Balance Sheet Details (Details) (USD $)	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012	Oct. 31, 2012
Accounts Receivable, Net
Accounts receivable, gross	$ 15,013,000,000		$ 15,013,000,000		$ 16,871,000,000
Allowance for doubtful accounts	(407,000,000)		(407,000,000)		(464,000,000)
Accounts receivable, net	14,606,000,000		14,606,000,000		16,407,000,000
Non-recourse arrangements
Aggregate maximum program capacity	743,000,000		743,000,000		636,000,000
Aggregate available capacity	376,000,000		376,000,000		434,000,000
Partial recourse arrangement
Maximum program capacity	899,000,000		899,000,000		876,000,000
Available capacity	507,000,000		507,000,000		413,000,000
Trade receivables sold	1,200,000,000	1,000,000,000	2,700,000,000	2,100,000,000
Inventory
Finished goods	3,778,000,000		3,778,000,000		4,094,000,000
Purchased parts and fabricated assemblies	2,221,000,000		2,221,000,000		2,223,000,000
Inventory, net	$ 5,999,000,000		$ 5,999,000,000		$ 6,317,000,000