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, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue	$ 14,003	$ 12,385	$ 28,520	$ 25,069
Cost of revenue	11,301	10,002	23,236	20,438
Interest and other, net	(881)	(64)	(949)	(145)
Net earnings	1,058	559	2,996	1,170
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	277	(39)	329	(115)
Cost of revenue	0	19	18	19
Operating expenses	(1)	0	(1)	0
Interest and other, net	0	4	0	9
Net earnings	$ 276	$ (16)	$ 346	$ (87)