Debt - Tender Offer and Note Repurchases (Details) - USD ($) $ in Millions			3 Months Ended		9 Months Ended
	Aug. 22, 2024	Oct. 20, 2021	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt instrument
Net loss on early extinguishment of debt			$ 5	$ 0	$ 5	$ 0
2026 Senior Notes | Senior Notes (Unsecured)
Debt instrument
Repurchase face amount			300	$ 5	300	$ 5
Debt repurchases			303		303
Net loss on early extinguishment of debt			5		5
Write off of deferred debt issuance cost			$ 2		$ 2
Percentage of principal amount at which notes can be redeemed prior to their maturity date	7.125%
2026 Senior Notes | Senior Notes (Unsecured) | Twelve Months Beginning February 2024
Debt instrument
Percentage of principal amount at which notes can be redeemed prior to their maturity date		102.00%
2026 Senior Notes | Senior Notes (Unsecured) | Period Beginning February 2025
Debt instrument
Percentage of principal amount at which notes can be redeemed prior to their maturity date		100.00%