Discontinued Operations - Schedule of Income From Discontinued Operations, Net of Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations, net of taxes	$ (13.6)	$ 7.0	$ 64.1	$ 11.4
Discontinued Operations, Disposed of by Sale | Commercial and Industrial Lighting business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0.0	137.5	29.1	259.6
Cost of goods sold	0.0	105.9	27.7	201.9
Gross profit	0.0	31.6	1.4	57.7
Selling & administrative expenses	4.5	21.9	15.2	41.7
Operating (loss) income	(4.5)	9.7	(13.8)	16.0
(Loss) Gain on disposal of business	(7.7)	0.0	80.7	0.0
Other expense	(1.4)	(0.8)	(1.1)	(1.4)
(Loss) income from discontinued operations before income taxes	(13.6)	8.9	65.8	14.6
Provision for income taxes	0.0	1.9	1.7	3.2
(Loss) income from discontinued operations, net of taxes	$ (13.6)	$ 7.0	$ 64.1	$ 11.4