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Acquisitions (Narrative) (Details) € in Millions, $ in Millions			3 Months Ended		6 Months Ended
	Feb. 13, 2019 EUR (€)	Feb. 13, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Feb. 13, 2019 USD ($)
Business Acquisition [Line Items]
Acquisition and other-related costs			$ 0.4	$ 0.8	$ 1.7	$ 32.0
Caprolactone Acquisition
Business Acquisition [Line Items]
Interest acquired	100.00%						100.00%
Payments to acquire businesses, gross	€ 578.9	$ 652.5
Total cash paid	€ 100.4						$ 113.1
Revenues			$ 31.6	$ 34.3	$ 67.9	$ 58.5
Total cash paid, less cash and restricted cash acquired		$ 537.9

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The combination of Acquisition-Related Costs and Inventory Step-Up amortization.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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