Fair Value (Details) (USD $) In Millions	Apr. 30, 2011	Oct. 31, 2010
Fair Value Measured Using Level 1
Assets
Money market funds	$ 807	$ 971
Marketable equity securities	8	11
Foreign bonds	8	8
Corporate bonds and other debt securities	3	3
Total Assets, measured at fair value on a recurring basis	826	993
Fair Value Measured Using Level 2
Assets
Time deposits	7,928	6,598
Commercial paper	325
Marketable equity securities	2	3
Foreign bonds	388	365
Corporate bonds and other debt securities	2	6
Interest rate contracts - assets	507	735
Foreign exchange contracts - assets	85	150
Other derivatives - assets	8	5
Total Assets, measured at fair value on a recurring basis	9,245	7,862
Liabilities
Interest rate contracts - liabilities	63	89
Foreign exchange contracts - liabilities	1,598	880
Total Liabilities, measured at fair value on a recurring basis	1,661	969
Fair Value Measured Using Level 3
Assets
Corporate bonds and other debt securities	49	50
Foreign exchange contracts - assets	23	32
Other derivatives - assets	13	6
Total Assets, measured at fair value on a recurring basis	85	88
Liabilities
Foreign exchange contracts - liabilities	1	10
Total Liabilities, measured at fair value on a recurring basis	1	10
Total Balance, measured at fair value on a recurring basis
Assets
Time deposits	7,928	6,598
Commercial paper	325
Money market funds	807	971
Marketable equity securities	10	14
Foreign bonds	396	373
Corporate bonds and other debt securities	54	59
Interest rate contracts - assets	507	735
Foreign exchange contracts - assets	108	182
Other derivatives - assets	21	11
Total Assets, measured at fair value on a recurring basis	10,156	8,943
Liabilities
Interest rate contracts - liabilities	63	89
Foreign exchange contracts - liabilities	1,599	890
Total Liabilities, measured at fair value on a recurring basis	$ 1,662	$ 979