Marketable Securities - Current and Non-current (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale
Current marketable securities	$ 53	$ 238
Non-current marketable securities	20	23
Total marketable securities	73	261
Commercial paper
Debt Securities, Available-for-sale
Current marketable securities	0	213
Certificates of deposit/time deposits
Debt Securities, Available-for-sale
Current marketable securities	49	21
U.S. municipal securities
Debt Securities, Available-for-sale
Current marketable securities	4	4
Non-current marketable securities	$ 20	$ 23