Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Tax Effect of Discontinued Operation			$ (1.5)	$ (2.5)
Loss on sale of discontinued operations, net of benefit for income taxes of $—, $1.0, $— and $1.4	$ 0.0	$ (4.6)	0.0	(5.7)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	0.0	(1.3)	0.0	(1.3)
Cash Provided by (Used in) Investing Activities, Discontinued Operations			0.0	2.7
Sale of Highway Products
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, General and Administrative Expense	3.0	3.9	6.9	12.8
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	(3.0)	(3.9)	(6.9)	(12.8)
Discontinued Operation, Tax Effect of Discontinued Operation	(0.7)	(0.5)	(1.5)	(2.5)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent, Total	$ (2.3)	(3.4)	$ (5.4)	(10.3)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax		(4.3)		(5.8)
Loss on sale of discontinued operations, net of benefit for income taxes of $—, $1.0, $— and $1.4		(3.3)		(4.4)
Sale of Highway Products | Proceeds from Sale of Discontinued Operations, Net of Cash Divested
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash Provided by (Used in) Investing Activities, Discontinued Operations		$ 2.7		$ 2.7