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Restructuring Charges (Details) $ in Millions | 12 Months Ended
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Nov. 04, 2018 USD ($) employees | Oct. 29, 2017 USD ($) | Oct. 30, 2016 USD ($)
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance |  | $ 45 |  | $ 151 | $ 26
Restructuring charges (a) | [1] | 228 |  | 129 | 482
Utilization |  | (251) |  | (235) | (372)
Ending balance |  | $ 22 | [2] | 45 | 151
Employee Termination Costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected completion date |  | Feb. 03, 2019 |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance |  | $ 28 |  | 116 | 13
Restructuring charges (a) | [1] | 153 |  | 86 | 445
Utilization |  | (165) |  | (174) | (344)
Ending balance |  | $ 16 | [2] | 28 | 116
Other Restructuring [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected completion date |  | Nov. 03, 2019 |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance |  | $ 17 |  | 35 | 13
Restructuring charges (a) | [1] | 75 |  | 43 | 37
Utilization |  | (86) |  | (61) | (28)
Ending balance |  | 6 | [2] | 17 | 35
Brocade Communications Systems, Inc. [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring Charges |  | $ 176 |  |  |
Restructuring and Related Cost, Number of Positions Eliminated (employees) | employees |  | 1,200 |  |  |
Broadcom Transaction [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Asset Impairment Charges |  |  |  |  | 417
Impairment of Long-Lived Assets Held-for-use |  | $ 13 |  | 56 | 173
Broadcom Transaction [Member] | Employee Termination Costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring Charges |  | 50 |  | 124 | 447
Discontinued Operations, Held-for-sale [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring charges (a) |  | $ 2 |  | $ 5 | 35
Subsystem Assets [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Disposal Group, Not Discontinued Operation, (Loss) Gain on Write-down |  |  |  |  | 16
Broadcom Transaction [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructure reserve assumed in business combination |  |  |  |  | 15
Broadcom Transaction [Member] | Employee Termination Costs |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructure reserve assumed in business combination |  |  |  |  | 2
Broadcom Transaction [Member] | Other Restructuring [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructure reserve assumed in business combination |  |  |  |  | $ 13
[1] | Included $2 million, $5 million and $35 million of restructuring charges related to discontinued operations recognized during fiscal years 2018, 2017 and 2016, respectively, which was included in loss from discontinued operations in our consolidated statements of operations.
[2] | The majority of the employee termination costs balance is expected to be paid during the first quarter of fiscal year 2019. The leases and other exit costs balance is expected to be paid by the end of fiscal year 2019.

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