v3.26.3
Revenue Recognition - Changes in Advances and Deferred Revenues (Detail) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
NCM    
Change in Contract with Customer Liability [Line Items]    
Amounts recognized as accounts receivable $ 4.9 $ 4.2
Other Deferred Revenues    
Change in Contract with Customer Liability [Line Items]    
Balance at January 1, 2026 [1] 265.5  
Amounts recognized as accounts receivable 3.5  
Annual common unit adjustment [1],[2] 0.0  
Cash received from customers in advance 318.2  
Interest accrued related to significant financing component [1] 0.0  
Revenue recognized during period (328.8)  
Foreign currency translation adjustments 0.2  
Balance at September 30, 2026 [1] 258.6 265.5
N C M Screen Advertising Advances    
Change in Contract with Customer Liability [Line Items]    
Balance at January 1, 2026 307.2  
Amounts recognized as accounts receivable 0.0  
Annual common unit adjustment [2] (0.5)  
Cash received from customers in advance 0.0  
Interest accrued related to significant financing component 15.4  
Revenue recognized during period (24.3)  
Foreign currency translation adjustments 0.0  
Balance at September 30, 2026 $ 297.8 $ 307.2
[1] Includes liabilities associated with outstanding gift cards and discount ticket vouchers, points, credits or rebates outstanding under the Company’s loyalty and subscription programs and revenue collected in advance for screen advertising and other promotional activities. Amounts are classified as accounts payable and accrued expenses on the condensed consolidated balance sheet.
[2] Represents amount paid to NCM pursuant to the 2025 common unit adjustment under the Common Unit Agreement.