Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2017

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, 2014	$	(515	)	$	(228	)	$	(91	)	$	(834	)

Accumulated other comprehensive income (loss) before reclassifications		(764	)		(176	)		26			(914	)
Amounts reclassified from accumulated other comprehensive income (loss)		—			199			(4	)		195

Balance at December 31, 2015	$	(1,279	)	$	(205	)	$	(69	)	$	(1,553	)

Accumulated other comprehensive income (loss) before reclassifications		(97	)		32			35			(30	)
Amounts reclassified from accumulated other comprehensive income (loss)		—			134			(3	)		131

Balance at December 31, 2016	$	(1,376	)	$	(39	)	$	(37	)	$	(1,452	)

Accumulated other comprehensive income (loss) before reclassifications		272			41			25			338
Amounts reclassified from accumulated other comprehensive income (loss)		—			5			(1	)		4

Balance at December 31, 2017	$	(1,104	)	$	7		$	(13	)	$	(1,110	)

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


	Years Ended December 31,
	2017											2016											2015
	Currency Translation Adjustments		Derivative Financial Instruments			Defined Benefit Plans			Total			Currency Translation Adjustments		Derivative Financial Instruments			Defined Benefit Plans			Total			Currency Translation Adjustments		Derivative Financial Instruments			Defined Benefit Plans			Total
Revenue	$	—	$	(8	)	$	—		$	(8	)	$	—	$	(5	)	$	—		$	(5	)	$	—	$	(19	)	$	—		$	(19	)
Cost of revenue		—		12			—			12			—		191			—			191			—		295			—			295
Selling, general, and administrative		—		—			(1	)		(1	)		—		—			(5	)		(5	)		—		—			(6	)		(6	)
Tax effect		—		1			—			1			—		(52	)		2			(50	)		—		(77	)		2			(75	)

	$	—	$	5		$	(1	)	$	4		$	—	$	134		$	(3	)	$	131		$	—	$	199		$	(4	)	$	195