Property and Equipment, Net Schedule of Future Minimum Lease Payments (Details) $ in Millions	Oct. 31, 2016 USD ($)
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	$ 10
Capital Leases, Future Minimum Payments Due in Two Years	10
Capital Leases, Future Minimum Payments Due in Three Years	9
Capital Leases, Future Minimum Payments Due in Four Years	9
Capital Leases, Future Minimum Payments Due in Five Years	9
Capital Leases, Future Minimum Payments Due Thereafter	2
Capital Leases, Future Minimum Payments Due	49
Capital Leases, Future Minimum Payments, Interest Included in Payments	7
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	42
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	52
Operating Leases, Future Minimum Payments, Due in Two Years	45
Operating Leases, Future Minimum Payments, Due in Three Years	36
Operating Leases, Future Minimum Payments, Due in Four Years	33
Operating Leases, Future Minimum Payments, Due in Five Years	29
Operating Leases, Future Minimum Payments, Due Thereafter	21
Operating Leases, Future Minimum Payments Due	216
Future Minimum Lease Payments Due Current	62
Future Minimum Lease Payments Due in Two Years	55
Future Minimum Lease Payments Due in Three Years	45
Future Minimum Lease Payments Due in Four Years	42
Future Minimum Lease Payments Due in Five Years	38
Future Minimum Lease Payments Due Thereafter	23
Future Minimum Lease Payments Due	$ 265