Cash, Cash Equivalents and Marketable Securities - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Cash, Cash Equivalents and Marketable Securities [Abstract]
Cash and cash equivalents	$ 201	$ 127	$ 184
Restricted cash (included in Other noncurrent assets)	3		3
Total cash, cash equivalents and restricted cash	$ 204	$ 130	$ 187	$ 209
Restricted Cash, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other noncurrent assets ($— and $6 from a related party)		Other noncurrent assets ($— and $6 from a related party)