Leases Leases-Lease Assets and Liabilities (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Lease Liabilities, Current and Noncurrent [Abstract]
Operating Lease, Right-of-Use Asset	$ 46.6	$ 0.0
Finance Lease,Right-of-Use Asset	0.3
Lease, Right-of-Use Asset	46.9
Operating Lease, Liability, Current	16.7	0.0
Finance Lease, Liability, Current	0.2
Operating Lease, Liability, Noncurrent	30.3	$ 0.0
Finance Lease, Liability, Noncurrent	0.0
Present values of lease liabilities	47.2
Finance Lease, Right-of-Use Asset, Amortization	$ 0.5