Balance Sheet Components Schedule of Capital Leases (Details) $ in Millions	Sep. 30, 2016 USD ($)
Capital Leased Assets [Line Items]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	$ 7
Capital Leases, Future Minimum Payments Due in Two Years	6
Capital Leases, Future Minimum Payments Due in Three Years	6
Capital Leases, Future Minimum Payments Due in Four Years	6
Capital Leases, Future Minimum Payments Due in Five Years	6
Capital Leases, Future Minimum Payments Due Thereafter	78
Capital Leases, Future Minimum Payments Due	109
Capital Leases, Future Minimum Payments, Interest Included in Payments	55
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	$ 54