Related Party Transactions - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	3 Months Ended		12 Months Ended
	Jun. 30, 2009	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Related Party Transaction [Line Items]
Outstanding balance of loans to Vantiv, LLC	$ 1,250,000,000
Income recognized on Equity method investments in Vantiv, LLC				61,000,000	57,000,000
Dividend on Equity method investment in Vantiv, LLC				74,000,000	3,000,000
Percentage Of Processing Business Sold		6.00%		6.00%
Gain on sale of Processing Business		157,000,000	115,000,000
Service fee paid to Vantiv, LLC				83,000,000	74,000,000
Loans to related parties		93,000,000		93,000,000	172,000,000
Line Of Credit		4,281,000,000		4,281,000,000	4,744,000,000
Loan Processing Fee						4,000,000
Investment in Vantiv Holding, LLC		563,000,000		563,000,000	576,000,000
Incremental Share Purchase Option		20		20
Voting Power In Vantiv		18.50%		18.50%
During Deconversion Period
Related Party Transaction [Line Items]
Revenue From Related Parties				1,000,000	21,000,000
Beyond Deconversion Period
Related Party Transaction [Line Items]
Revenue From Related Parties				34,000,000	37,000,000
Vantiv Holding, LLC
Related Party Transaction [Line Items]
Loans to related parties		325,000,000		325,000,000	377,000,000
Line Of Credit		50,000,000		50,000,000	50,000,000
Interest income relating to the Vantiv, LLC loans				$ 11,000,000	$ 18,000,000	$ 102,000,000
Units Of Equity Method Investment Held		70		70
Class B Common Shares [Member]
Related Party Transaction [Line Items]
Units Of Equity Method Investment Held		70		70