CONSOLIDATED STATEMENTS OF CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance at beginning of period	$ (1,081)	$ (467)	$ (97)
Reclassification adjustments	8	(45)	4
Deferred gain/(loss) on cash flow hedges, net of tax	(33)	1	(86)
Currency translation adjustments	96	(570)	(288)
Other	1
Total period activity	72	(614)	(370)
Balance at end of period	(1,009)	(1,081)	(467)
Derivative Instruments
Balance at beginning of period	(203)	(159)	(77)
Reclassification adjustments	8	(45)	4
Deferred gain/(loss) on cash flow hedges, net of tax	(33)	1	(86)
Total period activity	(25)	(44)	(82)
Balance at end of period	(228)	(203)	(159)
Translation Adjustments
Balance at beginning of period	(878)	(308)	(20)
Currency translation adjustments	96	(570)	(288)
Total period activity	96	(570)	(288)
Balance at end of period	(782)	$ (878)	$ (308)
Other
Other	1
Total period activity	1
Balance at end of period	$ 1