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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 620	$ 531	$ 1,209	$ 1,031
Currency translation adjustments	114	(121)	63	(238)
Changes in derivative financial instruments, net of tax	(25)	(22)	(11)	(70)
Comprehensive income	709	388	1,261	723
Comprehensive income (loss) attributable to noncontrolling interest	1		1	(2)
Comprehensive income attributable to Company	$ 708	$ 388	$ 1,260	$ 725

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