Goodwill and Other Intangible Assets (Revenue from Mortgage and Other Loan Servicing) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenue from Mortgage and Other Loan Servicing	$ 159	$ 174	$ 318	$ 356