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OTHER OPERATING EXPENSE, NET - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($) employee	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($) employee
Schedule of Equity Method Investments
Merger, acquisition and divestiture expense	$ 8	$ 16	$ 36	$ 58
Loss on sale	0	0	7	0
Gain on business insurance recovery	$ 1	$ 3	$ 3	$ 9
Europe | Facility Closure
Schedule of Equity Method Investments
Number of properties | employee		2		2
Air Management
Schedule of Equity Method Investments
Impairment of carrying value				$ 9
e-Propulsion & Drivetrain
Schedule of Equity Method Investments
Impairment of carrying value				$ 8

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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-Section 45
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