Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross	$ 2,465	$ 604
Accumulated amortization	(278)	(135)
Net	2,187	469
Amortization of Intangible Assets	148	39	$ 41
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2019	182
2020	182
2021	182
2022	182
2023	182
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	1,615	461
Accumulated amortization	(206)	(108)
Net	1,409	353
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross	547	0
Accumulated amortization	(17)	0
Net	530	0
Technology
Finite-Lived Intangible Assets [Line Items]
Gross	160	0
Accumulated amortization	(18)	0
Net	142	0
Long term supply contracts
Finite-Lived Intangible Assets [Line Items]
Gross	143	143
Accumulated amortization	(37)	(27)
Net	106	116
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Net	$ 6	$ 3