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REVENUE - Contract Balances (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 01, 2018 | Oct. 31, 2020 | Oct. 31, 2019
Contract with Customer, Asset, after Allowance for Credit Loss |  | $ 153 | $ 110
Contract Liability ending balance | $ 367 | 386 | 367
Increase (Decrease) in Contract with Customer, Liability |  | 347 | 303
Contract with Customer, Liability, Revenue Recognized |  | (300) | (287)
Contract with Customer, Refund Liability |  | 9 | 5
Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination |  |  | 9
Translation Adjustment Functional to Reporting Currency, Net of Tax, Period Increase (Decrease) |  | 4 | 0
Contract Liability ending balance |  | 446 | $ 386
Revenue, Remaining Performance Obligation, Amount |  | $ 217 |
Difference between Revenue Guidance in Effect before and after Topic 606 |  |  |
Deferred Revenue, Period Increase (Decrease) | $ (11) |  |

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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130533-203044 + Details
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