v3.26.3
Investments (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Schedule of Investments [Line Items]          
Other current assets $ 725.2   $ 725.2   $ 496.0
VMO2 JV          
Schedule of Investments [Line Items]          
Revenue 128.6 $ 95.7 353.7 $ 279.7  
VMO2 JV | Related party          
Schedule of Investments [Line Items]          
Other current assets 71.9   71.9   79.3
VodafoneZiggo JV          
Schedule of Investments [Line Items]          
Revenue $ 18.9 $ 56.1 $ 129.6 $ 150.4  
VodafoneZiggo JV | Related party          
Schedule of Investments [Line Items]          
Other current assets         $ 42.7