Financial Instruments (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Portion of the hedging instruments gain or loss excluded from the assessment of effectiveness for fair value, cash flow or net investment hedges			$ 0
Pre-tax effect of derivative instruments not designated as hedging instruments on the Consolidated Condensed Statements of Earnings
Gain (Loss) recognized in income on derivatives not designated as hedges	(83)	(167)	131	32
Interest rate contracts \| Interest and other, net
Pre-tax effect of derivative instruments and related hedged items in a fair value hedging relationship
Gain (Loss) Recognized in Earnings on Derivative	(80)	(22)	61	(46)
Gain (Loss) Recognized in Earnings on Related Hedged Item	80	22	(61)	46
Foreign currency contracts \| Interest and other, net
Pre-tax effect of derivative instruments not designated as hedging instruments on the Consolidated Condensed Statements of Earnings
Gain (Loss) recognized in income on derivatives not designated as hedges	(81)	(169)	136	40
Other derivatives \| Interest and other, net
Pre-tax effect of derivative instruments not designated as hedging instruments on the Consolidated Condensed Statements of Earnings
Gain (Loss) recognized in income on derivatives not designated as hedges	(2)	2	(5)	(8)
Cash flow hedges
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective portion)	(18)	(309)	613	(239)
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	556	(101)	890	(210)
Gain expected to be reclassified from Accumulated OCI into earnings in next 12 months			8
Cash flow hedges \| Foreign currency contracts \| Net revenue
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective portion)	(84)	(311)	653	(136)
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	533	(63)	867	(126)
Cash flow hedges \| Foreign currency contracts \| Cost of products
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective portion)	(2)	9	(140)	(78)
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(43)	(21)	(69)	(44)
Cash flow hedges \| Foreign currency contracts \| Other operating expenses
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective portion)	1	11	(2)	11
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(3)	(3)	(7)	(7)
Cash flow hedges \| Foreign currency contracts \| Interest and other, net
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective portion)	67	(18)	102	(36)
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	69	(14)	99	(33)
Net investment hedges \| Foreign currency contracts \| Interest and other, net
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective portion)	$ (6)	$ (67)	$ 123	$ (1)

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (c)

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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The net gain (loss) relating to components of the gain (loss) on the cash flow hedging instrument excluded from the assessment of cash flow hedge effectiveness. Recognized in earnings.

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Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

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