Quarterly report pursuant to Section 13 or 15(d)

Assets And Liabilities Measured At Fair Value (Details)

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Assets And Liabilities Measured At Fair Value (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Oct. 17, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Realized and unrealized gains (losses) on financial instruments, net     $ 7,000,000 $ (200,000,000) $ (33,000,000) $ (188,000,000)  
Payments for (Proceeds from) Derivative Instrument, Investing Activities         1,000,000 88,000,000  
1.375% Cash Convertible Senior Notes due 2023              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Debt face amount             $ 1,000,000,000
1.375% Cash Convertible Senior Notes due 2023 | Level 2              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Debt face amount             $ 1,000,000,000
Fair Value Option Securities              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Realized and unrealized gains (losses) on financial instruments, net     14,000,000 (117,000,000) 43,000,000 (139,000,000)  
Exchangeable Senior Debentures              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Realized and unrealized gains (losses) on financial instruments, net     (23,000,000)   (23,000,000)    
Convertible Notes Payable              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Realized and unrealized gains (losses) on financial instruments, net     (53,000,000) (19,000,000) (52,000,000) 30,000,000  
1.375% Convertible Notes Bond Hedge Transaction              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Realized and unrealized gains (losses) on financial instruments, net     $ 69,000,000 (9,000,000) 1,000,000 (47,000,000)  
Other Financial Instruments              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Realized and unrealized gains (losses) on financial instruments, net       $ (55,000,000) $ (2,000,000) $ (32,000,000)  
Forward Contracts | Live Nation              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Maximum shares to be purchased   15,900,000          
Weighted average stock price shares purchased by counterparty 24.91            
Payments for (Proceeds from) Derivative Instrument, Investing Activities $ 396,000,000