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OTHER - Narrative (Details) € in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2023 EUR (€)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Business Acquisition [Line Items]
Matching contributions		$ 59	$ 55	$ 40
Accrued performance marketing liabilities		597	587
Accrued compensation liabilities		611	634
Pension-Related Litigation
Business Acquisition [Line Items]
Accruals for loss contingencies		$ 336	276
Etraveli Group
Business Acquisition [Line Items]
Termination fee related to an acquisition agreement	€ 85		$ 90

X

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for advertising of the entity's goods and services. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-Publisher FASB
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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-Publisher FASB
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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

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No definition available.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Name Accounting Standards Codification
-Section S99
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- Definition

Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

+ References

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-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
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Amount of loss contingency liability.

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-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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