Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross	$ 2,484	$ 2,479
Accumulated amortization	(469)	(286)
Net	2,015	2,193
Amortization expense	186	148	$ 39
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020	167
2021	167
2022	167
2023	167
2024	159
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	1,621	1,615
Accumulated amortization	(331)	(206)
Net	1,290	1,409
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross	541	547
Accumulated amortization	(40)	(17)
Net	501	530
Technology
Finite-Lived Intangible Assets [Line Items]
Gross	158	160
Accumulated amortization	(41)	(18)
Net	117	142
Long term supply contracts
Finite-Lived Intangible Assets [Line Items]
Gross	150	143
Accumulated amortization	(48)	(37)
Net	102	106
Patents
Finite-Lived Intangible Assets [Line Items]
Gross	14	14
Accumulated amortization	(9)	(8)
Net	$ 5	$ 6

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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