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Financial Instruments and Fair Value - Schedule of Assets and Liabilities Measured at Fair Value Recurring Basis (Details)
$ in Millions
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Measurement Input, Risk Free Interest Rate | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input   0.040
Measurement Input, Risk Free Interest Rate | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input   0.047
Recurring fair value measurements    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swaps $ 0.2 $ 5.4
Debt securities   4.7
Total assets 1,121.8 963.5
Recurring fair value measurements | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swaps 0.0 0.0
Debt securities   0.0
Total assets 992.9 953.3
Recurring fair value measurements | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swaps 0.2 5.4
Debt securities   0.0
Total assets 128.9 5.4
Recurring fair value measurements | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swaps 0.0 0.0
Debt securities   4.7
Total assets 0.0 4.7
Cash | Recurring fair value measurements    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 185.9 133.4
Cash | Recurring fair value measurements | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 185.9 133.4
Cash | Recurring fair value measurements | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 0.0 0.0
Cash | Recurring fair value measurements | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 0.0 0.0
Money market mutual funds | Recurring fair value measurements    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 806.9 819.9
Money market mutual funds | Recurring fair value measurements | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 806.9 819.9
Money market mutual funds | Recurring fair value measurements | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 0.0 0.0
Money market mutual funds | Recurring fair value measurements | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 0.0 $ 0.0
Term deposits | Recurring fair value measurements    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 128.7  
Term deposits | Recurring fair value measurements | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 0.0  
Term deposits | Recurring fair value measurements | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 128.7  
Term deposits | Recurring fair value measurements | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value $ 0.0