XML 167 R91.htm IDEA: XBRL DOCUMENT v2.4.1.9
Summarizes the Bancorp's Recorded Investment in Impaired Loans and Related Allowance by Class (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance $ 1,430us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance $ 2,729us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 1,027us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance 891us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Unpaid Principal Balance 2,457us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance 3,620us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 1,288us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment 2,539us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Impaired Financing Receivable With No Related Allowance Recorded Investment 945us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment 814us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Recorded Investment 2,233us-gaap_ImpairedFinancingReceivableRecordedInvestment [1] 3,353us-gaap_ImpairedFinancingReceivableRecordedInvestment [2]
Allowance 295us-gaap_ImpairedFinancingReceivableRelatedAllowance 367us-gaap_ImpairedFinancingReceivableRelatedAllowance
Commercial Portfolio Segment | Commercial and Industrial Loans    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 598us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 870us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 311us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 181us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 486us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 759us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Recorded Investment 276us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 177us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance 149us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 145us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialAndIndustrialLoansMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Portfolio Segment | Commercial Mortgage Loans, Owner Occupied    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 54us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 [3] 85us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 [4]
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 72us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 106us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 46us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 [3] 74us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 [4]
Impaired Financing Receivable With No Related Allowance Recorded Investment 68us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 98us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance 14us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 [3] 11us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 [4]
Commercial Portfolio Segment | Commercial Mortgage Loans, Non Owner Occupied    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 69us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 154us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 251us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 154us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 57us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 134us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Recorded Investment 231us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 147us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance 4us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 14us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialMortgageLoansNonOwnerOccupiedMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Portfolio Segment | Commercial Construction    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 18us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 68us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 48us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 77us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 15us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 54us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Recorded Investment 48us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 63us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance   5us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Portfolio Segment | Commercial Leases    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 3us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 12us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 2us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 14us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 3us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 12us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Recorded Investment 2us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		 14us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance 2us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fitb_CommercialLeasesMember
/ fitb_PortfolioSegmentAxis
= us-gaap_CommercialPortfolioSegmentMember		  
Residential Mortgage Loans | Troubled Debt Restructuring    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 388us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember		 1,081us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 155us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember		 313us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 383us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember		 1,052us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Recorded Investment 135us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember		 273us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
Allowance 65us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember		 139us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
Consumer Portfolio Segment | Home Equity | Troubled Debt Restructuring    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 203us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember		 377us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 183us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember		 43us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 201us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember		 373us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Recorded Investment 180us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember		 39us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember
Allowance 42us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember		 39us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember
Consumer Portfolio Segment | Automobile Loans | Troubled Debt Restructuring    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 19us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoansAutoFinancingReceivableMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember		 23us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoansAutoFinancingReceivableMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoansAutoFinancingReceivableMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
= us-gaap_ConsumerPortfolioSegmentMember		 3us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoansAutoFinancingReceivableMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= fitb_TroubledDebtRestructuringMember
/ fitb_PortfolioSegmentAxis
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Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 19us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
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Impaired Financing Receivable With No Related Allowance Recorded Investment 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
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= us-gaap_ConsumerPortfolioSegmentMember		 3us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
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Allowance 3us-gaap_ImpairedFinancingReceivableRelatedAllowance
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Consumer Portfolio Segment | Credit Card | Troubled Debt Restructuring    
Impaired Financing Receivable Unpaid Principal Balance    
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance 78us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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= us-gaap_ConsumerPortfolioSegmentMember
Impaired Financing Receivable Recorded Investment Abstract    
Impaired Financing Receivable With Related Allowance Recorded Investment 78us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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Allowance $ 16us-gaap_ImpairedFinancingReceivableRelatedAllowance
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[1] Includes $869, $485 and $420, respectively, of commercial, residential mortgage and consumer TDRs on accrual status; $214, $33 and $63, respectively, of commercial, residential mortgage and consumer TDRs on nonaccrual status.
[2] Includes $869, $1,241 and $444, respectively, of commercial, residential mortgage and consumer TDRs on accrual status; $228, $84 and $52, respectively, of commercial, residential mortgage and consumer TDRs on nonaccrual status.
[3] Excludes five restructured nonaccrual loans at December 31, 2014 associated with a consolidated VIE, in which the Bancorp has no continuing credit risk due to the risk being assumed by a third party, with an unpaid principal balance of $28, a recorded investment of $28, and an allowance of $10.
[4] Excludes five restructured nonaccrual loans at December 31, 2013 associated with a consolidated VIE, in which the Bancorp has no continuing credit risk due to the risk being assumed by a third party, with an unpaid principal balance of $28, a recorded investment of $28, and an allowance of $11.