Comprehensive Income (Loss) - Reclassifications from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income Loss [Line Items]
Net realized loss	$ (7.2)	$ (3.4)	$ (13.9)	$ (8.0)
Reclassifications from Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Reclassifications before tax		0.1		0.7
Income tax benefit				0.2
Reclassifications, net of tax		0.1		0.5
Reclassifications from Accumulated Other Comprehensive Loss | Interest Rate Collars: Net Realized Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Net realized loss		$ 0.1		$ 0.7