Investments (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Short-term investments:
Total short-term investments	$ 552	$ 927
Long-term investments:
Equity Method Investments	66	63
Long-term Investments, Total	443	463
Short-term Investments [Member]
Short-term investments:
Equity investment security	26	26
Available-for-sale investment securities	448	310
Held-to-maturity investment securities	38	37
Time Deposits	40	554
Short-term Investments [Member] \| Certificates of deposit and commercial paper
Short-term investments:
Available-for-sale investment securities	448
Long-term investments:
Debt Securities, Available-for-sale, Amortized Cost	448
Short-term Investments [Member] \| Commercial paper
Short-term investments:
Available-for-sale investment securities		310
Long-term investments:
Debt Securities, Available-for-sale, Amortized Cost		310
Long-term investments [Member]
Long-term investments:
Equity Method Investments	68	66
Restricted investments	$ 375	$ 397

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