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Credit Facility (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Line of Credit Facility [Line Items]          
Long-term Line of Credit, Noncurrent, Net of Debt Issuance Costs $ 332.8   $ 332.8   $ 610.6
Line of Credit Facility, Maximum Borrowing Capacity 55.5   55.5    
Letters of Credit Outstanding, Amount 0.4   0.4   0.4
Uncommitted Facility, Maximum Borrowing Capacity 400.0   400.0    
Line of Credit [Member]          
Line of Credit Facility [Line Items]          
Unamortized Debt Issuance Expense 12.2   12.2   14.4
Long-term Line of Credit, Noncurrent, Net of Debt Issuance Costs 332.8   332.8   $ 610.6
Line of Credit Facility, Maximum Borrowing Capacity 3,300.0   3,300.0    
Line of Credit Facility, Average Outstanding Amount $ 1,575.7 $ 2,011.9 $ 1,446.6 $ 2,017.0  
Pricing on the Facility based on market rates     ("SOFR") plus 0.875% to 1.35%    
Description of Variable Rate Basis     SOFR    
Basis spread on variable rate (in hundredths)     0.98%    
Line of Credit Facility, Interest Rate During Period 5.90% 6.10% 6.10% 5.80%