Long-term Debt - Narrative (Details) - USD ($) $ in Millions	Aug. 23, 2023	Sep. 30, 2023
Debt Instrument
Face value		$ 3,923
2031 Unsecured Notes | Senior Notes
Debt Instrument
Face value	$ 550	$ 550
Net proceeds from issuance	$ 544
Rate(s)	7.50%	7.50%
Redemption price, percent of principal	100.00%
2025 Unsecured Notes | Senior Notes
Debt Instrument
Face value		$ 0
Rate(s)		8.625%
Outstanding debt redeemed	$ 550