Stockholders' Deficit - Schedule of Changes and Reclassifications Related to Other Comprehensive Income, Net of Taxes Footnotes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue	$ 14,586	$ 13,060	$ 43,106	$ 38,129
Cost of revenue	11,898	10,633	35,134	31,071
Interest and other, net	(62)	(56)	(1,011)	(201)
Net earnings	880	696	3,876	1,866
Net unrealized (losses) gains on cash flow hedges | Reclassifications of losses (gains) into earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue	20	26	349	(89)
Cost of revenue	(4)	13	14	32
Operating expenses	1	(1)	0	(1)
Interest and other, net	0	0	0	9
Net earnings	$ 17	$ 38	$ 363	$ (49)