Segment Information - Summary of Segment Information (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2025		Jun. 30, 2024		Jun. 30, 2025		Jun. 30, 2024
Segment Reporting Information [Line Items]
Total Revenue	[1]	$ 529		$ 497		$ 927		$ 892
Cost of sales	[2]	42		36	[3]	68		60	[3]
Marketing (formerly Selling and marketing)	[2]	218		204		389		366
Personnel (exclusive of stock-based compensation as shown separately below)	[2]	120		119		236		242
Technology	[2]	25		22		48		44
General and administrative		17	[2],[4]	19	[2],[5]	35	[2],[4]	37	[6]
Adjusted EBITDA		107		97		151		143
Depreciation and amortization		(23)		(21)		(44)		(42)
Stock-based compensation		(29)		(34)		(57)		(61)
Legal reserves, settlements and other		4	[7]	(4)	[8]	4	[7]	(14)	[9]
Restructuring and other related reorganization costs						(10)	[10]	(1)
Transaction related expenses				(2)				(3)
Operating income (loss)		59		36		44		22
Other income (expense), net		(12)		2		(17)		0
Income (loss) before income taxes		47		38		27		22
(Provision) benefit for income taxes		(11)		(14)		(2)		(57)
Net income (loss)		36		24		25		(35)
Intersegment
Segment Reporting Information [Line Items]
Total Revenue		0		0		0		0
Third-Party
Segment Reporting Information [Line Items]
Total Revenue		529		497		927		892
Reportable Segments | Brand Tripadvisor
Segment Reporting Information [Line Items]
Total Revenue	[1],[11]	242		250		461		490
Cost of sales	[2],[11]	9		8	[3]	14		15	[3]
Marketing (formerly Selling and marketing)	[2],[11]	82		68		143		129
Personnel (exclusive of stock-based compensation as shown separately below)	[2],[11]	62		65		127		135
Technology	[2],[11]	14		13		27		26
General and administrative	[11]	9	[2],[4]	12	[2],[5]	19	[2],[4]	24	[6]
Adjusted EBITDA	[11]	66		84		131		161
Restructuring and other related reorganization costs	[10],[11]					(9)
Reportable Segments | Viator
Segment Reporting Information [Line Items]
Total Revenue	[1],[12]	270		244		426		385
Cost of sales	[2],[12]	28		25	[3]	44		40	[3]
Marketing (formerly Selling and marketing)	[2],[12]	162		166		276		280
Personnel (exclusive of stock-based compensation as shown separately below)	[2],[12]	36		33		68		64
Technology	[2],[12]	8		6		14		12
General and administrative	[12]	4	[2],[4]	4	[2],[5]	9	[2],[4]	7	[6]
Adjusted EBITDA	[12]	32		10		15		(18)
Restructuring and other related reorganization costs	[10],[12]					0
Reportable Segments | TheFork
Segment Reporting Information [Line Items]
Total Revenue	[1]	54	[13]	42	[13]	101		83
Cost of sales	[2],[13]	5		3	[3]	10		5	[3]
Marketing (formerly Selling and marketing)	[2],[13]	11		9		31		23
Personnel (exclusive of stock-based compensation as shown separately below)	[2],[13]	22		21		41		43
Technology	[2],[13]	3		3		7		6
General and administrative	[13]	4	[2],[4]	3	[2],[5]	7	[2],[4]	6	[6]
Adjusted EBITDA		9	[13]	3	[13]	5		0
Restructuring and other related reorganization costs						(1)	[10]	(1)
Reportable Segments | Intersegment | Brand Tripadvisor
Segment Reporting Information [Line Items]
Total Revenue	[11]	37		39		61		66
Reportable Segments | Intersegment | Viator
Segment Reporting Information [Line Items]
Total Revenue	[12]	0		0		0		0
Reportable Segments | Intersegment | TheFork
Segment Reporting Information [Line Items]
Total Revenue		0	[13]	0	[13]	0		0
Reportable Segments | Third-Party | Brand Tripadvisor
Segment Reporting Information [Line Items]
Total Revenue	[11]	205		211		400		424
Reportable Segments | Third-Party | Viator
Segment Reporting Information [Line Items]
Total Revenue	[12]	270		244		426		385
Reportable Segments | Third-Party | TheFork
Segment Reporting Information [Line Items]
Total Revenue		54	[13]	42	[13]	101		83
Corporate and Eliminations
Segment Reporting Information [Line Items]
Total Revenue		(37)		(39)		(61)		(66)
Cost of sales	[2]	0		0	[3]	0		0	[3]
Marketing (formerly Selling and marketing)	[2]	(37)		(39)		(61)		(66)
Personnel (exclusive of stock-based compensation as shown separately below)	[2]	0		0		0		0
Technology	[2]	0		0		0		0
General and administrative		0	[2],[4]	0	[2],[5]	0	[2],[4]	0	[6]
Adjusted EBITDA		0		0		0		0
Depreciation and amortization		(23)		(21)		(44)		(42)
Stock-based compensation		(29)		(34)		(57)		(61)
Legal reserves, settlements and other		4	[7]	(4)	[8]	4	[7]	(14)	[9]
Transaction related expenses				(2)				(3)
Corporate and Eliminations | Intersegment
Segment Reporting Information [Line Items]
Total Revenue		(37)		(39)		(61)		(66)
Corporate and Eliminations | Third-Party
Segment Reporting Information [Line Items]
Total Revenue		$ 0		$ 0		$ 0		$ 0

[1] Our revenue is recognized primarily at a point in time for all reportable segments.

[2] The significant segment expense categories and amounts align with the segment-level information that is regularly provided to our CODM.

[3] Exclusive of $2 million in both the Brand Tripadvisor and Viator segments, which are included separately below in legal reserves, settlements and other.

[4] Exclusive of $4 million in the Brand Tripadvisor segment which is included separately below in legal reserves, settlements and other.

[5] Exclusive of $2 million in the Brand Tripadvisor segment, which is included separately below in transaction related expenses.

[6] Exclusive of $13 million in the Brand Tripadvisor segment which is included separately below in legal reserves, settlements and other and transaction related expenses.

[7] Represents a decrease of $4 million to a previously estimated accrual for the potential settlement of a regulatory related matter during the second quarter of 2025, reflected in general and administrative expenses on our unaudited condensed consolidated statement of operations. Refer to "Note 8: Commitments and Contingencies" for further information.

[8] This amount includes a one-time charge of $4 million during the second quarter of 2024, resulting from enacted tax legislation in Canada during June 2024 related to digital service taxes, which required retrospective application back to January 1, 2022. This amount represents a one-time retrospective liability for the periods prior to April 1, 2024, while all prospective periods are and will be included within adjusted EBITDA, respectively. This expense is reflected in cost of sales on our unaudited condensed consolidated statement of operations.

[9] Represents an estimated accrual for the potential settlement of a regulatory related matter of $10 million expensed during the first quarter of 2024 and is reflected in general and administrative expenses on our unaudited condensed consolidated statement of operations. Refer to "Note 8: Commitments and Contingencies" for further information. In addition, this amount included a one-time charge of $4 million during the second quarter of 2024, resulting from enacted tax legislation in Canada during June 2024 related to digital service taxes, which required retrospective application back to January 1, 2022. This amount represents a one-time retrospective liability for the periods prior to April 1, 2024, while all prospective periods are and will be included within adjusted EBITDA, respectively. This expense is reflected in cost of sales on our unaudited condensed consolidated statement of operations.

[10] Refer to “Note 5: Accrued Expenses and Other Current Liabilities” for information regarding restructuring and other related reorganization costs.

[11] Corporate general and administrative personnel costs of $2 million and $4 million for both the three and six months ended June 30, 2025 and 2024, respectively, were allocated to the Viator and TheFork segments.

[12] Includes allocated corporate general and administrative personnel costs from our Brand Tripadvisor segment of $1 million and $2 million for both the three and six months ended June 30, 2025 and 2024, respectively.

[13] Includes allocated corporate general and administrative personnel costs from our Brand Tripadvisor segment of $1 million and $2 million for both the three and six months ended June 30, 2025 and 2024, respectively.