Balance Sheet Details (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Apr. 30, 2015	Oct. 31, 2014
Accounts Receivable, Net
Accounts receivable, gross	$ 12,545	$ 14,064
Allowance for doubtful accounts	(225)
Accounts receivable, net	12,320	13,832
Allowance for Doubtful Accounts Receivable
Balance at beginning of period	232
Provision for doubtful accounts, net of recoveries	22
Deductions	(29)
Balance at end of period	225
Non-recourse arrangements:
Maximum program capacity	1,065	1,083
Utilized capacity	(649)	(613)
Available capacity	416	470
Partial-recourse arrangements:
Maximum program capacity	1,830	1,877
Utilized capacity	(1,393)	(1,500)
Available capacity	437	377
Total arrangements:
Maximum program capacity	2,895	2,960
Utilized capacity	(2,042)	(2,113)
Available capacity	853	847
Amounts due from third parties for transferred trade receivables
Non recourse arrangements	9	78
Partial-recourse arrangements	331	381
Total arrangements	340
Trade receivables sold and cash received
Balance at beginning of period	459
Trade receivables sold	5,445
Cash receipts	(5,533)
Foreign currency and other	(31)
Balance at end of period	340
Inventory
Finished goods	3,847	3,973
Purchased parts and fabricated assemblies	2,380	2,442
Inventory, net	$ 6,227	$ 6,415