Change	6.01%	5.94%
Intangibles	$156.0M	$169.0M
YoY Change	12.23%	7.64%
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	$211.1B	$207.7B	$211.1B
YoY Change	3.14%	2.84%	3.14%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$520.0M	$531.0M	$520.0M
YoY Change	-1.33%	-0.19%	-1.33%
Deferred Revenue
YoY Change
Short-Term Debt	$825.0M	$876.0M	$825.0M
YoY Change	-18.96%	-8.75%	-18.96%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$946.0M	$2.083B	$946.0M
YoY Change	18.25%	-16.68%	18.25%
LONG-TERM LIABILITIES
Long-Term Debt	$11.78B	$11.42B	$11.78B
YoY Change	-20.99%	-24.49%	-20.99%
Other Long-Term Liabilities	$4.703B	$5.721B	$4.703B
YoY Change	21.12%	51.39%	21.12%
Total Long-Term Liabilities	$16.48B	$17.14B	$16.48B
YoY Change	-12.29%	-9.32%	-12.29%
TOTAL LIABILITIES
Total Short-Term Liabilities	$946.0M	$2.083B	$946.0M
Total Long-Term Liabilities	$16.48B	$17.14B	$16.48B
Total Liabilities	$188.9B	$185.2B	$188.9B
YoY Change	4.04%	3.44%	4.04%
SHAREHOLDERS EQUITY
Retained Earnings	$20.24B	$19.82B
YoY Change	10.07%	10.03%
Common Stock	$2.051B	$2.051B
YoY Change	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$7.024B	$6.708B
YoY Change	23.75%	18.08%
Treasury Stock Shares	241.1M shares	234.1M shares
Shareholders Equity	$22.21B	$22.52B	$22.21B
YoY Change
Total Liabilities & Shareholders Equity	$211.1B	$207.7B	$211.1B
YoY Change	3.14%	2.84%	3.14%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021
OPERATING ACTIVITIES
Net Income	$663.0M	$704.0M	$2.770B
YoY Change	9.77%	21.17%	94.11%
Depreciation, Depletion And Amortization	-$22.00M	$31.00M	$124.0M
YoY Change	-116.42%	-3.13%	-1.59%
Cash From Operating Activities	$1.342B	$1.239B	$2.704B
YoY Change	-181.63%	1866.67%	628.84%
INVESTING ACTIVITIES
Capital Expenditures	-$256.0M	-$199.0M	$309.0M
YoY Change	228.21%	84.26%	1.31%
Acquisitions
YoY Change
Other Investing Activities	-$5.387B	-$2.514B	-$7.278B
YoY Change	2232.03%	-308.46%	-76.93%
Cash From Investing Activities	-$5.643B	-$2.713B	-$7.968B
YoY Change	1726.21%	-347.09%	-75.02%
FINANCING ACTIVITIES
Cash Dividend Paid			$897.0M
YoY Change			4.55%
Common Stock Issuance & Retirement, Net			$1.393B
YoY Change
Debt Paid & Issued, Net			$3.603B
YoY Change			28.72%
Cash From Financing Activities	4.082B	1.402B	$5.111B
YoY Change	94.01%	-201.15%	-83.72%
NET CHANGE
Cash From Operating Activities	1.342B	1.239B	$2.704B
Cash From Investing Activities	-5.643B	-2.713B	-$7.968B
Cash From Financing Activities	4.082B	1.402B	$5.111B
Net Change In Cash	-219.0M	-72.00M	-$153.0M
YoY Change	-245.03%	-68.0%	16.79%
FREE CASH FLOW
Cash From Operating Activities	$1.342B	$1.239B	$2.704B
Capital Expenditures	-$256.0M	-$199.0M	$309.0M
Free Cash Flow	$1.598B	$1.438B	$2.395B
YoY Change	-202.04%	740.94%	3528.79%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000035527
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity Registrant Name EntityRegistrantName	FIFTH THIRD BANCORP
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CY2021Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtMember
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Entity File Number EntityFileNumber	001-33653
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	OH
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	31-0854434
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	38 Fountain Square Plaza
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Cincinnati
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	OH
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CY2021	dei	City Area Code CityAreaCode	800
CY2021	dei	Local Phone Number LocalPhoneNumber	972-3030
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CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
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CY2020	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	320000000	USD
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CY2020	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	211000000	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1064000000	USD
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-7000000	USD
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	62000000	USD
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CY2021	us-gaap	Noninterest Income NoninterestIncome	3118000000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	2830000000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	3536000000	USD
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CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2418000000	USD
CY2021	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	388000000	USD
CY2020	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	362000000	USD
CY2019	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	422000000	USD
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CY2020	us-gaap	Occupancy Net OccupancyNet	350000000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	332000000	USD
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CY2020	us-gaap	Equipment Expense EquipmentExpense	130000000	USD
CY2019	us-gaap	Equipment Expense EquipmentExpense	129000000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	137000000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	140000000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	133000000	USD
CY2021	us-gaap	Marketing Expense MarketingExpense	107000000	USD
CY2020	us-gaap	Marketing Expense MarketingExpense	104000000	USD
CY2019	us-gaap	Marketing Expense MarketingExpense	162000000	USD
CY2021	fitb	Card And Processing Expense CardAndProcessingExpense	89000000	USD
CY2020	fitb	Card And Processing Expense CardAndProcessingExpense	121000000	USD
CY2019	fitb	Card And Processing Expense CardAndProcessingExpense	130000000	USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	951000000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	921000000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	934000000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	4748000000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	4718000000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	4660000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3517000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1797000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3202000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	747000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	370000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	690000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	2770000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1427000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2512000000	USD
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	111000000	USD
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	104000000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	93000000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2659000000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1323000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2419000000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.78
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.84
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CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.83
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.33
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	702188552	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	714729585	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	710433611	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	711197805	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	719735415	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	720065498	shares
CY2021	us-gaap	Net Income Loss NetIncomeLoss	2770000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1427000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2512000000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1043000000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1153000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1046000000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	34000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	7000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-142000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	483000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	275000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	223000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	187000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	13000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-4000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	9000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	5000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	7000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	7000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	8000000	USD
CY2021	fitb	Other Comprehensive Income Loss Other Adjustments After Tax OtherComprehensiveIncomeLossOtherAdjustmentsAfterTax	0	USD
CY2020	fitb	Other Comprehensive Income Loss Other Adjustments After Tax OtherComprehensiveIncomeLossOtherAdjustmentsAfterTax	-4000000	USD
CY2019	fitb	Other Comprehensive Income Loss Other Adjustments After Tax OtherComprehensiveIncomeLossOtherAdjustmentsAfterTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1394000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1409000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1304000000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1376000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2836000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	3816000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	16250000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2512000000	USD
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CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.94
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	691000000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1763000000	USD
CY2019	us-gaap	Stock And Warrants Issued During Period Value Preferred Stock And Warrants StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants	242000000	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	3356000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	72000000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-4000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	21203000000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1409000000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.08
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	780000000	USD
CY2020	us-gaap	Stock And Warrants Issued During Period Value Preferred Stock And Warrants StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants	346000000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	82000000	USD
CY2020	us-gaap	Stockholders Equity Other StockholdersEquityOther	0	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	23111000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	23111000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	2770000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1394000000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.14
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	805000000	USD
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1393000000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	33000000	USD
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	1000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	2770000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1427000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2512000000	USD
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-377000000	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1097000000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	471000000	USD
CY2021	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	349000000	USD
CY2020	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	492000000	USD
CY2019	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	472000000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	120000000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	123000000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	132000000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-162000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-246000000	USD
CY2021	fitb	Gain Loss On Sale Of Securities Net Including Gains Losses In Corporate Banking Revenue GainLossOnSaleOfSecuritiesNetIncludingGainsLossesInCorporateBankingRevenue	-16000000	USD
CY2020	fitb	Gain Loss On Sale Of Securities Net Including Gains Losses In Corporate Banking Revenue GainLossOnSaleOfSecuritiesNetIncludingGainsLossesInCorporateBankingRevenue	69000000	USD
CY2019	fitb	Gain Loss On Sale Of Securities Net Including Gains Losses In Corporate Banking Revenue GainLossOnSaleOfSecuritiesNetIncludingGainsLossesInCorporateBankingRevenue	50000000	USD
CY2021	fitb	Msr Fair Value Adjustment MsrFairValueAdjustment	139000000	USD
CY2020	fitb	Msr Fair Value Adjustment MsrFairValueAdjustment	565000000	USD
CY2019	fitb	Msr Fair Value Adjustment MsrFairValueAdjustment	376000000	USD
CY2021	fitb	Gain Loss On Sale And Fair Value Adjustment On Loans And Leases GainLossOnSaleAndFairValueAdjustmentOnLoansAndLeases	335000000	USD
CY2020	fitb	Gain Loss On Sale And Fair Value Adjustment On Loans And Leases GainLossOnSaleAndFairValueAdjustmentOnLoansAndLeases	291000000	USD
CY2019	fitb	Gain Loss On Sale And Fair Value Adjustment On Loans And Leases GainLossOnSaleAndFairValueAdjustmentOnLoansAndLeases	137000000	USD
CY2021	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-10000000	USD
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-26000000	USD
CY2019	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-24000000	USD
CY2021	fitb	Gain Loss On Sales Of Hsa Deposit Portfolio GainLossOnSalesOfHSADepositPortfolio	60000000	USD
CY2020	fitb	Gain Loss On Sales Of Hsa Deposit Portfolio GainLossOnSalesOfHSADepositPortfolio	0	USD
CY2019	fitb	Gain Loss On Sales Of Hsa Deposit Portfolio GainLossOnSalesOfHSADepositPortfolio	0	USD
CY2021	fitb	Proceeds From Sale Of Securities In Equity Method Investments ProceedsFromSaleOfSecuritiesInEquityMethodInvestments	0	USD
CY2020	fitb	Proceeds From Sale Of Securities In Equity Method Investments ProceedsFromSaleOfSecuritiesInEquityMethodInvestments	0	USD
CY2019	fitb	Proceeds From Sale Of Securities In Equity Method Investments ProceedsFromSaleOfSecuritiesInEquityMethodInvestments	-562000000	USD
CY2021	fitb	Taxable Receivable Agreement Payment TaxableReceivableAgreementPayment	46000000	USD
CY2020	fitb	Taxable Receivable Agreement Payment TaxableReceivableAgreementPayment	74000000	USD
CY2019	fitb	Taxable Receivable Agreement Payment TaxableReceivableAgreementPayment	346000000	USD
CY2021	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	17204000000	USD
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	12481000000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	8157000000	USD
CY2021	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	16888000000	USD
CY2020	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	14767000000	USD
CY2019	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	8896000000	USD
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	55000000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	17000000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	66000000	USD
CY2021	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-15000000	USD
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CY2019	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	29000000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	37000000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	855000000	USD
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CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-217000000	USD
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CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-140000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2704000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	371000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1824000000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	3125000000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1743000000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	10596000000	USD
CY2021	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	718000000	USD
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	157000000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	259000000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	19000000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	33000000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	90000000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	6079000000	USD
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CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2271000000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	11713000000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	5266000000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	13959000000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	309000000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	305000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	243000000	USD
CY2021	us-gaap	Payments To Acquire Mortgage Servicing Rights Msr PaymentsToAcquireMortgageServicingRightsMSR	381000000	USD
CY2020	us-gaap	Payments To Acquire Mortgage Servicing Rights Msr PaymentsToAcquireMortgageServicingRightsMSR	44000000	USD
CY2019	us-gaap	Payments To Acquire Mortgage Servicing Rights Msr PaymentsToAcquireMortgageServicingRightsMSR	26000000	USD
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	24000000	USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	19000000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	28000000	USD
CY2021	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	63000000	USD
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	69000000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1057000000	USD
CY2021	fitb	Net Cash Paid On Acquisitions Received From Divestitures NetCashPaidOnAcquisitionsReceivedFromDivestitures	297000000	USD
CY2020	fitb	Net Cash Paid On Acquisitions Received From Divestitures NetCashPaidOnAcquisitionsReceivedFromDivestitures	4000000	USD
CY2019	fitb	Net Cash Paid On Acquisitions Received From Divestitures NetCashPaidOnAcquisitionsReceivedFromDivestitures	-1210000000	USD
CY2021	fitb	Payments On Sale Of Hsa Deposit Portfolio PaymentsOnSaleOfHSADepositPortfolio	431000000	USD
CY2020	fitb	Payments On Sale Of Hsa Deposit Portfolio PaymentsOnSaleOfHSADepositPortfolio	0	USD
CY2019	fitb	Payments On Sale Of Hsa Deposit Portfolio PaymentsOnSaleOfHSADepositPortfolio	0	USD
CY2021	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	1172000000	USD
CY2020	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	31446000000	USD
CY2019	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	612000000	USD
CY2021	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	3721000000	USD
CY2020	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	451000000	USD
CY2019	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	1407000000	USD
CY2021	fitb	Payments To Proceed From Acquireequipmentonlease PaymentsToProceedFromAcquireequipmentonlease	-28000000	USD
CY2020	fitb	Payments To Proceed From Acquireequipmentonlease PaymentsToProceedFromAcquireequipmentonlease	53000000	USD
CY2019	fitb	Payments To Proceed From Acquireequipmentonlease PaymentsToProceedFromAcquireequipmentonlease	61000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-7968000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31902000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-797000000	USD
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	10734000000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	32019000000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	3742000000	USD
CY2021	fitb	Proceeds From Payments For Other Short Term Borrowings And Federal Funds Purchased ProceedsFromPaymentsForOtherShortTermBorrowingsAndFederalFundsPurchased	-193000000	USD
CY2020	fitb	Proceeds From Payments For Other Short Term Borrowings And Federal Funds Purchased ProceedsFromPaymentsForOtherShortTermBorrowingsAndFederalFundsPurchased	182000000	USD
CY2019	fitb	Proceeds From Payments For Other Short Term Borrowings And Federal Funds Purchased ProceedsFromPaymentsForOtherShortTermBorrowingsAndFederalFundsPurchased	-1494000000	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	897000000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	858000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	753000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	562000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2557000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3866000000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3603000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2799000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	4212000000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1393000000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1763000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	346000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	242000000	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-99000000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-47000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-58000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	5111000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	31400000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-430000000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-153000000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-131000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	597000000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3147000000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3147000000	USD
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3278000000	USD
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3278000000	USD
CY2018Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	2681000000	USD
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	2994000000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3147000000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3147000000	USD
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3278000000	USD
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3278000000	USD
CY2021	us-gaap	Nature Of Operations NatureOfOperations	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-style:italic;font-weight:700;line-height:120%">Nature of Operations</span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">Fifth Third Bancorp, an Ohio corporation, conducts its principal lending, deposit gathering, transaction processing and service advisory activities through its banking and non-banking subsidiaries from banking centers located throughout the Midwestern and Southeastern regions of the United States as well as through other offices, telephone sales, the internet and mobile applications.</span></div>
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.</span></div>
CY2021Q4	us-gaap	Financing Receivable Threshold Period Past Due FinancingReceivableThresholdPeriodPastDue	P180D
CY2021Q4	us-gaap	Financing Receivable Threshold Period Past Due Writeoff FinancingReceivableThresholdPeriodPastDueWriteoff	P120D
CY2021Q4	us-gaap	Financing Receivable Threshold Period Past Due Writeoff FinancingReceivableThresholdPeriodPastDueWriteoff	P120D
CY2021Q4	us-gaap	Financing Receivable Threshold Period Past Due Writeoff FinancingReceivableThresholdPeriodPastDueWriteoff	P120D
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Policy For Uncollectible Amounts FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-style:italic;font-weight:700;line-height:120%">ALLL</span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">The Bancorp disaggregates its portfolio loans and leases into portfolio segments for purposes of determining the ALLL. The Bancorp’s portfolio segments include commercial, residential mortgage and consumer. The Bancorp further disaggregates its portfolio segments into classes for purposes of monitoring and assessing credit quality based on certain risk characteristics. Classes within the commercial portfolio segment include commercial and industrial, commercial mortgage owner-occupied, commercial mortgage nonowner-occupied, commercial construction and commercial leasing. The residential mortgage portfolio segment is also considered a class. Classes within the consumer portfolio segment include home equity, indirect secured consumer, credit card and other consumer loans. For an analysis of the Bancorp’s ALLL by portfolio segment and credit quality information by class, refer to Note 6.</span></div><div style="text-align:justify;text-indent:18pt"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">The Bancorp maintains the ALLL to absorb the amount of credit losses that are expected to be incurred over the remaining contractual terms of the related loans and leases. Contractual terms are adjusted for expected prepayments but are not extended for expected extensions, </span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">renewals or modifications except in circumstances where the Bancorp reasonably expects to execute a TDR with the borrower or where certain extension or renewal options are embedded in the original contract and not unconditionally cancellable by the Bancorp.</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">Accrued interest receivable on loans is presented in the Consolidated Financial Statements as a component of other assets. When accrued interest is deemed to be uncollectible (typically when a loan is placed on nonaccrual status), interest income is reversed. The Bancorp follows established policies for placing loans on nonaccrual status, so uncollectible accrued interest receivable is reversed in a timely manner. As a result, the Bancorp has elected not to measure an allowance for credit losses for accrued interest receivable. Refer to the Portfolio Loans and Leases section for additional information.</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">Credit losses are charged and recoveries are credited to the ALLL. The ALLL is maintained at a level the Bancorp considers to be adequate and is based on ongoing quarterly assessments and evaluations of the collectability of loans and leases, including historical credit loss experience, current and forecasted market and economic conditions and consideration of various qualitative factors that, in management’s judgment, deserve consideration in estimating credit losses. Provisions for credit losses are recorded for the amounts necessary to adjust the ALLL to the Bancorp’s current estimate of expected credit losses on portfolio loans and leases.</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">The Bancorp’s methodology for determining the ALLL includes an estimate of expected credit losses on a collective basis for groups of loans and leases with similar risk characteristics and specific allowances for loans and leases which are individually evaluated.</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:9.5pt;font-weight:400;line-height:120%">Larger commercial loans and leases included within aggregate borrower relationship balances exceeding $1 million that exhibit probable or observed credit weaknesses, as well as loans that have been modified in a TDR, are individually evaluated for an ALLL. The Bancorp considers the current value of collateral, credit quality of any guarantees, the guarantor’s liquidity and willingness to cooperate, the loan structure and other factors when determining the amount of ALLL. Other factors may include the borrower’s susceptibility to risks presented by the forecasted macroeconomic environment, the industry and geographic region of the borrower, size and financial condition of the borrower, cash flow and leverage of the borrower and the Bancorp’s evaluation of the borrower’s management. When loans and leases are individually evaluated, allowances are determined based on management’s estimate of the borrower’s ability to repay the loan or lease given the availability of collateral and other sources of cash flow, as well as an evaluation of legal options available to the Bancorp. Allowances for individually evaluated loans and leases that are collateral-dependent are measured based on the fair value of the underlying collateral, less expected costs to sell where applicable. Individually evaluated loans and leases that are not collateral-dependent are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate. The Bancorp evaluates the collectability of both principal and interest when assessing the need for a loss accrual. Specific allowances on individually evaluated commercial loans and leases, including TDRs, are reviewed quarterly and adjusted as necessary based on changing borrower and/or collateral conditions and actual collection and charge-off experience.</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:9.5pt;font-weight:400;line-height:120%">Consumer and residential mortgage loans that have been modified in a TDR are individually evaluated for an ALLL. Allowances for individually evaluated loans that are collateral-dependent are typically measured based on the fair value of the underlying collateral, less expected costs to sell where applicable. Individually evaluated loans that are not collateral-dependent are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate and a modeled expected credit loss amount. The Bancorp evaluates the collectability of both principal and interest when assessing the need for a loss accrual. Specific allowances on individually evaluated consumer and residential mortgage loans are reviewed quarterly and adjusted as necessary based on changing borrower and/or collateral conditions and actual collection and charge-off experience.</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:9.5pt;font-weight:400;line-height:120%">Expected credit losses are estimated on a collective basis for loans and leases that are not individually evaluated. These include commercial loans and leases that do not meet the criteria for individual evaluation as well as homogeneous loans and leases in the residential mortgage and consumer portfolio segments. For collectively evaluated loans and leases, the Bancorp uses models to forecast expected credit losses based on the probability of a loan or lease defaulting, the expected balance at the estimated date of default and the expected loss percentage given a default. The estimate of the expected balance at the time of default considers prepayments and, for loans with available credit, expected utilization rates. The Bancorp’s expected credit loss models were developed based on historical credit loss experience and observations of migration patterns for various credit risk characteristics (such as internal credit risk grades, external credit ratings or scores, delinquency status, loan-to-value trends, etc.) over time, with those observations evaluated in the context of concurrent macroeconomic conditions. The Bancorp developed its models from historical observations capturing a full economic cycle when possible.</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:9.5pt;font-weight:400;line-height:120%">The Bancorp’s expected credit loss models consider historical credit loss experience, current market and economic conditions, and forecasted changes in market and economic conditions if such forecasts are considered reasonable and supportable. Generally, the Bancorp considers its forecasts to be reasonable and supportable for a period of up to three years from the estimation date. For periods beyond the reasonable and supportable forecast period, expected credit losses are estimated by reverting to historical loss information without adjustment for changes in economic conditions. This reversion is phased in over a two-year period. The Bancorp evaluates the length of its reasonable and supportable forecast period, its reversion period and reversion methodology at least annually, or more often if warranted by economic conditions or other circumstances.</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:9.5pt;font-weight:400;line-height:120%">The Bancorp also considers qualitative factors in determining the ALLL. Qualitative factors are used to capture characteristics in the portfolio that impact expected credit losses but that are not fully captured within the Bancorp’s expected credit loss models. These include adjustments </span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">for changes in policies or procedures in underwriting, monitoring or collections, lending and risk management personnel and results of internal audit and quality control reviews. These may also include adjustments, when deemed necessary, for specific idiosyncratic risks such as geopolitical events, natural disasters and their effects on regional borrowers, and changes in product structures. Qualitative factors may also be used to address the impacts of unforeseen events on key inputs and assumptions within the Bancorp’s expected credit loss models, such as the reasonable and supportable forecast period, changes to historical loss information or changes to the reversion period or methodology.</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:9.5pt;font-weight:400;line-height:120%">When evaluating the adequacy of allowances, consideration is also given to regional geographic concentrations and the closely associated effect changing economic conditions have on the Bancorp’s customers.</span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-style:italic;font-weight:400;line-height:120%">ALLL </span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">The Bancorp maintained the ALLL to absorb probable loan and lease losses inherent in its portfolio segments. The ALLL was maintained at a level the Bancorp considered to be adequate and was based on ongoing quarterly assessments and evaluations of the collectability and historical loss experience of loans and leases. Credit losses were charged and recoveries were credited to the ALLL. Provisions for loan and lease losses were based on the Bancorp’s review of the historical credit loss experience and such factors that, in management’s judgment, deserved consideration under existing economic conditions in estimating probable credit losses.</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:9.5pt;font-weight:400;line-height:120%">The Bancorp’s methodology for determining the ALLL required significant management judgment and was based on historical loss rates, current credit grades, specific allocation on loans modified in a TDR and impaired commercial credits above specified thresholds and other qualitative adjustments. Allowances on individual commercial loans and leases, TDRs and historical loss rates were reviewed quarterly and adjusted as necessary based on changing borrower and/or collateral conditions and actual collection and charge-off experience. An unallocated allowance was maintained to recognize the imprecision in estimating and measuring losses when evaluating allowances for pools of loans and leases.</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:9.5pt;font-weight:400;line-height:120%">Larger commercial loans and leases included within aggregate borrower relationship balances exceeding $1 million that exhibited probable or observed credit weaknesses, as well as loans that had been modified in a TDR, were subject to individual review for impairment. The Bancorp considered the current value of collateral, credit quality of any guarantees, the guarantor’s liquidity and willingness to cooperate, the loan or lease structure and other factors when evaluating whether an individual loan or lease was impaired. Other factors might include the industry and geographic region of the borrower, size and financial condition of the borrower, cash flow and leverage of the borrower and the Bancorp’s evaluation of the borrower’s management. When individual loans and leases were impaired, allowances were determined based on management’s estimate of the borrower’s ability to repay the loan or lease given the availability of collateral and other sources of cash flow, as well as an evaluation of legal options available to the Bancorp. Allowances for impaired loans and leases were measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, fair value of the underlying collateral or readily observable secondary market values. The Bancorp evaluated the collectability of both principal and interest when assessing the need for a loss accrual.</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:9.5pt;font-weight:400;line-height:120%">Historical credit loss rates were applied to commercial loans and leases that were not impaired or were impaired, but smaller than the established threshold of $1 million and thus not subject to specific allowance allocations. The loss rates were derived from migration analyses for several portfolio stratifications, which tracked the historical net charge-off experience sustained on loans and leases according to their </span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9.5pt;font-weight:400;line-height:120%">internal risk grade. The risk grading system utilized for allowance analysis purposes encompassed ten categories, which were based on regulatory guidance for credit risk systems.</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:9.5pt;font-weight:400;line-height:120%">Homogenous loans in the residential mortgage and consumer portfolio segments were not individually risk graded. Rather, standard credit scoring systems and delinquency monitoring were used to assess credit risks and allowances were established based on the expected net charge-offs. Loss rates were based on the trailing twelve-month net charge-off history by loan category. Historical loss rates were adjusted for certain prescriptive and qualitative factors that, in management’s judgment, were necessary to reflect losses inherent in the portfolio. The prescriptive loss rate factors included adjustments for delinquency trends, LTV trends, refreshed FICO score trends and product mix.</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:9.5pt;font-weight:400;line-height:120%">The Bancorp also considered qualitative factors in determining the ALLL. These included adjustments for changes in policies or procedures in underwriting, monitoring or collections, economic conditions, portfolio mix, lending and risk management personnel, results of internal audit and quality control reviews, collateral values, geographic concentrations, estimated loss emergence period and specific portfolio loans backed by enterprise valuations and private equity sponsors. The Bancorp considered home price index trends in its footprint and the volatility of collateral valuation trends when determining the collateral value qualitative factor.</span></div>
CY2021	fitb	Defined Benefit Plan Net Gain Loss In Excess Of Projected Benefit Obligation Percentage DefinedBenefitPlanNetGainLossInExcessOfProjectedBenefitObligationPercentage	0.10
CY2021Q4	fitb	Impaired Financing Receivable Excluding Accrued Interest Threshold Amount ImpairedFinancingReceivableExcludingAccruedInterestThresholdAmount	1000000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	465000000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	825000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1441000000	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	607000000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	491000000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	726000000	USD
CY2021	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	447000000	USD
CY2020	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	926000000	USD
CY2019	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	211000000	USD
CY2021	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	49000000	USD
CY2020	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	49000000	USD
CY2019	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	37000000	USD
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	8000000	USD
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	12000000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	29000000	USD
CY2021	fitb	Transfer Of Loans Held For Sale To Other Real Estate Owned TransferOfLoansHeldForSaleToOtherRealEstateOwned	0	USD
CY2020	fitb	Transfer Of Loans Held For Sale To Other Real Estate Owned TransferOfLoansHeldForSaleToOtherRealEstateOwned	2000000	USD
CY2019	fitb	Transfer Of Loans Held For Sale To Other Real Estate Owned TransferOfLoansHeldForSaleToOtherRealEstateOwned	0	USD
CY2021	fitb	Property And Equipment Transferred To Other Real Estate Owned PropertyAndEquipmentTransferredToOtherRealEstateOwned	21000000	USD
CY2020	fitb	Property And Equipment Transferred To Other Real Estate Owned PropertyAndEquipmentTransferredToOtherRealEstateOwned	2000000	USD
CY2019	fitb	Property And Equipment Transferred To Other Real Estate Owned PropertyAndEquipmentTransferredToOtherRealEstateOwned	30000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	66000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	47000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	76000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	35000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	106000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	22000000	USD
CY2021	fitb	Right Of Use Assets Obtain In Exchange For Liabilities RightOfUseAssetsObtainInExchangeForLiabilities	0	USD
CY2020	fitb	Right Of Use Assets Obtain In Exchange For Liabilities RightOfUseAssetsObtainInExchangeForLiabilities	0	USD
CY2019	fitb	Right Of Use Assets Obtain In Exchange For Liabilities RightOfUseAssetsObtainInExchangeForLiabilities	509000000	USD
CY2021	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2020	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2019	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	197000000	USD
CY2021	fitb	Dividend Received From Nonbank Companies And Related Subsidiaries DividendReceivedFromNonbankCompaniesAndRelatedSubsidiaries	3000000000	USD
CY2020	fitb	Dividend Received From Nonbank Companies And Related Subsidiaries DividendReceivedFromNonbankCompaniesAndRelatedSubsidiaries	1300000000	USD
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	36941000000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1313000000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	144000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	38110000000	USD
CY2021Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	8000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	8000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	34982000000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2568000000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	37000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	37513000000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	11000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	11000000	USD
CY2021Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	512000000	USD
CY2020Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	560000000	USD
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	376000000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	313000000	USD
CY2021Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	82000000	USD
CY2020Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	87000000	USD
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	34000000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	47000000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	60000000	USD
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	19000000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	2000000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	50000000	USD
CY2021	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	19000000	USD
CY2020	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	0	USD
CY2019	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	1000000	USD
CY2021	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	-4000000	USD
CY2020	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	45000000	USD
CY2019	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	9000000	USD
CY2021	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	-2000000	USD
CY2020	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	2000000	USD
CY2019	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	3000000	USD
CY2021	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	-3000000	USD
CY2020	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	0	USD
CY2019	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	0	USD
CY2021	fitb	Total Trading Securities Gains Losses TotalTradingSecuritiesGainsLosses	-5000000	USD
CY2020	fitb	Total Trading Securities Gains Losses TotalTradingSecuritiesGainsLosses	2000000	USD
CY2019	fitb	Total Trading Securities Gains Losses TotalTradingSecuritiesGainsLosses	3000000	USD
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	7000000	USD
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	10000000	USD
CY2019	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	5000000	USD
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-7000000	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	7000000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	26000000	USD
CY2021	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	0	USD
CY2020	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	17000000	USD
CY2019	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	31000000	USD
CY2021	fitb	Total Available For Sale And Trading Securities Gains Losses TotalAvailableForSaleAndTradingSecuritiesGainsLosses	-9000000	USD
CY2020	fitb	Total Available For Sale And Trading Securities Gains Losses TotalAvailableForSaleAndTradingSecuritiesGainsLosses	64000000	USD
CY2019	fitb	Total Available For Sale And Trading Securities Gains Losses TotalAvailableForSaleAndTradingSecuritiesGainsLosses	43000000	USD
CY2021	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	19000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	11200000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	11000000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	984000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1003000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	3000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	3000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	13262000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	13756000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	3000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	3000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	11951000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	12466000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	0	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	0	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	10225000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	10366000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	2000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	2000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	519000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	519000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount	0	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	0	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	36941000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	38110000000	USD
CY2021Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	8000000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	8000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	7743000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	106000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	952000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	38000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	8695000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	144000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1336000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	20000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	604000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	17000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1940000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	37000000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	4415000000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	4741000000	USD
CY2021Q4	fitb	Loans Receivable Net Commercial And Industrial LoansReceivableNetCommercialAndIndustrial	51659000000	USD
CY2020Q4	fitb	Loans Receivable Net Commercial And Industrial LoansReceivableNetCommercialAndIndustrial	49665000000	USD
CY2021Q4	fitb	Loans Receivable Net Commercial Mortgage LoansReceivableNetCommercialMortgage	10316000000	USD
CY2020Q4	fitb	Loans Receivable Net Commercial Mortgage LoansReceivableNetCommercialMortgage	10602000000	USD
CY2021Q4	fitb	Loans Receivable Net Commercial Construction LoansReceivableNetCommercialConstruction	5241000000	USD
CY2020Q4	fitb	Loans Receivable Net Commercial Construction LoansReceivableNetCommercialConstruction	5815000000	USD
CY2021Q4	fitb	Leases Receivable Net Commercial Lease Financing LeasesReceivableNetCommercialLeaseFinancing	3052000000	USD
CY2020Q4	fitb	Leases Receivable Net Commercial Lease Financing LeasesReceivableNetCommercialLeaseFinancing	2915000000	USD
CY2021Q4	fitb	Loans And Leases Receivable Net Consumer Mortgage LoansAndLeasesReceivableNetConsumerMortgage	16397000000	USD
CY2020Q4	fitb	Loans And Leases Receivable Net Consumer Mortgage LoansAndLeasesReceivableNetConsumerMortgage	15928000000	USD
CY2021Q4	fitb	Loans And Leases Receivable Net Consumer Home Equity LoansAndLeasesReceivableNetConsumerHomeEquity	4084000000	USD
CY2020Q4	fitb	Loans And Leases Receivable Net Consumer Home Equity LoansAndLeasesReceivableNetConsumerHomeEquity	5183000000	USD
CY2021Q4	fitb	Loans Leases Receivable Consumer Installments LoansLeasesReceivableConsumerInstallments	16783000000	USD
CY2020Q4	fitb	Loans Leases Receivable Consumer Installments LoansLeasesReceivableConsumerInstallments	13653000000	USD
CY2021Q4	fitb	Loans And Leases Receivable Net Consumer Revolving Credit Card LoansAndLeasesReceivableNetConsumerRevolvingCreditCard	1766000000	USD
CY2020Q4	fitb	Loans And Leases Receivable Net Consumer Revolving Credit Card LoansAndLeasesReceivableNetConsumerRevolvingCreditCard	2007000000	USD
CY2021Q4	fitb	Loans And Leases Receivable Net Consumer Revolving Other LoansAndLeasesReceivableNetConsumerRevolvingOther	2752000000	USD
CY2020Q4	fitb	Loans And Leases Receivable Net Consumer Revolving Other LoansAndLeasesReceivableNetConsumerRevolvingOther	3014000000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	112050000000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	108782000000	USD
CY2021Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	244000000	USD
CY2020Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	280000000	USD
CY2021Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	498000000	USD
CY2020Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	251000000	USD
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	332000000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	350000000	USD
CY2021Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged For Federal Home Loan Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt	15300000000	USD
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged For Federal Home Loan Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt	15500000000	USD
CY2021Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged As Collateral PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral	50900000000	USD
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged As Collateral PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral	37800000000	USD
CY2021Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	116465000000	USD
CY2020Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	113523000000	USD
CY2021Q4	us-gaap	Delinquent Amount At End Of Period On Loans Managed And Securitized DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritized	117000000	USD
CY2020Q4	us-gaap	Delinquent Amount At End Of Period On Loans Managed And Securitized DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritized	163000000	USD
CY2021	fitb	Net Chargeoffs NetChargeoffs	174000000	USD
CY2020	fitb	Net Chargeoffs NetChargeoffs	471000000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	4415000000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	4741000000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	112050000000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	108782000000	USD
CY2021Q4	us-gaap	Leveraged Leases Balance Sheet Investment In Leveraged Leases Net LeveragedLeasesBalanceSheetInvestmentInLeveragedLeasesNet	285000000	USD
CY2020Q4	us-gaap	Leveraged Leases Balance Sheet Investment In Leveraged Leases Net LeveragedLeasesBalanceSheetInvestmentInLeveragedLeasesNet	323000000	USD
CY2021	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	42000000	USD
CY2020	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	64000000	USD
CY2019	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	88000000	USD
CY2021	us-gaap	Sales Type Lease Lease Income SalesTypeLeaseLeaseIncome	42000000	USD
CY2020	us-gaap	Sales Type Lease Lease Income SalesTypeLeaseLeaseIncome	28000000	USD
CY2019	us-gaap	Sales Type Lease Lease Income SalesTypeLeaseLeaseIncome	13000000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	2453000000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	344000000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	170000000	USD
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-387000000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1892000000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1202000000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	611000000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	140000000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1079000000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	2453000000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1103000000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	510000000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	141000000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	468000000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1202000000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	164000000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	1728000000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1892000000	USD
CY2021Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	1352000000	USD
CY2021Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	110544000000	USD
CY2021Q4	fitb	Financing Receivable After Allowance For Credit Loss Excluding Residential Mortgage Loans Measured At Fair Value FinancingReceivableAfterAllowanceForCreditLossExcludingResidentialMortgageLoansMeasuredAtFairValue	111896000000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	225000000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	2228000000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	2453000000	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	1863000000	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	106343000000	USD
CY2020Q4	fitb	Financing Receivable Purchased With Credit Deterioration FinancingReceivablePurchasedWithCreditDeterioration	415000000	USD
CY2020Q4	fitb	Financing Receivable After Allowance For Credit Loss Excluding Residential Mortgage Loans Measured At Fair Value FinancingReceivableAfterAllowanceForCreditLossExcludingResidentialMortgageLoansMeasuredAtFairValue	108621000000	USD
CY2021Q4	fitb	Financing Receivable Net Amount For Amortized Cost Basis FinancingReceivableNetAmountForAmortizedCostBasis	705000000	USD
CY2020Q4	fitb	Financing Receivable Net Amount For Amortized Cost Basis FinancingReceivableNetAmountForAmortizedCostBasis	1178000000	USD
CY2021Q4	fitb	Financing Receivable Nonaccrual With Related Allowance FinancingReceivableNonaccrualWithRelatedAllowance	304000000	USD
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	223000000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	527000000	USD
CY2020Q4	fitb	Financing Receivable Nonaccrual With Related Allowance FinancingReceivableNonaccrualWithRelatedAllowance	382000000	USD
CY2020Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	482000000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	864000000	USD
CY2021Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	84000000	USD
CY2020Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	136000000	USD
CY2021Q4	fitb	Line Of Credit Commitments LineOfCreditCommitments	121000000	USD
CY2021Q4	fitb	Letter Of Credit Commitments LetterOfCreditCommitments	66000000	USD
CY2020Q4	fitb	Line Of Credit Commitments LineOfCreditCommitments	67000000	USD
CY2020Q4	fitb	Letter Of Credit Commitments LetterOfCreditCommitments	72000000	USD
CY2021	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	10882	loan
CY2021	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	450000000	USD
CY2021	us-gaap	Financing Receivable Change In Method Credit Loss Expense Reversal FinancingReceivableChangeInMethodCreditLossExpenseReversal	12000000	USD
CY2021	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	1000000	USD
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	6531	loan
CY2020	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	525000000	USD
CY2020	us-gaap	Financing Receivable Change In Method Credit Loss Expense Reversal FinancingReceivableChangeInMethodCreditLossExpenseReversal	22000000	USD
CY2020	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	8000000	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	7056	loan
CY2019	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	374000000	USD
CY2019	us-gaap	Financing Receivable Change In Method Credit Loss Expense Reversal FinancingReceivableChangeInMethodCreditLossExpenseReversal	-10000000	USD
CY2019	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	8000000	USD
CY2021	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	467	contract
CY2021	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	41000000	USD
CY2020	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	457	contract
CY2020	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	43000000	USD
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	961	contract
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	66000000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3210000000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3072000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2120000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2088000000	USD
CY2021	us-gaap	Depreciation Nonproduction DepreciationNonproduction	270000000	USD
CY2020	us-gaap	Depreciation Nonproduction DepreciationNonproduction	256000000	USD
CY2019	us-gaap	Depreciation Nonproduction DepreciationNonproduction	255000000	USD
CY2021	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	7000000	USD
CY2020	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	30000000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	28000000	USD
CY2021Q4	us-gaap	Net Investment In Lease NetInvestmentInLease	616000000	USD
CY2020Q4	us-gaap	Net Investment In Lease NetInvestmentInLease	777000000	USD
CY2021Q4	fitb	Net Investment In Lease Accumulated Amortization NetInvestmentInLeaseAccumulatedAmortization	304000000	USD
CY2020Q4	fitb	Net Investment In Lease Accumulated Amortization NetInvestmentInLeaseAccumulatedAmortization	290000000	USD
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	152000000	USD
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	156000000	USD
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	151000000	USD
CY2021	us-gaap	Depreciation Depreciation	124000000	USD
CY2020	us-gaap	Depreciation Depreciation	126000000	USD
CY2019	us-gaap	Depreciation Depreciation	122000000	USD
CY2021	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	155000000	USD
CY2020	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	161000000	USD
CY2021	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	25000000	USD
CY2020	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	7000000	USD
CY2019	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	3000000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	138000000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	114000000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	76000000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	48000000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	26000000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	27000000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	429000000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	427000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	423000000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	145000000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	129000000	USD
CY2021Q4	fitb	Right Of Use Assets RightOfUseAssets	572000000	USD
CY2020Q4	fitb	Right Of Use Assets RightOfUseAssets	552000000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	520000000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	527000000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	149000000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	130000000	USD
CY2021Q4	fitb	Total Lease Liabilities TotalLeaseLiabilities	669000000	USD
CY2020Q4	fitb	Total Lease Liabilities TotalLeaseLiabilities	657000000	USD
CY2021Q4	fitb	Operating Lease Right Of Use Asset Accumulated Amortization OperatingLeaseRightOfUseAssetAccumulatedAmortization	198000000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	47000000	USD
CY2020Q4	fitb	Operating Lease Right Of Use Asset Accumulated Amortization OperatingLeaseRightOfUseAssetAccumulatedAmortization	152000000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	29000000	USD
CY2021	fitb	Finance Lease Cost FinanceLeaseCost	22000000	USD
CY2020	fitb	Finance Lease Cost FinanceLeaseCost	14000000	USD
CY2019	fitb	Finance Lease Cost FinanceLeaseCost	7000000	USD
CY2021	fitb	Operating Lease Costs OperatingLeaseCosts	110000000	USD
CY2020	fitb	Operating Lease Costs OperatingLeaseCosts	137000000	USD
CY2019	fitb	Operating Lease Costs OperatingLeaseCosts	124000000	USD
CY2021	us-gaap	Lease Cost LeaseCost	132000000	USD
CY2020	us-gaap	Lease Cost LeaseCost	151000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	131000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	87000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	21000000	USD
CY2021Q4	fitb	Lease Liability Payments Due Year One LeaseLiabilityPaymentsDueYearOne	108000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	80000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	18000000	USD
CY2021Q4	fitb	Lease Liability Payments Due Year Two LeaseLiabilityPaymentsDueYearTwo	98000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	72000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	18000000	USD
CY2021Q4	fitb	Lease Liability Payments Due Year Three LeaseLiabilityPaymentsDueYearThree	90000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	64000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	12000000	USD
CY2021Q4	fitb	Lease Liability Payments Due Year Four LeaseLiabilityPaymentsDueYearFour	76000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	55000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	7000000	USD
CY2021Q4	fitb	Lease Liability Payments Due Year Five LeaseLiabilityPaymentsDueYearFive	62000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	238000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	111000000	USD
CY2021Q4	fitb	Lease Liability Payments Due After Year Five LeaseLiabilityPaymentsDueAfterYearFive	349000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	596000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	187000000	USD
CY2021Q4	fitb	Lease Liability Payments Due LeaseLiabilityPaymentsDue	783000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	76000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	38000000	USD
CY2021Q4	fitb	Lease Liability Undiscounted Excess Amount LeaseLiabilityUndiscountedExcessAmount	114000000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	520000000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	149000000	USD
CY2021Q4	fitb	Total Lease Liabilities1 TotalLeaseLiabilities1	669000000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y11M1D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y21D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P14Y8M12D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P12Y11M4D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0288
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0305
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0274
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0239
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	88000000	USD
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4000000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	3000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	91000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	97000000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1000000	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	16000000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	11000000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	5000000	USD
CY2021	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	2000000	USD
CY2020	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	3000000	USD
CY2019	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	5000000	USD
CY2019Q4	us-gaap	Goodwill Gross GoodwillGross	5217000000	USD
CY2019Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	965000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4252000000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	28000000	USD
CY2020	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	22000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	4258000000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	256000000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	4514000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	331000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	175000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	156000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	273000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	134000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	139000000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	47000000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	55000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	54000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	41000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	32000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	24000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	17000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	11000000	USD
CY2020	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	315000000	USD
CY2021	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	16900000000	USD
CY2020	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	11827000000	USD
CY2019	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	7781000000	USD
CY2021	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	285000000	USD
CY2019	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	175000000	USD
CY2021	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	247000000	USD
CY2020	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	263000000	USD
CY2019	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	267000000	USD
CY2020Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	656000000	USD
CY2019Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	993000000	USD
CY2021	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	223000000	USD
CY2020	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	184000000	USD
CY2021	fitb	Servicing Asset At Fair Value Purchases ServicingAssetAtFairValuePurchases	381000000	USD
CY2020	fitb	Servicing Asset At Fair Value Purchases ServicingAssetAtFairValuePurchases	44000000	USD
CY2021	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	142000000	USD
CY2020	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-311000000	USD
CY2021	us-gaap	Servicing Asset At Fair Value Other Changes In Fair Value ServicingAssetAtFairValueOtherChangesInFairValue	-281000000	USD
CY2020	us-gaap	Servicing Asset At Fair Value Other Changes In Fair Value ServicingAssetAtFairValueOtherChangesInFairValue	-254000000	USD
CY2021Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	1121000000	USD
CY2020Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	656000000	USD
CY2021	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	-2000000	USD
CY2020	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	2000000	USD
CY2019	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	3000000	USD
CY2021	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-123000000	USD
CY2020	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	307000000	USD
CY2019	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	221000000	USD
CY2021	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	142000000	USD
CY2020	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-311000000	USD
CY2019	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-203000000	USD
CY2021	fitb	Loans Serviced For Others LoansServicedForOthers	89200000000	USD
CY2020	fitb	Loans Serviced For Others LoansServicedForOthers	68800000000	USD
CY2021Q4	fitb	Variation Margin Payments Derivative Assets VariationMarginPaymentsDerivativeAssets	771000000	USD
CY2020Q4	fitb	Variation Margin Payments Derivative Assets VariationMarginPaymentsDerivativeAssets	1100000000	USD
CY2021Q4	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Assets DerivativeCreditRiskValuationAdjustmentDerivativeAssets	20000000	USD
CY2020Q4	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Assets DerivativeCreditRiskValuationAdjustmentDerivativeAssets	42000000	USD
CY2021Q4	fitb	Variation Margin Payments Derivative Liabilities VariationMarginPaymentsDerivativeLiabilities	570000000	USD
CY2020Q4	fitb	Variation Margin Payments Derivative Liabilities VariationMarginPaymentsDerivativeLiabilities	1100000000	USD
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	2908000000	USD
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	2013000000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	2919000000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1072000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	0	USD
CY2021Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	3800000000	USD
CY2020Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	3400000000	USD
CY2020Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	3396000000	USD
CY2021Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	3780000000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	2896000000	USD
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	837000000	USD
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	548000000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	1511000000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	2013000000	USD
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	837000000	USD
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	712000000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	464000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	2862000000	USD
CY2020Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	621000000	USD
CY2020Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	755000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	1486000000	USD
CY2021Q4	fitb	Interest And Fees Receivable InterestAndFeesReceivable	465000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1072000000	USD
CY2020Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	621000000	USD
CY2020Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	221000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	230000000	USD
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	2908000000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	2919000000	USD
CY2021Q4	fitb	Accounts Receivable Net And Due From Customer Acceptances AccountsReceivableNetAndDueFromCustomerAcceptances	2560000000	USD
CY2020Q4	fitb	Accounts Receivable Net And Due From Customer Acceptances AccountsReceivableNetAndDueFromCustomerAcceptances	2121000000	USD
CY2021Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	2041000000	USD
CY2020Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	2003000000	USD
CY2021Q4	us-gaap	Advances To Affiliate AdvancesToAffiliate	2022000000	USD
CY2020Q4	us-gaap	Advances To Affiliate AdvancesToAffiliate	1872000000	USD
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CY2020	fitb	Definedbenefitplansamountrecognizedinperiodicbenefitcostandaccumulatedothercomprehensiveincome Definedbenefitplansamountrecognizedinperiodicbenefitcostandaccumulatedothercomprehensiveincome	14000000	USD
CY2019	fitb	Definedbenefitplansamountrecognizedinperiodicbenefitcostandaccumulatedothercomprehensiveincome Definedbenefitplansamountrecognizedinperiodicbenefitcostandaccumulatedothercomprehensiveincome	4000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	152000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	173000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0285
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0226
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0305
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0226
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0305
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0410
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0243
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0264
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0550
CY2021Q4	fitb	Defined Benefit Plan Effect25 Basis Point Decrease In Expected Rate Return And Discount Rate DefinedBenefitPlanEffect25BasisPointDecreaseInExpectedRateReturnAndDiscountRate	1000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	2000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	17000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	16000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	15000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	17000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	14000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	59000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2020Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2021	us-gaap	Trustee Fees TrusteeFees	0	USD
CY2021	fitb	Other Comprehensive Income Loss Other Adjustments After Tax OtherComprehensiveIncomeLossOtherAdjustmentsAfterTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-1826000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-432000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1394000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1394000000	USD
CY2020	fitb	Other Comprehensive Income Loss Other Adjustments After Tax OtherComprehensiveIncomeLossOtherAdjustmentsAfterTax	-4000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	1836000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	427000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1409000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1409000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	1696000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	392000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1304000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1304000000	USD
CY2019Q2	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	100000000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	48800000	shares
CY2021Q4	fitb	Share Based Compensation Arrangement By Share Based Payment Award Potential Percentage Dilution To Common Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPotentialPercentageDilutionToCommonShares	0.10
CY2021Q4	fitb	Share Based Compensation Arrangement By Share Based Payment Award Outstanding Award As Percentage Of Shares Issued ShareBasedCompensationArrangementByShareBasedPaymentAwardOutstandingAwardAsPercentageOfSharesIssued	0.03
CY2021Q4	fitb	Annual Performance Hurdle AnnualPerformanceHurdle	0.02
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CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	120000000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	123000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	132000000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	25000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	26000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	27000000	USD
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.29
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.24
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.32
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.032
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.032
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.033
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.009
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.015
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.026
CY2019	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	0	shares
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 Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	7000000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3000000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	7000000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	6000000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5000000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	11000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1000000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1000000	USD
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	9000000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	793000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	20.81
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1381000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	20.15
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	0
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Other Increases Decreases In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod	0	shares
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CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	148000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	23.99
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Other Increases Decreases In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod	0	shares
CY2020	fitb	Share Based Compensation Arrangements By Share Based Payment Award Options Assumed In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsAssumedInPeriodWeightedAverageExercisePrice	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Other Increases Decreases In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod	2120000	shares
CY2019	fitb	Share Based Compensation Arrangements By Share Based Payment Award Options Assumed In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsAssumedInPeriodWeightedAverageExercisePrice	19.34
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	384000	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	20.06
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	440000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.48
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	660000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.36
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	79000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	22.18
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	409000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	21.51
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	793000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	20.81
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1381000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	20.15
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	386000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	21.31
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	725000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	20.34
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1162000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	19.17
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	409000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	21.51
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y4M24D
CY2021Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	386000	shares
CY2021Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	21.31
CY2021	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P3Y2M12D
CY2021	fitb	Private Equity Investment Income PrivateEquityInvestmentIncome	81000000	USD
CY2020	fitb	Private Equity Investment Income PrivateEquityInvestmentIncome	75000000	USD
CY2019	fitb	Private Equity Investment Income PrivateEquityInvestmentIncome	65000000	USD
CY2021	fitb	Gain Loss On Contract Sales GainLossOnContractSales	62000000	USD
CY2020	fitb	Gain Loss On Contract Sales GainLossOnContractSales	2000000	USD
CY2019	fitb	Gain Loss On Contract Sales GainLossOnContractSales	0	USD
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	61000000	USD
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	63000000	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	60000000	USD
CY2021	fitb	Fees And Commissions Cards FeesAndCommissionsCards	50000000	USD
CY2020	fitb	Fees And Commissions Cards FeesAndCommissionsCards	44000000	USD
CY2019	fitb	Fees And Commissions Cards FeesAndCommissionsCards	58000000	USD
CY2021	fitb	Income From Termination And Taxable Receivable Agreement Payment IncomeFromTerminationAndTaxableReceivableAgreementPayment	46000000	USD
CY2020	fitb	Income From Termination And Taxable Receivable Agreement Payment IncomeFromTerminationAndTaxableReceivableAgreementPayment	74000000	USD
CY2019	fitb	Income From Termination And Taxable Receivable Agreement Payment IncomeFromTerminationAndTaxableReceivableAgreementPayment	346000000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	30000000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	12000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	12000000	USD
CY2021	fitb	Banking Center Income BankingCenterIncome	23000000	USD
CY2020	fitb	Banking Center Income BankingCenterIncome	20000000	USD
CY2019	fitb	Banking Center Income BankingCenterIncome	22000000	USD
CY2021	fitb	Loan Fees LoanFees	17000000	USD
CY2020	fitb	Loan Fees LoanFees	20000000	USD
CY2019	fitb	Loan Fees LoanFees	23000000	USD
CY2021	fitb	Insurance Income InsuranceIncome	7000000	USD
CY2020	fitb	Insurance Income InsuranceIncome	20000000	USD
CY2019	fitb	Insurance Income InsuranceIncome	19000000	USD
CY2021	fitb	Gain Loss On Swap Associated With Sale Visa GainLossOnSwapAssociatedWithSaleVisa	-86000000	USD
CY2020	fitb	Gain Loss On Swap Associated With Sale Visa GainLossOnSwapAssociatedWithSaleVisa	-103000000	USD
CY2019	fitb	Gain Loss On Swap Associated With Sale Visa GainLossOnSwapAssociatedWithSaleVisa	-107000000	USD
CY2021	fitb	Gain Loss On Sale Of Assets And Impairment Of Long Lived Assets GainLossOnSaleOfAssetsAndImpairmentOfLongLivedAssets	-4000000	USD
CY2020	fitb	Gain Loss On Sale Of Assets And Impairment Of Long Lived Assets GainLossOnSaleOfAssetsAndImpairmentOfLongLivedAssets	-31000000	USD
CY2019	fitb	Gain Loss On Sale Of Assets And Impairment Of Long Lived Assets GainLossOnSaleOfAssetsAndImpairmentOfLongLivedAssets	-23000000	USD
CY2021	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2020	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2019	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	562000000	USD
CY2021	us-gaap	Noninterest Income Other NoninterestIncomeOther	45000000	USD
CY2020	us-gaap	Noninterest Income Other NoninterestIncomeOther	15000000	USD
CY2019	us-gaap	Noninterest Income Other NoninterestIncomeOther	27000000	USD
CY2021	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	332000000	USD
CY2020	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	211000000	USD
CY2020	us-gaap	General Insurance Expense GeneralInsuranceExpense	15000000	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1064000000	USD
CY2021	us-gaap	Loan Processing Fee LoanProcessingFee	217000000	USD
CY2020	us-gaap	Loan Processing Fee LoanProcessingFee	162000000	USD
CY2019	us-gaap	Loan Processing Fee LoanProcessingFee	142000000	USD
CY2021	fitb	Federal Deposit Insurance Corporation Premium Expense And Other Taxes FederalDepositInsuranceCorporationPremiumExpenseAndOtherTaxes	114000000	USD
CY2020	fitb	Federal Deposit Insurance Corporation Premium Expense And Other Taxes FederalDepositInsuranceCorporationPremiumExpenseAndOtherTaxes	118000000	USD
CY2019	fitb	Federal Deposit Insurance Corporation Premium Expense And Other Taxes FederalDepositInsuranceCorporationPremiumExpenseAndOtherTaxes	81000000	USD
CY2021	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	79000000	USD
CY2020	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	75000000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	70000000	USD
CY2021	fitb	Noninterest Expense Operating Losses NoninterestExpenseOperatingLosses	69000000	USD
CY2020	fitb	Noninterest Expense Operating Losses NoninterestExpenseOperatingLosses	100000000	USD
CY2019	fitb	Noninterest Expense Operating Losses NoninterestExpenseOperatingLosses	102000000	USD
CY2021	us-gaap	Professional Fees ProfessionalFees	63000000	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	49000000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	70000000	USD
CY2021	fitb	Amortization Of Intangible Assets Excluding Operating Lease Intangible Assets AmortizationOfIntangibleAssetsExcludingOperatingLeaseIntangibleAssets	44000000	USD
CY2020	fitb	Amortization Of Intangible Assets Excluding Operating Lease Intangible Assets AmortizationOfIntangibleAssetsExcludingOperatingLeaseIntangibleAssets	48000000	USD
CY2019	fitb	Amortization Of Intangible Assets Excluding Operating Lease Intangible Assets AmortizationOfIntangibleAssetsExcludingOperatingLeaseIntangibleAssets	45000000	USD
CY2021	us-gaap	Postage Expense PostageExpense	37000000	USD
CY2020	us-gaap	Postage Expense PostageExpense	36000000	USD
CY2019	us-gaap	Postage Expense PostageExpense	38000000	USD
CY2021	us-gaap	Travel And Entertainment Expense TravelAndEntertainmentExpense	34000000	USD
CY2020	us-gaap	Travel And Entertainment Expense TravelAndEntertainmentExpense	27000000	USD
CY2019	us-gaap	Travel And Entertainment Expense TravelAndEntertainmentExpense	68000000	USD
CY2021	fitb	Donations Expense DonationsExpense	26000000	USD
CY2020	fitb	Donations Expense DonationsExpense	36000000	USD
CY2019	fitb	Donations Expense DonationsExpense	30000000	USD
CY2021	fitb	Recruitment And Education Expense RecruitmentAndEducationExpense	21000000	USD
CY2020	fitb	Recruitment And Education Expense RecruitmentAndEducationExpense	21000000	USD
CY2019	fitb	Recruitment And Education Expense RecruitmentAndEducationExpense	28000000	USD
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CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2419000000	USD
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CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	21000000	USD
CY2021	fitb	Net Income Loss Allocated To Common Stockholders Basic NetIncomeLossAllocatedToCommonStockholdersBasic	2652000000	USD
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CY2021Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Other Assumption SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInOtherAssumption	1000000	USD
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CY2021Q4	fitb	Sensitivity Analysis Of Increase In Fair Value Of Derivatives Impact Of Twenty Percent Changes In Assumed Loan Closing Rates SensitivityAnalysisOfIncreaseInFairValueOfDerivativesImpactOfTwentyPercentChangesInAssumedLoanClosingRates	2000000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	669000000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-74000000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	601000000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	180000000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	49000000	USD
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1065000000	USD
CY2021	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	5000000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1023000000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-393000000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	232000000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	242000000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	49000000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	669000000	USD
CY2020	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-269000000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	991000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-339000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	428000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	93000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	36000000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1023000000	USD
CY2019	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-338000000	USD
CY2021	fitb	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Change In Unrealized Gains Losses Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitiesChangeInUnrealizedGainsLossesIncludedInEarnings	5000000	USD
CY2020	fitb	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Change In Unrealized Gains Losses Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitiesChangeInUnrealizedGainsLossesIncludedInEarnings	-269000000	USD
CY2019	fitb	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Change In Unrealized Gains Losses Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitiesChangeInUnrealizedGainsLossesIncludedInEarnings	-338000000	USD
CY2021	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount	41000000	USD
CY2020	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount	23000000	USD
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CY2021	us-gaap	Equity Securities Without Readily Determinable Fair Value Downward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceAdjustmentAnnualAmount	3000000	USD
CY2020	us-gaap	Equity Securities Without Readily Determinable Fair Value Downward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceAdjustmentAnnualAmount	9000000	USD
CY2021Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Downward Price Adjustment Cumulative Amount EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceAdjustmentCumulativeAmount	24000000	USD
CY2021Q4	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Asset EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset	89000000	USD
CY2021	us-gaap	Embedded Derivative Loss On Embedded Derivative EmbeddedDerivativeLossOnEmbeddedDerivative	3000000	USD
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	unit_segment
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	4770000000	USD
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-377000000	USD
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	5147000000	USD
CY2021	fitb	Commercial Banking Revenue CommercialBankingRevenue	637000000	USD
CY2021	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	600000000	USD
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CY2021	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	-2000000	USD
CY2021	us-gaap	Noninterest Income NoninterestIncome	3118000000	USD
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2626000000	USD
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CY2021	us-gaap	Occupancy Net OccupancyNet	312000000	USD
CY2021	us-gaap	Equipment Expense EquipmentExpense	138000000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	137000000	USD
CY2021	us-gaap	Marketing Expense MarketingExpense	107000000	USD
CY2021	fitb	Card And Processing Expense CardAndProcessingExpense	89000000	USD
CY2021	fitb	Other Noninterest Expenses OtherNoninterestExpenses	951000000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	4748000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3517000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	747000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	2770000000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	4514000000	USD
CY2021Q4	us-gaap	Assets Net AssetsNet	211116000000	USD
CY2021	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	3000000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	4782000000	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1097000000	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	3685000000	USD
CY2020	fitb	Commercial Banking Revenue CommercialBankingRevenue	528000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	559000000	USD
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CY2020	us-gaap	Lease Income LeaseIncome	276000000	USD
CY2020	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	320000000	USD
CY2020	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	211000000	USD
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	62000000	USD
CY2020	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	2000000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	2830000000	USD
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2590000000	USD
CY2020	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	362000000	USD
CY2020	us-gaap	Occupancy Net OccupancyNet	350000000	USD
CY2020	us-gaap	Equipment Expense EquipmentExpense	130000000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	140000000	USD
CY2020	us-gaap	Marketing Expense MarketingExpense	104000000	USD
CY2020	fitb	Card And Processing Expense CardAndProcessingExpense	121000000	USD
CY2020	fitb	Other Noninterest Expenses OtherNoninterestExpenses	921000000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	4718000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1797000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	370000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1427000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	4258000000	USD
CY2020Q4	us-gaap	Assets Net AssetsNet	204680000000	USD
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	8000000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	4797000000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	471000000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	4326000000	USD
CY2019	fitb	Commercial Banking Revenue CommercialBankingRevenue	460000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	565000000	USD
CY2019	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	487000000	USD
CY2019	fitb	Card And Processing Revenue CardAndProcessingRevenue	360000000	USD
CY2019	us-gaap	Lease Income LeaseIncome	270000000	USD
CY2019	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	287000000	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1064000000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	40000000	USD
CY2019	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	3000000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	3536000000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2418000000	USD
CY2019	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	422000000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	332000000	USD
CY2019	us-gaap	Equipment Expense EquipmentExpense	129000000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	133000000	USD
CY2019	us-gaap	Marketing Expense MarketingExpense	162000000	USD
CY2019	fitb	Card And Processing Expense CardAndProcessingExpense	130000000	USD
CY2019	fitb	Other Noninterest Expenses OtherNoninterestExpenses	934000000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	4660000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3202000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	690000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2512000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4252000000	USD
CY2019Q4	us-gaap	Assets Net AssetsNet	169369000000	USD
CY2019	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	15000000	USD
CY2021	dei	Auditor Firm AuditorFirmId	34

Files In Submission

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2021 Q4 Form 10-K Financial Statement

#000003552722000119 Filed on February 25, 2022

Income Statement

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$FITB
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