Revenue - Segment Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 2,537		$ 5,111
Substrate Sales
Disaggregation of Revenue [Line Items]
Revenue recognized	621	$ 541	1,273	$ 1,088
Revenues	621		1,273
Value-Add Revenues
Disaggregation of Revenue [Line Items]
Revenues	1,916		3,838
Clean Air Division
Disaggregation of Revenue [Line Items]
Revenues	1,694		3,450
Clean Air Division | Substrate Sales
Disaggregation of Revenue [Line Items]
Revenues	621		1,273
Clean Air Division | Value-Add Revenues
Disaggregation of Revenue [Line Items]
Revenues	1,073		2,177
Ride Performance Division
Disaggregation of Revenue [Line Items]
Revenues	506		1,019
Ride Performance Division | Substrate Sales
Disaggregation of Revenue [Line Items]
Revenues	0		0
Ride Performance Division | Value-Add Revenues
Disaggregation of Revenue [Line Items]
Revenues	506		1,019
Aftermarket
Disaggregation of Revenue [Line Items]
Revenues	337		642
Aftermarket | Substrate Sales
Disaggregation of Revenue [Line Items]
Revenues	0		0
Aftermarket | Value-Add Revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 337		$ 642