Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Accrued expenses	$ 12.4	$ 64.0
Warranty accrual	8.7	6.7
Deferred compensation	9.8	9.6
Allowances for doubtful accounts	5.4	3.2
Inventories	12.7	23.9
Deferred revenue	18.3	28.6
Pensions, post-retirement and other benefits	69.1	76.9
Tax credits	65.1	74.1
Net operating loss carryforwards (NOL's)	197.1	160.0
Capital loss carryforwards	3.1	2.6
State deferred taxes	8.8	19.8
Lease liability	32.8
Other	17.3	24.2
Deferred Tax Assets, Gross	460.6	493.6
Valuation allowances	(217.7)	(175.4)
Net deferred tax assets	242.9	318.2
Deferred tax liabilities
Property, plant and equipment, net	26.9	30.2
Goodwill and intangible assets	154.1	177.0
Undistributed earnings	30.0	20.6
Right-of-use assets	32.5	0.0
Deferred Tax Liabilities, Gross	243.5	227.8
Net deferred tax (liability)	$ (0.6)
Net deferred tax asset		$ 90.4