Total Loans And Leases Managed By The Bancorp (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	$ 81,018	$ 77,491
Credit Card Loan [Member]
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	1,978	1,896
Balance of Loans 90 days or More Past Due	30	42
Net Credit Losses	98	155
Loans Held For Sale [Member]
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	2,954	2,216
Loans and Leases Managed and Securitized
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	83,972	79,707
Balance of Loans 90 days or More Past Due	200	274
Net Credit Losses	1,172	2,328
Loans and Leases Managed and Securitized | Commercial And Industrial Loans [Member]
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	30,828	27,275
Balance of Loans 90 days or More Past Due	4	16
Net Credit Losses	276	586
Loans and Leases Managed and Securitized | Commercial Mortgage Loans [Member]
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	10,214	10,992
Balance of Loans 90 days or More Past Due	3	11
Net Credit Losses	195	524
Loans and Leases Managed and Securitized | Commercial Construction
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	1,037	2,111
Balance of Loans 90 days or More Past Due	1	3
Net Credit Losses	85	252
Loans and Leases Managed and Securitized | Commercial Leases [Member]
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	3,531	3,378
Net Credit Losses	(2)	2
Loans and Leases Managed and Securitized | Residential Mortgage
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	13,474	10,857
Balance of Loans 90 days or More Past Due	79	100
Net Credit Losses	173	439
Loans and Leases Managed and Securitized | Home Equity
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	10,719	11,513
Balance of Loans 90 days or More Past Due	74	89
Net Credit Losses	220	264
Loans and Leases Managed and Securitized | Automobile Loan
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	11,827	10,983
Balance of Loans 90 days or More Past Due	9	13
Net Credit Losses	53	88
Loans and Leases Managed and Securitized | Other Consumer Loans and Leases
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	364	702
Net Credit Losses	$ 74	$ 18