v3.3.1.900
Debt (Capital Lease Obligations) (Details)
$ in Millions
Dec. 31, 2015
USD ($)
Minimum Lease Payments, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]  
Minimum Lease Payments, Sale Leaseback Transactions, within One Year $ 25 [1]
Minimum Lease Payments, Sale Leaseback Transactions, within Two Years 17 [1]
Minimum Lease Payments, Sale Leaseback Transactions, within Three Years 21 [1]
Minimum Lease Payments, Sale Leaseback Transactions, within Four Years 21 [1]
Minimum Lease Payments, Sale Leaseback Transactions, within Five Years 21 [1]
Minimum Lease Payments, Sale Leaseback Transactions, Thereafter 63 [1]
Minimum Lease Payments, Sale Leaseback Transactions 168 [1]
Interest Portion of Minimum Lease Payments, Sale Leaseback Transactions 61 [1]
Present Value of Future Minimum Lease Payments, Sale Leaseback Transactions 107 [1]
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
Capital Leases, Future Minimum Payments Due, Current 42
Capital Leases, Future Minimum Payments Due in Two Years 41
Capital Leases, Future Minimum Payments Due in Three Years 39
Capital Leases, Future Minimum Payments Due in Four Years 22
Capital Leases, Future Minimum Payments Due in Five Years 20
Capital Leases, Future Minimum Payments Due Thereafter 137
Capital Leases, Future Minimum Payments Due 301
Capital Leases, Future Minimum Payments, Interest Included in Payments 114
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments 187
Total Leases Future Minimum Payments [Abstract]  
Total Leases, Future Minimum Payments Due, Current 67
Total Leases, Future Minimum Payments Due in Two Years 58
Total Leases, Future Minimum Payments Due in Three Years 60
Total Leases, Future Minimum Payments Due in Four Years 43
Total Leases, Future Minimum Payments Due in Five Years 41
Total Leases, Future Minimum Payments Due Thereafter 200
Total Leases, Future Minimum Payments Due 469
Total Leases, Future Minimum Payments, Interest Included in Payments 175
Total Leases, Future Minimum Payments, Present Value of Net Minimum Payments $ 294
[1] Amounts are accounted for as financing transactions under U.S. GAAP and are included in our project financing, notes payable and other amounts above.