Consolidated Statements of Comprehensive Income (Parenthetical) (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]
Foreign currency translation adjustments, attributable to noncontrolling interest, net of taxes	$ 1	$ (1)	$ 1	$ (1)
Foreign currency translation adjustments, tax effect	15	(127)	5	(65)
Foreign currency translation adjustment reclassification - tax effect	210	19	224	19
Unrealized gains (losses) on available-for-sale securities - tax	24	6	34	46
Reclassification adjustment included in net income on available-for-sale securities - tax effect	(1)	(1)	(8)	(5)
Unrealized gains (losses) on cash flow hedges - tax	(56)	66	(53)	115
Reclassification adjustment included in net income on cash flow hedges - tax effect	7	4	11	8
Reclassification adjustment in net income on actuarial loss from equity method investees - tax effect	31	5	33	5
Amortization of net prior service credit included in net income, tax effect	$ (142)	$ (109)	$ (289)	$ (218)