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Option to purchase additiona Non-voting units of Vantiv Holding, LLC

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Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

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Exercise price per share or per unit of warrants or rights outstanding.

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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 - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Jun. 30, 2009
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans to loans held for sale	$ 3	$ 9
Existing loans held for sale, further adjusted	600		$ 519
Residential loans transferred to the Bancorp's portfolio	12	78
Fair value changes included in earnings for instruments for which the fair value option was elected	$ 30	30
Incremental Unit Purchase Option	7.8
Vantiv Holding, LLC Warrant Exercise Price	$ 15.98
Percentage of Vantiv Holding, LLC sold to Advent for cash and warrants				51.00%
Commercial Loans Held For Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Existing loans held for sale, further adjusted		1
Gain Loss On Sales Of Loans Net		5
Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net impact related to fair value adjustments	$ 1	3
Nonrecurring Losses Included As Charge-Offs	2	5
Residential Mortgage Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential loans transferred to the Bancorp's portfolio		55
Fair value adjustment		$ 1
The fair value of loans	2		$ 2
Interest Rate Lock Commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net fair value of the interest rate lock commitments	29
Change in the fair value of the interest rate lock commitments, due to decrease in current interest rates of 25 bp	8
Change in the fair value of the interest rate lock commitments, due to decrease in current interest rates of 50 bp	15
Change in the fair value of the interest rate lock commitments, due to increase in current interest rates of 25 bp	10
Change in the fair value of the interest rate lock commitments, due to increase in current interest rates of 50 bp	21
Change in fair value of interest rate lock commitments, due to 10% adverse changes in the assumed loan closing rates	3
Change in fair value of interest rate lock commitments, due to 20% adverse changes in the assumed loan closing rates	6
Change in fair value of interest rate lock commitments, due to 10% favorable changes in the assumed loan closing rates	3
Change in fair value of interest rate lock commitments, due to 20% favorable changes in the assumed loan closing rates	6
Fair value measurements nonrecurring \| Commercial Loans Held For Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans to loans held for sale	$ 5