Leases - Supplemental Cash Flow Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Supplemental cash flow information related to leases
Operating cash flows from operating leases	$ 27.1
Financing cash flows from finance leases	0.4
Right-of-use assets obtained in exchange for lease liabilities
Operating leases	19.8
Finance leases	$ 1.2