Segment and Geographic Area Information - Revenue from External Customers (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	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
Segment Reporting [Line Items]
Revenues from external customers	$ 4,143	$ 4,319	$ 4,504	$ 4,484	$ 4,278	$ 2,371	$ 2,533	$ 2,581	$ 17,450	$ 11,763	$ 9,274
Clean Air
Segment Reporting [Line Items]
Revenues from external customers									7,121	6,707	6,216
Powertrain
Segment Reporting [Line Items]
Revenues from external customers									4,408	1,112	0
Ride Performance
Segment Reporting [Line Items]
Revenues from external customers									2,754	2,164	1,807
Motorparts
Segment Reporting [Line Items]
Revenues from external customers									3,167	1,780	1,251
North America
Segment Reporting [Line Items]
Revenues from external customers									7,425	5,254	4,326
North America | Clean Air
Segment Reporting [Line Items]
Revenues from external customers									3,031	2,981	2,866
North America | Powertrain
Segment Reporting [Line Items]
Revenues from external customers									1,503	386	0
North America | Ride Performance
Segment Reporting [Line Items]
Revenues from external customers									873	770	674
North America | Motorparts
Segment Reporting [Line Items]
Revenues from external customers									2,018	1,117	786
Europe, Middle East, Africa, and South America
Segment Reporting [Line Items]
Revenues from external customers									6,764	4,404	3,283
Europe, Middle East, Africa, and South America | Clean Air
Segment Reporting [Line Items]
Revenues from external customers									2,388	2,415	2,143
Europe, Middle East, Africa, and South America | Powertrain
Segment Reporting [Line Items]
Revenues from external customers									2,106	498	0
Europe, Middle East, Africa, and South America | Ride Performance
Segment Reporting [Line Items]
Revenues from external customers									1,338	933	736
Europe, Middle East, Africa, and South America | Motorparts
Segment Reporting [Line Items]
Revenues from external customers									932	558	404
Asia Pacific
Segment Reporting [Line Items]
Revenues from external customers									3,261	2,105	1,665
Asia Pacific | Clean Air
Segment Reporting [Line Items]
Revenues from external customers									1,702	1,311	1,207
Asia Pacific | Powertrain
Segment Reporting [Line Items]
Revenues from external customers									799	228	0
Asia Pacific | Ride Performance
Segment Reporting [Line Items]
Revenues from external customers									543	461	397
Asia Pacific | Motorparts
Segment Reporting [Line Items]
Revenues from external customers									217	105	61
OE Value-add
Segment Reporting [Line Items]
Revenues from external customers									3,027	2,500	2,187
OE Value-add | Clean Air
Segment Reporting [Line Items]
Revenues from external customers									3,027	2,500	2,187
OE Value-add | Powertrain
Segment Reporting [Line Items]
Revenues from external customers									0	0	0
OE Value-add | Ride Performance
Segment Reporting [Line Items]
Revenues from external customers									0	0	0
OE Value-add | Motorparts
Segment Reporting [Line Items]
Revenues from external customers									0	0	0
OE Substrate
Segment Reporting [Line Items]
Revenues from external customers									11,256	7,483	5,836
OE Substrate | Clean Air
Segment Reporting [Line Items]
Revenues from external customers									4,094	4,207	4,029
OE Substrate | Powertrain
Segment Reporting [Line Items]
Revenues from external customers									4,408	1,112	0
OE Substrate | Ride Performance
Segment Reporting [Line Items]
Revenues from external customers									2,754	2,164	1,807
OE Substrate | Motorparts
Segment Reporting [Line Items]
Revenues from external customers									0	0	0
Aftermarket
Segment Reporting [Line Items]
Revenues from external customers									3,167	1,780	1,251
Aftermarket | Clean Air
Segment Reporting [Line Items]
Revenues from external customers									0	0	0
Aftermarket | Powertrain
Segment Reporting [Line Items]
Revenues from external customers									0	0	0
Aftermarket | Ride Performance
Segment Reporting [Line Items]
Revenues from external customers									0	0	0
Aftermarket | Motorparts
Segment Reporting [Line Items]
Revenues from external customers									$ 3,167	$ 1,780	$ 1,251