Derivatives - Balance Sheet Components (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Asset	$ 28	$ 39
Liability	13	49
Net Asset (Liability)	15	(10)
Not Designated as Hedges
Derivatives, Fair Value [Line Items]
Asset	28	20
Liability	8	33
Net Asset (Liability)	20	(13)
Not Designated as Hedges \| Other current liabilities \| Commodity
Derivatives, Fair Value [Line Items]
Asset	1	7
Liability	8	32
Net Asset (Liability)	(7)	(25)
Not Designated as Hedges \| Other noncurrent assets \| Interest Rate
Derivatives, Fair Value [Line Items]
Asset	27	10
Liability	0	0
Net Asset (Liability)	27	10
Not Designated as Hedges \| Other current assets \| Commodity
Derivatives, Fair Value [Line Items]
Asset		3
Liability		1
Net Asset (Liability)		2
Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Asset	0	19
Liability	5	16
Net Asset (Liability)	(5)	3
Cash Flow Hedges \| Other current liabilities \| Interest Rate
Derivatives, Fair Value [Line Items]
Asset	0
Liability	3
Net Asset (Liability)	(3)
Cash Flow Hedges \| Other noncurrent assets \| Interest Rate
Derivatives, Fair Value [Line Items]
Asset		19
Liability		0
Net Asset (Liability)		19
Cash Flow Hedges \| Deferred credits and other liabilities \| Interest Rate
Derivatives, Fair Value [Line Items]
Asset	0	0
Liability	2	16
Net Asset (Liability)	$ (2)	$ (16)

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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