Investment Securities (Gains And Losses On Available-For-Sale Securities) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Investments, Debt and Equity Securities [Abstract]
Securities gains									$ 1		$ 14		$ 22
Securities losses									(2)	[1]	(2)	[1]	(8)	[1]
Net securities (losses) gains	$ 0	$ 1	$ (2)	$ 0	$ 1	$ 0	$ 6	$ 5	$ (1)		$ 12		$ 14

[1] Primarily charges related to a derivative contract tied to the conversion rate of Visa Class B shares.