Total Loans And Leases Managed By The Bancorp (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	$ 82,359	$ 77,967
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	1,863	1,185
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	84,222	79,152
Balance of Loans 90 days or More Past Due	203	279
Net Credit Losses	401	671
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	32,625	28,155
Balance of Loans 90 days or More Past Due	2	7
Net Credit Losses	100	159
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	9,697	10,331
Balance of Loans 90 days or More Past Due	22	12
Net Credit Losses	55	101
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	834	1,805
Balance of Loans 90 days or More Past Due		48
Net Credit Losses	18	46
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	3,471	3,326
Balance of Loans 90 days or More Past Due		1
Net Credit Losses	7	(1)
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	13,218	10,838
Balance of Loans 90 days or More Past Due	80	87
Net Credit Losses	73	101
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	10,377	11,048
Balance of Loans 90 days or More Past Due	67	84
Net Credit Losses	85	117
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	11,739	11,315
Balance of Loans 90 days or More Past Due	8	10
Net Credit Losses	16	28
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	318	478
Net Credit Losses	9	61
Loans and Leases Managed and Securitized | 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	1,943	1,856
Balance of Loans 90 days or More Past Due	24	30
Net Credit Losses	$ 38	$ 59