Comprehensive (Loss) Income - Reclassifications from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income Loss [Line Items]
Other expenses	$ 0.0	$ 0.0	$ 0.2	$ 0.0
Reclassifications, net of tax			0.7
Interest Rate Collars: Net Realized Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Reclassifications, net of tax			0.7
Reclassifications from Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Reclassifications before tax	0.6		1.0
Income tax benefit	0.2		0.3
Reclassifications, net of tax	0.4		0.7
Reclassifications from Accumulated Other Comprehensive Loss | Interest Rate Collars: Net Realized Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Other expenses	$ 0.6		$ 1.0