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Debt (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 01, 2023
Apr. 12, 2023
Sep. 30, 2023
Sep. 30, 2023
5.375% notes | Unsecured senior notes        
Debt Instrument [Line Items]        
Proceeds from issuance of debt   $ 350.0    
Interest rate   5.375%    
Note offering percent   99.59%    
Debt yield to maturity   5.468%    
Net proceeds   $ 345.7    
2.75% notes | Unsecured senior notes        
Debt Instrument [Line Items]        
Interest rate 2.75%      
Repayments of Unsecured Debt $ 275.0      
Revolving credit facility        
Debt Instrument [Line Items]        
Maximum borrowing capacity under revolving credit facility     $ 1,250.0 $ 1,250.0
Maximum amount outstanding under revolving credit facility     63.5 80.5
Weighted average borrowings outstanding     $ 37.3 $ 34.9
Weighted average interest rate, before amortization of debt fees     6.10% 5.70%
Revolving credit facility     $ 50.5 $ 50.5