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Debt Obligations Level 4 (Details) - Scheduled Maturities - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt and Commitments Maturities [Line Items]      
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months $ 105    
Operating Leases, Future Minimum Payments Due, Next Twelve Months 25    
Capital Leases, Future Minimum Payments Due, Next Twelve Months 3    
Long-term Debt, Maturities, Repayments of Principal in Year Two 712    
Capital Leases, Future Minimum Payments Due in Two Years 2    
Operating Leases, Future Minimum Payments, Due in Two Years 17    
Long-term Debt, Maturities, Repayments of Principal in Year Three 5    
Capital Leases, Future Minimum Payments Due in Three Years 2    
Operating Leases, Future Minimum Payments, Due in Three Years 10    
Long-term Debt, Maturities, Repayments of Principal in Year Four 2,442    
Capital Leases, Future Minimum Payments Due in Four Years 5    
Operating Leases, Future Minimum Payments, Due in Four Years 6    
Long-term Debt, Maturities, Repayments of Principal in Year Five 77    
Capital Leases, Future Minimum Payments Due in Five Years 0    
Operating Leases, Future Minimum Payments, Due in Five Years 5    
Long-term Debt, Maturities, Repayments of Principal after Year Five 189    
Capital Leases, Future Minimum Payments Due Thereafter 1    
Operating Leases, Future Minimum Payments, Due Thereafter 5    
Capital Leases, Future Minimum Payments Due 13    
Operating Leases, Future Minimum Payments Due 68    
Amount representing interest (4)    
Present value of minimum payments 9    
Rental Expense under Operating Leases 32 $ 35 $ 36
Non-affiliated Debt [Member]      
Debt and Commitments Maturities [Line Items]      
Total minimum payments $ 3,530    
Australia Facility Due 2014 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Maturity Date Dec. 05, 2017    
Australia Facility Due 2017 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 4.10% 4.50%  
Brazilian Bank Loans [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 11.20% 10.90%  
Other [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 5.10% 4.70%  
6.625% First Priority Senior Notes Due 2020 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 6.625% 6.625%  
Debt Instrument, Maturity Date Apr. 15, 2020    
10.00% First Priority Senior Notes Due 2020 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 10.00% 10.00%  
Debt Instrument, Maturity Date Apr. 15, 2020    
8.875% Senior Secured Notes Due 2018 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Unamortized Discount $ 1 $ 2  
Debt Instrument, Interest Rate, Stated Percentage 8.875% 8.875%  
Debt Instrument, Maturity Date Feb. 01, 2018    
9.00% Second-Priority Senior Secured Notes Due 2020 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 9.00% 9.00%  
Debt Instrument, Maturity Date Nov. 15, 2020    
9.2% Debentures Due 2021 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 9.20% 9.20%  
Debt Instrument, Maturity Date Mar. 15, 2021    
7.875% Debentures Due 2023 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 7.875% 7.875%  
Debt Instrument, Maturity Date Feb. 15, 2023    
8.375% Sinking Fund Debentures Due 2016 [Member]      
Debt and Commitments Maturities [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 8.375% 8.375%