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HPE Next - Transformation Costs (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Restructuring Cost and Reserve [Line Items]    
Total $ 89 $ 78
HPE Next    
Restructuring Cost and Reserve [Line Items]    
Program management 11 11
IT costs 28 27
Restructuring charges 84 33
Gain on real estate sales (34) 0
Other 0 12
Total $ 89 $ 83