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Valuation adjustments for loans held for sale and portfolio loans.

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eflects the adjusted carrying amount of loans for which it is probable, based on current facts and circumstances, that a creditor will not initially be able to collect all amounts due according to the contractual terms of the loan agreement, or will not recover the previously reported carrying amount of the loan.

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Net losses on operating lease equipment during the period

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Nonrecurring losses included as charge-offs on loans transferred to OREO

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Sensitivity Analysis of Decrease in Fair Value of Derivatives, Impact of 50 Basis Point Increase in the Interest Rate

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Sensitivity Analysis of Decrease in Fair Value of Derivatives, Impact of 25 Basis Point Increase in the Interest Rate

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Sensitivity Analysis of Increase in Fair Value of Derivatives, Impact of 50 Basis Point Decrease in the Interest Rate

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Sensitivity Analysis of Increase in Fair Value of Derivatives, Impact of 10% Changes in the Assumed Loan Closing Rates

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Sensitivity Analysis of Increase in Fair Value of Derivatives, Impact of 20% Changes in the Assumed Loan Closing Rates

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Total number of shares the exercise of the warrant was settled for

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Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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This item represents the estimated amount of gains or losses included in earnings during the period attributable to changes in instrument-specific credit risk arising from loans and other receivables held as assets.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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The hypothetical financial impact of a 10 percent adverse change of the specified assumption on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date.

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Value of loans held-for-sale transferred to loans held in the entity's portfolio in noncash transactions.

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Fair Value Measurements (Fair Value Measurements - Additional Information) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended			12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Net fair value of the interest rate lock commitments	$ 16
Change in the fair value of the interest rate lock commitments, due to decrease in current interest rates of 25 bp	6
Change in the fair value of the interest rate lock commitments, due to decrease in current interest rates of 50 bp	11
Change in the fair value of the interest rate lock commitments, due to increase in current interest rates of 25 bp	7
Change in the fair value of the interest rate lock commitments, due to increase in current interest rates of 50 bp	14
Change in fair value of interest rate lock commitments, due to 10% adverse changes in the assumed loan closing rates	2
Change in fair value of interest rate lock commitments, due to 20% adverse changes in the assumed loan closing rates	3
Change in fair value of interest rate lock commitments, due to 10% favorable changes in the assumed loan closing rates	2
Change in fair value of interest rate lock commitments, due to 20% favorable changes in the assumed loan closing rates	3
Portfolio loans to loans held for sale	5		$ 3
Existing loans held for sale, further adjusted	606	$ 686		$ 686
Residential loans transferred to the Bancorp's portfolio	3		12
Fair value changes included in earnings for instruments for which the fair value option was elected	22		6
Net Losses On Operating Lease Equipment	20
Larger commercial loans, subject to impairment review	1
Vantiv Holding, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Vantiv Holding, LLC Warrant Exercise Price		$ 15.98		$ 15.98
Vantiv Holding, LLC \| Class C Units
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Exchange Of Class C Shares For Class A Shares		5.7
Warrant Exercised Total Shares Settled		7.8
Vantiv, Inc. \| Class A Units
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Exchange Of Class C Shares For Class A Shares		5.7
Vantiv, Inc. \| Class A Units \| Shares Sold In Secondary Offering
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Exchange Of Class C Shares For Class A Shares		4.8
Vantiv, Inc. \| Class A Units \| Shares repurchased by Vantiv Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Exchange Of Class C Shares For Class A Shares		0.9
Commercial Loans Held For Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Portfolio loans to loans held for sale	18		5
Net impact related to fair value adjustments	17
Gain Loss On Sales Of Loans Net	2		2
Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Net impact related to fair value adjustments	2		1
Nonrecurring Losses Included As Charge-Offs	2		$ 2
Residential Mortgage Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of loans	$ 2			$ 2