v3.26.3
Long-lived Assets (Property and Equipment, Net) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Property, Plant, and Equipment [Line Items]    
Total property and equipment, gross $ 18,319.7 $ 11,200.5
Accumulated depreciation (6,558.9) (5,930.2)
Total property and equipment, net 11,760.8 5,270.3
Distribution systems    
Property, Plant, and Equipment [Line Items]    
Total property and equipment, gross 12,485.1 7,189.1
Support equipment, buildings and land    
Property, Plant, and Equipment [Line Items]    
Total property and equipment, gross 4,020.1 2,941.2
CPE    
Property, Plant, and Equipment [Line Items]    
Total property and equipment, gross $ 1,814.5 $ 1,070.2