Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Assets	$ 2,887.6		$ 2,887.6		$ 3,001.4
Net sales to external customers:
Net sales	728.0	$ 789.2	1,450.5	$ 1,526.0
Segment EBIT:
Total EBIT for reportable segments	92.7	107.1	173.3	219.6
Unallocated corporate expenses	(14.0)	(17.2)	(28.2)	(36.9)
Defined Benefit Plan, Settlements, Plan Assets	4.4	0.0	219.6	0.0
Interest expense	(8.4)	(5.8)	(16.4)	(11.3)
Investment Income, Interest	0.7	1.1	1.4	2.1
Income From Continuing Operations Before Income Taxes	66.6	85.2	(89.5)	173.5
Mobile Industries [Member]
Net sales to external customers:
Net sales	388.6	447.2	781.6	868.9
Segment EBIT:
Total EBIT for reportable segments	36.0	42.3	71.4	106.6
Process Industries [Member]
Net sales to external customers:
Net sales	339.4	342.0	668.9	657.1
Segment EBIT:
Total EBIT for reportable segments	$ 56.7	$ 64.8	$ 101.9	$ 113.0