Discontinued Operations - Results of Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 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	$ 96.3	$ (24.6)	$ (83.9)	$ (20.2)
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	187.0	239.0	489.7	422.1
Cost of sales	141.8	187.6	369.3	329.5
Gross Profit	45.2	51.4	120.4	92.6
Selling and administrative expenses	17.5	38.6	40.2	54.6
Amortization of intangible assets	0.9	18.2	12.8	26.7
Loss (gain) on sale	(248.3)	0.0	(45.0)	0.0
Other operating expense (income), net	16.6	1.8	31.7	6.0
Income (Loss) from Discontinued Operations Before Income Taxes	258.5	(7.2)	80.7	5.3
Discontinued Operation, Tax Effect of Discontinued Operation	162.2	17.4	164.6	25.5
Income (Loss) from Discontinued Operations, Net of Tax	96.3	(24.6)	(83.9)	(20.2)
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	184.0	217.5	424.3	304.2
Cost of sales	137.9	166.4	314.9	238.7
Gross Profit	46.1	51.1	109.4	65.5
Selling and administrative expenses	16.9	18.2	35.3	26.0
Amortization of intangible assets	0.9	12.3	10.4	14.9
Loss (gain) on sale	(256.7)	0.0	(256.7)	0.0
Other operating expense (income), net	9.2	(0.1)	16.2	0.7
Income (Loss) from Discontinued Operations Before Income Taxes	275.8	20.7	304.2	23.9
Discontinued Operation, Tax Effect of Discontinued Operation	162.8	29.2	169.7	30.0
Income (Loss) from Discontinued Operations, Net of Tax	113.0	(8.5)	134.5	(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	3.0	21.5	65.4	117.9
Cost of sales	3.9	21.2	54.4	90.8
Gross Profit	(0.9)	0.3	11.0	27.1
Selling and administrative expenses	0.6	20.4	4.9	28.6
Amortization of intangible assets	0.0	5.9	2.4	11.8
Loss (gain) on sale	8.4	0.0	211.7	0.0
Other operating expense (income), net	7.4	1.9	15.5	5.3
Income (Loss) from Discontinued Operations Before Income Taxes	(17.3)	(27.9)	(223.5)	(18.6)
Discontinued Operation, Tax Effect of Discontinued Operation	(0.6)	(11.8)	(5.1)	(4.5)
Income (Loss) from Discontinued Operations, Net of Tax	$ (16.7)	$ (16.1)	$ (218.4)	$ (14.1)