Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 1,037.3	$ 894.6	$ 3,125.6	$ 2,621.5
Segment EBIT:
Segment EBITDA	182.9	173.2	602.0	520.9
Corporate EBITDA	112.0	117.9	389.9	321.3
Recognition of net actuarial losses (gains)	(3.9)	11.9	(8.3)	3.1
Depreciation and amortization	(41.3)	(41.2)	(126.5)	(125.2)
Interest expense	(14.8)	(16.3)	(45.0)	(52.3)
Interest income	0.5	0.9	1.7	3.0
Bargain purchase price gain	0.3	0.0	0.9	0.0
Mobile Industries
Segment Reporting Information [Line Items]
Net sales	487.3	428.6	1,486.0	1,237.9
Segment EBIT:
Segment EBITDA	53.2	64.0	200.1	177.9
Process Industries
Segment Reporting Information [Line Items]
Net sales	550.0	466.0	1,639.6	1,383.6
Segment EBIT:
Segment EBITDA	129.7	109.2	401.9	343.0
Corporate Segment
Segment EBIT:
Corporate EBITDA	$ (11.7)	$ (10.6)	$ (34.9)	$ (28.2)