Consolidating Balance Sheet (Parenthetical) (Detail) (USD $)	3 Months Ended			9 Months Ended			12 Months Ended
	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Condensed Balance Sheet Statements Captions [Line Items]
Debt instrument interest rate	6.75%			6.75%
Preferred stock, shares issued	0			0			0
Preferred stock, par value	$ 0.01			$ 0.01			$ 0.01
Preferred stock, shares authorized	100,000,000			100,000,000			100,000,000
Common stock, par value	$ 0.01			$ 0.01			$ 0.01
Common stock, shares authorized	500,000,000			500,000,000			500,000,000
6.75% Unsecured Notes Due 2019
Condensed Balance Sheet Statements Captions [Line Items]
Debt instrument interest rate	6.75%		6.75%	6.75%		6.75%	6.75%
Debt instrument maturity date	Mar. 01, 2019		Mar. 01, 2019	Mar. 01, 2019		Mar. 01, 2019	Mar. 01, 2019
Eliminations
Condensed Balance Sheet Statements Captions [Line Items]
Preferred stock, shares issued	0			0			0
Kraton
Condensed Balance Sheet Statements Captions [Line Items]
Preferred stock, shares issued	0			0			0
Kraton Polymers L L C
Condensed Balance Sheet Statements Captions [Line Items]
Preferred stock, shares issued	0	[1]		0	[1]		0	[1]
Guarantor Subsidiaries
Condensed Balance Sheet Statements Captions [Line Items]
Preferred stock, shares issued	0			0			0
Non-Guarantor Subsidiaries
Condensed Balance Sheet Statements Captions [Line Items]
Preferred stock, shares issued	0			0			0

[1] Kraton Polymers LLC and Kraton Polymers Capital Corporation, a financing subsidiary, collectively, the Issuers, are co-issuers of the 6.75% senior notes due March 1, 2019. Kraton Polymers Capital Corporation has minimal assets and income. We do not believe that separate financial information concerning the Issuers would provide additional information that would be material to investors in making an investment decision.