XML 123 R190.htm IDEA: XBRL DOCUMENT v2.4.1.9
Carrying Amounts and Estimated Fair Values for Certain Financial Instruments (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Financial assets:        
Cash and due from banks $ 3,091us-gaap_CashAndDueFromBanks [1] $ 3,178us-gaap_CashAndDueFromBanks [1] $ 2,441us-gaap_CashAndDueFromBanks $ 2,663us-gaap_CashAndDueFromBanks
Held-to-maturity securities, amortized cost 187us-gaap_HeldToMaturitySecurities [2] 208us-gaap_HeldToMaturitySecurities [2]    
Other short-term investments 7,914us-gaap_OtherShortTermInvestments 5,116us-gaap_OtherShortTermInvestments    
Loans held for sale 1,261us-gaap_LoansReceivableHeldForSaleNet [3] 944us-gaap_LoansReceivableHeldForSaleNet [3]    
Portfolio loans and leases, net 88,762us-gaap_LoansAndLeasesReceivableNetReportedAmount 87,032us-gaap_LoansAndLeasesReceivableNetReportedAmount    
Other securities, fair value 22,408us-gaap_AvailableForSaleSecurities [4] 18,597us-gaap_AvailableForSaleSecurities [4]    
Held-to-maturity securities, fair value 187us-gaap_HeldToMaturitySecuritiesFairValue 208us-gaap_HeldToMaturitySecuritiesFairValue    
Financial liabilities:        
Deposits 101,712us-gaap_Deposits 99,275us-gaap_Deposits    
Federal funds purchased 144us-gaap_FederalFundsPurchased 284us-gaap_FederalFundsPurchased    
Other short-term borrowings 1,556us-gaap_OtherShortTermBorrowings 1,380us-gaap_OtherShortTermBorrowings    
Long-term debt 14,967us-gaap_LongTermDebt [1] 9,633us-gaap_LongTermDebt [1]    
Residential Mortgage        
Financial assets:        
Portfolio loans and leases at fair value 108us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialMortgageMember		 92us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialMortgageMember		    
Carrying (Reported) Amount, Fair Value Disclosure        
Financial assets:        
Cash and due from banks 3,091us-gaap_CashAndDueFromBanks
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 3,178us-gaap_CashAndDueFromBanks
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Other securities 600us-gaap_OtherMarketableSecuritiesCurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 751us-gaap_OtherMarketableSecuritiesCurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Held-to-maturity securities, amortized cost 187us-gaap_HeldToMaturitySecurities
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 208us-gaap_HeldToMaturitySecurities
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Other short-term investments 7,914us-gaap_OtherShortTermInvestments
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 5,116us-gaap_OtherShortTermInvestments
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Loans held for sale 700us-gaap_LoansReceivableHeldForSaleNet
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 54us-gaap_LoansReceivableHeldForSaleNet
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Portfolio loans and leases, net 88,654us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 86,940us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Unallocated Allowance for Loan and Lease Losses (106)fitb_UnallocatedAllowanceForLoanAndLeaseLosses
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 (110)fitb_UnallocatedAllowanceForLoanAndLeaseLosses
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Financial liabilities:        
Deposits 101,712us-gaap_Deposits
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 99,275us-gaap_Deposits
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Federal funds purchased 144us-gaap_FederalFundsPurchased
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 284us-gaap_FederalFundsPurchased
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Other short-term borrowings 1,556us-gaap_OtherShortTermBorrowings
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 1,380us-gaap_OtherShortTermBorrowings
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Long-term debt 14,967us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 9,633us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Commercial and Industrial Loans        
Financial assets:        
Portfolio loans and leases, net 40,092us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialAndIndustrialLoansMember		 38,549us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialAndIndustrialLoansMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Commercial Mortgage Loans        
Financial assets:        
Portfolio loans and leases, net 7,259us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialMortgageLoansMember		 7,854us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialMortgageLoansMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Commercial Construction        
Financial assets:        
Portfolio loans and leases, net 2,052us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember		 1,013us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Commercial Leases        
Financial assets:        
Portfolio loans and leases, net 3,675us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialLeasesMember		 3,572us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialLeasesMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Residential Mortgage        
Financial assets:        
Portfolio loans and leases, net 12,177us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialMortgageMember		 12,399us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialMortgageMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Home Equity        
Financial assets:        
Portfolio loans and leases, net 8,799us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_HomeEquityMember		 9,152us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_HomeEquityMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Automobile Loan Securitizations        
Financial assets:        
Portfolio loans and leases, net 12,004us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_AutomobileLoanMember		 11,961us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_AutomobileLoanMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Credit Card        
Financial assets:        
Portfolio loans and leases, net 2,297us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CreditCardReceivablesMember		 2,202us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CreditCardReceivablesMember		    
Carrying (Reported) Amount, Fair Value Disclosure | Other Consumer Loans and Leases        
Financial assets:        
Portfolio loans and leases, net 405us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= fitb_OtherConsumerLoansAndLeasesMember		 348us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= fitb_OtherConsumerLoansAndLeasesMember		    
Portion at Fair Value        
Financial assets:        
Loans held for sale 700us-gaap_LoansReceivableHeldForSaleNet
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 54us-gaap_LoansReceivableHeldForSaleNet
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Cash and due from banks, fair value 3,091us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 3,178us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Other securities, fair value 600us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 751us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Held-to-maturity securities, fair value 187us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 208us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Other Short Term Investments Fair Value Disclosure 7,914fitb_OtherShortTermInvestmentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 5,116fitb_OtherShortTermInvestmentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Portfolio loans and leases at fair value 89,041us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 86,562us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Financial liabilities:        
Deposits, fair value 101,715us-gaap_DepositsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 99,288us-gaap_DepositsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Federal funds purchased, fair value 144us-gaap_FederalFundsPurchasedFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 284us-gaap_FederalFundsPurchasedFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Other short-term borrowings, fair value 1,561us-gaap_ShorttermDebtFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 1,380us-gaap_ShorttermDebtFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Long term debt, fair value 15,648us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 10,222us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Portion at Fair Value | Commercial and Industrial Loans        
Financial assets:        
Portfolio loans and leases at fair value 40,781us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialAndIndustrialLoansMember		 39,804us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialAndIndustrialLoansMember		    
Portion at Fair Value | Commercial Mortgage Loans        
Financial assets:        
Portfolio loans and leases at fair value 6,878us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialMortgageLoansMember		 7,430us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialMortgageLoansMember		    
Portion at Fair Value | Commercial Construction        
Financial assets:        
Portfolio loans and leases at fair value 1,735us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember		 856us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember		    
Portion at Fair Value | Commercial Leases        
Financial assets:        
Portfolio loans and leases at fair value 3,426us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialLeasesMember		 3,261us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= fitb_CommercialLeasesMember		    
Portion at Fair Value | Residential Mortgage        
Financial assets:        
Portfolio loans and leases at fair value 12,249us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialMortgageMember		 11,541us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialMortgageMember		    
Portion at Fair Value | Home Equity        
Financial assets:        
Portfolio loans and leases at fair value 9,224us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_HomeEquityMember		 9,181us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_HomeEquityMember		    
Portion at Fair Value | Automobile Loan Securitizations        
Financial assets:        
Portfolio loans and leases at fair value 11,748us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_AutomobileLoanMember		 11,748us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_AutomobileLoanMember		    
Portion at Fair Value | Credit Card        
Financial assets:        
Portfolio loans and leases at fair value 2,586us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CreditCardReceivablesMember		 2,380us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CreditCardReceivablesMember		    
Portion at Fair Value | Other Consumer Loans and Leases        
Financial assets:        
Portfolio loans and leases at fair value 414us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= fitb_OtherConsumerLoansAndLeasesMember		 361us-gaap_LoansReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member
/ us-gaap_FinancialInstrumentAxis
= fitb_OtherConsumerLoansAndLeasesMember		    
Portion at Fair Value | Fair Value, Inputs, Level 1        
Financial assets:        
Cash and due from banks, fair value 3,091us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 3,178us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Other Short Term Investments Fair Value Disclosure 7,914fitb_OtherShortTermInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 5,116fitb_OtherShortTermInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Financial liabilities:        
Federal funds purchased, fair value 144us-gaap_FederalFundsPurchasedFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 284us-gaap_FederalFundsPurchasedFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Long term debt, fair value 14,993us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 9,645us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Portion at Fair Value | Fair Value, Inputs, Level 2        
Financial assets:        
Other securities, fair value 600us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 751us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Financial liabilities:        
Deposits, fair value 101,715us-gaap_DepositsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 99,288us-gaap_DepositsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Other short-term borrowings, fair value 1,561us-gaap_ShorttermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 1,380us-gaap_ShorttermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Long term debt, fair value 655us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		 577us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= fitb_PortionAtFairValueFairValueDisclosure1Member		    
Portion at Fair Value | Fair Value, Inputs, Level 3        
Financial assets:        
Held-to-maturity securities, fair value 187us-gaap_HeldToMaturitySecuritiesFairValue
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Loans held for sale 700us-gaap_LoansHeldForSaleFairValueDisclosure
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Portion at Fair Value | Fair Value, Inputs, Level 3 | Commercial and Industrial Loans        
Financial assets:        
Portfolio loans and leases at fair value 40,781us-gaap_LoansReceivableFairValueDisclosure
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Portion at Fair Value | Fair Value, Inputs, Level 3 | Commercial Mortgage Loans        
Financial assets:        
Portfolio loans and leases at fair value 6,878us-gaap_LoansReceivableFairValueDisclosure
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Portion at Fair Value | Fair Value, Inputs, Level 3 | Commercial Construction        
Financial assets:        
Portfolio loans and leases at fair value 1,735us-gaap_LoansReceivableFairValueDisclosure
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Portion at Fair Value | Fair Value, Inputs, Level 3 | Commercial Leases        
Financial assets:        
Portfolio loans and leases at fair value 3,426us-gaap_LoansReceivableFairValueDisclosure
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Portion at Fair Value | Fair Value, Inputs, Level 3 | Residential Mortgage        
Financial assets:        
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Financial assets:        
Portfolio loans and leases at fair value 11,748us-gaap_LoansReceivableFairValueDisclosure
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Portfolio loans and leases at fair value 2,586us-gaap_LoansReceivableFairValueDisclosure
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Financial assets:        
Portfolio loans and leases at fair value $ 414us-gaap_LoansReceivableFairValueDisclosure
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[1] At December 31, 2014 and 2013, includes $179 and $49 of cash and due from banks, $47 and $48 of commercial mortgage loans, $3,331 and $1,010 of automobile loans, $(22) and $(15) of ALLL, $25 and $13 of other assets, $5 and $1 of other liabilities, $3,434 and $1,048 of long-term debt from consolidated VIEs that are included in their respective captions. For further information, refer to Note 10.
[2] Fair value of $187 and $208 at December 31, 2014 and 2013, respectively.
[3] Includes $561 and $890 of residential mortgage loans held for sale measured at fair value at December 31, 2014, and 2013, respectively.
[4] Amortized cost of $21,677 and $18,409 at December 31, 2014 and 2013, respectively.