Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2019

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of accumulated other comprehensive income (loss)

The components of accumulated other comprehensive income (loss) were as follows (amounts in millions):

	For the Three Months Ended March 31, 2019
	Foreign currency translation adjustments			Unrealized gain (loss) on forward contracts			Unrealized gain (loss) on available-for-sale securities			Total
Balance at December 31, 2018	$	(629	)	$	23		$	5		$	(601	)
Other comprehensive income (loss) before reclassifications	2			13			(6		)	9
Amounts reclassified from accumulated other comprehensive income (loss) into earnings	—			(11		)	1			(10		)
Balance at March 31, 2019	$	(627	)	$	25		$	—		$	(602	)

	For the Three Months Ended March 31, 2018
	Foreign currency translation adjustments			Unrealized gain (loss) on forward contracts			Unrealized gain (loss) on available-for-sale securities			Total
Balance at December 31, 2017	$	(623	)	$	(15	)	$	—		$	(638	)
Cumulative impact from adoption of new revenue accounting standard	3			—			—			3
Other comprehensive income (loss) before reclassifications	1			(22		)	(3		)	(24		)
Amounts reclassified from accumulated other comprehensive income (loss) into earnings	—			10			—			10
Balance at March 31, 2018	$	(619	)	$	(27	)	$	(3	)	$	(649	)