Credit Facilities (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)
Short-term Debt [Line Items]
Margin for base rate advances	0.125%	0.125%
Margin for Eurocurrency rate advances	1.125%	1.125%
Line of Credit Facility, Commitment Fee Percentage		0.125%
Asset Acquisition, Price of Acquisition, Expected		$ 200.0
Margin for SONIA rate advances	1.225%	1.225%
Annual rate for fronting fees accrued on letters of credit	0.25%	0.25%
Committed credit facility [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,500.0	$ 1,500.0
Line of Credit Facility, Available Capacity Increase Amount	250.0	250.0
Line of Credit Facility, Limit on Letters of Credit	50.0	50.0
Line of Credit Outstanding, Amount	0.0	0.0
Letters of Credit Outstanding, Amount	9.5	9.5
Line of Credit Facility, Remaining Borrowing Capacity	1,490.5	1,490.5
Uncommitted credit facility [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	794.9	794.9
Line of Credit Outstanding, Amount	20.5	$ 20.5
Line of Credit Facility, Average Outstanding Amount	$ 35.2
Short-term Debt, Weighted Average Interest Rate, over Time	8.60%