Balance Sheet Details (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2015	Oct. 31, 2014
Accounts Receivable, Net
Accounts receivable, gross				$ 13,552	$ 14,064
Allowance for doubtful accounts	$ (232)	$ (332)	$ (464)	(189)	(232)
Accounts receivable, net				13,363	13,832
Allowance for doubtful accounts receivable
Balance at beginning of period	232	332	464
Provision for doubtful accounts	46	25	23
Deductions, net of recoveries	(89)	(125)	(155)
Balance at end of period	189	232	332
Trade receivables sold and cash received
Balance at beginning of period	459	172	228
Trade receivables sold	10,733	9,627	4,241
Cash receipts	(10,998)	(9,306)	(4,305)
Foreign currency and other	(33)	(34)	8
Balance at end of period	161	459	172
Non-recourse arrangements:
Maximum program capacity				1,427	1,083
Utilized capacity				(568)	(613)
Available capacity				859	470
Partial-recourse arrangements:
Maximum program capacity				1,860	1,877
Utilized capacity				(1,381)	(1,500)
Available capacity				479	377
Total arrangements:
Maximum program capacity				3,287	2,960
Utilized capacity				(1,949)	(2,113)
Available capacity				1,338	847
Amounts due from third parties for transferred trade receivables
Non recourse arrangements				21	78
Partial-recourse arrangements				140	381
Total arrangements	$ 459	$ 172	$ 228	161	459
Inventory
Finished goods				4,337	3,973
Purchased parts and fabricated assemblies				2,148	2,442
Inventory, net				6,485	6,415
Other Current Assets
Deferred tax assets - short-term				2,242	2,754
Value-added taxes receivable				2,481	2,169
Supplier and other receivables				2,749	2,378
Prepaid and other current assets				4,116	4,518
Other current assets, total				11,588	11,819
Long-Term Financing Receivables and Other Assets
Financing receivables, net				3,676	3,613
Deferred tax assets				871	740
Deferred costs				742	755
Other				3,761	3,346
Long-Term Financing Receivables and Other Assets, total				9,050	8,454
Other Accrued Liabilities
Accrued taxes- other				2,371	2,269
Warranty				1,147	1,325
Sales and marketing programs				3,089	2,986
Other				5,417	5,499
Other Accrued Liabilities, total				12,024	12,079
Other Liabilities
Pension, post-retirement, and post-employment liabilities				5,630	6,379
Deferred revenue-long term				4,373	3,931
Deferred tax liability - long-term				295	1,124
Tax liability- long-term				2,593	2,861
Other long-term liabilities				1,869	2,010
Other Liabilities, total				$ 14,760	$ 16,305