Fair Value Measurements and Disclosures - Assets Measured on Recurring Basis or Disclosed at Fair Value (Details) - Recurring Fair Value Measurements [Member] - USD ($) $ in Millions		Sep. 30, 2023	Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure		$ 388	$ 543
Investments, Fair Value Measurement or Disclosure		2,001	2,022
Long-term bank deposits and notes		1,237
Total assets, Fair Value Measurement or Disclosure		3,688	3,340
Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure		11	88
Investments, Fair Value Measurement or Disclosure		27
Total assets, Fair Value Measurement or Disclosure		100	183
Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure		377	455
Investments, Fair Value Measurement or Disclosure		1,974	2,022
Total assets, Fair Value Measurement or Disclosure		3,588	3,157
Bank Time Deposits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure		377	355
Investments, Fair Value Measurement or Disclosure		1,622	1,434
Long-term bank deposits and notes		879	680
Bank Time Deposits [Member] | Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure		377	355
Investments, Fair Value Measurement or Disclosure		1,622	1,434
Long-term bank deposits and notes		879	680
Money Market Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure		11	59
Money Market Funds [Member] | Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure		11	59
Fixed Income Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure	[1]		129
Investments, Fair Value Measurement or Disclosure	[1]	200	500
Long-term bank deposits and notes	[1]	358
Fixed Income Debt Securities [Member] | Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure	[1]		29
Fixed Income Debt Securities [Member] | Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents, Fair Value Measurement or Disclosure	[1]		100
Investments, Fair Value Measurement or Disclosure	[1]	200	500
Long-term bank deposits and notes	[1]	358
Investment in Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments: Investment in equity securities		62	95
Investment in Equity Securities [Member] | Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments: Investment in equity securities		62	95
Structured Deposits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments, Fair Value Measurement or Disclosure		152	88
Structured Deposits [Member] | Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments, Fair Value Measurement or Disclosure		152	$ 88
Variable Return Investments [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments, Fair Value Measurement or Disclosure		27
Variable Return Investments [Member] | Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments, Fair Value Measurement or Disclosure		$ 27

[1] Classified as held-to-maturity investments and measured at amortized cost.