Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2020

Accumulated Other Comprehensive Income [Abstract]

Components of Accumulated Other Comprehensive Loss

The following table provides the components of accumulated other comprehensive loss for 2020, 2019 and 2018:

(in millions)	Foreign Currency Translation		Post-retirement Benefit Plans		Derivative Instruments		Total
Balance at January 1, 2018	$	(15)	$	(198)	$	3	$	(210)
Cumulative effect of change in accounting principle	(11)		(6)				(17)
Foreign currency translation adjustment	(83)						(83)
Income tax impact on foreign currency translation adjustment	(12)						(12)
Changes in post-retirement benefit plans			(36)				(36)
Foreign currency translation adjustment for post-retirement benefit plans			15				15
Income tax expense on changes in post-retirement benefit plans			5				5
Amortization of prior service cost and net actuarial loss on post-retirement benefit plans into other non-operating income (expense), net			9				9
Income tax impact on amortization of post-retirement benefit plan items			(3)				(3)
Unrealized loss on derivative hedge agreements					(8)		(8)
Reclassification of unrealized (gain) loss on foreign exchange agreements into cost of revenue					4		4
Balance at December 31, 2018	$	(121)	$	(214)	$	(1)	$	(336)
Foreign currency translation adjustment	27						27
Income tax impact on foreign currency translation adjustment	(9)		—				(9)
Changes in post-retirement benefit plans			(83)				(83)
Settlement charge released into other non-operating income (expense), net			9				9
Foreign currency translation adjustment for post-retirement benefit plans			(3)				(3)
Income tax expense on changes in post-retirement benefit plans, including settlement			16				16
Amortization of prior service cost and net actuarial loss on post-retirement benefit plans into other non-operating income (expense), net			8				8
Income tax impact on amortization of post-retirement benefit plan items			(2)				(2)
Unrealized loss on derivative hedge agreements					(14)		(14)
Reclassification of unrealized loss on foreign exchange agreements into revenue					7		7
Reclassification of unrealized loss on foreign exchange agreements into cost of revenue					5		5
Balance at December 31, 2019	$	(103)	$	(269)	$	(3)	$	(375)
Foreign currency translation adjustment	(22)						(22)
Income tax impact on foreign currency translation adjustment	39						39
Changes in post-retirement benefit plans			(73)				(73)

(in millions)	Foreign Currency Translation		Post-retirement Benefit Plans		Derivative Instruments		Total
Foreign currency translation adjustment for post-retirement benefit plans			(19)				(19)
Income tax expense on changes in post-retirement benefit plans			18				18
Amortization of prior service cost and net actuarial loss on post-retirement benefit plans into other non-operating income (expense), net			16				16
Income tax impact on amortization of post-retirement benefit plan items			(3)				(3)
Unrealized gain on derivative hedge agreements					9		9
Reclassification of unrealized gain on foreign exchange agreements into revenue					(4)		(4)
Reclassification of unrealized loss on foreign exchange agreements into cost of revenue					1		1
Balance at December 31, 2020	$	(86)	$	(330)	$	3	$	(413)