v2.4.0.8
Debt (Capital Lease Obligations) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
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 25 [1]
Minimum Lease Payments, Sale Leaseback Transactions, within Three Years 25 [1]
Minimum Lease Payments, Sale Leaseback Transactions, within Four Years 17 [1]
Minimum Lease Payments, Sale Leaseback Transactions, within Five Years 21 [1]
Minimum Lease Payments, Sale Leaseback Transactions, Thereafter 106 [1]
Minimum Lease Payments, Sale Leaseback Transactions 219 [1]
Interest Portion of Minimum Lease Payments, Sale Leaseback Transactions 84 [1]
Present Value of Future Minimum Lease Payments, Sale Leaseback Transactions 135 [1]
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
Capital Leases, Future Minimum Payments Due, Current 51
Capital Leases, Future Minimum Payments Due in Two Years 38
Capital Leases, Future Minimum Payments Due in Three Years 40
Capital Leases, Future Minimum Payments Due in Four Years 38
Capital Leases, Future Minimum Payments Due in Five Years 37
Capital Leases, Future Minimum Payments Due Thereafter 125
Capital Leases, Future Minimum Payments Due 329
Capital Leases, Future Minimum Payments, Interest Included in Payments 126
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments 203
Total Leases Future Minimum Payments [Abstract]  
Total Leases, Future Minimum Payments Due, Current 76
Total Leases, Future Minimum Payments Due in Two Years 63
Total Leases, Future Minimum Payments Due in Three Years 65
Total Leases, Future Minimum Payments Due in Four Years 55
Total Leases, Future Minimum Payments Due in Five Years 58
Total Leases, Future Minimum Payments Due Thereafter 231
Total Leases, Future Minimum Payments Due 548
Total Leases, Future Minimum Payments, Interest Included in Payments 210
Total Leases, Future Minimum Payments, Present Value of Net Minimum Payments $ 338
[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.