Income Taxes - Schedule of Income before income tax as per jurisdictions (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Loss before income taxes and share of losses from equity method investments	$ (287)	$ (653)	$ (759)
U.S.
Income Taxes
Loss before income taxes and share of losses from equity method investments	(129)	(32)	(74)
U.K
Income Taxes
Loss before income taxes and share of losses from equity method investments	(95)	(441)	(529)
Other
Income Taxes
Loss before income taxes and share of losses from equity method investments	$ (63)	$ (180)	$ (156)

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
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-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
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-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8924-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599

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