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Segment Reporting - ADJ EBITDA Reconciliations (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Interest Income (Expense), Nonoperating, Net $ (86.3) $ (94.4)
Depreciation and amortization 48.4 45.5
Other Nonoperating Income (Expense) (0.2) (21.6)
Stock-based compensation expense 10.2 10.1
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest 154.4 147.0
Operating Segments    
Adjusted EBITDA 439.4 462.4
Depreciation and amortization 39.0 36.2
Other Nonoperating Income (Expense) 15.1 25.3
Stock-based compensation expense 2.7 3.5
EES    
Adjusted EBITDA 142.6 161.8
Depreciation and amortization 12.2 11.1
Other Nonoperating Income (Expense) 4.4 5.1
CSS    
Adjusted EBITDA 158.5 131.2
Depreciation and amortization 19.0 18.1
Other Nonoperating Income (Expense) 10.9 19.4
UBS    
Adjusted EBITDA 138.3 169.4
Depreciation and amortization 7.8 7.0
Other Nonoperating Income (Expense) $ 0.2 $ 0.8