Financing Receivables and Operating Leases (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Gross financing receivables
Net Investment	$ 7,153	$ 7,693
Period past due, after which a write-off or specific reserve is created	180 days
Allowance for doubtful accounts
Balance at beginning of year	149	130	140
Provision for doubtful accounts	38	42	58
Deductions, net of recoveries	(56)	(23)	(68)
Balance at end of year	131	149	130
Allowance for financing receivables collectively evaluated for loss	95	104
Allowance for financing receivables individually evaluated for loss	36	45
Gross financing receivables individually evaluated for loss	380	338
Gross financing receivables collectively evaluated for loss	6,773	7,355
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	217	216
Past due 31-60 days	50	53
Past due 61-90 days	15	13
Past due >90 days	46	51
Unbilled sales-type and direct-financing lease receivables	6,825	7,360
Gross financing receivables on non-accrual status	199	225
Gross financing receivables 90 days past due and still accruing interest	181	113
Operating lease assets
Equipment leased to customers	3,822	3,865
Accumulated depreciation	(1,452)	(1,499)
Operating lease assets, net	2,370	2,366
Minimum future rentals on non-cancelable operating leases:
2014	1,212
2015	759
2016	346
2017	93
Thereafter	28
Total	2,438
Low
Gross financing receivables
Net Investment	3,948	4,461
Moderate
Gross financing receivables
Net Investment	3,084	3,151
High
Gross financing receivables
Net Investment	$ 121	$ 81