XML 104 R90.htm IDEA: XBRL DOCUMENT v3.10.0.1
Long-Term Debt (6.875% Senior Notes, Due 2022 Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Jun. 22, 2018
Jan. 27, 2014
Dec. 31, 2018
Debt Instrument [Line Items]      
Long-term debt outstanding     $ 13,596,000,000
Junior-Priority Secured Notes due 2024 [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 276,000,000    
Senior Notes [Member] | Senior Notes at 6.875, Due 2022 [Member]      
Debt Instrument [Line Items]      
Debt instrument, offering date     Jan. 27, 2014
Debt Instrument, Face Amount   $ 3,000,000,000  
Long-term debt outstanding 2,632,000,000    
Debt instrument stated interest rate   6.875%  
Extinguishment of debt amount $ 368,000,000    
Junior-Priority Secured Notes [Member] | Junior-Priority Secured Notes due 2024 [Member]      
Debt Instrument [Line Items]      
Debt instrument, offering date     Jun. 22, 2018
Debt instrument stated interest rate 8.175%    
Minimum period notice for redemption of debt 15 days    
Maximum period notice for redemption of debt 60 days    
Debt Instrument, Redemption, Period Two [Member] | Senior Notes [Member] | Senior Notes at 6.875, Due 2022 [Member]      
Debt Instrument [Line Items]      
Minimum period notice for redemption of debt   30 days  
Maximum period notice for redemption of debt   60 days