Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 1,405	$ 1,339	$ 2,685	$ 2,595
Other comprehensive loss:
Net unrealized securities (losses) gains, net of tax	(127)	11	(162)	31
Net unrealized derivative gains, net of tax	0	0	0	1
Foreign currency translation adjustments, net of tax	(228)	(199)	(273)	(127)
Net unrealized pension and other postretirement benefit gains, net of tax	27	14	54	20
Other comprehensive loss	(328)	(174)	(381)	(75)
Comprehensive income	$ 1,077	$ 1,165	$ 2,304	$ 2,520