Fair Value Measurements - Financial Instruments Measured at Fair Value (Details) - Recurring Basis - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Investments:
Total assets	$ 1,700	$ 859
Foreign currency forward contracts
Derivatives:
Foreign currency forward contracts	2	9
Cross-currency interest rate swaps
Derivatives:
Derivatives	25	8
Money market funds
Cash equivalents:
Cash equivalents	113	168
Term deposits and certificates of deposit
Cash equivalents:
Cash equivalents	163
Investments:
Investments	3
Term deposits
Cash equivalents:
Cash equivalents		71
Investments:
Investments		28
Commercial paper
Cash equivalents:
Cash equivalents	2
Investments:
Investments	2
Equity investments
Investments:
Investments	895	584
Corporate debt securities
Investments:
Investments	354
Asset-backed securities
Investments:
Investments	62
U.S. treasury securities
Investments:
Investments	70
U.S. agency securities
Investments:
Investments	8
Non-U.S. government securities
Investments:
Investments	3
Level 1
Investments:
Total assets	1,008	752
Level 1 | Foreign currency forward contracts
Derivatives:
Foreign currency forward contracts	0	0
Level 1 | Cross-currency interest rate swaps
Derivatives:
Derivatives	0	0
Level 1 | Money market funds
Cash equivalents:
Cash equivalents	113	168
Level 1 | Term deposits and certificates of deposit
Cash equivalents:
Cash equivalents	0
Investments:
Investments	0
Level 1 | Term deposits
Cash equivalents:
Cash equivalents		0
Investments:
Investments		0
Level 1 | Commercial paper
Cash equivalents:
Cash equivalents	0
Investments:
Investments	0
Level 1 | Equity investments
Investments:
Investments	895	584
Level 1 | Corporate debt securities
Investments:
Investments	0
Level 1 | Asset-backed securities
Investments:
Investments	0
Level 1 | U.S. treasury securities
Investments:
Investments	0
Level 1 | U.S. agency securities
Investments:
Investments	0
Level 1 | Non-U.S. government securities
Investments:
Investments	0
Level 2
Investments:
Total assets	692	107
Level 2 | Foreign currency forward contracts
Derivatives:
Foreign currency forward contracts	2	9
Level 2 | Cross-currency interest rate swaps
Derivatives:
Derivatives	25	8
Level 2 | Money market funds
Cash equivalents:
Cash equivalents	0	0
Level 2 | Term deposits and certificates of deposit
Cash equivalents:
Cash equivalents	163
Investments:
Investments	3
Level 2 | Term deposits
Cash equivalents:
Cash equivalents		71
Investments:
Investments		28
Level 2 | Commercial paper
Cash equivalents:
Cash equivalents	2
Investments:
Investments	2
Level 2 | Equity investments
Investments:
Investments	0	$ 0
Level 2 | Corporate debt securities
Investments:
Investments	354
Level 2 | Asset-backed securities
Investments:
Investments	62
Level 2 | U.S. treasury securities
Investments:
Investments	70
Level 2 | U.S. agency securities
Investments:
Investments	8
Level 2 | Non-U.S. government securities
Investments:
Investments	$ 3