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Retirement and Post-Retirement Benefit Plans - Narrative (Details)
plan_participant in Thousands, $ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2016
USD ($)
plan_participant
Jul. 31, 2015
USD ($)
Jul. 31, 2016
USD ($)
Jul. 31, 2015
USD ($)
Retirement and post-retirement benefit plans        
Number of plan participants electing to receive lump sum payments | plan_participant 17      
Lump sum credit recognized $ 0 $ 64 $ 0 $ 64
Defined Benefit Plan Settlement Credits [Member]        
Retirement and post-retirement benefit plans        
Lump sum credit recognized   72    
Non-U.S.Pension Plans        
Retirement and post-retirement benefit plans        
Contributions to benefit plans     15  
Expected contribution to defined benefit plans during remainder of fiscal year 3   3  
Lump sum credit recognized 0 0 (1) (2)
Additional net periodic benefit cost 11 56 33 169
U.S. Non-Qualified Plan Participants        
Retirement and post-retirement benefit plans        
Contributions to benefit plans     24  
Expected contribution to defined benefit plans during remainder of fiscal year 9   9  
Additional net periodic benefit cost   8    
Post- Retirement Benefit Plans        
Retirement and post-retirement benefit plans        
Contributions to benefit plans     24  
Expected contribution to defined benefit plans during remainder of fiscal year 11   11  
Lump sum credit recognized 0 0 0 0
Additional net periodic benefit cost $ (10) $ (8) $ (21) $ (26)