Condensed Statement of Cash Flow - Parent Company Only (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Operating Activities
Net income (loss)	$ 1,836		$ 1,576		$ 1,297
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Provision (benefit) for deferred income taxes	253		271		437
Equity method income from interest in Vantiv Holding, LLC	77		61		57
Net change in:
Other assets	(672)		4		(67)
Accrued taxes, interest and expenses	8		1		79
Net Cash Provided by (Used in) Operating Activities	4,595		2,557		2,366
Net change in:
Other short-term investments	(2,695)		(640)		(267)
Net Cash (Used in) Provided by Investing Activities	(10,184)		(6,533)		(5,285)
Financing Activities
Net change in other short-term borrowings	(4,900)		3,041		1,665
Proceeds from issuance of long-term debt	5,044		523		1,500
Repayment of long-term debt	2,225		3,159		1,607
Dividends paid on common shares	393		309		192
Dividends paid on preferred shares	37		35		50
Issuance of preferred shares	1,034
Common stock issued, value					1,648
Redemption of Series F preferred shares and related warrants					3,408
Net Cash Used In Financing Activities	6,326		3,754		3,423
Increase (Decrease) in Cash and Due from Banks	737		(222)		504
Cash and Due from Banks at Beginning of Period	2,441	[1]	2,663		2,159
Cash and Due from Banks at End of Period	3,178	[1]	2,441	[1]	2,663
Parent Company [Member]
Operating Activities
Net income (loss)	1,836		1,576		1,297
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Provision (benefit) for deferred income taxes	(1)		2		(3)
Equity method income from interest in Vantiv Holding, LLC	(1,103)		220		247
Net change in:
Other assets	13		57		39
Accrued taxes, interest and expenses	(28)		18		3
Net Cash Provided by (Used in) Operating Activities	717		1,873		1,583
Net change in:
Other short-term investments	976		107		(635)
Loans to subsidiaries	(47)		(11)		(489)
Net Cash (Used in) Provided by Investing Activities	1,023		118		(146)
Financing Activities
Net change in other short-term borrowings	(255)		(89)		241
Proceeds from issuance of long-term debt	750		500		1,000
Repayment of long-term debt	1,500		1,440		400
Dividends paid on common shares	393		309		192
Dividends paid on preferred shares	37		35		50
Issuance of preferred shares	1,034
Common stock issued, value					1,648
Repurchase Treasury Shares And Forward Contracts	1,320		650
Redemption of Series F preferred shares and related warrants					3,688
Other, net	(19)		(18)		(6)
Net Cash Used In Financing Activities	(1,740)		(2,041)		(1,447)
Increase (Decrease) in Cash and Due from Banks	0		(50)		(10)
Cash and Due from Banks at Beginning of Period	0		50		60
Cash and Due from Banks at End of Period	$ 0		$ 0		$ 50

[1] At December 31, 2013 and 2012, includes $49 and $0 of cash and due from banks, $48 and $50 of commercial mortgage loans, $ 1,010 and $0 of automobile loans, $(15) and $(5) of ALLL, $13 and $3 of other assets, $1 and $0 of other liabilities, $ 1,048 and $0 of long-term debt from consolidated VIEs that are included in their respective captions. See Note 10.