v3.26.3
Goodwill And Intangible Assets - Summary of Intangible Assets, Accumulated Amortization and Weighted Average Remaining Lives (Details) - USD ($)
$ in Millions
Oct. 01, 2026
Jan. 01, 2026
Indefinite-Lived Intangible Assets [Line Items]    
Intangible assets, Gross carrying amount $ 578.2 $ 394.9
Intangible assets, Accumulated amortization (111.0) (86.1)
Intangible assets, Net $ 467.2 $ 308.8
ESA Party Agreements    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 14 years 4 months 24 days 15 years 1 month 6 days
Intangible assets, Gross carrying amount $ 223.5 $ 224.0
Intangible assets, Accumulated amortization (49.4) (40.3)
Intangible assets, Net $ 174.1 $ 183.7
Cinema Network Affiliates    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 12 years 10 months 24 days 13 years 7 months 6 days
Intangible assets, Gross carrying amount $ 75.0 $ 75.0
Intangible assets, Accumulated amortization (14.7) (11.2)
Intangible assets, Net $ 60.3 $ 63.8
Customer Relationships | Captivate    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 6 years  
Intangible assets, Gross carrying amount $ 40.9  
Intangible assets, Accumulated amortization (0.2)  
Intangible assets, Net $ 40.7  
Customer Relationships | NCM, LLC.    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 2 years 10 months 24 days 3 years 7 months 6 days
Intangible assets, Gross carrying amount $ 75.0 $ 75.0
Intangible assets, Accumulated amortization (39.3) (29.9)
Intangible assets, Net $ 35.7 $ 45.1
Trademark | NCM, LLC.    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 4 years 10 months 24 days 5 years 7 months 6 days
Intangible assets, Gross carrying amount $ 15.0 $ 15.0
Intangible assets, Accumulated amortization (5.9) (4.5)
Intangible assets, Net $ 9.1 $ 10.5
Datasets    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 1 year 1 year 9 months 18 days
Intangible assets, Gross carrying amount $ 0.8 $ 0.4
Intangible assets, Accumulated amortization (0.3) (0.1)
Intangible assets, Net $ 0.5 $ 0.3
Spotlight Cinema Exhibitors    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 11 years 1 month 6 days 11 years 10 months 24 days
Intangible assets, Gross carrying amount $ 4.9 $ 4.8
Intangible assets, Accumulated amortization (0.4) (0.1)
Intangible assets, Net $ 4.5 $ 4.7
Noncompetition Agreements | Spotlight Cinema Networks    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 4 years 1 month 6 days 4 years 10 months 24 days
Intangible assets, Gross carrying amount $ 0.4 $ 0.4
Intangible assets, Accumulated amortization (0.1) 0.0
Intangible assets, Net $ 0.3 $ 0.4
Trade Name | Spotlight Cinema Networks    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 7 years 1 month 6 days 7 years 10 months 24 days
Intangible assets, Gross carrying amount $ 0.3 $ 0.3
Intangible assets, Accumulated amortization (0.1) 0.0
Intangible assets, Net $ 0.2 $ 0.3
Trade Name | Captivate    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 14 years  
Intangible assets, Gross carrying amount $ 15.1  
Intangible assets, Accumulated amortization 0.0  
Intangible assets, Net $ 15.1  
Developed Technology | Captivate    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 3 years  
Intangible assets, Gross carrying amount $ 35.8  
Intangible assets, Accumulated amortization (0.4)  
Intangible assets, Net $ 35.4  
Installed Base | Captivate    
Indefinite-Lived Intangible Assets [Line Items]    
Weighted average remaining useful life 17 years  
Intangible assets, Gross carrying amount $ 91.5  
Intangible assets, Accumulated amortization (0.2)  
Intangible assets, Net $ 91.3