Restructuring and Other Charges - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
	May 12, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring cost		$ 12	$ 20	$ 55	$ 52
Non Cash Charges Related To Restructuring Activity			1		3
Restructuring and related cost allowed to be excluded from the calculation of financial covenant ratios							$ 35
Restructuring and related cost and litigation costs allowed to be excluded from the calculation of financial covenant ratios	$ 150			106
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring cost		12	8	44	31
Selling, general, and administrative
Restructuring Cost and Reserve [Line Items]
Restructuring cost		0	11	10	18
Engineering, research, and development
Restructuring Cost and Reserve [Line Items]
Restructuring cost		0	0	1	0
Depreciation and amortization of other intangibles
Restructuring Cost and Reserve [Line Items]
Restructuring cost		0	$ 1	0	$ 3
Reduction in Structural Costs
Restructuring Cost and Reserve [Line Items]
Restructuring cost		4		13
Reduction in Structural Costs | Selling, general, and administrative
Restructuring Cost and Reserve [Line Items]
Restructuring cost		3		8
Reduction in Structural Costs | Other expenses
Restructuring Cost and Reserve [Line Items]
Restructuring cost		$ 1		1
Reduction in Structural Costs | Engineering, research, and development
Restructuring Cost and Reserve [Line Items]
Restructuring cost				$ 4
Forecast
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost allowed to be excluded from the calculation of financial covenant ratios						$ 25