v3.26.1
Related Party Transactions and Parent Company Investment - Schedule of Parent Company Investment (Details) - Related Party - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]        
Net decrease in Parent company investment $ (1,806.0) $ (137.0) $ (1,764.0) $ (181.0)
Cash Pooling And General Financing Activities        
Related Party Transaction [Line Items]        
Net decrease in Parent company investment (1,886.0) (216.0) (1,916.0) (328.0)
Unbilled Corporate Allocations        
Related Party Transaction [Line Items]        
Net decrease in Parent company investment 33.0 24.0 60.0 45.0
Stock-Based Compensation        
Related Party Transaction [Line Items]        
Net decrease in Parent company investment 5.0 4.0 9.0 9.0
Assumed Income Tax Payments        
Related Party Transaction [Line Items]        
Net decrease in Parent company investment $ 42.0 $ 51.0 $ 83.0 $ 93.0