Loan Servicing (Residential Mortgage Loans Managed or Securitized and Related Delinquencies and Net Charge-Offs) (Details) (USD $) In Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2011		Dec. 31, 2010
Loan Servicing
Mortgage Loans managed or securitized	$ 22,963	[1]	$ 23,692	[1]
Less: Loans securitized and transferred to securities available for sale	4		4
Loans held for sale	1,745		3,068
Covered mortgage loans	1,378		1,446
Mortgage loans sold with recourse	1,464		1,624
Mortgage loans held for investment	18,372		17,550
Mortgage loans on nonaccrual status	292	[2]	466	[2]
Mortgage loans 90 days past due and still accruing interest	90	[2]	143	[2]
Mortgage loans net charge-offs	$ 181	[3]	$ 390	[3]

[1] Balances exclude loans serviced for others, with no other continuing involvement.

[2] Includes amounts related to residential mortgage loans held for sale and excludes amounts related to government guaranteed loans. Refer to Note 3 for additional disclosures related to past due government guaranteed loans.

[3] Net charge-offs for June 30, 2011 reflect six months.