Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Servicing fees and late fees	$ 72,000,000	$ 88,000,000	$ 144,000,000	$ 158,000,000
Mortgage Servicing Rights
Servicing fees and late fees	94,000,000	100,000,000	186,000,000	198,000,000
Total unpaid principal amount of mortgaged loans serviced	162,900,000,000		162,900,000,000		167,200,000,000
Included in these amounts of loans serviced for third parties	131,500,000,000		131,500,000,000		134,100,000,000
Residential mortgage loans sold			$ 1,700,000,000