Discontinued Operations - Results of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (Loss) from Discontinued Operations, Net of Tax	$ (4.2)	$ (0.1)	$ (88.1)	$ (20.3)
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	7.0	222.7	496.7	644.8
Cost of sales	6.6	170.7	375.9	500.2
Gross Profit	0.4	52.0	120.8	144.6
Selling and administrative expenses	0.5	27.0	40.7	81.6
Amortization of intangible assets	0.0	17.2	12.8	43.9
Loss on sale	3.9	0.0	(41.1)	0.0
Other operating expense, net	3.6	2.5	35.3	8.5
Income (Loss) from Discontinued Operations Before Income Taxes	(7.6)	5.3	73.1	10.6
Provision (benefit) for income taxes	(3.4)	5.4	161.2	30.9
Income (Loss) from Discontinued Operations, Net of Tax	(4.2)	(0.1)	(88.1)	(20.3)
Discontinued Operations, Disposed of by Sale | Specialty Vehicle Technologies
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	4.4	191.1	428.7	495.3
Cost of sales	4.2	140.4	319.1	379.1
Gross Profit	0.2	50.7	109.6	116.2
Selling and administrative expenses	0.3	18.8	35.6	44.8
Amortization of intangible assets	0.0	11.3	10.4	26.2
Loss on sale	3.9	0.0	(252.8)	0.0
Other operating expense, net	1.8	0.2	18.0	0.9
Income (Loss) from Discontinued Operations Before Income Taxes	(5.8)	20.4	298.4	44.3
Provision (benefit) for income taxes	(1.5)	8.2	168.2	38.2
Income (Loss) from Discontinued Operations, Net of Tax	(4.3)	12.2	130.2	6.1
Discontinued Operations, Disposed of by Sale | High Pressure Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	2.6	31.6	68.0	149.5
Cost of sales	2.4	30.3	56.8	121.1
Gross Profit	0.2	1.3	11.2	28.4
Selling and administrative expenses	0.2	8.2	5.1	36.8
Amortization of intangible assets	0.0	5.9	2.4	17.7
Loss on sale	0.0	0.0	211.7	0.0
Other operating expense, net	1.8	2.3	17.3	7.6
Income (Loss) from Discontinued Operations Before Income Taxes	(1.8)	(15.1)	(225.3)	(33.7)
Provision (benefit) for income taxes	(1.9)	(2.8)	(7.0)	(7.3)
Income (Loss) from Discontinued Operations, Net of Tax	$ 0.1	$ (12.3)	$ (218.3)	$ (26.4)