Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 1,529	$ 1,405	$ 2,961	$ 2,685
Other comprehensive (loss) income:
Net unrealized securities (losses) gains, net of tax	3	(127)	42	(162)
Foreign currency translation adjustments, net of tax	6	(228)	(28)	(273)
Net unrealized pension and other postretirement benefit gains, net of tax	14	27	41	54
Other comprehensive (loss) income	23	(328)	55	(381)
Comprehensive income	$ 1,552	$ 1,077	$ 3,016	$ 2,304