Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Millions			6 Months Ended
		Apr. 21, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill			$ 795.0		$ 776.1
Total cash paid, less cash acquired			$ 0.0	$ 1,205.1
Cheminova
Business Acquisition [Line Items]
Trade receivables		$ 488.1
Inventories	[1]	362.4
Other current assets		53.6
Property, plant & equipment		186.4
Goodwill	[2]	468.8
Other assets		84.5
Total fair value of assets acquired		2,302.1
Short-term debt		140.5
Other current liabilities		432.3
Environmental reserves		47.2
Long-term debt	[3]	273.1
Deferred tax liabilities		165.1
Other liabilities		38.8
Total fair value of liabilities assumed		1,097.0
Total cash paid, less cash acquired		$ 1,205.1
Weighted average useful life of acquired intangibles		20 years
Cheminova | Fair Value Adjustment to Inventory [Member]
Business Acquisition [Line Items]
Inventories		$ 57.8		$ 19.3
Cheminova | Customer relationships
Business Acquisition [Line Items]
Intangible Assets	[4]	294.1
Cheminova | Brands
Business Acquisition [Line Items]
Intangible Assets	[4]	362.8
Cheminova | In-process research & development
Business Acquisition [Line Items]
Intangible Assets	[4]	$ 1.4

[1] Fair value of finished goods inventory acquired included a step-up in the value of approximately $57.8 million, of which $19.3 million was expensed in the three and six months ended June 30, 2015 all of which was expensed in the full year 2015 and included in "Cost of sales and services" on the condensed consolidated income statement.

[2] Goodwill largely consists of expected cost synergies and economies of scale resulting from the business combination. None of the acquired goodwill will be deductible for income tax purposes

[3] Long-term debt assumed primarily consisted of mortgage debt and borrowings under existing Cheminova credit facilities that were settled by FMC’s term loan in the second quarter of 2015.

[4] The weighted average useful life of the acquired finite-lived intangibles, which primarily represents the customer relationships, is approximately 20 years.