Accounting Policies - Estimated Useful Lives of Property, Plant and equipment (Detail)	12 Months Ended
	Oct. 31, 2020
Minimum [Member] | Buildings, Related Improvements & Land Improvements [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	P5Y
Minimum [Member] | Machinery & Equipment [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	P3Y
Minimum [Member] | Computer Hardware & Software [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	P3Y
Minimum [Member] | Office Furniture Equipment & Other [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	P3Y
Maximum [Member] | Buildings, Related Improvements & Land Improvements [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	P39Y
Maximum [Member] | Machinery & Equipment [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	P15Y
Maximum [Member] | Computer Hardware & Software [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	P10Y
Maximum [Member] | Office Furniture Equipment & Other [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	P15Y