Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Treasury Stock Par Net Value [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interests [Member]
Beginning Balance (in shares) at Oct. 31, 2015		48,300,000	3,300,000
Beginning Balance at Oct. 31, 2015	$ 2,669,800	$ 4,800	$ (360,100)	$ 300	$ 1,434,700	$ (191,600)	$ 1,775,300	$ 6,400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Cooper stockholders	273,900						273,900
Other comprehensive income (loss), net of tax	(298,000)					(298,000)
Issuance of common stock for stock plans (in shares)		500,000	0
Issuance of common stock for stock plans	7,200	$ 100		0	7,100
Tax benefit from exercise of stock options	20,900				20,900
Dividends on common stock	(2,900)						(2,900)
Share-based compensation expense	29,900				29,900
Purchase of shares from noncontrolling interests	(2,200)				1,400			(3,600)
Distributions to noncontrolling interests	(700)							(700)
Noncontrolling interests	(2,000)							(2,000)
Ending Balance (in shares) at Oct. 31, 2016		48,800,000	3,300,000
Ending Balance at Oct. 31, 2016	2,695,900	$ 4,900	$ (360,100)	300	1,494,000	(489,600)	2,046,300	100
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Cooper stockholders	372,900						372,900
Other comprehensive income (loss), net of tax	114,300					114,300
Issuance of common stock for stock plans (in shares)		300,000	0
Issuance of common stock for stock plans	(5,300)	$ 0		0	(5,300)
Dividends on common stock	(2,900)						(2,900)
Share-based compensation expense	$ 38,200				38,200
Treasury stock repurchase (in shares)	257,500	300,000	300,000
Treasury stock repurchase	$ (55,000)	$ 0	$ (55,000)	0
Ending Balance (in shares) at Oct. 31, 2017		48,800,000	3,600,000
Ending Balance at Oct. 31, 2017	3,175,800	$ 4,900	$ (415,100)	300	1,526,700	(375,300)	2,434,200	100
Increase (Decrease) in Stockholders' Equity [Roll Forward]
ASU adoption	17,700				(200)		17,900
Net income attributable to Cooper stockholders	139,900						139,900
Other comprehensive income (loss), net of tax	(50,600)
Other comprehensive loss, net of tax	(50,600)					(50,600)
Issuance of common stock for stock plans (in shares)		400,000	0
Issuance of common stock for stock plans	1,800	$ 100		0	1,700
Dividends on common stock	(2,900)						(2,900)
Share-based compensation expense	$ 43,700				43,700
Treasury stock repurchase (in shares)	0
Noncontrolling interests	$ 100							100
Ending Balance (in shares) at Oct. 31, 2018		49,200,000	3,600,000
Ending Balance at Oct. 31, 2018	3,307,800	$ 5,000	$ (415,100)	$ 300	1,572,100	(430,700)	2,576,000	$ 200
Increase (Decrease) in Stockholders' Equity [Roll Forward]
ASU adoption	$ 0				$ 0	$ (4,800)	$ 4,800