Fair Value Measurements - Additional Information (Details) $ in Millions				3 Months Ended	12 Months Ended
	Dec. 31, 2022 USD ($)	Jun. 01, 2022	Nov. 01, 2021 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2022 EUR (€) instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net gains (losses) from foreign currency forward contracts					$ (66)	$ 1	$ 74
Loss on minority equity investments					345	29	142
Impairment of goodwill					0	14	799
Goodwill	$ 7,143				7,143	7,171	$ 7,380
Intangible and other long-term asset impairment					81
Carrying value of cost method investments	330				330	330
Cumulative unrealized upward adjustments	2				2
Cumulative unrealized downward adjustments	105				105
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]							Intangible and other long-term asset impairment
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]							Intangible and other long-term asset impairment
Measurement Input, Projected Revenues And Royalty Rates | Minimum | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Intangible assets, indefinite-lived (excluding goodwill), measurement input							0.02
Measurement Input, Projected Revenues And Royalty Rates | Maximum | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Intangible assets, indefinite-lived (excluding goodwill), measurement input							0.08
Measurement Input, Projected Revenues And Royalty Rates | Weighted Average | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Intangible assets, indefinite-lived (excluding goodwill), measurement input							0.07
B2B
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill						14
Goodwill	412				412	394	$ 538
Long-lived assets impairment charge						6
Retail
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill						0
Goodwill	6,433				6,433	6,462	6,505
Intangible and other long-term asset impairment							175
Trivago
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill						0
Goodwill	$ 298				298	315	337
Trivago | Trade Names
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of indefinite-lived intangible assets					81
Nonrecurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment losses related to a minority investment					0	0	134
Nonrecurring Basis | Retail
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill							559
Goodwill							2,300
Intangible and other long-term asset impairment							175
Impairment of definite-lived intangible assets							35
Nonrecurring Basis | Retail | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets impairment charge							21
Nonrecurring Basis | Retail | Trade Names
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of indefinite-lived intangible assets							119
Nonrecurring Basis | Trivago
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill							240
Equity investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Downward adjustments to annual amount					335
American Express Global Business Travel
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Initial fair value			$ 815
American Express Global Business Travel | Disposed of by Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity interest maintained			19.00%
Global Business Travel Group
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity interest maintained	16.00%	16.00%
Exchange ratio	1
Despegar.com Corp.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on minority equity investments					45	29	$ 6
American Express Global Business Travel | Equity investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Downward adjustments to annual amount				$ 2
Global Business Travel Group | Equity investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on minority equity investments					300
Foreign currency forward contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount of derivatives	$ 2,800				2,800
Foreign currency forward contracts, assets	15				15	3
Gross forward asset	29				29	$ 12
Cross-currency interest rate swaps | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount of derivatives | €								€ 300,000,000
Fixed-to fixed cross currency interest rate swaps entered into | instrument								2
Fair value of derivative, asset	$ 21				21
Gain on derivative recognized in interest expense					$ 5