Balance Sheet Details (Detail) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2016	Jan. 31, 2016	Oct. 31, 2015
Accounts Receivable, Net
Accounts receivable, gross		$ 4,197	$ 4,905
Allowance for doubtful accounts	$ (80)	(83)	(80)
Accounts receivable, net		4,114	4,825
Allowance for doubtful accounts receivable
Balance at beginning of period	80
Provision for doubtful accounts	11
Deductions, net of recoveries	(8)
Balance at end of period	83
Trade receivables sold and cash received
Balance at beginning of period	93
Trade receivables sold	1,876
Cash receipts	(1,877)
Foreign currency and other	(3)
Balance at end of period	$ 89
Inventory
Finished goods		2,477	2,820
Purchased parts and fabricated assemblies		1,575	1,468
Inventory, net		4,052	4,288
Other Current Assets
Value-added taxes receivable		759	942
Supplier and other receivables		1,223	1,316
Prepaid and other current assets		1,319	1,193
Deferred tax assets			1,047
Other current assets, total		3,301	4,498
Other Non Current Assets
Tax indemnifications receivable		989
Deferred tax assets		882	216
Other		1,282	1,376
Other non-current assets, total		3,153	1,592
Other Accrued Liabilities
Accrued taxes- other		743	1,007
Warranty		843	871
Sales and marketing programs		2,018	2,181
Other		2,469	2,182
Other accrued liabilities, total		6,073	6,241
Other Non-Current Liabilities
Pension, post-retirement, and post-employment liabilities		2,124	2,203
Deferred tax liability		1,977	1,813
Tax liability		1,267	1,803
Deferred revenue		825	812
Tax indemnifications payable		97
Other		692	783
Other non-current liabilities, total		$ 6,982	$ 7,414