Total Loans And Leases Managed By The Bancorp (Detail) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	$ 77,967	$ 76,232
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	79,152	78,382
Balance of Loans 90 days or More Past Due	279	397
Net Credit Losses	671	1,016
Loans and Leases Managed and Securitized | Commercial and Industrial Loans
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	28,155	26,011
Balance of Loans 90 days or More Past Due	7	48
Net Credit Losses	159	265
Loans and Leases Managed and Securitized | Commercial Mortgage Loans
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	10,331	11,569
Balance of Loans 90 days or More Past Due	12	53
Net Credit Losses	101	177
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	1,805	3,042
Balance of Loans 90 days or More Past Due	48	37
Net Credit Losses	46	121
Loans and Leases Managed and Securitized | Commercial Leases
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	3,326	3,271
Balance of Loans 90 days or More Past Due	1	4
Net Credit Losses	(1)	4
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	10,838	9,672
Balance of Loans 90 days or More Past Due	87	107
Net Credit Losses	101	173
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	11,048	11,987
Balance of Loans 90 days or More Past Due	84	90
Net Credit Losses	117	134
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	11,315	10,285
Balance of Loans 90 days or More Past Due	10	12
Net Credit Losses	28	51
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	2,334	2,545
Balance of Loans 90 days or More Past Due	30	46
Net Credit Losses	120	91
Loans Held-for-Sale
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	$ 1,185	$ 2,150