Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Share-Based Compensation - Cash-Settled Awards (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	4,402,738	1,878,220
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	1,451,422	1,878,220
Share-based compensation liability	$ 6,000,000	$ 3,000,000
Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	2,951,316	0
Share-based compensation liability	$ 10,000,000	$ 0
Cash Settled Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense - cash-settled (net of tax)	14,000,000	2,000,000	$ 3,000,000
Cash paid for cash-settled awards	9,000,000	$ 4,000,000	$ 7,000,000
Unrecognized compensation expense	$ 30,000,000
Unrecognized compensation expense period	2 years
Cash Settled Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential pay out, cash-settled award base on performance	0.00%
Cash Settled Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential pay out, cash-settled award base on performance	200.00%