Selected Quarterly Financial Data, Unaudited (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Total revenue		$ 863	$ 855	$ 845	$ 837	$ 886	$ 821	$ 845	$ 812	$ 3,400	$ 3,363	$ 3,084
Cost of revenues		339	317	321	307	341	301	316	297	1,284	1,255	1,164
Selling, general and administrative										707	697	613
Research and development										188	202	184
Restructuring and other										28	253	46
Depreciation, amortization and impairments										647	690	683
Operating income										546	266	394
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(37)	18	(75)	(24)	207	(352)	(6)	(202)	(118)	(352)	(242)
Net Income (Loss) Attributable to Parent		$ (43)	$ 14	$ (77)	$ (24)	$ 207	$ (352)	$ (6)	$ (202)	$ (130)	$ (352)	$ (242)
Basic net (loss) income per share (in dollars per share)		$ (0.46)	$ 0.15	$ (0.83)	$ (0.26)	$ 2.25	$ (3.85)	$ (0.06)	$ (2.24)	$ (1.40)	$ (3.87)	$ (2.72)
Earnings Per Share, Diluted		$ (0.46)	$ 0.15	$ (0.83)	$ (0.26)	$ 2.21	$ (3.85)	$ (0.06)	$ (2.24)	$ (1.40)	$ (3.87)	$ (2.72)
Weighted average number of shares used in per share calculations:
Basic shares (in shares)		93	93	93	92	92	91	91	90	93	91	89
Weighted Average Number of Shares Outstanding, Diluted		93	94	93	92	93	91	91	90	93	91	89
Loss on debt financing transactions	$ 93	$ (40)		$ 60						$ 100	$ 93	$ 38
Gain (loss) on remeasurement of debt		12	$ (19)	$ 3	$ (5)	$ 14	$ (4)	$ 35	$ (1)	9	43	$ 0
Loss contingency accrual		$ 3				4				$ 3	$ 4
Shuffle Tech Matter
Weighted average number of shares used in per share calculations:
Loss contingency accrual							$ 310
Reversal of legal reserve due to settlement						$ 183