v3.25.0.1
Fair Value Measurements (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Sep. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Deferred Compensation Investment $ 17.6 $ 16.3
Derivative Asset 14.3 5.3
Equity securities 43.8 35.7
Assets, Fair Value Disclosure 75.7 57.3
Deferred Compensation Liabilities 50.9 49.9
Derivative Liability 2.8 14.8
Other Liabilities, Fair Value Disclosure 53.7 64.7
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Deferred Compensation Investment 17.6 16.3
Derivative Asset 0.0 0.0
Equity securities 43.8 35.7
Assets, Fair Value Disclosure 61.4 52.0
Deferred Compensation Liabilities 0.0 0.0
Derivative Liability 0.0 0.0
Other Liabilities, Fair Value Disclosure 0.0 0.0
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Deferred Compensation Investment 0.0 0.0
Derivative Asset 14.3 5.3
Equity securities 0.0 0.0
Assets, Fair Value Disclosure 14.3 5.3
Deferred Compensation Liabilities 50.9 49.9
Derivative Liability 2.8 14.8
Other Liabilities, Fair Value Disclosure 53.7 64.7
Debt, Fair Value 6,801.1 6,880.7
Level 2 | 2.50% convertible senior notes | Senior Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt, Fair Value $ 676.6 $ 684.9