Quarterly report pursuant to Section 13 or 15(d)

Debt - Schedule of Long-term Debt Instruments (Details)

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Debt - Schedule of Long-term Debt Instruments (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 18, 2019
Feb. 14, 2019
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Jun. 11, 2020
Dec. 31, 2019
Feb. 01, 2019
Debt                    
Finance leases       $ 1,000,000   $ 1,000,000     $ 2,000,000  
Total debt       9,344,000,000   9,344,000,000     7,853,000,000  
Less: total current maturities       1,492,000,000   1,492,000,000     2,000,000  
Less: total deferred financing costs for Notes       11,000,000   11,000,000     9,000,000  
Total long-term debt       7,841,000,000   7,841,000,000     7,842,000,000  
Loss on extinguishment of debt       0 $ 0 0 $ 1,000,000      
Proceeds from sale of capped call security     $ 3,000,000     0 $ 3,000,000      
Senior Secured Revolving Credit Facility                    
Debt                    
Principal amount       0   0        
Carrying value       $ 0   $ 0     $ 0  
Credit facility, unused capacity, commitment fee percentage           0.25%        
Senior Notes | 1.75% Senior Notes Due 2020                    
Debt                    
Stated interest rate (as a percent)       1.75%   1.75%     1.75%  
Principal amount       $ 1,000,000   $ 1,000,000        
Carrying value       $ 1,000,000   1,000,000     $ 1,000,000  
Loss on extinguishment of debt           $ 1,000,000        
Senior Notes | 3.875% Senior Notes Due 2022                    
Debt                    
Stated interest rate (as a percent)       3.875%   3.875%        
Principal amount       $ 1,000,000,000   $ 1,000,000,000        
Carrying value       $ 996,000,000   $ 996,000,000     995,000,000  
Senior Notes | 4.625% Senior Notes Due 2023                    
Debt                    
Stated interest rate (as a percent)       4.625%   4.625%        
Principal amount       $ 500,000,000   $ 500,000,000        
Carrying value       $ 498,000,000   $ 498,000,000     $ 498,000,000  
Senior Notes | 1.75% Senior Notes Due 2023                    
Debt                    
Stated interest rate (as a percent)       1.75%   1.75%     1.75%  
Principal amount       $ 193,000,000   $ 193,000,000        
Carrying value       $ 166,000,000   $ 166,000,000     $ 163,000,000  
Senior Notes | 4.625% Senior Notes Due 2024                    
Debt                    
Stated interest rate (as a percent)       4.625%   4.625%        
Principal amount       $ 1,500,000,000   $ 1,500,000,000        
Carrying value       $ 1,486,000,000   $ 1,486,000,000     1,485,000,000  
Senior Notes | 5.375% Senior Notes Due 2025                    
Debt                    
Stated interest rate (as a percent)       5.375%   5.375%        
Principal amount       $ 1,000,000,000   $ 1,000,000,000        
Carrying value       $ 994,000,000   $ 994,000,000     993,000,000  
Senior Notes | 5.375% Senior Notes Due 2026                    
Debt                    
Stated interest rate (as a percent)       5.375%   5.375%        
Principal amount       $ 1,000,000,000   $ 1,000,000,000        
Carrying value       $ 993,000,000   $ 993,000,000     992,000,000  
Senior Notes | 5.00% Senior Notes Due 2027                    
Debt                    
Stated interest rate (as a percent)       5.00%   5.00%        
Principal amount       $ 1,500,000,000   $ 1,500,000,000        
Carrying value       $ 1,489,000,000   $ 1,489,000,000     1,488,000,000  
Senior Notes | 5.500% Senior Notes Due 2029                    
Debt                    
Stated interest rate (as a percent)       5.50%   5.50%        
Principal amount       $ 1,250,000,000   $ 1,250,000,000        
Carrying value       $ 1,237,000,000   $ 1,237,000,000     1,236,000,000  
Senior Notes | 4.125% Senior Notes Due 2030                    
Debt                    
Stated interest rate (as a percent)       4.125%   4.125%        
Principal amount       $ 1,500,000,000   $ 1,500,000,000        
Carrying value       1,483,000,000   1,483,000,000     $ 0  
Original issuance discount and deferred financing costs               $ 19,000,000    
Line of Credit | Senior Secured Revolving Credit Facility                    
Debt                    
Line of credit facility       $ 1,750,000,000   $ 1,750,000,000        
Pandora | Senior Notes | 1.75% Senior Notes Due 2020                    
Debt                    
Stated interest rate (as a percent)   1.75%   1.75%   1.75%        
Short-term debt                   $ 152,000,000
Debt instrument redemption price (as a percent of aggregate principal)   100.00%                
Pandora | Senior Notes | 1.75% Senior Notes Due 2023                    
Debt                    
Principal amount                   $ 193,000,000
Pandora | Senior Notes | 1.75% Senior Notes Due 2020                    
Debt                    
Extinguishment of debt $ 151,000,000                  
Pandora                    
Debt                    
Letters of credit outstanding       $ 1,000,000   $ 1,000,000