Other Comprehensive Income - Reclassification of Pre-tax Net (Losses) Gains on Cash Flow Hedges into Condensed Combined Statements of Operations (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue	$ (4,147)	$ (4,472)
Cost of revenue	3,569	3,985
Loss before taxes	56	212
Reclassifications of Gains (Losses) into Earnings [Member] | Net Unrealized Gains (Losses) on Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue	(23)	(20)
Cost of revenue	(1)	(1)
Loss before taxes	$ (24)	$ (21)