Consolidated Statement of Comprehensive Income (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	$ (349)	$ (738)	$ 199
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect	(148)	(25)	22
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	$ 147	$ (35)	$ (141)