v3.26.1
Related Party Transactions - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 02, 2026
Jun. 26, 2025
Jul. 02, 2026
Jun. 26, 2025
Apr. 02, 2026
Jan. 01, 2026
Dec. 31, 2013
Related Party Transaction [Line Items]              
Receivables, net of allowance $ 62.0   $ 62.0     $ 96.5  
AC JV Cash and Accrued Distributions 0.1 $ 0.3 0.3 $ 0.3      
AC JV, LLC              
Related Party Transaction [Line Items]              
Investment in AC JV, LLC, Percentage             32.00%
Investment 1.1   1.1     0.8  
AC JV, LLC | NCM, LLC.              
Related Party Transaction [Line Items]              
Investment in AC JV, LLC, Percentage             4.00%
Investment 1.1   1.1     0.8  
Equity in earnings of non-consolidated entities 0.4 $ 0.6 0.2 $ 0.3      
MMC LP              
Related Party Transaction [Line Items]              
Investment in AC JV, LLC, Percentage         10.60%    
Recognized revenue related to advertising services provided in exchange for equity interests 0.0   0.3        
Investment 1.8   1.8     1.7  
Cost method investment 0.3   0.3     0.0  
Equity in earnings of non-consolidated entities $ 0.1   $ 0.1        
Looking Glass Media              
Related Party Transaction [Line Items]              
Investment in AC JV, LLC, Percentage 25.00%   25.00%        
Recognized revenue related to advertising services provided in exchange for equity interests $ 0.0   $ 0.1        
Receivables, net of allowance $ 0.2   $ 0.2     $ 0.3