Leases - Components of Lease Expense (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Leases [Abstract]
Operating lease expenses	$ 15.0
Finance lease expenses:
Depreciation of finance ROU assets	1.0
Interest on lease liabilities	1.6
Total finance lease expense	2.6
Variable and short-term lease expense	4.4
Total lease expense	$ 22.0