Consolidated Condensed Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Common Shares	Treasury Stock	Treasury Stock Par Net Value	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling Interests
Beginning balance (in shares) at Oct. 31, 2018		49,200,000	3,600,000
Beginning balance at Oct. 31, 2018	$ 3,307.8	$ 5.0	$ (415.1)	$ 0.3	$ 1,572.1	$ (430.7)	$ 2,576.0	$ 0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	103.2						103.2
Other comprehensive income (loss), net of tax	32.7					32.7
Issuance of common stock for stock plans, net (in shares)		100,000
Issuance of common stock for stock plans, net	(9.0)				(9.0)
Treasury stock repurchase	(6.1)		$ (6.1)
Dividends on common stock ($0.03 per share)	(1.5)						(1.5)
Share-based compensation expense	11.7				11.7
Ending balance (in shares) at Jan. 31, 2019		49,300,000	3,600,000
Ending balance at Jan. 31, 2019	3,425.5	$ 5.0	$ (421.2)	0.3	1,574.8	(398.0)	2,664.4	0.2
Beginning balance (in shares) at Oct. 31, 2018		49,200,000	3,600,000
Beginning balance at Oct. 31, 2018	3,307.8	$ 5.0	$ (415.1)	0.3	1,572.1	(430.7)	2,576.0	0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	225.5
Ending balance (in shares) at Apr. 30, 2019		49,500,000	3,600,000
Ending balance at Apr. 30, 2019	3,542.2	$ 5.0	$ (421.2)	0.3	1,587.7	(416.6)	2,786.8	0.2
Beginning balance (in shares) at Oct. 31, 2018		49,200,000	3,600,000
Beginning balance at Oct. 31, 2018	$ 3,307.8	$ 5.0	$ (415.1)	0.3	1,572.1	(430.7)	2,576.0	0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock repurchase (in shares)	537,000.0
Treasury stock repurchase	$ (156.1)
Ending balance (in shares) at Oct. 31, 2019		49,100,000	4,100,000
Ending balance at Oct. 31, 2019	3,628.6	$ 4.9	$ (571.2)	0.4	1,615.0	(447.1)	3,026.4	0.2
Beginning balance (in shares) at Jan. 31, 2019		49,300,000	3,600,000
Beginning balance at Jan. 31, 2019	3,425.5	$ 5.0	$ (421.2)	0.3	1,574.8	(398.0)	2,664.4	0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	122.4						122.4
Other comprehensive income (loss), net of tax	(18.6)					(18.6)
Issuance of common stock for stock plans, net (in shares)		200,000
Issuance of common stock for stock plans, net	4.5				4.5
Share-based compensation expense	8.4				8.4
Ending balance (in shares) at Apr. 30, 2019		49,500,000	3,600,000
Ending balance at Apr. 30, 2019	3,542.2	$ 5.0	$ (421.2)	0.3	1,587.7	(416.6)	2,786.8	0.2
Beginning balance (in shares) at Oct. 31, 2019		49,100,000	4,100,000
Beginning balance at Oct. 31, 2019	3,628.6	$ 4.9	$ (571.2)	0.4	1,615.0	(447.1)	3,026.4	0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	90.5						90.5
Other comprehensive income (loss), net of tax	16.7					16.7
Issuance of common stock for stock plans, net (in shares)		100,000
Issuance of common stock for stock plans, net	(13.1)				(13.2)
Dividends on common stock ($0.03 per share)	(1.5)						(1.5)
Share-based compensation expense	9.7				9.7
Ending balance (in shares) at Jan. 31, 2020		49,200,000	4,100,000
Ending balance at Jan. 31, 2020	3,730.9	$ 4.9	$ (571.2)	0.4	1,611.6	(430.4)	3,115.4	0.2
Beginning balance (in shares) at Oct. 31, 2019		49,100,000	4,100,000
Beginning balance at Oct. 31, 2019	3,628.6	$ 4.9	$ (571.2)	0.4	1,615.0	(447.1)	3,026.4	0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 102.0
Treasury stock repurchase (in shares)	0
Ending balance (in shares) at Apr. 30, 2020		49,100,000	4,300,000
Ending balance at Apr. 30, 2020	$ 3,627.5	$ 4.9	$ (618.6)	0.4	1,626.5	(512.8)	3,126.9	0.2
Beginning balance (in shares) at Jan. 31, 2020		49,200,000	4,100,000
Beginning balance at Jan. 31, 2020	3,730.9	$ 4.9	$ (571.2)	0.4	1,611.6	(430.4)	3,115.4	0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11.5						11.5
Other comprehensive income (loss), net of tax	(82.4)					(82.4)
Issuance of common stock for stock plans, net (in shares)		100,000
Issuance of common stock for stock plans, net	$ 5.0				5.0
Treasury stock repurchase (in shares)	160,800		200,000
Treasury stock repurchase	$ (47.8)		$ (47.8)
Issuance of common stock for employee stock purchase plan	1.0		$ 0.4		0.6
Share-based compensation expense	9.3				9.3
Ending balance (in shares) at Apr. 30, 2020		49,100,000	4,300,000
Ending balance at Apr. 30, 2020	$ 3,627.5	$ 4.9	$ (618.6)	$ 0.4	$ 1,626.5	$ (512.8)	$ 3,126.9	$ 0.2