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Debt - Holding Company Debt (Details) - Holding Company - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 28, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Apr. 30, 2021	Jan. 31, 2021	Jan. 31, 2020
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt	$ 1	$ (2)	$ 3	$ (4)
5.875% senior unsecured notes due 2022
Debt Instrument [Line Items]
Debt face amount							$ 455
Interest rate on debt instrument							6.25%
6.250% senior unsecured notes due 2022
Debt Instrument [Line Items]
Debt face amount					$ 1,350	$ 750
Interest rate on debt instrument					5.875%	6.25%
6.750% senior unsecured notes due 2024
Debt Instrument [Line Items]
Interest rate on debt instrument	6.75%	6.75%
4.750% senior unsecured note due 2024
Debt Instrument [Line Items]
Debt face amount					$ 455
Interest rate on debt instrument		4.75%			4.75%
4.750% senior unsecured notes due 2024
Debt Instrument [Line Items]
Debt face amount	$ 500
6.375% senior unsecured notes due 2025
Debt Instrument [Line Items]
Interest rate on debt instrument		6.375%
6.250% senior unsecured notes due 2026
Debt Instrument [Line Items]
Interest rate on debt instrument		6.25%
5.250% senior unsecured note due 2027
Debt Instrument [Line Items]
Debt face amount					$ 250		$ 600
Interest rate on debt instrument		5.25%			5.25%		5.25%
4.375% senior unsecured notes due 2029
Debt Instrument [Line Items]
Debt face amount						$ 750
Interest rate on debt instrument						4.375%

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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