Revenue Recognition - Consolidated Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenue Recognition [Line Items]
Net sales	$ 3,781	$ 3,486	$ 3,486
Cost of sales, exclusive of depreciation and amortization	2,181	1,902
Selling, general and administrative	906	875	875
Other income	(24)	(24)
Income before income taxes from continuing operations	421	$ 446	446
As Reported
Revenue Recognition [Line Items]
Net sales			3,486
Selling, general and administrative			881
Income before income taxes from continuing operations			440
Adjustments
Revenue Recognition [Line Items]
Net sales			0
Selling, general and administrative			(6)
Income before income taxes from continuing operations			$ 6
Accounting Standards Update 2014-09 | As Reported
Revenue Recognition [Line Items]
Net sales	3,785
Cost of sales, exclusive of depreciation and amortization	2,156
Selling, general and administrative	933
Other income	(22)
Income before income taxes from continuing operations	421
Accounting Standards Update 2014-09 | Adjustments
Revenue Recognition [Line Items]
Net sales	4
Cost of sales, exclusive of depreciation and amortization	(25)
Selling, general and administrative	27
Other income	2
Income before income taxes from continuing operations	$ 0