Financing Receivables and Operating Leases (Detail 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Gross financing receivables
Net Investment	$ 6,670	$ 7,153
Period past due, after which a write-off or specific reserve is created	180 days
Allowance for doubtful accounts
Balance at beginning of year	131	149	130
Provision for doubtful accounts	30	38	42
Deductions, net of recoveries	(50)	(56)	(23)
Balance at end of period	111	131	149
Gross financing receivables collectively evaluated for loss	6,378	6,773
Gross financing receivables individually evaluated for loss	292	380
Allowance for financing receivables collectively evaluated for loss	92	95
Allowance for financing receivables individually evaluated for loss	19	36
Period past due, after which account is put on non-accrual status	90 days
Aging and non-accrual status of gross financing receivables
Current 1-30 days	243	217
Past due 31-60 days	46	50
Past due 61-90 days	12	15
Past due >90 days	49	46
Unbilled sales-type and direct-financing lease receivables	6,320	6,825
Gross financing receivables on non-accrual status	130	199
Gross financing receivables 90 days past due and still accruing interest	162	181
Operating lease assets
Equipment leased to customers	3,977	3,822
Accumulated depreciation	(1,382)	(1,452)
Operating lease assets, net	2,595	2,370
Minimum future rentals on non-cancelable operating leases:
2015	1,487
2016	958
2017	467
2018	156
2019	50
Thereafter	6
Total	3,124
Low Risk
Gross financing receivables
Net Investment	3,536	3,948
Moderate Risk
Gross financing receivables
Net Investment	3,022	3,084
High Risk
Gross financing receivables
Net Investment	$ 112	$ 121