Commitments and Contingencies - Asset Retirement Obligations (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Asset retirement obligation	$ 14	$ 14
Held-for-sale
Loss Contingencies [Line Items]
Liabilities held for sale	9
Accrued expenses and other current liabilities
Loss Contingencies [Line Items]
Asset retirement obligation	10	2
Deferred credits and other liabilities
Loss Contingencies [Line Items]
Asset retirement obligation	$ 4	$ 12

Amount classified as liabilities attributable to disposal group held for sale or disposed of.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant