Balance Sheet Details (Details) (USD $)	3 Months Ended		9 Months Ended
	Jul. 31, 2013 item	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012	Oct. 31, 2012
Accounts Receivable, Net
Accounts receivable, gross	$ 14,703,000,000		$ 14,703,000,000		$ 16,871,000,000
Allowance for doubtful accounts	(367,000,000)		(367,000,000)		(464,000,000)
Accounts receivable, net	14,336,000,000		14,336,000,000		16,407,000,000
Number of cases providing partial recourse	1
Non-recourse arrangements
Aggregate maximum program capacity	748,000,000		748,000,000		636,000,000
Aggregate available capacity	357,000,000		357,000,000		434,000,000
Aggregate utilized capacity	391,000,000		391,000,000		202,000,000
Partial recourse arrangement
Maximum program capacity	866,000,000		866,000,000		876,000,000
Available capacity	481,000,000		481,000,000		413,000,000
Utilized capacity	385,000,000		385,000,000		463,000,000
Total arrangements
Aggregate maximum program capacity	1,614,000,000		1,614,000,000		1,512,000,000
Aggregate available capacity	838,000,000		838,000,000		847,000,000
Aggregate utilized capacity	776,000,000		776,000,000		665,000,000
Trade receivables sold	1,100,000,000	1,000,000,000	3,800,000,000	3,100,000,000
Inventory
Finished goods	4,322,000,000		4,322,000,000		4,094,000,000
Purchased parts and fabricated assemblies	2,218,000,000		2,218,000,000		2,223,000,000
Inventory, net	$ 6,540,000,000		$ 6,540,000,000		$ 6,317,000,000