Financial Instruments and Fair Value Measurements - Additional Information (Details) - USD ($)	6 Months Ended	12 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Financial instruments, maturities period	90 days
Short-term marketable securities outstanding	$ 0	$ 0
Long-term marketable securities outstanding	0	0
Net gain related to forward contracts	$ 1,000,000
Foreign currency exchange contracts maturity period, maximum	90 days
Equity securities without readily determinable fair value	$ 2,000,000	14,000,000
Redemption value of shares in return for collateralized note receivable	10,000,000
Other Long-Term Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Redeemable noncontrolling interest, settlement amount	$ 20,000,000
Percentage of notes receivable due in 5 years	50.00%
Percentage of notes receivable due in 10 years	50.00%
Allowance for credit loss under ASC 326	$ 3,000,000
Net of accumulated allowance for credit losses, Carrying value	$ 14,000,000
Chelsea Investment Holding Company PTE, Ltd
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity method investment, ownership percentage	40.00%
Impairment loss on equity method investments	$ 0	0
Chelsea Investment Holding Company PTE, Ltd \| Non-Marketable Investments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity method investments	$ 39,000,000	$ 41,000,000
Customer Concentration Risk \| Sales \| Expedia
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Customer concentration risk		10.00%
Customer Concentration Risk \| Sales \| Booking
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Customer concentration risk		10.00%
Customer Concentration Risk \| Sales \| Expedia and Booking
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Customer concentration risk		33.00%

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Foreign exchange contracts translation maximum maturity period.

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Percentage of notes receivable due in ten years.

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Amount of allowance for credit loss on financing receivable, classified as current.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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Amount of investment in equity security without readily determinable fair value.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of investment in marketable security, classified as current.

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Amount of investment in marketable security, classified as noncurrent.

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Amount, after allowance for credit loss, of financing receivable, classified as current. Includes, but is not limited to, notes and loan receivable.

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Redemption value, as if currently redeemable, of redeemable noncontrolling interest for common shares, units or ownership interests classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date.

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Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date.

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