PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 6) - USD ($) $ in Millions | Oct. 31, 2015 | Oct. 31, 2014 | Oct. 31, 2013 |
Pensions | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | $ 11,164 | $ 11,447 | $ 11,008 |
Pensions | Level 1 and 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 6,821 | 7,029 | |
Pensions | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 5,124 | 5,771 | |
Pensions | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1,697 | 1,258 | |
Pensions | Cash and Short-term Investments | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 867 | 977 | |
Pensions | Cash and Short-term Investments | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 378 | 426 | |
Pensions | Cash and Short-term Investments | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 489 | 551 | |
Pensions | U.S. Equity Securities and Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 3,075 | 3,088 | |
Pensions | U.S. Equity Securities and Funds | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 3,053 | 3,088 | |
Pensions | U.S. Equity Securities and Funds | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 22 | | |
Pensions | International Equity Securities and Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | | 2,046 | |
Pensions | International Equity Securities and Funds | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | | 2,046 | |
Pensions | International Equity Securities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1,802 | | |
Pensions | International Equity Securities | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1,781 | | |
Pensions | International Equity Securities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 21 | | |
Pensions | Government and Agency Securities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 386 | 434 | |
Pensions | Government and Agency Securities | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 197 | 412 | |
Pensions | Government and Agency Securities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 189 | 22 | |
Pensions | Corporate Debt Securities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 751 | 322 | |
Pensions | Corporate Debt Securities | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | 1 | |
Pensions | Corporate Debt Securities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 750 | 321 | |
Pensions | Mortgage-Backed Securities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 83 | 96 | |
Pensions | Mortgage-Backed Securities | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | | 11 | |
Pensions | Mortgage-Backed Securities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 83 | 85 | |
Pensions | Fixed Income Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 26 | 127 | |
Pensions | Fixed Income Funds | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 26 | 127 | |
Pensions | Real Estate | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 133 | 132 | |
Pensions | Real Estate | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 130 | 132 | |
Pensions | Real Estate | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 3 | | |
Pensions | Derivative Contracts - Assets | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 190 | 322 | |
Pensions | Derivative Contracts - Assets | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 25 | 14 | |
Pensions | Derivative Contracts - Assets | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 165 | 308 | |
Pensions | Derivative Contracts - Assets | Interest Rate Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 137 | 246 | |
Pensions | Derivative Contracts - Assets | Foreign Exchange Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 17 | 61 | |
Pensions | Derivative Contracts - Assets | Equity Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 30 | 11 | |
Pensions | Derivative Contracts - Assets | Other Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 6 | 4 | |
Pensions | Derivative Contracts - Liabilities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (26) | (39) | |
Pensions | Derivative Contracts - Liabilities | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (4) | (9) | |
Pensions | Derivative Contracts - Liabilities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (22) | (30) | |
Pensions | Derivative Contracts - Liabilities | Interest Rate Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (7) | (6) | |
Pensions | Derivative Contracts - Liabilities | Foreign Exchange Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (15) | (25) | |
Pensions | Derivative Contracts - Liabilities | Other Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (4) | (8) | |
Pensions | Receivables, Payables and Other | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 4 | 1 | |
Pensions | Receivables, Payables and Other | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 3 | | |
Pensions | Receivables, Payables and Other | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | 1 | |
Pensions | Securities Lending Collateral | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 745 | 847 | |
Pensions | Securities Lending Collateral | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 92 | | |
Pensions | Securities Lending Collateral | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 653 | 847 | |
Pensions | Securities Lending Liability | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (745) | (847) | |
Pensions | Securities Lending Liability | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (92) | | |
Pensions | Securities Lending Liability | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (653) | (847) | |
Pensions | Securities Sold Short | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (470) | (477) | |
Pensions | Securities Sold Short | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (466) | (477) | |
Pensions | Securities Sold Short | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (4) | | |
Pensions | Investments at Net Asset Value - Short-Term Investments | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 195 | 108 | |
Pensions | Investments at Net Asset Value - U.S. Equity Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 33 | 38 | |
Pensions | Investments at Net Asset Value - International Equity Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 540 | 382 | |
Pensions | Investments at Net Asset Value - Corporate Debt Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 26 | | |
Pensions | Investments at Net Asset Value - Fixed Income Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 495 | 957 | |
Pensions | Investments at Net Asset Value - Real Estate | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 501 | | |
Pensions | Investments at Net Asset Value - Real Estate Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | | 442 | |
Pensions | Investments at Net Asset Value - Hedge Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 625 | 593 | |
Pensions | Investments at Net Asset Value - Private Equity/Venture Capital | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1,604 | 1,578 | |
Pensions | Investments at Net Asset Value - Other Investments | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 324 | 320 | |
Health Care and Life Insurance | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 689 | 957 | $ 1,157 |
Health Care and Life Insurance | Level 1 and 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 435 | 627 | |
Health Care and Life Insurance | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 368 | 557 | |
Health Care and Life Insurance | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 67 | 70 | |
Health Care and Life Insurance | Cash and Short-term Investments | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 35 | 52 | |
Health Care and Life Insurance | Cash and Short-term Investments | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 25 | 37 | |
Health Care and Life Insurance | Cash and Short-term Investments | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 10 | 15 | |
Health Care and Life Insurance | U.S. Equity Securities and Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 229 | 310 | |
Health Care and Life Insurance | U.S. Equity Securities and Funds | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 229 | 310 | |
Health Care and Life Insurance | International Equity Securities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 39 | 57 | |
Health Care and Life Insurance | International Equity Securities | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 39 | 57 | |
Health Care and Life Insurance | Government and Agency Securities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 84 | 164 | |
Health Care and Life Insurance | Government and Agency Securities | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 78 | 159 | |
Health Care and Life Insurance | Government and Agency Securities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 6 | 5 | |
Health Care and Life Insurance | Corporate Debt Securities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 35 | 33 | |
Health Care and Life Insurance | Corporate Debt Securities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 35 | 33 | |
Health Care and Life Insurance | Mortgage-Backed Securities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 13 | 13 | |
Health Care and Life Insurance | Mortgage-Backed Securities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 13 | 13 | |
Health Care and Life Insurance | Fixed Income Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | 1 | |
Health Care and Life Insurance | Fixed Income Funds | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | 1 | |
Health Care and Life Insurance | Real Estate | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 4 | 5 | |
Health Care and Life Insurance | Real Estate | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 4 | 5 | |
Health Care and Life Insurance | Derivative Contracts - Assets | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 4 | 5 | |
Health Care and Life Insurance | Derivative Contracts - Assets | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | | |
Health Care and Life Insurance | Derivative Contracts - Assets | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 3 | 5 | |
Health Care and Life Insurance | Derivative Contracts - Assets | Interest Rate Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 2 | 3 | |
Health Care and Life Insurance | Derivative Contracts - Assets | Foreign Exchange Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | 2 | |
Health Care and Life Insurance | Derivative Contracts - Assets | Equity Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | | |
Health Care and Life Insurance | Derivative Contracts - Liabilities | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | | (1) | |
Health Care and Life Insurance | Derivative Contracts - Liabilities | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | | (1) | |
Health Care and Life Insurance | Derivative Contracts - Liabilities | Foreign Exchange Contracts | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | | (1) | |
Health Care and Life Insurance | Receivables, Payables and Other | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | 1 | |
Health Care and Life Insurance | Receivables, Payables and Other | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 1 | 1 | |
Health Care and Life Insurance | Securities Lending Collateral | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 65 | 126 | |
Health Care and Life Insurance | Securities Lending Collateral | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 9 | | |
Health Care and Life Insurance | Securities Lending Collateral | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 56 | 126 | |
Health Care and Life Insurance | Securities Lending Liability | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (65) | (126) | |
Health Care and Life Insurance | Securities Lending Liability | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (9) | | |
Health Care and Life Insurance | Securities Lending Liability | Level 2 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (56) | (126) | |
Health Care and Life Insurance | Securities Sold Short | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (10) | (13) | |
Health Care and Life Insurance | Securities Sold Short | Level 1 | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | (10) | (13) | |
Health Care and Life Insurance | Investments at Net Asset Value - Short-Term Investments | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 4 | 3 | |
Health Care and Life Insurance | Investments at Net Asset Value - International Equity Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 103 | 121 | |
Health Care and Life Insurance | Investments at Net Asset Value - Fixed Income Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 47 | 69 | |
Health Care and Life Insurance | Investments at Net Asset Value - Real Estate Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 10 | 12 | |
Health Care and Life Insurance | Investments at Net Asset Value - Hedge Funds | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 50 | 72 | |
Health Care and Life Insurance | Investments at Net Asset Value - Private Equity/Venture Capital | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | 34 | 44 | |
Health Care and Life Insurance | Investments at Net Asset Value - Other Investments | | | |
Fair Values of Pension Plan and Health Care Assets by Category | | | |
Total net assets | $ 6 | $ 9 | |