Leases - Supplemental Cash Flow Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Leases [Abstract]
Operating Cash Flows from Operating Lease (Fixed Payments)	$ 15.1
Operating Cash Flows from Operating Lease (Liability Reduction)	13.3
Financing Cash Flows from Finance Leases	0.5
Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities	$ 19.1