Financial Instruments and Fair Value Measurements - Schedule of Aggregate Principal and Fair Value Amount of Outstanding 2025 Senior Notes and 2026 Senior Notes (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Carrying value amount		$ 839	$ 836
Level 2 | 2025 Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount		500	500
Carrying value amount	[1]	497	495
Fair value amount	[2]	502	498
Level 2 | 2026 Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount		345	345
Carrying value amount	[3]	342	341
Fair value amount	[2]	$ 304	$ 281

[1] Net of $3 million and $5 million of unamortized debt issuance costs as of December 31, 2023 and 2022, respectively.

[2] We estimate the fair value of our outstanding 2025 Senior Notes and 2026 Senior Notes based on recently reported market transactions and/or prices for identical or similar financial instruments obtained from a third-party pricing source.

[3] Net of $3 million and $4 million of unamortized debt issuance costs as of December 31, 2023 and 2022, respectively.