Goodwill and Other Intangible Assets - Summary of Number of Reporting Units in Goodwill (Details) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2019 reporting_unit	Mar. 31, 2019 reporting_unit	Dec. 31, 2020 USD ($) stock	Dec. 31, 2020 USD ($) reporting_unit	Dec. 31, 2019 USD ($)
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				1
Goodwill			$ 508	$ 508	$ 775
Clean Air
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				3,000,000
Goodwill			$ 23	$ 23	22
Powertrain
Goodwill [Line Items]
Number of reporting units with goodwill			1	1,000,000
Goodwill			$ 165	$ 165	325
Ride Performance
Goodwill [Line Items]
Number of reporting units with goodwill	1	2	1	1,000,000
Goodwill			$ 7	$ 7	47
Motorparts
Goodwill [Line Items]
Number of reporting units with goodwill			1	1,000,000
Goodwill			$ 313	$ 313	$ 381
Greater than 25% | Clean Air
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				3
Reporting units of fair value exceeds carrying amount			23	$ 23
Greater than 25% | Powertrain
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				0
Reporting units of fair value exceeds carrying amount			0	$ 0
Greater than 25% | Ride Performance
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				1
Reporting units of fair value exceeds carrying amount			7	$ 7
Greater than 25% | Motorparts
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				1
Reporting units of fair value exceeds carrying amount			313	$ 313
Less than 25% | Clean Air
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				0
Reporting units of fair value exceeds carrying amount			0	$ 0
Less than 25% | Powertrain
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				1
Reporting units of fair value exceeds carrying amount			165	$ 165
Less than 25% | Ride Performance
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit
Reporting units of fair value exceeds carrying amount			0	$ 0
Less than 25% | Motorparts
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit				0
Reporting units of fair value exceeds carrying amount			$ 0	$ 0