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SEGMENT INFORMATION Reconciliation of Reportable Results (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]    
Total reportable operating segments' income from operations $ 203 $ 121
Share-based compensation expense (39) (27)
Amortization of acquisition-related balances (59) (54)
Acquisition and integration costs (2) (2)
Northern California wildfire-related costs 32 0
Other (3) 0
Income from operations 203 121
Interest income 6 4
Interest expense (19) (20)
Other income (expense), net 12 15
Income before taxes 202 120
Operating Segments [Member]    
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]    
Total reportable operating segments' income from operations 274 204
Income from operations $ 274 $ 204