Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Comprehensive Income Loss Textuals [Abstract]
Net unrealized securities (losses) gains, tax	$ (30)	$ 10	$ (120)	$ 24
Net unrealized derivatives gains, tax	0	1	0	1
Foreign currency translation adjustments, tax	(48)	(168)	83	(155)
Net unrealized pension and other postretirement benefit gains, tax	$ 6	$ 6	$ 37	$ 19