v3.25.2
Debt (General Information) and (Financing Transactions) (Details)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Feb. 28, 2025
USD ($)
Feb. 28, 2025
EUR (€)
Jun. 30, 2025
USD ($)
group
subsidiary
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
group
subsidiary
Jun. 30, 2024
USD ($)
Debt Instrument [Line Items]            
Number of subsidiaries with the most outstanding debt | subsidiary     1   1  
Number of borrowing groups | group     2   2  
Losses on debt extinguishment, net     $ 0.9 $ 0.0 $ 8.9 $ 0.0
Secured Debt | Telenet Facility AU | Line of Credit            
Debt Instrument [Line Items]            
Debt instrument, face amount | €   € 500,000,000        
Repayments of lines of credit $ 588.1          
Debt issued, percent of par   99.75%        
Stated interest percentage   3.00%        
Secured Debt | Telenet Facility AU | Line of Credit | Minimum            
Debt Instrument [Line Items]            
Stated interest percentage   0.00%        
Telenet Credit Facility            
Debt Instrument [Line Items]            
Repayments of lines of credit 1,046.9 € 890,000,000        
Losses on debt extinguishment, net $ 8.0          
Telenet Credit Facility | Telenet Facility AU | Line of Credit            
Debt Instrument [Line Items]            
Repayments of lines of credit | €   € 500,000,000