Intangible Assets Gross Carrying Amount and Accumulated Amortization of Finite-lived Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross	$ 2,466	$ 2,479
Accumulated amortization	(330)	(286)
Net	2,136	2,193
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	1,607	1,615
Accumulated amortization	(236)	(206)
Net	1,371	1,409
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross	541	547
Accumulated amortization	(23)	(17)
Net	518	530
Technology
Finite-Lived Intangible Assets [Line Items]
Gross	158	160
Accumulated amortization	(23)	(18)
Net	135	142
Long term supply contracts
Finite-Lived Intangible Assets [Line Items]
Gross	146	143
Accumulated amortization	(40)	(37)
Net	106	106
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	14	14
Accumulated amortization	(8)	(8)
Net	$ 6	$ 6