Intangible Assets - Narrative (Details) - Intangible Assets	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($) Displays	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) Displays	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Finite-Lived Intangible Assets [Line Items]
Gross	$ 2,459,000,000		$ 2,459,000,000		$ 2,444,200,000
Amortization	17,600,000	$ 18,700,000	52,100,000	$ 53,600,000
Impairment charges	$ 0	$ 0	$ 0	17,900,000
Metropolitan Transportation Authority ("MTA")
Finite-Lived Intangible Assets [Line Items]
Impairment charges				$ 17,900,000
Series of Individually Immaterial Asset Acquisitions
Finite-Lived Intangible Assets [Line Items]
Intangible asset, useful life	18 years 1 month 6 days		18 years 1 month 6 days
Permits and leasehold agreements
Finite-Lived Intangible Assets [Line Items]
Gross	$ 1,536,700,000		$ 1,536,700,000		$ 1,535,900,000
Permits and leasehold agreements | Series of Individually Immaterial Asset Acquisitions
Finite-Lived Intangible Assets [Line Items]
Gross	$ 8,300,000		$ 8,300,000
Permits and leasehold agreements | Static and Digital Displays | Series of Individually Immaterial Asset Acquisitions
Finite-Lived Intangible Assets [Line Items]
Approximate number of displays acquired | Displays	12		12