Balance Sheet Details (Details) (USD $)	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Accounts and financing receivables
Accounts receivable, gross	$ 18,694,000,000	$ 19,006,000,000
Allowance for doubtful accounts	(470,000,000)	(525,000,000)
Accounts receivable, net	18,224,000,000	18,481,000,000
Financing receivables, gross	3,220,000,000	3,050,000,000
Allowance for doubtful accounts - financing receivables	(58,000,000)	(64,000,000)
Financing receivables, net	3,162,000,000	2,986,000,000
Maximum capacity, program for sale of trade receivables	1,500,000,000
Partial recourse facility	1,000,000,000
Non-recourse facility capacity	500,000,000
Trade receivables sold	2,800,000,000	1,700,000,000
Available capacity, program for sale of trade receivables	701,000,000	175,000,000
Inventory
Finished goods	4,869,000,000	4,431,000,000
Purchased parts and fabricated assemblies	2,621,000,000	2,035,000,000
Inventory, net	7,490,000,000	6,466,000,000
Other current assets
Deferred tax assets - short-term	5,374,000,000	5,833,000,000
Value-added taxes receivable from various governments	2,480,000,000	3,366,000,000
Supplier and other receivables	2,762,000,000	2,737,000,000
Prepaid and other current assets	3,486,000,000	3,386,000,000
Other current assets, total	14,102,000,000	15,322,000,000
Long-Term Financing Receivables and Other Assets
Financing receivables, net	4,015,000,000	3,584,000,000
Deferred tax assets - long-term	1,283,000,000	2,070,000,000
Other	5,457,000,000	6,571,000,000
Long-Term Financing Receivables and Other Assets, total	10,755,000,000	12,225,000,000
Other Accrued Liabilities
Other accrued taxes	2,414,000,000	3,216,000,000
Warranty	1,773,000,000	1,774,000,000
Sales and marketing programs	3,317,000,000	3,374,000,000
Other	6,955,000,000	6,932,000,000
Other Accrued Liabilities, total	14,459,000,000	15,296,000,000
Other Liabilities
Pension, post-retirement, and post-employment liabilities	5,414,000,000	6,754,000,000
Deferred tax liability - long-term	5,163,000,000	5,239,000,000
Long-term deferred revenue	3,453,000,000	3,303,000,000
Other long-term liabilities	3,490,000,000	3,765,000,000
Other Liabilities, total	$ 17,520,000,000	$ 19,061,000,000