v3.26.1
Investments (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Dec. 31, 2025
Schedule of Investments [Line Items]            
Other current assets $ 558.2   $ 558.2     $ 756.8
ITV            
Schedule of Investments [Line Items]            
Ownership interest retained after disposal         50.00%  
VMO2 JV            
Schedule of Investments [Line Items]            
Revenue 131.9 $ 95.5 225.1 $ 184.0    
VMO2 JV | Related party            
Schedule of Investments [Line Items]            
Other current assets 65.8   65.8     79.3
VodafoneZiggo JV            
Schedule of Investments [Line Items]            
Revenue 56.7 $ 48.2 110.7 $ 94.3    
VodafoneZiggo JV | Related party            
Schedule of Investments [Line Items]            
Other current assets $ 40.8   $ 40.8     $ 42.7