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Retirement and Post-Retirement Benefit Plans (Details 5) (USD $)
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Government debt securities
      
Retirement and post-retirement benefit plans      
Reclassified from level 1 to level 2   $ 1,600,000,000  
U.S. Defined Benefit Plans
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 10,866,000,000 11,536,000,000 10,662,000,000
U.S. Defined Benefit Plans | U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,711,000,000 1,150,000,000  
U.S. Defined Benefit Plans | Non-U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,274,000,000 866,000,000  
U.S. Defined Benefit Plans | Corporate debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 3,028,000,000 3,443,000,000  
U.S. Defined Benefit Plans | Government debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,849,000,000 3,037,000,000  
U.S. Defined Benefit Plans | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,250,000,000 1,303,000,000  
U.S. Defined Benefit Plans | Hybrids, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 2,000,000 2,000,000  
U.S. Defined Benefit Plans | Hedge Funds, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 113,000,000 65,000,000  
U.S. Defined Benefit Plans | Common Collective Trusts and 103-12 Investment Entities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,233,000,000 1,546,000,000  
U.S. Defined Benefit Plans | Registered Investment Companies
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 390,000,000 461,000,000  
U.S. Defined Benefit Plans | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 73,000,000 42,000,000  
U.S. Defined Benefit Plans | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets (57,000,000) (379,000,000)  
U.S. Defined Benefit Plans | Level 1
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 3,020,000,000 1,827,000,000  
U.S. Defined Benefit Plans | Level 1 | U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,711,000,000 1,150,000,000  
U.S. Defined Benefit Plans | Level 1 | Non-U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,274,000,000 866,000,000  
U.S. Defined Benefit Plans | Level 1 | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets   3,000,000  
U.S. Defined Benefit Plans | Level 1 | Registered Investment Companies
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 61,000,000 119,000,000  
U.S. Defined Benefit Plans | Level 1 | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 11,000,000 (66,000,000)  
U.S. Defined Benefit Plans | Level 1 | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets (37,000,000) (245,000,000)  
U.S. Defined Benefit Plans | Level 2
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 6,481,000,000 8,341,000,000  
U.S. Defined Benefit Plans | Level 2 | Corporate debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 3,028,000,000 3,442,000,000  
U.S. Defined Benefit Plans | Level 2 | Government debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,849,000,000 3,037,000,000  
U.S. Defined Benefit Plans | Level 2 | Common Collective Trusts and 103-12 Investment Entities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,233,000,000 1,546,000,000  
U.S. Defined Benefit Plans | Level 2 | Registered Investment Companies
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 329,000,000 342,000,000  
U.S. Defined Benefit Plans | Level 2 | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 62,000,000 108,000,000  
U.S. Defined Benefit Plans | Level 2 | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets (20,000,000) (134,000,000)  
U.S. Defined Benefit Plans | Level 3
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,365,000,000 1,368,000,000 1,360,000,000
U.S. Defined Benefit Plans | Level 3 | Corporate debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets   1,000,000  
U.S. Defined Benefit Plans | Level 3 | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,250,000,000 1,300,000,000 1,356,000,000
U.S. Defined Benefit Plans | Level 3 | Hybrids, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 2,000,000 2,000,000 4,000,000
U.S. Defined Benefit Plans | Level 3 | Hedge Funds, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 113,000,000 65,000,000  
Non-U.S. Defined Benefit Plans
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 16,083,000,000 14,021,000,000 13,180,000,000
Non-U.S. Defined Benefit Plans | U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 2,487,000,000 1,649,000,000  
Non-U.S. Defined Benefit Plans | Non-U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 4,806,000,000 4,175,000,000  
Non-U.S. Defined Benefit Plans | Corporate debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 3,347,000,000 2,878,000,000  
Non-U.S. Defined Benefit Plans | Government debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,751,000,000 1,653,000,000  
Non-U.S. Defined Benefit Plans | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 50,000,000 23,000,000  
Non-U.S. Defined Benefit Plans | Hybrids, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,223,000,000 1,089,000,000  
Non-U.S. Defined Benefit Plans | Hedge Funds, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 430,000,000 529,000,000  
Non-U.S. Defined Benefit Plans | Real Estate Funds
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,032,000,000 820,000,000  
Non-U.S. Defined Benefit Plans | Insurance Group Annuity Contracts
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 131,000,000 148,000,000  
Non-U.S. Defined Benefit Plans | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 652,000,000 444,000,000  
Non-U.S. Defined Benefit Plans | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 174,000,000 613,000,000  
Non-U.S. Defined Benefit Plans | Level 1
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 7,743,000,000 7,135,000,000  
Non-U.S. Defined Benefit Plans | Level 1 | U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 2,456,000,000 1,621,000,000  
Non-U.S. Defined Benefit Plans | Level 1 | Non-U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 4,059,000,000 4,049,000,000  
Non-U.S. Defined Benefit Plans | Level 1 | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets   2,000,000  
Non-U.S. Defined Benefit Plans | Level 1 | Real Estate Funds
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 470,000,000 449,000,000  
Non-U.S. Defined Benefit Plans | Level 1 | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 648,000,000 439,000,000  
Non-U.S. Defined Benefit Plans | Level 1 | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 110,000,000 575,000,000  
Non-U.S. Defined Benefit Plans | Level 2
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 7,603,000,000 6,272,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 31,000,000 28,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Non-U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 670,000,000 50,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Corporate debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 3,347,000,000 2,878,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Government debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,751,000,000 1,653,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 2,000,000    
Non-U.S. Defined Benefit Plans | Level 2 | Hybrids, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,223,000,000 1,089,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Hedge Funds, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 226,000,000 296,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Real Estate Funds
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 237,000,000 177,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Insurance Group Annuity Contracts
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 50,000,000 60,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 4,000,000 5,000,000  
Non-U.S. Defined Benefit Plans | Level 2 | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 62,000,000 36,000,000  
Non-U.S. Defined Benefit Plans | Level 3
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 737,000,000 614,000,000 656,000,000
Non-U.S. Defined Benefit Plans | Level 3 | U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets     30,000,000
Non-U.S. Defined Benefit Plans | Level 3 | Non-U.S, equity securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 77,000,000 76,000,000  
Non-U.S. Defined Benefit Plans | Level 3 | Corporate debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets     3,000,000
Non-U.S. Defined Benefit Plans | Level 3 | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 48,000,000 21,000,000 20,000,000
Non-U.S. Defined Benefit Plans | Level 3 | Hedge Funds, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 204,000,000 233,000,000 300,000,000
Non-U.S. Defined Benefit Plans | Level 3 | Real Estate Funds
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 325,000,000 194,000,000 199,000,000
Non-U.S. Defined Benefit Plans | Level 3 | Insurance Group Annuity Contracts
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 81,000,000 88,000,000 89,000,000
Non-U.S. Defined Benefit Plans | Level 3 | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets     (4,000,000)
Non-U.S. Defined Benefit Plans | Level 3 | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 2,000,000 2,000,000 19,000,000
Post-Retirement Benefit Plans
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 396,000,000 395,000,000 394,000,000
Post-Retirement Benefit Plans | Corporate debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 17,000,000 17,000,000  
Post-Retirement Benefit Plans | Government debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 22,000,000 22,000,000  
Post-Retirement Benefit Plans | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 234,000,000 235,000,000  
Post-Retirement Benefit Plans | Hybrids, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 1,000,000 1,000,000  
Post-Retirement Benefit Plans | Common Collective Trusts and 103-12 Investment Entities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 42,000,000 49,000,000  
Post-Retirement Benefit Plans | Registered Investment Companies
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 79,000,000 73,000,000  
Post-Retirement Benefit Plans | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 3,000,000 2,000,000  
Post-Retirement Benefit Plans | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets (2,000,000) (4,000,000)  
Post-Retirement Benefit Plans | Level 1
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 82,000,000 75,000,000  
Post-Retirement Benefit Plans | Level 1 | Government debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 5,000,000 6,000,000  
Post-Retirement Benefit Plans | Level 1 | Registered Investment Companies
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 79,000,000 73,000,000  
Post-Retirement Benefit Plans | Level 1 | Other
      
Retirement and post-retirement benefit plans      
Fair value of plan assets (2,000,000) (4,000,000)  
Post-Retirement Benefit Plans | Level 2
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 79,000,000 84,000,000  
Post-Retirement Benefit Plans | Level 2 | Corporate debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 17,000,000 17,000,000  
Post-Retirement Benefit Plans | Level 2 | Government debt securities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 17,000,000 16,000,000  
Post-Retirement Benefit Plans | Level 2 | Common Collective Trusts and 103-12 Investment Entities
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 42,000,000 49,000,000  
Post-Retirement Benefit Plans | Level 2 | Cash and Cash Equivalents
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 3,000,000 2,000,000  
Post-Retirement Benefit Plans | Level 3
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 235,000,000 236,000,000 228,000,000
Post-Retirement Benefit Plans | Level 3 | Private Equity, alternative Investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets 234,000,000 235,000,000 227,000,000
Post-Retirement Benefit Plans | Level 3 | Hybrids, alternative investments
      
Retirement and post-retirement benefit plans      
Fair value of plan assets $ 1,000,000 $ 1,000,000 $ 1,000,000