QUARTERLY DATA (Schedule Of Quarterly Data) (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 30, 2012		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 479.9		$ 463.9		$ 513.8		$ 477.4		$ 470.7		$ 455.4		$ 404.0		$ 378.1		$ 1,935.0		$ 1,708.1		$ 1,415.9
Gross profit	175.3	[1]	150.6	[1]	187.3	[1]	138.6	[1]	118.3	[1]	138.6	[1]	134.5	[1]	113.8	[1]	651.9	[1]	505.2	[1]
Net earnings attributable to Cytec Industries Inc.	$ 59.4		$ 43.8		$ 34.6		$ 35.6		$ 26.8		$ 58.4		$ 40.6		$ 49.0		$ 173.5		$ 174.9		$ 185.9
Earnings per common share attributable to Cytec Industries Inc.:
Basic earnings per common share (in dollars per share)	$ 1.66	[2]	$ 1.21	[2]	$ 0.85	[2]	$ 0.79	[2]	$ 0.59	[2]	$ 1.26	[2]	$ 0.88	[2]	$ 1.06	[2]	$ 4.40	[2]	$ 3.80	[2]	$ 3.84
Diluted earnings per common share (in dollars per share)	$ 1.62	[2]	$ 1.19	[2]	$ 0.83	[2]	$ 0.78	[2]	$ 0.58	[2]	$ 1.24	[2]	$ 0.86	[2]	$ 1.06	[2]	$ 4.31	[2]	$ 3.74	[2]	$ 3.79

[1] Gross profit is derived by subtracting manufacturing cost of sales from net sales.

[2] The sum of the quarters may not equal the full year basic and diluted net earnings per share since each period is calculated separately.