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RESTRUCTURING AND OTHER RELATED COSTS - ROLLFORWARD (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2025 | Apr. 30, 2025 | Jan. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2025 | Jul. 31, 2024
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Income statement expense | $ 17 |  |  | $ 67 | $ 74 | $ 71
Restructuring expense since inception | 196 |  |  |  | 196 |
FY25 Restructuring Plan |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense since inception | 73 |  |  |  | 73 |
FY24 Restructuring Plan |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense since inception | 73 |  |  |  | 73 |
FY23 Restructuring Plan |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense since inception | 50 |  |  |  | 50 |
Employee Severance |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Beginning Balance | 52 | $ 5 | $ 13 |  | 13 |
Income statement expense | 17 | 56 | 1 |  |  |
Restructuring Reserve, Settled without Cash | 11 | 5 |  |  |  |
Payments for Restructuring | 35 | 5 | 9 |  |  |
Currency translation impact Gain (Loss) | 0 | 1 |  |  |  |
Restructuring Reserve, Ending Balance | 23 | 52 | 5 |  | 23 |
Employee Severance | FY25 Restructuring Plan |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Beginning Balance | 51 | 0 |  |  |  |
Income statement expense | 17 | 56 |  |  | 73 |
Restructuring Reserve, Settled without Cash | 11 | 5 |  |  |  |
Payments for Restructuring | 34 | 1 |  |  |  |
Currency translation impact Gain (Loss) | 0 | 1 |  |  |  |
Restructuring Reserve, Ending Balance | 23 | 51 | 0 |  | 23 |
Employee Severance | FY24 Restructuring Plan |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Beginning Balance | 1 | 4 | 11 |  | 11 |
Income statement expense |  |  | 1 |  | 1 |
Payments for Restructuring | 1 | 3 | 8 |  |  |
Restructuring Reserve, Ending Balance | $ 0 | $ 1 | $ 4 |  | 0 |
Employee Severance | FY23 Restructuring Plan |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Payments for Restructuring |  |  |  |  | $ 2 |

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