Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended			12 Months Ended
	Oct. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015	Nov. 01, 2016
Property, Plant and Equipment [Line Items]
Goodwill, Impairment Loss				$ 0	$ 0
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative effect on retained earnings, net of tax						$ 4,100,000
Cumulative effect adjustment					17,700,000
Foreign Currency Translation [Abstract]
Net foreign exchange loss				1,400,000	1,600,000	3,500,000
Property, Plant and Equipment [Abstract]
Interest capitalized included in construction in progress				$ 5,200,000	$ 3,100,000
Treasury Stock [Abstract]
Number of shares in treasury (in shares)	3,600,000			3,600,000	3,300,000
Number of shares purchased	108,000	150,000		257,500	0
Minimum [Member] | Building [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, useful life, (years)				30 years
Minimum [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, useful life, (years)				3 years
Maximum [Member] | Building [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, useful life, (years)				40 years
Maximum [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, useful life, (years)				15 years
Retained Earnings [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative effect on retained earnings, net of tax						$ 4,100,000
Cumulative effect adjustment					$ 17,900,000
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Excess tax benefit, amount				$ 13,500,000
Accounting Standards Update 2016-09 [Member] | Retained Earnings [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative effect adjustment							$ 17,900,000
Rebate Accruals [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative effect on retained earnings, net of tax			$ 4,100,000
Cumulative effect on retained earnings, net of tax			$ 4,100,000