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REVENUE - Contract Assets and Liability (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Oct. 31, 2020
Contract Asset |  |  |
Contract Assets (Unbilled Accounts Receivable) | $ 154 |  | $ 153
Contract Liability |  |  |
Contract liability ending balance as of October 31, 2019 | 446 |  |
Net revenue deferred in the period | 197 |  |
Revenue recognized that was included in the contract liability balance at the beginning of the period | (186) | $ 142 |
Change in deferrals from customer cash advances, net of revenue recognized | 20 |  |
Currency Translation and Other Adjustment | 8 |  |
Contract liability ending balance as of April 30, 2020 | $ 485 |  |

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