SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) shares in Thousands				3 Months Ended								12 Months Ended
	Dec. 05, 2017	Dec. 04, 2017	Nov. 22, 2017	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	Dec. 31, 2016
Schedule Of Equity-method And Cost-method Investments [Line Items]
Record Date			Nov. 22, 2017
Ordinary Shares Began Trading Date	Dec. 05, 2017
Payments to acquire cost method investment												$ 0	$ 7,000,000	$ 1,000,000
Net income per share:
Weighted average number of diluted shares outstanding (in shares)		88,610		86,140	86,910	88,110	88,550	88,630	88,970	89,050	88,920	87,420	88,890	88,660
Research and development:
Research and development expense												$ 408,000,000	$ 448,000,000	$ 420,000,000
Pre-production costs related to long-term supply agreements:
Preproduction costs capitalized				$ 20,000,000				$ 17,000,000				20,000,000	17,000,000
Property, net				1,509,000,000				1,445,000,000				1,509,000,000	1,445,000,000	1,316,000,000
Special tools balance owned by customers				120,000,000				109,000,000				120,000,000	109,000,000
Special tools balance owned				9,000,000				10,000,000				9,000,000	10,000,000
Intangible assets:
Impairment of intangible assets														0	$ 0
Goodwill impairment:
Goodwill impairment loss												0		0	0
Foreign Currency Translation [Abstract]
Net foreign currency transaction losses												10,000,000	(1,000,000)	(9,000,000)
Derivative Instruments, Gain (Loss) [Line Items]
Asset retirement obligation				2,000,000				2,000,000				2,000,000	2,000,000
Gain (loss) on derivative instruments													16,000,000
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) postretirement benefits cost												0	6,000,000	13,000,000
Other expense, net | Accounting Standards Update 2017-07 | New Accounting Pronouncement, Early Adoption, Effect
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) postretirement benefits cost														$ 9,000,000	9,000,000
Special tools
Pre-production costs related to long-term supply agreements:
Property, net				$ 129,000,000				119,000,000				$ 129,000,000	119,000,000
Delphi - TVS Diesel Systems Ltd
Schedule Of Equity-method And Cost-method Investments [Line Items]
Equity method investment, ownership percentage				50.00%								50.00%
Investment in Tula (Note 2)
Accounting Policies [Abstract]
Other Long-term Investments				$ 21,000,000				21,000,000				$ 21,000,000	21,000,000
Schedule Of Equity-method And Cost-method Investments [Line Items]
Payments to acquire cost method investment													1,000,000		$ 20,000,000
Investment in PolyCharge (Note 2)
Accounting Policies [Abstract]
Other Long-term Investments				$ 6,000,000				$ 7,000,000				$ 6,000,000	$ 7,000,000