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TRANSFORMATION COSTS	9 Months Ended
	Sep. 30, 2025
Restructuring and Related Activities [Abstract]
TRANSFORMATION COSTS	TRANSFORMATION COSTS In the fourth quarter of 2024, the Company began the implementation of the organizational changes that are expected to improve operating expense efficiency, increase organizational agility, free up resources that can be reinvested into further improving its offering to travelers and partners, and better position the Company for the long term (the "Transformation Program"). The Company currently expects that the restructuring costs and accelerated investments related to the Transformation Program will be incurred by the end of 2027 and anticipates these costs to primarily relate to expected and ongoing workforce reductions, technology investments, and professional fees. Some details of the Transformation Program are not yet final and remain subject to consultation with works councils, employee representative bodies, and other relevant organizations, legal requirements in multiple jurisdictions, and the Company completing its analysis of overall Transformation Program costs. Transformation Program related costs are recorded in "Transformation costs" in the Unaudited Consolidated Statements of Operations. For the three and nine months ended September 30, 2025, Transformation costs include employee termination benefits of $79 million and $105 million, respectively, and professional fees of $24 million and $67 million, respectively.

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- Definition

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

+ References

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-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4.e)
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 420
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