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SEGMENT INFORMATION - Reconciliation of Reportable Results (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Reconciliation of Operating Profit from Segments to Consolidated    
Total reportable segment's income from operations $ 396 $ 311
Transformational initiatives (11) (13)
Amortization of intangible assets related to business combinations (44) (48)
Acquisition and integration costs (9) (13)
Other (4) (22)
Interest income 0 3
Interest expense (19) (20)
Other income (expense), net 3 21
Income before taxes, as reported $ 312 $ 219