Restructuring Charges, Net and Asset Impairments - Incurred Costs (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net		$ 119	$ 113	$ 112
Asset impairments related to restructuring actions		29	3	3
Other non-restructuring asset impairments		472	2	2
Impairment of assets held for sale		2	8
Total asset impairment charges		503	13	5
Total restructuring charges, asset impairments, and other		622	126	117
Corporate
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net		5	11	5
Asset impairments related to restructuring actions		0	0	0
Other non-restructuring asset impairments		17	0	2
Impairment of assets held for sale		0	0
Total asset impairment charges		17	0	2
Total restructuring charges, asset impairments, and other		22	11	7
Clean Air | Reportable Segments
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net		22	29	14
Asset impairments related to restructuring actions		0	0	0
Other non-restructuring asset impairments		0	1	0
Impairment of assets held for sale		0	0
Total asset impairment charges		0	1	0
Total restructuring charges, asset impairments, and other		22	30	14
Powertrain | Reportable Segments
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net		50	31	(2)
Asset impairments related to restructuring actions		3	0	0
Other non-restructuring asset impairments		0	0	0
Impairment of assets held for sale		1	0
Total asset impairment charges		4	0	0
Total restructuring charges, asset impairments, and other		54	31	(2)
Ride Performance | Reportable Segments
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net		25	28	53
Asset impairments related to restructuring actions		0	3	3
Other non-restructuring asset impairments		455	0	0
Impairment of assets held for sale		0	0
Total asset impairment charges		455	3	3
Total restructuring charges, asset impairments, and other		480	31	56
Motorparts
Restructuring Cost and Reserve [Line Items]
Asset impairments related to restructuring actions	$ 25
Total asset impairment charges	$ 16
Motorparts | Reportable Segments
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net		17	14	42
Asset impairments related to restructuring actions		26	0	0
Other non-restructuring asset impairments		0	1	0
Impairment of assets held for sale		1	8
Total asset impairment charges		27	9	0
Total restructuring charges, asset impairments, and other		$ 44	$ 23	$ 42