Restructuring, Impairment and Disposal Charges (Details) - USD ($) $ in Millions		12 Months Ended
		Oct. 31, 2021		Nov. 01, 2020		Nov. 03, 2019		Nov. 05, 2018
Restructuring Cost and Reserve [Line Items]
Restructured Lease Liability		$ 52
Impairment and disposal charges		16		$ 19		$ 67
Restructuring Reserve
Beginning balance		34		108		22
Liabilities assumed from CA								$ 67
Restructuring expense		113		233	[1]	746
Utilization		(143)		(271)		(727)
Restructuring Reserve, Accrual Adjustment	[2]			(36)
Ending balance		4		34		108
Write-down of restructured lease-related right-of-use assets and other lease-related charges		36		30		134
CA Technologies, Inc.
Restructuring Reserve
Restructuring expense				28
Symantec
Restructuring Reserve
Restructuring expense				174
2021 Restructuring
Restructuring Reserve
Restructuring expense		149
Employee Termination Costs
Restructuring Reserve
Beginning balance		34		69		16
Liabilities assumed from CA								29
Restructuring expense		100		186	[1]	586
Utilization		(130)		(221)		(562)
Restructuring Reserve, Accrual Adjustment				0
Ending balance		4	[3]	34		69
Other Exit Costs
Restructuring Reserve
Beginning balance		0		39		6
Liabilities assumed from CA								$ 38
Restructuring expense		13		47	[1],[4]	160	[4]
Utilization		(13)		(50)	[4]	(165)
Restructuring Reserve, Accrual Adjustment	[2]			(36)
Ending balance		$ 0		0		$ 39
Discontinued Operations, Held-for-Sale
Restructuring Reserve
Restructuring And Other Related Costs				$ 19

[1] Included $19 million of restructuring expense related to discontinued operations recognized during fiscal year 2020, which was included in loss from discontinued operations.

[2] Upon adoption of Topic 842, certain restructuring lease liabilities were required to be recognized as a reduction to the corresponding ROU assets

[3] The majority of the employee termination costs balance is expected to be paid within the next six months.

[4] Included $30 million and $134 million of restructuring expense related to the write-down of certain lease-related ROU assets and other lease-related charges during fiscal years 2020 and 2019, respectively.