Property and Equipment, Net Schedule of Future Minimum Lease Payments (Details) $ in Millions	Oct. 31, 2015 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	10
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	11
Capital Leases, Future Minimum Payments Due	59
Capital Leases, Future Minimum Payments, Interest Included in Payments	10
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	49
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	56
Operating Leases, Future Minimum Payments, Due in Two Years	44
Operating Leases, Future Minimum Payments, Due in Three Years	38
Operating Leases, Future Minimum Payments, Due in Four Years	31
Operating Leases, Future Minimum Payments, Due in Five Years	28
Operating Leases, Future Minimum Payments, Due Thereafter	45
Operating Leases, Future Minimum Payments Due	242
Future Minimum Lease Payments Due Current	66
Future Minimum Lease Payments Due in Two Years	54
Future Minimum Lease Payments Due in Three Years	48
Future Minimum Lease Payments Due in Four Years	40
Future Minimum Lease Payments Due in Five Years	37
Future Minimum Lease Payments Due Thereafter	56
Future Minimum Lease Payments Due	$ 301