CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Agriphar	Chemtura	Issuance of common shares at $19.00 per share in connection with Private Placement Offering on May 20, 2014	Issuance of common shares at $11.00 per share in connection with 401(k) Exchange Agreement	Issuance of common shares at $25.59 per share in connection with Private Placement Offering on October 8, 2014	Issuance of common shares at $25.59 per share on November 6, 2014	Issuance of common shares at $24.50 per share in connection with Public Offering on Nov. 17, 2014	Issuance of common stock at $26.50 per share in June 2015 Equity Offering	Non-Founder Director	Preferred Stock	Common Stock	Common Stock Agriphar	Common Stock Chemtura	Common Stock Issuance of common shares at $11.00 per share on January 5, 2014	Common Stock Issuance of common shares at $19.00 per share in connection with Private Placement Offering on May 20, 2014	Common Stock Issuance of common shares at $11.00 per share in connection with 401(k) Exchange Agreement	Common Stock Issuance of common shares at $25.59 per share in connection with Private Placement Offering on October 8, 2014	Common Stock Issuance of common shares at $25.59 per share on November 6, 2014	Common Stock Issuance of common shares at $24.50 per share in connection with Public Offering on Nov. 17, 2014	Common Stock Issuance of common stock at $26.50 per share in June 2015 Equity Offering	Common Stock Non-Founder Director	Common Stock Non-employee	Additional Paid-in Capital	Additional Paid-in Capital Agriphar	Additional Paid-in Capital Chemtura	Additional Paid-in Capital Issuance of common shares at $19.00 per share in connection with Private Placement Offering on May 20, 2014	Additional Paid-in Capital Issuance of common shares at $11.00 per share in connection with 401(k) Exchange Agreement	Additional Paid-in Capital Issuance of common shares at $25.59 per share in connection with Private Placement Offering on October 8, 2014	Additional Paid-in Capital Issuance of common shares at $25.59 per share on November 6, 2014	Additional Paid-in Capital Issuance of common shares at $24.50 per share in connection with Public Offering on Nov. 17, 2014	Additional Paid-in Capital Issuance of common stock at $26.50 per share in June 2015 Equity Offering	Additional Paid-in Capital Non-Founder Director	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total Stockholders' Equity	Total Stockholders' Equity Agriphar	Total Stockholders' Equity Chemtura	Total Stockholders' Equity Issuance of common shares at $19.00 per share in connection with Private Placement Offering on May 20, 2014	Total Stockholders' Equity Issuance of common shares at $11.00 per share in connection with 401(k) Exchange Agreement	Total Stockholders' Equity Issuance of common shares at $25.59 per share in connection with Private Placement Offering on October 8, 2014	Total Stockholders' Equity Issuance of common shares at $25.59 per share on November 6, 2014	Total Stockholders' Equity Issuance of common shares at $24.50 per share in connection with Public Offering on Nov. 17, 2014	Total Stockholders' Equity Issuance of common stock at $26.50 per share in June 2015 Equity Offering	Total Stockholders' Equity Non-Founder Director	Non-controlling Interests
Balance (in Shares) at Dec. 31, 2013											2,000,000	103,571,941
Balance at Dec. 31, 2013	$ 1,115.1										$ 0.0	$ 0.0												$ 1,212.0										$ (194.2)	$ 1.3	$ 1,019.1										$ 96.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(24.2)																																	(29.9)		(29.9)										5.7
Other comprehensive loss	(138.3)																																		(131.9)	(131.9)										(6.4)
Impact of Domestication												$ 1.0												(1.0)
Issuance of stock (in shares)												9,242			3,959	15,800,000	1,670,386	16,060,960	9,404,064	16,445,000
Issuance of common stock under ESPP (in shares)												11,139
Issuance of common stock under ESPP	$ 0.2																							0.2												0.2
Exercise of warrants for common shares at $11.50 per share (in shares)	16,244,694											16,244,694
Exercise of warrants for common shares at $11.50 per share	$ 186.9											$ 0.2												186.7												186.9
Issuance of stock				$ 300.2	$ 18.4	$ 411.0	$ 240.6	$ 402.9								$ 0.2		$ 0.2		$ 0.2							$ 300.0	$ 18.4	$ 410.8	$ 240.6	$ 402.7								$ 300.2	$ 18.4	$ 411.0	$ 240.6	$ 402.9
Issuance costs				$ (13.8)		$ (0.3)		$ (15.1)																			$ (13.8)		$ (0.3)		$ (15.1)								$ (13.8)		$ (0.3)		$ (15.1)
Declaration of stock dividend on Founders' preferred shares	0.0											$ 0.1												(0.1)
Issuance of common shares in connection with acquisition (in shares)													711,551	2,000,000
Issuance of common shares in connection with Acquisition		$ 16.6	$ 52.0																						$ 16.6	$ 52.0											$ 16.6	$ 52.0
Recovery of short swing profits, net	0.5																							0.5												0.5
Equity compensation expense	0.7																							0.7												0.7
Conversion of PDH common shares (in shares)												134,044
Conversion of PDH to common shares	0.0																							1.5												1.5										(1.5)
Distribution to non-controlling interests	(0.8)																																													(0.8)
Balance (in Shares) at Dec. 31, 2014											2,000,000	182,066,980
Balance at Dec. 31, 2014	2,552.6										$ 0.0	$ 1.9												2,812.4										(224.1)	(130.6)	2,459.6										93.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(304.4)																																	(308.6)		(308.6)										4.2
Other comprehensive loss	(795.5)																																		(755.5)	(755.5)										(40.0)
Issuance of common shares (in shares)																						75,000	2,500
Issuance of stock (in shares)																					18,226,414
Issuance of common stock under ESPP (in shares)												44,361
Issuance of common stock under ESPP	0.7																							0.7												0.7
Issuance of common stock to Founder Entities as stock dividend to Series A Preferred Stock declared on December 31, 2014 (in shares)												10,050,290
Issuance of common stock to former non-founder director for exercise of stock options										$ 0.9																							$ 0.9												$ 0.9
Issuance of stock									$ 482.9												$ 0.2											$ 482.7												$ 482.9
Issuance costs	(15.0)																							(15.0)												(15.0)
Issuance of common shares in connection with acquisition (in shares)												18,419,738
Issuance of common shares in connection with Acquisition	231.4											$ 0.2												231.2												231.4
Equity compensation expense	0.9																							0.9												0.9
Conversion of PDH common shares (in shares)												578,874
Conversion of PDH to common shares	0.0																							6.6												6.6										(6.6)
Assignment of value for non controlling interest in business acquisition	125.4																																													125.4
Acquisition of remaining interest in Arysta Colombia	(3.3)																																													(3.3)
Sale of 50.65% ownership in Arysta Toyo Green Co LTD, including maintenance sub	(1.7)																																													(1.7)
Distribution to non-controlling interests	(1.6)																																													(1.6)
Balance (in Shares) at Dec. 31, 2015											2,000,000	229,464,157
Balance at Dec. 31, 2015	2,273.3										$ 0.0	$ 2.3												3,520.4										(532.7)	(886.1)	2,103.9										169.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(76.7)																																	(73.7)		(73.7)										(3.0)
Other comprehensive loss	$ 213.6																																		211.6	211.6										2.0
Issuance of common shares (in shares)	0											7,642
Issuance of stock (in shares)												48,787,878
Issuance of common stock under ESPP (in shares)												136,060
Issuance of common stock under ESPP	$ 0.9																							0.9												0.9
Issuance of common stock to former non-founder director for exercise of stock options	0.0																																			0.0
Issuance of stock	402.5											$ 0.5												402.0												402.5
Issuance costs	(11.9)																							(11.9)												(11.9)
Equity compensation expense	7.4																							7.4												7.4
Conversion of PDH common shares (in shares)												325,431
Conversion of PDH to common shares	0.0																							3.8												3.8										(3.8)
Series B Convertible Preferred Stock settlement	87.8																							54.9										32.9		87.8
Series B Convertible Preferred Stock settlement (in shares)												5,500,000
Changes in non-controlling interests	(7.1)																							3.8												3.8										(10.9)
Balance (in Shares) at Dec. 31, 2016											2,000,000	284,221,168
Balance at Dec. 31, 2016	$ 2,889.8										$ 0.0	$ 2.8												$ 3,981.3										$ (573.5)	$ (674.5)	$ 2,736.1										$ 153.7