v3.26.1
Share-based Compensation (Share-Based Compensation Expense) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 43.9 $ 49.4 $ 81.0 $ 82.8
Percent of annual incentive compensation receivable in shares 100.00%   100.00%  
Income Statement Location [Axis]: us-gaap:OtherCostAndExpenseOperating        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 3.6 3.5 $ 6.8 6.4
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 40.3 45.9 74.2 76.4
Liberty Global        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 39.6 45.5 74.7 78.9
Non-performance based incentive awards | Liberty Global        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 16.6 21.3 38.4 43.1
Performance-based incentive awards | Liberty Global        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 18.5 15.4 28.8 20.9
Other | Liberty Global        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 4.5 8.8 7.5 14.9
Other        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 4.3 $ 3.9 $ 6.3 $ 3.9