Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2018

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


	Currency Translation Adjustments			Derivative Financial Instruments, Net of Tax			Defined Benefit Plans, Net of Tax			Total
Balance at December 31, 2017	$	(1,104	)	$	7		$	(13	)	$	(1,110	)
Accumulated other comprehensive income (loss) before reclassifications		(187	)		3			—			(184	)
Amounts reclassified from accumulated other comprehensive income (loss)		—			(4	)		—			(4	)

Balance at June 30, 2018	$	(1,291	)	$	6		$	(13	)	$	(1,298	)

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


	Three Months Ended June 30,
	2018										2017
	Currency Translation Adjustments		Derivative Financial Instruments			Defined Benefit Plans		Total			Currency Translation Adjustments		Derivative Financial Instruments			Defined Benefit Plans		Total
Revenue	$	—	$	—		$	—	$	—		$	—	$	1		$	—	$	1
Cost of revenue		—		(1	)		—		(1	)		—		8			—		8
Tax effect		—		—			—		—			—		(2	)		—		(2	)

	$	—	$	(1	)	$	—	$	(1	)	$	—	$	7		$	—	$	7


	Six Months Ended June 30,
	2018										2017
	Currency Translation Adjustments		Derivative Financial Instruments			Defined Benefit Plans		Total			Currency Translation Adjustments		Derivative Financial Instruments			Defined Benefit Plans		Total
Revenue	$	—	$	(1	)	$	—	$	(1	)	$	—	$	(4	)	$	—	$	(4	)
Cost of revenue		—		(5	)		—		(5	)		—		4			—		4
Tax effect		—		2			—		2			—		2			—		2

	$	—	$	(4	)	$	—	$	(4	)	$	—	$	2		$	—	$	2