v3.25.0.1

Summary of Significant Accounting Policies - Revenue Recognition (Details) - Tripadvisor - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Customer invoices period	30 days
Maximum amortization period for substantial majority of contract costs	1 year
Maximum subscription advertising service contact period		1 year
Capitalized contract costs	$ 3	$ 3
Contract cost amortization	1	1	$ 1
Capitalized contract costs impairment	$ 0	$ 0	$ 0
Period after traveler stays CPA revenue is recognized	2 months
Practical expedient, incremental costs	true
Practical expedient, remaining performance obligation	true

The substantial majority amortization period maximum

+ References

No definition available.

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Namespace Prefix:	ltrpa_
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Balance Type:	na
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- Definition

The length of time after the traveler stays that the cost-per-acquisition ("CPA") revenue is recognized.

+ References

No definition available.

+ Details

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Namespace Prefix:	ltrpa_
Data Type:	xbrli:durationItemType
Balance Type:	na
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- Definition

The length of time that customer invoices are generally due after the time of invoicing.

+ References

No definition available.

+ Details

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Namespace Prefix:	ltrpa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum length of the typical subscription advertising services contract.

+ References

No definition available.

+ Details

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Namespace Prefix:	ltrpa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479483/340-40-50-3

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

+ Details

Name:	us-gaap_CapitalizedContractCostImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479483/340-40-50-3

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Indicates (true false) whether practical expedient was elected to recognize incremental cost of obtaining contract as expense when incurred if amortization period would have been one year or less.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-22

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479483/340-40-50-5

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates (true false) whether optional exemption was applied not to disclose amount of transaction price allocated to and explanation of expected timing of revenue recognition for remaining performance obligation, when contract has expected duration of one year or less or right to consideration corresponds directly to performance completed.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-15

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=ltrpa_TripadvisorIncMember
Namespace Prefix:
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Balance Type:
Period Type:

Liberty TripAdvisor Holdings, Inc. 10-K