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Debt (Fair Value Hedges) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Debt (Fair Value Hedges) (Details) - USD ($) $ in Millions	Nov. 30, 2020	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Freestanding Derviatives
Debt Instrument [Line Items]
Derivative liability			$ 1.0
Freestanding Derviatives \| Interest Expense
Debt Instrument [Line Items]
Gain (loss) on change in fair value of free-standing derivative instruments		$ 1.0	(5.0)	$ (4.4)
2022 Interest Rate Swap
Debt Instrument [Line Items]
Interest rate derivative liability at fair value			1.2
Gain (loss) on interest rate swaps		1.2	(6.0)	(5.2)
Net swap settlements
Debt Instrument [Line Items]
Gain (loss) on interest rate swaps		(2.2)	2.9	7.9
Hedged Senior Notes
Debt Instrument [Line Items]
Gain (loss) on interest rate swaps		$ (2.3)	$ 2.7	$ 5.2
Senior notes: May 2023
Debt Instrument [Line Items]
Interest rate		4.75%
Debt retired	$ 250.0