Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries - Supplemental Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Condensed Financial Statements
Selling, general and administrative	$ 151		$ 174		$ 349	$ 360
Research and development	31		46		82	95
Depreciation, amortization and impairments	140		170		278	335
Restructuring and other	16		6		38	13
Operating Income (Loss), Total	(56)		128		(88)	251
Interest expense	(124)		(147)		(248)	(301)
Gain (Loss) on Extinguishment of Debt	(12)		(60)		(2)	(60)
(Loss) gain on remeasurement of debt	(12)		(3)		(2)	2
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	(196)		(68)		(347)	(88)
Income Tax Expense (Benefit)	(2)		(7)		(6)	(11)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	(198)	$ (155)	(75)	$ (24)	(353)	(99)
Net Income (Loss) Attributable to Noncontrolling Interest	5		2		9	2
Net Income (Loss) Attributable to Parent			(77)		(362)	(101)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	62	$ (97)	(51)	$ 51	(35)	0
Foreign currency translation gain, net of tax	61		(39)		(22)	16
Pension and post-retirement gain (loss), net of tax	(1)		(1)		1	0
Derivative financial instruments unrealized gain (loss), net of tax	2		(11)		(14)	(16)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(136)		(126)		(388)	(99)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	$ (141)		$ (128)		$ (397)	$ (101)