Leasing - Supplemental Lease Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Supplemental lease information [Line Items]
Operating cash flows from finance leases	$ 0.3
Operating cash flows from operating leases	29.0
Financing cash flows from finance leases	$ 1.0
Weighted-average remaining lease term - finance leases	2 years 9 months 18 days
Weighted-average remaining lease term - operating leases	9 years 2 months 12 days
Weighted-average discount rate - finance leases	5.10%
Weighted-average discount rate - operating leases	6.10%