Discontinued Operations - Schedule of Income (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net Loss from discontinued operations, net of tax	$ (2.5)	$ (63.8)	$ (3.9)	$ (56.5)
Loss Per Share
Basic (in dollars per share)	$ (0.05)	$ (1.37)	$ (0.08)	$ (1.21)
Diluted (in dollars per share)	$ (0.05)	$ (1.37)	$ (0.08)	$ (1.21)
RH Business \| Disposed of by sale
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net Sales	$ 13.6	$ 30.4	$ 30.5	$ 62.8
Cost of products sold	15.6	18.6	31.5	37.9
Gross Profit	(2.0)	11.8	(1.0)	24.9
Research and development	0.0	0.2	0.0	0.6
Selling and general expenses	0.0	3.8	0.0	7.7
Pretax loss on classification as discontinued operations	0.0	72.3	0.0	72.3
Other expense, net	1.4	0.1	4.3	0.2
Loss from discontinued operations before income taxes	(3.4)	(64.6)	(5.3)	(55.9)
Income tax benefit (provision) from discontinued operations	0.9	0.8	1.4	(0.6)
Net Loss from discontinued operations, net of tax	$ (2.5)	$ (63.8)	$ (3.9)	$ (56.5)
Loss Per Share
Basic (in dollars per share)	$ (0.05)	$ (1.37)	$ (0.08)	$ (1.21)
Diluted (in dollars per share)	$ (0.05)	$ (1.37)	$ (0.08)	$ (1.21)

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Disposal Group, Including Discontinued Operations, Research And Development Expense

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Amount before tax of an increase (decrease) to a gain (loss) previously reported in discontinued operations in a prior period.

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Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation.

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Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation.

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of gross profit attributable to disposal group, including, but not limited to, discontinued operation.

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Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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