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NORTHERN CALIFORNIA WILDFIRES IMPACT (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Unusual or Infrequent Item, or Both [Line Items]    
Northern California wildfire-related costs $ 32 $ 0
Insurance proceeds received for damage to property, plant and equipment 32 $ 0
Northern California Wildfires [Member]    
Unusual or Infrequent Item, or Both [Line Items]    
Unusual or Infrequent Item, or Both, Insurance Proceeds 37  
Insurance proceeds received for damage to property, plant and equipment $ 32