Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalent maturity period, months	3 months
Debt securities and other investments, minimum short term maturity, period	3 months
Debt securities and other investments, maximum maturity, period	3 years
Debt securities, available-for-sale, allowance for credit loss	$ 0
Depreciation expenses	119,100,000	$ 119,100,000	$ 100,400,000
Repair and maintenance costs	62,600,000	62,100,000	52,500,000
Goodwill impairment loss	0	0
Long-lived assets impairment loss	0	0	0
Restructuring charges	$ 33,405,000	36,059,000	47,186,000
Software product warranty period (in days)	90 days
Cumulative effect of new accounting principle in period of adoption	$ 5,298,943,000	4,912,367,000	4,088,876,000	$ 3,485,015,000
Accounting Standards Update 2016-13 | Cumulative effect, period of adoption, adjustment
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of new accounting principle in period of adoption	$ 3,200,000
Maximum
Summary Of Significant Accounting Policies [Line Items]
Hardware product warranty period (in months)	6 months
2021 Restructuring
Summary Of Significant Accounting Policies [Line Items]
Restructuring charges	$ 33,400,000
Payments for restructuring charges	19,200,000
Restructuring reserve	14,200,000
2021 Restructuring | Minimum
Summary Of Significant Accounting Policies [Line Items]
Restructuring charges, expected cost	42,000,000
2021 Restructuring | Maximum
Summary Of Significant Accounting Policies [Line Items]
Restructuring charges, expected cost	$ 53,000,000
2019 Restructuring
Summary Of Significant Accounting Policies [Line Items]
Restructuring charges		36,100,000	$ 47,200,000
Payments for restructuring charges		57,400,000
Restructuring reserve		0
2019 Restructuring | Accounts Payable and Accrued Liabilities
Summary Of Significant Accounting Policies [Line Items]
Restructuring reserve		$ 1,300,000
Intangible Assets | Minimum
Summary Of Significant Accounting Policies [Line Items]
Intangible assets amortization period	1 year
Intangible Assets | Maximum
Summary Of Significant Accounting Policies [Line Items]
Intangible assets amortization period	10 years