Portfolio Balances and Delinquency Balances Based on 90 days or more Past Due and Net Charge-Offs Related to Managed Portfolio Loans (Detail) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Principal Balance	$ 237,839		$ 237,839		$ 238,648
Past Due	8,340		8,340		9,216
Net Charge-offs	520	755	1,103	1,587
Loans
Principal Balance	114,913		114,913		115,975
Past Due	5,246		5,246		5,675
Net Charge-offs	505	722	1,076	1,543
Loans | Commercial Portfolio Segment
Principal Balance	53,369		53,369		53,488
Past Due	1,586		1,586		1,904
Net Charge-offs	179	222	335	391
Loans | Residential Mortgage Loans
Principal Balance	45,024		45,024		46,521
Past Due	2,985		2,985		3,122
Net Charge-offs	297	465	677	1,068
Loans | Consumer Portfolio Segment
Principal Balance	16,520		16,520		15,966
Past Due	675		675		649
Net Charge-offs	29	35	64	84
Managed Securitized Loans | Commercial Portfolio Segment
Principal Balance	2,051		2,051		2,244
Past Due	41		41		44
Net Charge-offs		22		22
Managed Securitized Loans | Residential Mortgage Loans
Principal Balance	120,875		120,875		120,429
Past Due	3,053		3,053		3,497
Net Charge-offs	$ 15	$ 11	$ 27	$ 22