Fair Value Measurements - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 01, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on investments	$ (29,000,000)	$ (142,000,000)	$ 8,000,000
Net gains (losses) from foreign currency forward contracts	1,000,000	74,000,000	(8,000,000)
Impairment of goodwill	14,000,000	799,000,000	0
Goodwill	7,171,000,000	7,380,000,000	8,127,000,000
Intangible and other long-term asset impairment			0
Investments without readily determinable fair values	330,000,000	$ 330,000,000
Unrealized upward adjustment, cumulative	2,000,000
Unrealized downward adjustment, cumulative	105,000,000
Measurement Input, Long-term Revenue Growth Rate | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value estimates, percent				2.50%
Control Premium | Valuation, Market Approach
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value estimates, percent				20.00%
Revenue Multiple | Valuation, Market Approach
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value estimates, percent				350.00%
Measurement Input, Long Term EBITDA Growth Rate | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value estimates, percent				24.00%
Minimum | Level 3 | Measurement Input, Projected Revenues And Royalty Rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Intangible assets, indefinite-lived (excluding goodwill), measurement input		0.02
Maximum | Level 3 | Measurement Input, Projected Revenues And Royalty Rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Intangible assets, indefinite-lived (excluding goodwill), measurement input		0.08
Weighted Average | Weighted Average Cost of Capital | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value estimates, percent				9.00%
Weighted Average | Level 3 | Measurement Input, Projected Revenues And Royalty Rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Intangible assets, indefinite-lived (excluding goodwill), measurement input		0.07
Retail
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill	0	$ 559,000,000
Goodwill	6,462,000,000	6,505,000,000	7,049,000,000
Intangible and other long-term asset impairment		175,000,000
Trivago
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill	0	240,000,000
Goodwill	315,000,000	337,000,000	549,000,000
B2B
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill	14,000,000	0
Goodwill	394,000,000	538,000,000	529,000,000
Long-lived assets impairment charge	6,000,000
Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities, other-than-temporary impairments	0	134,000,000	2,000,000
Nonrecurring basis | Retail
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill		559,000,000
Goodwill		2,300,000,000
Intangible and other long-term asset impairment		175,000,000
Impairment of definite-lived intangible assets		35,000,000
Nonrecurring basis | Retail | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets impairment charge		21,000,000
Nonrecurring basis | Retail | Trade Names
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of indefinite-lived intangible assets		119,000,000
Nonrecurring basis | Trivago
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill		240,000,000
Foreign currency forward contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount of foreign currency derivatives	1,700,000,000
Foreign currency forward contracts, assets	3,000,000
Gross forward asset	12,000,000
Foreign currency forward contracts		14,000,000
Gross forward liability		23,000,000
Despegar.com Corp.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on investments	$ (29,000,000)	$ (6,000,000)	$ 10,000,000