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Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Recurring Basis - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Investments:
Total assets	$ 903	$ 839
Cross-currency interest rate swaps
Derivatives:
Derivatives	20	21
Foreign currency forward contracts
Derivatives:
Derivatives		15
Derivatives:
Foreign currency forward contracts	8
Money market funds
Cash equivalents:
Cash equivalents	135	3
Term deposits
Cash equivalents:
Cash equivalents	221	188
Investments:
Investments		48
Foreign treasury securities
Cash equivalents:
Cash equivalents	32
Equity investments
Investments:
Investments	495	564
Level 1
Investments:
Total assets	662	52
Level 1 | Cross-currency interest rate swaps
Derivatives:
Derivatives	0	0
Level 1 | Foreign currency forward contracts
Derivatives:
Derivatives		0
Derivatives:
Foreign currency forward contracts	0
Level 1 | Money market funds
Cash equivalents:
Cash equivalents	135	3
Level 1 | Term deposits
Cash equivalents:
Cash equivalents	0	0
Investments:
Investments		0
Level 1 | Foreign treasury securities
Cash equivalents:
Cash equivalents	32
Level 1 | Equity investments
Investments:
Investments	495	49
Level 2
Investments:
Total assets	241	787
Level 2 | Cross-currency interest rate swaps
Derivatives:
Derivatives	20	21
Level 2 | Foreign currency forward contracts
Derivatives:
Derivatives		15
Derivatives:
Foreign currency forward contracts	8
Level 2 | Money market funds
Cash equivalents:
Cash equivalents	0	0
Level 2 | Term deposits
Cash equivalents:
Cash equivalents	221	188
Investments:
Investments		48
Level 2 | Foreign treasury securities
Cash equivalents:
Cash equivalents	0
Level 2 | Equity investments
Investments:
Investments	$ 0	$ 515

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
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