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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Changes in Accumulated Other Comprehensive Income/(Loss)
Total period activity	$ (65)	$ 36
Derivative Instruments
Changes in Accumulated Other Comprehensive Income/(Loss)
Balance at beginning of period	(223)	(228)
Reclassification adjustments	2	2
Deferred gain on cash flow hedges	31	7
Total period activity	33	9
Balance at end of period	(190)	(219)
Translation Adjustments
Changes in Accumulated Other Comprehensive Income/(Loss)
Balance at beginning of period	(548)	(782)
Currency translation adjustments	(98)	27
Total period activity	(98)	27
Balance at end of period	(646)	(755)
Other
Changes in Accumulated Other Comprehensive Income/(Loss)
Balance at beginning of period	1	1
Balance at end of period	1	1
Total
Changes in Accumulated Other Comprehensive Income/(Loss)
Balance at beginning of period	(770)	(1,009)
Reclassification adjustments	2	2
Deferred gain on cash flow hedges	31	7
Currency translation adjustments	(98)	27
Total period activity	(65)	36
Balance at end of period	$ (835)	$ (973)

X

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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