Consolidated Statements of Income - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Income Statement [Abstract]
Net sales	$ 2,139,000	$ 1,966,800	$ 1,797,100
Cost of sales	773,200	793,700	726,800
Gross profit	1,365,800	1,173,100	1,070,300
Selling, general and administrative expense	799,100	722,800	712,500
Research and development expense	69,200	65,400	69,600
Amortization of intangibles	68,400	60,800	51,500
Operating income	429,100	324,100	236,700
Interest expense	33,400	26,200	18,100
Other expense, net	1,700	2,300	3,100
Income before income taxes	394,000	295,600	215,500
Provision for income taxes	21,100	20,700	10,400
Net income	372,900	274,900	205,100
Less: net income attributable to noncontrolling interests	0	1,000	1,600
Net income attributable to Cooper stockholders	$ 372,900	$ 273,900	$ 203,500
Earnings per share attributable to Cooper stockholders - basic	$ 7.63	$ 5.65	$ 4.20
Earnings per share attributable to Cooper stockholders - diluted	$ 7.52	$ 5.59	$ 4.14
Number of shares used to compute earnings per share attributable to Cooper stockholders:
Basic	48.9	48.5	48.5
Diluted	49.6	49.0	49.2