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Commitment and Contingencies - Narrative (Details)
3 Months Ended 7 Months Ended 60 Months Ended 80 Months Ended
Jul. 29, 2021
Displays
Jul. 28, 2021
Mar. 31, 2024
USD ($)
Displays
Dec. 31, 2020
USD ($)
Dec. 31, 2026
Apr. 01, 2028
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Other Commitments [Line Items]                
MTA equipment deployment costs     $ 1,100,000       $ 1,100,000 $ 426,800,000
Equipment Deployment Costs Percentage       30.00%        
Recoupment     0          
Impairment charges     9,100,000          
Standalone letters of credit and sublimit to revolving credit facility                
Other Commitments [Line Items]                
Letters of credit outstanding, amount     73,700,000          
Surety Bond                
Other Commitments [Line Items]                
Surety bonds outstanding     $ 172,600,000          
MTA Agreement                
Other Commitments [Line Items]                
Contract term 13 years 10 years            
Contract term extension option 5 years              
MTA Agreement | Subsequent event                
Other Commitments [Line Items]                
Revenue share percentage         65.00%      
Additional equipment deployment cost percentage           2.50%    
Metropolitan Transportation Authority ("MTA")                
Other Commitments [Line Items]                
Equipment Deployment Costs Percentage       70.00%        
Maximum | MTA Agreement | Subsequent event                
Other Commitments [Line Items]                
Decrease in revenue percentage           5.00%    
Maximum | Metropolitan Transportation Authority ("MTA")                
Other Commitments [Line Items]                
MTA equipment deployment costs       $ 50,700,000        
Minimum | Subsequent event                
Other Commitments [Line Items]                
Recoupment           $ 0    
MTA digital advertising screens on subway and train platforms                
Other Commitments [Line Items]                
Number of displays | Displays 5,433   5,118          
MTA smaller-format digital advertising screens rolling stock                
Other Commitments [Line Items]                
Number of displays | Displays 15,896   11,854          
MTA communication displays                
Other Commitments [Line Items]                
Number of displays | Displays 9,283   5,223          
MTA displays installed                
Other Commitments [Line Items]                
Number of displays | Displays     22,195          
Number of display additions | Displays     2,498