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Goodwill and Intangible Assets (Tables)
3 Months Ended
Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill [Table Text Block]
Goodwill
Semiconductor SolutionsInfrastructure SoftwareTotal
(In millions)
Balance as of November 1, 2020$25,959 $17,488 $43,447 
Acquisition— 10 10 
Balance as of January 31, 2021$25,959 $17,498 $43,457 
Schedule of Intangible Assets by Major Class [Table Text Block]
Gross Carrying
Amount
Accumulated
Amortization
Net Book
Value
(In millions)
As of January 31, 2021:   
Purchased technology$24,126 $(14,797)$9,329 
Customer contracts and related relationships8,392 (3,525)4,867 
Order backlog2,579 (1,965)614 
Trade names797 (341)456 
Other252 (124)128 
Intangible assets subject to amortization36,146 (20,752)15,394 
In-process research and development25 — 25 
Total$36,171 $(20,752)$15,419 
As of November 1, 2020:   
Purchased technology$24,119 $(13,925)$10,194 
Customer contracts and related relationships8,389 (3,179)5,210 
Order backlog2,579 (1,836)743 
Trade names797 (322)475 
Other252 (117)135 
Intangible assets subject to amortization36,136 (19,379)16,757 
In-process research and development25 — 25 
Total$36,161 $(19,379)$16,782 
Finite-lived Intangible Assets Remaining Amortization Expense
Based on the amount of intangible assets subject to amortization at January 31, 2021, the expected amortization expense for each of the next five years and thereafter was as follows:
Fiscal Year:Expected Amortization Expense
(In millions)
2021 (remainder)$4,047 
20224,367 
20233,237 
20242,367 
2025656 
Thereafter720 
Total$15,394 
Finite-lived Intangible Assets Remaining Weighted Average Amortization Period
The weighted-average remaining amortization periods by intangible asset category were as follows:
Amortizable intangible assets:January 31,
2021
(In years)
Purchased technology5
Customer contracts and related relationships4
Order backlog2
Trade names9
Other9