PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 6) (USD $) In Millions, unless otherwise specified	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	$ 1,969	$ 1,765	$ 1,443
Real Estate | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	436	437	378
Private Equity/Venture Capital | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1,373	1,178	912
Hedge Funds | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	160	150	153
Pensions
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	10,017	9,552	9,504
Pensions | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	4,488	3,989
Pensions | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	3,637	3,881
Pensions | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1,892	1,682
Pensions | Cash and Short-term Investments
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1,166	1,074
Pensions | Cash and Short-term Investments | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	287	179
Pensions | Cash and Short-term Investments | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	879	895
Pensions | U.S. Equity Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	2,481	2,070
Pensions | U.S. Equity Securities | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	2,481	2,070
Pensions | U.S. Equity Funds
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	43	49
Pensions | U.S. Equity Funds | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	8	11
Pensions | U.S. Equity Funds | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	35	38
Pensions | International Equity Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1,477	1,086
Pensions | International Equity Securities | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1,477	1,086
Pensions | International Equity Funds
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	411	319
Pensions | International Equity Funds | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	49	29
Pensions | International Equity Funds | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	362	290
Pensions | Government and Agency Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	404	543
Pensions | Government and Agency Securities | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	379	516
Pensions | Government and Agency Securities | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	25	27
Pensions | Corporate Debt Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	220	196
Pensions | Corporate Debt Securities | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	220	196
Pensions | Mortgage-backed Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	126	180
Pensions | Mortgage-backed Securities | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	126	180
Pensions | Fixed Income Funds
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	853	1,077
Pensions | Fixed Income Funds | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	92	54
Pensions | Fixed Income Funds | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	761	1,023
Pensions | Real Estate
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	537	505
Pensions | Real Estate | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	104	75
Pensions | Real Estate | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	14	14
Pensions | Real Estate | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	419	416
Pensions | Private Equity/Venture Capital
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1,319	1,123
Pensions | Private Equity/Venture Capital | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1,319	1,123
Pensions | Hedge Funds
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	578	608
Pensions | Hedge Funds | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	2	3
Pensions | Hedge Funds | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	422	462
Pensions | Hedge Funds | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	154	143
Pensions | Other Investments
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	508	448
Pensions | Other Investments | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1
Pensions | Other Investments | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	507	448
Pensions | Derivative Contracts - Assets
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	721	787
Pensions | Derivative Contracts - Assets | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1	21
Pensions | Derivative Contracts - Assets | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	720	766
Pensions | Derivative Contracts - Assets | Interest Rate Contracts
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	707	742
Pensions | Derivative Contracts - Assets | Foreign Exchange Contracts
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	8	19
Pensions | Derivative Contracts - Assets | Other Contracts
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	6	26
Pensions | Derivative Contracts - Liabilities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(454)	(473)
Pensions | Derivative Contracts - Liabilities | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(20)	(15)
Pensions | Derivative Contracts - Liabilities | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(434)	(458)
Pensions | Derivative Contracts - Liabilities | Interest Rate Contracts
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(418)	(442)
Pensions | Derivative Contracts - Liabilities | Foreign Exchange Contracts
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(12)	(17)
Pensions | Derivative Contracts - Liabilities | Other Contracts
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(24)	(14)
Pensions | Receivables, Payables and Other
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(41)	(40)
Pensions | Receivables, Payables and Other | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(41)	(40)
Pensions | Securities Lending Collateral
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	223	750
Pensions | Securities Lending Collateral | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	223	750
Pensions | Securities Lending Liability
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(223)	(750)
Pensions | Securities Lending Liability | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(223)	(750)
Pensions | Securities Sold Short
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(332)
Pensions | Securities Sold Short | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(332)
Health Care and Life Insurance
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	1,287	1,459	1,637
Health Care and Life Insurance | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	682	776
Health Care and Life Insurance | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	528	600
Health Care and Life Insurance | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	77	83
Health Care and Life Insurance | Cash and Short-term Investments
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	78	58
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	11	7
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	67	51
Health Care and Life Insurance | U.S. Equity Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	319	372
Health Care and Life Insurance | U.S. Equity Securities | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	319	372
Health Care and Life Insurance | U.S. Equity Funds
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	67	84
Health Care and Life Insurance | U.S. Equity Funds | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	67	84
Health Care and Life Insurance | International Equity Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	69	64
Health Care and Life Insurance | International Equity Securities | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	69	64
Health Care and Life Insurance | International Equity Funds
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	200	210
Health Care and Life Insurance | International Equity Funds | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	200	210
Health Care and Life Insurance | Government and Agency Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	218	250
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	215	246
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	3	4
Health Care and Life Insurance | Corporate Debt Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	35	39
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	39
Health Care and Life Insurance | Mortgage-backed Securities
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	15	22
Health Care and Life Insurance | Mortgage-backed Securities | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	15	22
Health Care and Life Insurance | Fixed Income Funds
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	72	107
Health Care and Life Insurance | Fixed Income Funds | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	72	107
Health Care and Life Insurance | Real Estate
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	53	57
Health Care and Life Insurance | Real Estate | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	7	4
Health Care and Life Insurance | Real Estate | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	29	32
Health Care and Life Insurance | Real Estate | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	17	21
Health Care and Life Insurance | Private Equity/Venture Capital
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	54	55
Health Care and Life Insurance | Private Equity/Venture Capital | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	54	55
Health Care and Life Insurance | Hedge Funds
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	85	110
Health Care and Life Insurance | Hedge Funds | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	79	103
Health Care and Life Insurance | Hedge Funds | Level 3
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	6	7
Health Care and Life Insurance | Other Investments
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	21	22
Health Care and Life Insurance | Other Investments | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	21	22
Health Care and Life Insurance | Derivative Contracts - Assets
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	8	12
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	8	11
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	7	10
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	1
Health Care and Life Insurance | Derivative Contracts - Assets | Other 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)	(2)
Health Care and Life Insurance | Derivative Contracts - Liabilities | Level 1
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)	(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)	(1)
Health Care and Life Insurance | Derivative Contracts - Liabilities | Other 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	8	(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	8	(1)
Health Care and Life Insurance | Securities Lending Collateral
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	38	215
Health Care and Life Insurance | Securities Lending Collateral | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	38	215
Health Care and Life Insurance | Securities Lending Liability
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(38)	(215)
Health Care and Life Insurance | Securities Lending Liability | Level 2
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(38)	(215)
Health Care and Life Insurance | Securities Sold Short
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	(14)
Health Care and Life Insurance | Securities Sold Short | Level 1
Fair Values of Pension Plan and Health Care Assets by Category
Total net assets	$ (14)