Discontinued Operations - Income from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Summarized Financial Information of Discontinued Operations
Income from discontinued operations, net of tax	$ 0.0	$ 6.4
Disposed of by held for sale
Summarized Financial Information of Discontinued Operations
Depreciation expense, discontinued operations		0.3
Disposed of by held for sale \| Cryobiological products business
Summarized Financial Information of Discontinued Operations
Sales		19.2
Cost of sales		10.1
Selling, general and administrative expenses		1.4
Operating income		7.7
Income before income taxes from discontinued operations		7.7
Income tax expense		$ 1.3
Income from discontinued operations, net of tax	$ 6.4

Disposal Group, Including Discontinued Operations, Depreciation

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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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