Financial Instruments - Pre-tax Effect of Derivative Instruments in Cash Flow and Net Investment Hedging Relationships (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Net revenue	$ 8,209	$ 8,005	$ 23,210	$ 25,046
Cost of products	(8,062)	(5,360)	(22,425)	(21,478)
Interest and other, net	(97)	(69)	(260)	(195)
Earnings from continuing operations before taxes	61	2,564	500	3,307
Net loss from discontinued operations	(83)	(185)	(196)	(282)
Net earnings (loss)	165	2,272	(180)	2,859
Foreign currency contracts \| Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	(133)	172	7	108
Foreign currency contracts \| Cash flow hedges \| Gains (Losses) Reclassified from Accumulated OCI Into Earnings (Effective Portion) \| Reclassifications of gains (losses) into earnings
Derivative Instruments, Gain (Loss) [Line Items]
Net revenue	(45)	(52)	13	(24)
Cost of products	0		0
Other operating expenses	1	0	1	0
Interest and other, net	29	62	178	187
Earnings from continuing operations before taxes	(15)	10	192	163
Net loss from discontinued operations	0	9	39	47
Net earnings (loss)	(15)	19	231	210
Foreign currency contracts \| Cash flow hedges \| Net revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	(161)	50	(162)	(103)
Foreign currency contracts \| Cash flow hedges \| Cost of products
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	0		(1)
Foreign currency contracts \| Cash flow hedges \| Other operating expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	0	(2)	1	0
Foreign currency contracts \| Cash flow hedges \| Interest and other, net
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	28	58	170	177
Foreign currency contracts \| Cash flow hedges \| Net earnings (loss) from continuing operations
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	(133)	106	8	74
Foreign currency contracts \| Cash flow hedges \| Net loss from discontinued operations
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	0	66	(1)	34
Foreign currency contracts \| Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	(97)	12	(107)	(68)
Foreign currency contracts \| Net investment hedges \| Gains (Losses) Reclassified from Accumulated OCI Into Earnings (Effective Portion) \| Reclassifications of gains (losses) into earnings
Derivative Instruments, Gain (Loss) [Line Items]
Interest and other, net	0	0	0	0
Earnings from continuing operations before taxes	0	0	0	0
Net loss from discontinued operations	0	0	0	0
Net earnings (loss)	0	0	0	0
Foreign currency contracts \| Net investment hedges \| Interest and other, net
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	(97)	12	(107)	(68)
Foreign currency contracts \| Net investment hedges \| Net earnings (loss) from continuing operations
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	(97)	12	(107)	(68)
Foreign currency contracts \| Net investment hedges \| Net loss from discontinued operations
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)	$ 0	$ 0	$ 0	$ 0

Total costs of sales and operating expenses for the period.

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