Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 75,467	$ 54,921	$ 150,401	$ 109,544
Other comprehensive income (loss):
Foreign currency translation adjustment	(14,783)	8,521	(13,410)	(3,313)
Change in value of derivative instruments, net of tax provision of $156 and $387 for the three and six months ended April 30, 2013, respectively, and $233 and $182 for the corresponding period of fiscal 2012, respectively	244	365	607	284
Change in minimum pension liability, net of tax	7	7	14	15
Unrealized gain on marketable securities, net of tax provision of $13 and $25 for the three and six months ended April 30, 2013, respectively, and $10 and $29 for the corresponding period of fiscal 2012, respectively	25	19	47	56
Other comprehensive (loss) income	(14,507)	8,912	(12,742)	(2,958)
Comprehensive income	60,960	63,833	137,659	106,586
Comprehensive loss attributable to noncontrolling interests	294	0	626	0
Comprehensive income attributable to Cooper stockholders	$ 61,254	$ 63,833	$ 138,285	$ 106,586