Derivative Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified				12 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2009	Dec. 31, 2013 Cash Flow Hedging	Dec. 31, 2013 Interest Rate Floor Cash Flow Hedging	Dec. 31, 2012 Interest Rate Floor Cash Flow Hedging	Dec. 31, 2013 Interest Rate Contract	Dec. 31, 2012 Interest Rate Contract	Dec. 31, 2013 Total collateral (up to and exceeding 100% of the net position)	Dec. 31, 2012 Total collateral (up to and exceeding 100% of the net position)
Derivative [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral									$ 514	$ 927
Valuation adjustments related to the credit risk associated with counterparties of customer accommodation derivative contracts	12	18
Derivative Liability, Fair Value, Amount Offset Against Collateral	559	785
Maximum Length Of Time Hedged In Interest Rate Cash Flow Hedge				5 years 11 months
Deferred gains, net of tax, on cash flow hedges were recorded in accumulated other comprehensive income					13	50
Net deferred gains, net of tax, recorded in accumulated other comprehensive income are expected to be reclassified into earnings					25
Notional amount of the risk participations agreements							1,203	1,006
Credit Risk Derivatives Average Life							3 years
Fair value of risk participation agreements							$ 3	$ 2
Percentage of Vantiv Holding, LLC sold to Advent for cash and warrants			51.00%