v3.26.1
Debt (Components of Debt) (Details)
€ in Millions, $ in Millions
Jun. 30, 2026
USD ($)
Jun. 30, 2026
EUR (€)
Dec. 31, 2025
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Debt Instrument [Line Items]          
Weighted average interest rate 5.14% 5.14%      
Unused borrowing capacity, amount $ 827.5        
Total debt before deferred financing costs, discounts and premiums 8,343.1   $ 8,584.8    
Deferred financing costs, discounts and premiums, net (21.4)   (23.0)    
Total carrying amount of debt 8,321.7   8,561.8    
Finance lease obligations 28.6   33.1    
Total debt and finance lease obligations 8,350.3   8,594.9    
Current portion of debt and finance lease obligations (620.4)   (764.0)    
Long-term debt and finance lease obligations $ 7,729.9   7,830.9    
Telenet Credit Facility          
Debt Instrument [Line Items]          
Weighted average interest rate 5.27% 5.27%      
Total debt before deferred financing costs, discounts and premiums $ 4,577.8   4,748.0    
Telenet Credit Facility | Sunrise Holding Revolving Facility          
Debt Instrument [Line Items]          
Unused borrowing capacity, amount 713.4 € 625.0      
Available to borrow 713.4 625.0      
Available to loan or distribute 713.4 625.0      
Telenet Credit Facility | Sunrise Holding Revolving Facility | Upon completion of the relevant compliance reporting requirements          
Debt Instrument [Line Items]          
Unused borrowing capacity, amount 713.4 625.0      
Available to loan or distribute $ 713.4 € 625.0      
Telenet Senior Secured Notes          
Debt Instrument [Line Items]          
Weighted average interest rate 4.72% 4.72%      
Total debt before deferred financing costs, discounts and premiums $ 1,588.0   1,633.7    
VM Ireland Credit Facility          
Debt Instrument [Line Items]          
Weighted average interest rate 5.70% 5.70%      
Unused borrowing capacity, amount $ 114.1 € 100.0      
Total debt before deferred financing costs, discounts and premiums 1,027.3   1,056.2    
VM Ireland Credit Facility | Sunrise Holding Revolving Facility          
Debt Instrument [Line Items]          
Unused borrowing capacity, amount 114.1 100.0      
Available to borrow 114.1 100.0      
Available to loan or distribute 114.1 100.0      
VM Ireland Credit Facility | Sunrise Holding Revolving Facility | Upon completion of the relevant compliance reporting requirements          
Debt Instrument [Line Items]          
Unused borrowing capacity, amount 114.1 100.0      
Available to loan or distribute $ 114.1 € 100.0      
Vendor financing          
Debt Instrument [Line Items]          
Weighted average interest rate 4.41% 4.41%      
Total debt before deferred financing costs, discounts and premiums $ 339.6   365.9 $ 385.2 $ 355.9
Other          
Debt Instrument [Line Items]          
Weighted average interest rate 4.86% 4.86%      
Total debt before deferred financing costs, discounts and premiums $ 810.4   $ 781.0