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Description of the Business and Significant Accounting Policies - Revenue and Expense Recognized for Advertising Barter Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accounting Policies [Abstract] |  |  |
Net revenues | $ 9,787 | $ 9,599 | $ 8,775
Direct advertising expenses | 4,698 | 4,832 | 4,044
General and administrative expenses | $ 4,525 | $ 4,044 | $ 3,904

X
- Definition Amount included in direct advertising expenses related to barter transactions for the period. + References No definition available. + Details
Name: | lamr_AdvertisingBarterTransactionDirectAdvertisingExpenses
Namespace Prefix: | lamr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount included in general and administrative expenses related to barter transactions for the period. + References No definition available. + Details
Name: | lamr_AdvertisingBarterTransactionGeneralAndAdministrativeExpenses
Namespace Prefix: | lamr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount included in advertising revenue related to barter transactions for the period. + References No definition available. + Details
Name: | lamr_AdvertisingBarterTransactionNetRevenue
Namespace Prefix: | lamr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration