Stockholders' Deficit - Schedule of Changes and Reclassifications Related to Other Comprehensive Income, Net of Taxes Footnotes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue	$ (12,385)	$ (11,588)	$ (25,069)	$ (23,834)
Cost of revenue	10,002	9,338	20,438	19,299
Interest and other, net	64	5	145	99
Total	(559)	(629)	(1,170)	(1,221)
Net unrealized gains (losses) on cash flow hedges | Reclassifications of losses (gains) into earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue	(39)	(88)	(115)	(166)
Cost of revenue	19	32	19	72
Interest and other, net	4	(6)	9	(2)
Total	$ (16)	$ (62)	$ (87)	$ (96)