Intangible Assets - Narrative (Details) - Intangible Assets $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($) Displays	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Intangible Asset, Finite-Lived [Line Items]
Gross	$ 2,429.8		$ 2,465.3
Amortization	$ 17.2	$ 17.1
Series of Individually Immaterial Asset Acquisitions
Intangible Asset, Finite-Lived [Line Items]
Intangible asset, useful life	18 years 4 months 24 days
Permits and leasehold agreements
Intangible Asset, Finite-Lived [Line Items]
Gross	$ 1,545.1		$ 1,538.1
Permits and leasehold agreements | Series of Individually Immaterial Asset Acquisitions
Intangible Asset, Finite-Lived [Line Items]
Gross	$ 7.7
Permits and leasehold agreements | Static and Digital Displays | Series of Individually Immaterial Asset Acquisitions
Intangible Asset, Finite-Lived [Line Items]
Approximate number of displays acquired | Displays	6