Acquisitions and Divestitures - Ranir Global Holdings, LLC Acquisition (Details) - USD ($) $ in Millions			3 Months Ended	6 Months Ended	12 Months Ended
		Jul. 01, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Cash consideration - net of cash acquired					$ 747.7	$ 0.0	$ 0.4
Assets acquired:
Goodwill			$ 4,116.7	$ 4,116.7	4,116.7	3,979.8	4,175.4
Ranir Global Holdings, LLC
Business Acquisition [Line Items]
Percentage of interest acquired		100.00%
Base consideration transferred		$ 750.0
Cash consideration - net of cash acquired		747.7
General transaction costs					15.6
Net sales since acquisition				151.4
Net income since acquisition				7.6
Inventory costs stepped up to acquisition date fair value				5.7
Purchase price paid		759.2
Assets acquired:
Cash and cash equivalents		11.5
Accounts receivable		40.6
Inventories		59.0
Prepaid expenses and other current assets		4.0
Property, plant and equipment, net		40.8
Operating lease assets		3.7
Goodwill		291.1
Total intangible assets		389.3
Other non-current assets		2.7
Total assets		842.7
Liabilities assumed:
Accounts payable		17.6
Other accrued liabilities		7.7
Payroll and related taxes		5.5
Accrued customer programs		5.7
Deferred income taxes		44.2
Other non-current liabilities		2.8
Total liabilities		83.5
Net assets acquired		759.2
Adjustment to the valuation of identifiable intangible assets			46.6
Adjustment to the valuation of deferred tax liabilities			11.6
Adjustment to the valuation of miscellaneous assets			1.3
Goodwill, previously reported		327.4
In-process research and development | Ranir Global Holdings, LLC
Assets acquired:
Indefinite-lived intangibles		39.7
CSCA
Assets acquired:
Goodwill			1,899.1	1,899.1	1,899.1	1,713.7	1,847.4
CSCA | Ranir Global Holdings, LLC
Assets acquired:
Goodwill			223.0	223.0	223.0
CSCI
Assets acquired:
Goodwill	[1]		1,203.7	1,203.7	1,203.7	$ 1,151.3	$ 1,205.7
CSCI | Ranir Global Holdings, LLC
Assets acquired:
Goodwill			$ 68.1	$ 68.1	$ 68.1
Developed product technology, formulations, and product rights | Ranir Global Holdings, LLC
Assets acquired:
Definite-lived intangibles		$ 48.6
Liabilities assumed:
Finite lived assets, useful life		10 years
Customer relationships and distribution networks | Ranir Global Holdings, LLC
Assets acquired:
Definite-lived intangibles		$ 260.0
Liabilities assumed:
Finite lived assets, useful life		24 years
Trademarks, trade names, and brands | Ranir Global Holdings, LLC
Assets acquired:
Definite-lived intangibles		$ 41.0
Minimum | Trademarks, trade names, and brands | Ranir Global Holdings, LLC
Liabilities assumed:
Finite lived assets, useful life		20 years
Maximum | Trademarks, trade names, and brands | Ranir Global Holdings, LLC
Liabilities assumed:
Finite lived assets, useful life		25 years

[1] (1) We had accumulated impairments of $868.4 million as of December 31, 2019 and December 31, 2018.