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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Changes in Accumulated Other Comprehensive Income/(Loss)
Total period activity	$ 58	$ (65)
Derivative Instruments
Changes in Accumulated Other Comprehensive Income/(Loss)
Balance at beginning of period	(177)	(223)
Reclassification adjustments	(2)	(2)
Unrealized gain/(loss) on hedges	(23)	31
Total period activity	(21)	33
Balance at end of period	(198)	(190)
Translation Adjustments
Changes in Accumulated Other Comprehensive Income/(Loss)
Balance at beginning of period	(853)	(548)
Currency translation adjustments	78	(98)
Total period activity	78	(98)
Balance at end of period	(775)	(646)
Other
Changes in Accumulated Other Comprehensive Income/(Loss)
Balance at beginning of period		1
Other	1
Total period activity	1
Balance at end of period	1	1
Total
Changes in Accumulated Other Comprehensive Income/(Loss)
Balance at beginning of period	(1,030)	(770)
Reclassification adjustments	(2)	(2)
Unrealized gain/(loss) on hedges	(23)	31
Currency translation adjustments	78	(98)
Other	1
Total period activity	58	(65)
Balance at end of period	$ (972)	$ (835)

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Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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