v3.6.0.2
Debt Debt (First Lien Term Loans) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]                  
Long-term Debt   $ 12,046   $ 11,292     $ 12,046 $ 11,292  
Debt Issuance Costs, Net   154         154    
Gains (Losses) on Extinguishment of Debt             (25) (40) $ (346)
2017 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt   $ 537   $ 0     $ 537 $ 0  
Debt Instrument, Interest Rate, Effective Percentage [1]   5.00%   0.00%     5.00% 0.00%  
Debt Instrument, Face Amount   $ 550         $ 550    
Percentage of principal amount of Term Loan to be paid quarterly   0.25%              
Debt Instrument Unamortized Discount Percent   1.00%         1.00%    
Debt Issuance Costs, Net   $ 9         $ 9    
First Lien Term Loan 2019 [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt   $ 0   $ 795     $ 0 $ 795  
Debt Instrument, Interest Rate, Effective Percentage [1]   0.00%   4.60%     0.00% 4.60%  
2020 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt   $ 0   $ 378     $ 0 $ 378  
Debt Instrument, Interest Rate, Effective Percentage [1]   0.00%   4.40%     0.00% 4.40%  
2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt [2]   $ 528   $ 533     $ 528 $ 533  
Debt Instrument, Interest Rate, Effective Percentage [1]   4.70%   4.70%     4.70% 4.70%  
Debt Instrument, Face Amount       $ 550       $ 550  
Percentage of principal amount of Term Loan to be paid quarterly       0.25%          
Debt Instrument Unamortized Discount Percent       1.00%       1.00%  
Debt Issuance Costs, Net       $ 12       $ 12  
New 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt [2]   $ 543   $ 0     $ 543 $ 0  
Debt Instrument, Interest Rate, Effective Percentage [1]   4.30%   0.00%     4.30% 0.00%  
Debt Instrument, Face Amount     $ 562            
Debt Instrument Unamortized Discount Percent     1.00%            
Debt Issuance Costs, Net     $ 11            
2024 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt [2]   $ 1,557   $ 1,571     $ 1,557 $ 1,571  
Debt Instrument, Interest Rate, Effective Percentage [1]   3.80%   3.80%     3.80% 3.80%  
Debt Instrument, Face Amount         $ 1,600        
Percentage of principal amount of Term Loan to be paid quarterly         0.25%        
Debt Modification Costs         $ 13        
Debt Issuance Costs, Net         $ 6        
Loans Payable [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt   $ 3,165   $ 3,277     $ 3,165 $ 3,277  
2019 and 2020 First Lien Term Loans [Member]                  
Debt Instrument [Line Items]                  
Gains (Losses) on Extinguishment of Debt     $ (15)            
First Lien Notes 2023 [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt [3],[4]   $ 450   $ 568     $ 450 $ 568  
Debt Instrument, Interest Rate, Effective Percentage [5]   8.10%   8.10%     8.10% 8.10%  
Gains (Losses) on Extinguishment of Debt   $ (5)       $ (19)      
Federal Funds Effective Rate [Member] | 2017 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate   0.50%              
Federal Funds Effective Rate [Member] | 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate       0.50%          
Federal Funds Effective Rate [Member] | New 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     0.50%            
Federal Funds Effective Rate [Member] | 2024 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate         0.50%        
Eurodollar Rate For A One-Month Interest Period [Member] | 2017 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate   1.00%              
Eurodollar Rate For A One-Month Interest Period [Member] | 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate       1.00%          
Eurodollar Rate For A One-Month Interest Period [Member] | New 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     1.00%            
Eurodollar Rate For A One-Month Interest Period [Member] | 2024 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate         1.00%        
Prime Rate Or The Eurodollar Rate For a One Month Interest Period [Member] | 2017 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate   0.75%              
Prime Rate Or The Eurodollar Rate For a One Month Interest Period [Member] | 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate       2.00%          
Prime Rate Or The Eurodollar Rate For a One Month Interest Period [Member] | New 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     2.00%            
Prime Rate Or The Eurodollar Rate For a One Month Interest Period [Member] | 2024 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate         1.75%        
London Interbank Offered Rate (LIBOR) [Member] | 2023 and New 2023 First Lien Term Loans [Member]                  
Debt Instrument [Line Items]                  
Reduction in Basis Spread on Variable Rate   0.25%              
Debt Instrument, Basis Spread on Variable Rate   2.75%              
London Interbank Offered Rate (LIBOR) [Member] | 2017 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate   1.75%              
London Interbank Offered Rate (LIBOR) [Member] | 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate       2.75%          
London Interbank Offered Rate (LIBOR) [Member] | New 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     2.75%            
London Interbank Offered Rate (LIBOR) [Member] | 2024 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate         2.75%        
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | 2017 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage   0.00%         0.00%    
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage       0.00%       0.00%  
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | New 2023 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage       0.00%       0.00%  
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | 2024 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage         0.75%        
Granite Ridge Energy LLC [Member]                  
Debt Instrument [Line Items]                  
Proceeds from 2023 First Lien Term Loan utilize for Acquisition of Granite Ridge Energy LLC       $ 325       $ 325  
Subsequent Event [Member] | New 2019 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Face Amount $ 400                
Percentage of principal amount of Term Loan to be paid quarterly 0.25%                
Debt Instrument Unamortized Discount Percent 1.00%                
Debt Issuance Costs, Net $ 8                
Subsequent Event [Member] | First Lien Notes 2023 [Member]                  
Debt Instrument [Line Items]                  
Gains (Losses) on Extinguishment of Debt $ (21)                
Subsequent Event [Member] | Federal Funds Effective Rate [Member] | New 2019 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate 0.50%                
Subsequent Event [Member] | Eurodollar Rate For A One-Month Interest Period [Member] | New 2019 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate 1.00%                
Subsequent Event [Member] | Prime Rate Or The Eurodollar Rate For a One Month Interest Period [Member] | New 2019 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate 0.75%                
Subsequent Event [Member] | London Interbank Offered Rate (LIBOR) [Member] | New 2019 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate 1.75%                
Subsequent Event [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | New 2019 First Lien Term Loan [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage 0.00%                
[1] Our weighted average interest rate calculation includes the amortization of debt issuance costs and debt discount.
[2] On December 21, 2016, we repriced our 2023 First Lien Term Loans by lowering the margin over LIBOR by 0.25% to 2.75% and extended the maturity of our 2024 First Lien Term Loan From May 2022 to January 2024.
[3] 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.
[4] 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.
[5] Our weighted average interest rate calculation includes the amortization of debt issuance costs and debt discount.