v3.6.0.2
Debt Senior Unsecured Notes (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2016
Mar. 31, 2015
Sep. 30, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]            
Long-term Debt $ 12,046,000,000     $ 12,046,000,000 $ 11,292,000,000  
Debt Issuance Costs, Net 154,000,000     154,000,000    
Gains (Losses) on Extinguishment of Debt       (25,000,000) (40,000,000) $ (346,000,000)
Senior Unsecured Notes 2023 [Member]            
Debt Instrument [Line Items]            
Long-term Debt $ 1,237,000,000     $ 1,237,000,000 $ 1,235,000,000  
Debt Instrument, Interest Rate, Effective Percentage [1] 5.50%     5.50% 5.60%  
Debt Instrument, Face Amount     $ 1,250,000,000      
Debt Instrument, Interest Rate, Stated Percentage     5.375%      
Senior Unsecured Notes 2024 [Member]            
Debt Instrument [Line Items]            
Long-term Debt $ 643,000,000     $ 643,000,000 $ 641,000,000  
Debt Instrument, Interest Rate, Effective Percentage [1] 5.60%     5.60% 5.70%  
Debt Instrument, Face Amount   $ 650,000,000        
Debt Instrument, Interest Rate, Stated Percentage   5.50%        
Debt Issuance Costs, Net   $ 9,000,000        
Senior Unsecured Notes 2025 [Member]            
Debt Instrument [Line Items]            
Long-term Debt $ 1,532,000,000     $ 1,532,000,000 $ 1,530,000,000  
Debt Instrument, Interest Rate, Effective Percentage [1] 5.90%     5.90% 6.00%  
Debt Instrument, Face Amount     $ 1,550,000,000      
Debt Instrument, Interest Rate, Stated Percentage     5.75%      
Unsecured Debt [Member]            
Debt Instrument [Line Items]            
Long-term Debt $ 3,412,000,000     $ 3,412,000,000 $ 3,406,000,000  
First Lien Notes 2023 [Member]            
Debt Instrument [Line Items]            
Long-term Debt [2],[3] $ 450,000,000     $ 450,000,000 $ 568,000,000  
Debt Instrument, Interest Rate, Effective Percentage [4] 8.10%     8.10% 8.10%  
Gains (Losses) on Extinguishment of Debt $ (5,000,000) (19,000,000)        
First Lien Notes 2023 [Member] | Early Redemption Amount [Member]            
Debt Instrument [Line Items]            
Long-term Debt   $ 147,000,000        
2019, 2020 and 2021 First Lien Notes [Member]            
Debt Instrument [Line Items]            
Gains (Losses) on Extinguishment of Debt     $ (340,000,000)      
2023 and 2025 Senior Unsecured Notes [Member]            
Debt Instrument [Line Items]            
Debt Issuance Costs, Net     $ 42,000,000      
[1] Our weighted average interest rate calculation includes the amortization of debt issuance costs.
[2] In December 2016, we used cash on hand to redeem 10% of the original aggregate principal amount of our 2023 First Lien Notes, plus accrued and unpaid interest. During the fourth quarter of 2016, we recorded approximately $5 million in debt extinguishment costs related to the partial repurchase of our 2023 First Lien Notes.
[3] On February 3, 2017, we issued a notice of redemption to repay the remaining $453 million of our outstanding 2023 First Lien Notes using cash on hand along with the proceeds from the New 2019 First Lien Term Loan which contains a substantially lower variable rate of LIBOR plus 1.75% per annum.
[4] Our weighted average interest rate calculation includes the amortization of debt issuance costs and debt discount.