The following table summarizes our goodwill activity by reportable segment for the periods presented:


	Brand Tripadvisor		Viator			TheFork			Total
	(in millions)
Balance as of December 31, 2022	$	599	$	119		$	104		$	822
Foreign currency translation adjustments		2		1			4			7
Balance as of December 31, 2023	$	601	$	120		$	108		$	829
Foreign currency translation adjustments		—		(3	)		(12	)		(15	)
Balance as of December 31, 2024	$	601	$	117		$	96		$	814

There were no goodwill impairment charges recognized on our consolidated statements of operations during the years ended December 31, 2024, 2023, or 2022. Refer to “Note 2: Significant Accounting Policies” for discussion regarding the Company’s 2024 goodwill impairment assessment. As of both December 31, 2024 and 2023, accumulated goodwill impairment losses totaled $3 million, which was associated with the Brand Tripadvisor segment.

Intangibles

Intangible assets, acquired in business combinations and recorded at fair value on the date of purchase, consisted of the following as of the dates presented:


	December 31,
	2024			2023
	(in millions)
Intangible assets with definite lives	$	195		$	221
Less: accumulated amortization		(189	)		(208	)
Intangible assets with definite lives, net		6			13
Intangible assets with indefinite lives (1)		30			30
Total	$	36		$	43

(1)

Indefinite-lived intangible assets include trade names and trademarks for Brand Tripadvisor.

Amortization expense for definite-lived intangible assets was $6 million, $9 million, and $13 million, for the years ended December 31, 2024, 2023 and 2022, respectively.

There were no impairment charges recognized to our consolidated statements of operations for the years ended December 31, 2024, 2023 and 2022 related to our intangible assets. Refer to “Note 2: Significant Accounting Policies” for discussion regarding the Company’s 2024 indefinite-lived intangible impairment assessment.

The following table presents the components of our intangible assets with definite lives as of the dates presented:


			December 31, 2024							December 31, 2023
	Weighted Average		Gross					Net		Gross					Net
	Remaining Life		Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
	(in years)		Amount		Amortization			Amount		Amount		Amortization			Amount
			(in millions)							(in millions)
Trade names and trademarks		—	$	44	$	(44	)	$	—	$	48	$	(45	)	$	3
Customer lists and supplier relationships		2.9		89		(84	)		5		97		(90	)		7
Subscriber relationships		—		22		(22	)		—		34		(33	)		1
Technology and other		0.9		40		(39	)		1		42		(40	)		2
Total		2.5	$	195	$	(189	)	$	6	$	221	$	(208	)	$	13

Our definite-lived intangible assets are being amortized on a straight-line basis. The straight-line method of amortization is currently our best estimate, or approximates to date, the distribution of the economic use of these intangible assets.

The estimated amortization expense for intangible assets with definite lives for each of the next five years, and the expense thereafter, assuming no subsequent impairment of the underlying assets or change in estimate of remaining lives, is expected to be as follows (in millions):


2025	$	3
2026		2
2027		1
2028		—
2029		—
2030 and thereafter		—
Total	$	6