v3.5.0.2
Debt (First Lien Term Loans) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
May 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]            
Long-term Debt $ 11,682   $ 11,682     $ 11,292
Gain (Loss) on Extinguishment of Debt (15) $ (13) (15) $ (32)    
First Lien Term Loan 2019 [Member]            
Debt Instrument [Line Items]            
Long-term Debt 0   0     795
2020 First Lien Term Loan [Member]            
Debt Instrument [Line Items]            
Long-term Debt 0   0     378
2022 First Lien Term Loan [Member]            
Debt Instrument [Line Items]            
Long-term Debt 1,565   1,565     1,571
2023 First Lien Term Loan [Member]            
Debt Instrument [Line Items]            
Long-term Debt 531   531     533
New 2023 First Lien Term Loan [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Face Amount         $ 562  
Long-term Debt $ 546   $ 546     0
Debt Instrument Unamortized Discount Percent 1.00%   1.00%      
Debt Issuance Costs, Net         $ 11  
First Lien Term Loans [Member]            
Debt Instrument [Line Items]            
Long-term Debt $ 2,642   $ 2,642     $ 3,277
2019 and 2020 First Lien Term Loans [Member]            
Debt Instrument [Line Items]            
Gain (Loss) on Extinguishment of Debt $ 15          
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%          
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%          
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%          
London Interbank Offered Rate (LIBOR) [Member] | New 2023 First Lien Term Loan [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Basis Spread on Variable Rate 3.00%          
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%