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REPORTING SEGMENTS AND RELATED INFORMATION - Net sales by reporting segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information
Net sales	$ 3,416	$ 2,534	$ 11,183	$ 6,239
Inter-segment eliminations
Segment Reporting Information
Net sales	(125)	(17)	(404)	(39)
Air Management
Segment Reporting Information
Net sales	1,633	1,459	5,419	3,697
Air Management | Operating Segments
Segment Reporting Information
Net sales	1,671	1,476	5,536	3,736
e-Propulsion & Drivetrain
Segment Reporting Information
Net sales	1,184	1,075	3,897	2,542
e-Propulsion & Drivetrain | Operating Segments
Segment Reporting Information
Net sales	1,223	1,075	4,026	2,542
Fuel Injection
Segment Reporting Information
Net sales	374	0	1,224	0
Fuel Injection | Operating Segments
Segment Reporting Information
Net sales	420	0	1,375	0
Aftermarket
Segment Reporting Information
Net sales	225	0	643	0
Aftermarket | Operating Segments
Segment Reporting Information
Net sales	$ 227	$ 0	$ 650	$ 0

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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