Revenues Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026		Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Billboard	$ 332.9		$ 310.7
Revenues	429.6		390.7
Static displays
Disaggregation of Revenue [Line Items]
Billboard	210.5		206.9
Transit	41.0		34.1
Digital displays
Disaggregation of Revenue [Line Items]
Billboard	97.9		92.3
Transit	44.7		35.6
Other
Disaggregation of Revenue [Line Items]
Billboard	24.5	[1]	11.5
Transit	9.3		8.0
Transit
Disaggregation of Revenue [Line Items]
Transit	95.0		77.7
Other Revenues
Disaggregation of Revenue [Line Items]
Transit	1.7		$ 2.3
Condemnations
Disaggregation of Revenue [Line Items]
Billboard	$ 13.5

[1] In the first quarter of 2026, includes revenues related to condemnations of $13.5 million