Acquisitions of Businesses (Details)	3 Months Ended		6 Months Ended			0 Months Ended	2 Months Ended		0 Months Ended	3 Months Ended			0 Months Ended		3 Months Ended		3 Months Ended	0 Months Ended		3 Months Ended	0 Months Ended	3 Months Ended				3 Months Ended	6 Months Ended	3 Months Ended					12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended						0 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Feb. 13, 2015 Arysta [Member] USD ($)	Mar. 31, 2015 Arysta [Member] USD ($)	Feb. 13, 2015 Arysta [Member] USD ($)	Nov. 03, 2014 CAS [Member] USD ($) agreement	Mar. 31, 2015 CAS [Member] USD ($) product_line	Nov. 03, 2014 CAS [Member] USD ($)	Mar. 31, 2015 Mac Dermid [Member] USD ($)	Oct. 01, 2014 Agriphar [Member] USD ($)	Oct. 01, 2014 Agriphar [Member] EUR (€)	Mar. 31, 2015 Agriphar [Member] USD ($)	Oct. 01, 2014 Agriphar [Member] USD ($)	Mar. 31, 2015 Agriphar Acquisition [Member] USD ($)	Nov. 03, 2014 Certis Europe BV [Member] CAS [Member] USD ($)	Feb. 13, 2015 Selling, General and Administrative Expenses [Member] Arysta [Member] USD ($)	Mar. 31, 2015 Selling, General and Administrative Expenses [Member] Arysta [Member] USD ($)	Nov. 03, 2014 Selling, General and Administrative Expenses [Member] CAS [Member] USD ($)	Mar. 31, 2015 Selling, General and Administrative Expenses [Member] CAS [Member] USD ($)	Mar. 31, 2015 Selling, General and Administrative Expenses [Member] Agriphar And CAS [Member] USD ($)	Mar. 31, 2015 Selling, General and Administrative Expenses [Member] Mac Dermid [Member] USD ($)	Dec. 31, 2014 Selling, General and Administrative Expenses [Member] Mac Dermid [Member] USD ($)	Mar. 31, 2015 Selling, General and Administrative Expenses [Member] Agriphar Acquisition [Member] USD ($)	Mar. 31, 2015 Selling, General and Administrative Expenses [Member] Agriphar Acquisition [Member] USD ($)	Mar. 31, 2015 Customer Relationships [Member]	Mar. 31, 2015 Developed Technology Rights [Member]	Mar. 31, 2015 Trade Names [Member]	Mar. 31, 2015 Noncompete Agreements [Member]	Mar. 31, 2015 Maximum [Member] Customer Relationships [Member]	Dec. 31, 2014 Maximum [Member] Customer Lists [Member] Arysta [Member]	Mar. 31, 2015 Maximum [Member] Developed Technology Rights [Member]	Dec. 31, 2014 Maximum [Member] Developed Technology Rights [Member] Arysta [Member]	Mar. 31, 2015 Maximum [Member] Trade Names [Member]	Mar. 31, 2015 Maximum [Member] Noncompete Agreements [Member]	Mar. 31, 2015 Minimum [Member] Customer Relationships [Member]	Mar. 31, 2015 Minimum [Member] Developed Technology Rights [Member]	Mar. 31, 2015 Minimum [Member] Trade Names [Member]	Mar. 31, 2015 Minimum [Member] Noncompete Agreements [Member]	Nov. 03, 2014 Cash [Member] CAS [Member] USD ($)
Business Acquisition [Line Items]
Total Consideration						$ 3,435,000,000			$ 1,035,100,000				$ 370,300,000	€ 300,000,000																												$ 983,000,000
Cash, net						2,789,100,000			983,100,000				350,200,000
Common stock restricted shares (in shares)						600,000,000								711,551
Option reversal value	(35,600,000)	100,000													(3,000,000)
Equity Instruments								645,900,000			52,000,000	97,500,000				16,600,000
First portion of restricted stock transfer																	33.33%
Second portion of restricted stock transfer																	33.33%
Third portion of restricted stock transfer																	33.33%
Acquisition transaction costs	31,300,000	0	22,900,000			29,300,000			38,800,000				4,700,000						6,400,000	22,900,000	38,800,000	4,900,000	28,300,000			500,000	4,700,000
Business combination, contributed revenues							177,500,000			103,400,000							73,600,000
Business combination, contributed earnings or loss of acquiree							4,300,000			28,400,000							18,200,000
Business acquisition, shares of common stock issued (in shares)									2,000,000
Number of supply agreements									6
Asset retirement obligations	17,400,000	4,900,000	17,400,000	18,500,000	4,800,000					13,200,000
Minimum supply agreement term									4 years
Major product lines										7
Long term contingent consideration												100,000,000												2,700,000	13,000,000
Percentage equity in acquisition																		15.00%
Value of the equity interest																		15,000,000
Goodwill acquired	2,150,000,000
Goodwill, expected to be tax deductible	$ 190,000,000		$ 190,000,000
Intangible asset useful life																																30 years	20 years	14 years	12 years	20 years	5 years	8 years	5 years	5 years	1 year
Intangible assets weighted average useful life	15 years																											20 years	12 years	20 years	5 years