EARNINGS PER SHARE (EPS) (Computation Of Basic And Diluted Earnings Per Common Share) (Detail) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share Basic And Diluted [Line Items]
Earnings from continuing operations	$ 55.9	$ 8.7
Earnings from discontinued operations, net of tax	0	26.9
Net earnings attributable to Cytec Industries Inc.	$ 55.9	$ 35.6
Weighted average shares outstanding	35,946	45,018
Diluted average shares outstanding	36,648	45,853
Basic EPS from continuing operations	$ 1.55	$ 0.19
Basic EPS from discontinued operations	$ 0.00	$ 0.60
Basic earnings per common share attributable to Cytec Industries Inc.	$ 1.55	$ 0.79
Diluted EPS from continuing operations	$ 1.52	$ 0.19
Diluted EPS from discontinued operations	$ 0.00	$ 0.59
Diluted earnings per common share attributable to Cytec Industries Inc.	$ 1.52	$ 0.78
Options And Stock-Settled SARS
Earnings Per Share Basic And Diluted [Line Items]
Non-vested shares and units	587	721
Non-Vested Shares And Units
Earnings Per Share Basic And Diluted [Line Items]
Non-vested shares and units	115	114