Income Taxes Income Taxes - Deferred Taxes By Balance Sheet Account (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Accrued expenses	$ 64.0	$ 43.0
Deferred income taxes - assets	243.9	293.8
Deferred income taxes - liabilities	(221.6)	(287.1)
Net deferred tax asset	22.3	6.7
Warranty accrual	6.7	13.5
Deferred compensation	9.6	10.6
Allowances for doubtful accounts	3.2	3.8
Inventories	23.9	14.4
Deferred revenue	28.6	38.1
Pensions, post-retirement and other benefits	76.9	82.6
Tax credits	74.1	81.9
Net operating loss carryforwards (NOL's)	160.0	125.9
Capital loss carryforwards	2.6	2.6
State deferred taxes	19.8	17.4
Other	0.0	0.8
Deferred Tax Assets, Gross	469.4	434.6
Valuation allowance	175.4	105.6
Net deferred tax assets	294.0	329.0
Deferred tax liabilities
Property, plant and equipment, net	3.5	1.2
Goodwill and intangible assets	245.9	302.8
Undistributed earnings	20.6	16.0
Other	1.7	2.3
Net deferred tax liabilities	$ 271.7	$ 322.3