v3.26.3
Share-based Compensation (Share-Based Compensation Expense) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 57.7 $ 46.6 $ 138.7 $ 129.4
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 $ 4.2 3.5 $ 11.0 9.9
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 53.5 43.1 127.7 119.5
Liberty Global        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 57.4 46.6 132.1 125.5
Non-performance-based incentive awards | Liberty Global        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 25.5 25.0 63.9 68.1
Performance-based incentive awards | Liberty Global        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 20.0 13.9 48.8 34.8
Other | Liberty Global        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 11.9 7.7 19.4 22.6
Other        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 0.3 $ 0.0 $ 6.6 $ 3.9