Summary of Significant Accounting Policies - Property, Plant and Equipment (Details)	12 Months Ended
	Oct. 31, 2020
Buildings & building equipment
Useful lives of property, plant and equipment
Property, plant and equipment, useful life	30 years
Machinery & equipment | Minimum
Useful lives of property, plant and equipment
Property, plant and equipment, useful life	3 years
Machinery & equipment | Maximum
Useful lives of property, plant and equipment
Property, plant and equipment, useful life	10 years
Office equipment | Minimum
Useful lives of property, plant and equipment
Property, plant and equipment, useful life	3 years
Office equipment | Maximum
Useful lives of property, plant and equipment
Property, plant and equipment, useful life	10 years
Leasehold improvements | Minimum
Useful lives of property, plant and equipment
Property, plant and equipment, useful life	7 years
Leasehold improvements | Maximum
Useful lives of property, plant and equipment
Property, plant and equipment, useful life	20 years