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Distribution Restrictions (Detail) $ in Thousands	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Balance of permitted transfers to parent company	$ 4,199,834	$ 4,187,593
Debt ratio	7.0
Debt ratio related to actual position on senior credit facility	7.0
Available cumulative credit	$ 2,950,314
Secured Debt | Maximum
Debt Instrument [Line Items]
Secured debt ratio	4.5
Secured Debt | LAMAR MEDIA CORP
Debt Instrument [Line Items]
Secured debt ratio	4.5

X

- Definition

Amount of additional cumulative credit available for transfers to parent company under the terms of Lamar Media Corp.'s senior credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	lamr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Balance of permitted transfers to parent company allowed under the terms of Lamar Media Corp.'s senior subordinated and senior notes.

+ References

No definition available.

+ Details

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Namespace Prefix:	lamr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maximum actual holdings debt ratio.

+ References

No definition available.

+ Details

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Namespace Prefix:	lamr_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Maximum holding debt ratio for applicability of restriction on transfer.

+ References

No definition available.

+ Details

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Namespace Prefix:	lamr_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: