Leases Lease Costs (Details 3) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018
Leases [Abstract]
Operating Lease, Cost		$ 27.5	[1]	$ 23.3
Finance Lease Cost	[2]	0.3		0.4
Lease, Cost		27.8		$ 23.7
Short-term Lease, Cost		3.1
Variable Lease, Cost		$ 2.4

[1] Includes short-term lease costs of $3.1 million for the year ended December 31, 2019, and variable lease costs of $2.4 million for the year ended December 31, 2019.

[2] Includes amortization of leased assets and interest on lease liabilities.