Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Segment Reporting Information
Net Revenue	$ 27,585	$ 27,226	$ 83,048	$ 83,167
Earnings (Loss) from operations	1,458	1,855	5,277	5,208
Stock based compensation expense	(132)	(107)	(432)	(398)
Amortization of intangible assets	(227)	(356)	(774)	(1,056)
Restructuring charges	(649)	(81)	(1,015)	(619)
Interest and other, net	(145)	(146)	(482)	(518)
Earnings before taxes	1,313	1,709	4,795	4,690
Operating segments
Segment Reporting Information
Net Revenue	28,540	28,172	85,760	85,737
Earnings (Loss) from operations	2,733	2,588	8,143	7,763
Elimination of intersegment net revenue and other
Segment Reporting Information
Net Revenue	(955)	(946)	(2,712)	(2,570)
Significant Reconciling Items
Segment Reporting Information
Corporate and unallocated costs and eliminations	(265)	(185)	(637)	(463)
Stock based compensation expense	(132)	(107)	(432)	(398)
Amortization of intangible assets	(227)	(356)	(774)	(1,056)
Restructuring charges	(649)	(81)	(1,015)	(619)
Acquisition-related charges	(2)	(4)	(8)	(19)
Interest and other, net	$ (145)	$ (146)	$ (482)	$ (518)