v3.22.0.1
Long-Term Debt and Revolving Credit Arrangements - Narrative (Details)
1 Months Ended
Aug. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
day
$ / shares
Rate
Sep. 30, 2020
USD ($)
May 31, 2020
USD ($)
Sep. 30, 2019
USD ($)
Oct. 31, 2018
USD ($)
Apr. 30, 2018
Jul. 31, 2016
Dec. 31, 2021
USD ($)
Feb. 25, 2021
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]                        
Additional paid-in capital   $ 12,967,000,000             $ 15,145,000,000   $ 14,872,000,000 $ (7,385,000,000)
Cumulative Effect, Period of Adoption, Adjustment                        
Debt Instrument [Line Items]                        
Additional paid-in capital   (243,000,000)                   $ 9,000,000
Senior Note                        
Debt Instrument [Line Items]                        
Aggregate principal amount           $ 2,000,000,000            
Senior Note | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 6,029,000,000      
Line of Credit | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Borrowing capacity                 2,300,000,000      
Line of credit balance                 0      
Line of Credit | Letters of Credit                        
Debt Instrument [Line Items]                        
Letters of credit outstanding   649,000,000             749,000,000      
Letters of credit outstanding that will reduce the available credit under facilities   233,000,000             247,000,000      
Refinanced Term Loans | Secured Loans                        
Debt Instrument [Line Items]                        
Aggregate principal amount                   $ 2,600,000,000    
2027 Refinanced Term Loan | Secured Loans                        
Debt Instrument [Line Items]                        
Aggregate principal amount                   1,100,000,000    
2027 Refinanced Term Loan | Secured Loans | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 1,100,000,000      
2025 Refinanced Term Loan | Secured Loans                        
Debt Instrument [Line Items]                        
Aggregate principal amount                   $ 1,500,000,000    
2025 Refinanced Term Loan | Secured Loans | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 1,400,000,000      
2025 Convertible Note | Convertible Notes                        
Debt Instrument [Line Items]                        
Aggregate principal amount   $ 1,150,000,000                    
Stated interest rate   0.00%                    
Excise of option to purchase additional principal amount of convertible note   $ 150,000,000                    
Conversion ratio | Rate   1.23701%                    
Conversion price (in dollars per share) | $ / shares   $ 80.84                    
Redemption price, percentage   1.00%                    
Interest costs capitalized   $ 243,000,000                    
2025 Convertible Note | Convertible Notes | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 1,100,000,000      
2025 Convertible Note | Convertible Notes | Debt Conversion Terms, One                        
Debt Instrument [Line Items]                        
Threshold number of trading days | day   20                    
Threshold number of consecutive trading days | day   30                    
Threshold percentage of stock price trigger   1.30%                    
2025 Convertible Note | Convertible Notes | Debt Conversion Terms, Two                        
Debt Instrument [Line Items]                        
Threshold number of trading days | day   5                    
Threshold number of consecutive trading days | day   10                    
Threshold percentage of stock price trigger   0.98%                    
2016 Senior Secured Term Loan | Secured Loans                        
Debt Instrument [Line Items]                        
Quarterly principal payments (as percent)               0.25%        
2018 Senior Secured Term Loan | Secured Loans                        
Debt Instrument [Line Items]                        
Quarterly principal payments (as percent)             0.25%          
2023 Senior Note | Senior Note                        
Debt Instrument [Line Items]                        
Aggregate principal amount           $ 500,000,000            
Stated interest rate           7.50%            
Debt instrument term           5 years            
Debt issuance costs           $ 9,000,000            
2026 Senior Note | Senior Note                        
Debt Instrument [Line Items]                        
Aggregate principal amount           $ 1,500,000,000            
Stated interest rate           8.00%            
Debt instrument term           8 years            
Debt issuance costs           $ 9,000,000            
2026 Senior Note | Senior Note | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 1,602,000,000      
2027 Senior Note | Senior Note                        
Debt Instrument [Line Items]                        
Aggregate principal amount         $ 1,200,000,000              
Stated interest rate         7.50%              
Debt instrument term         8 years              
Debt issuance costs, net         $ 11,000,000              
2027 Senior Note | Senior Note | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 1,305,000,000      
2025 Senior Note | Senior Note                        
Debt Instrument [Line Items]                        
Aggregate principal amount       $ 1,000,000,000                
Stated interest rate       7.50%                
Debt instrument term       5 years                
Debt issuance costs       $ 8,000,000                
2025 Senior Note | Senior Note | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 1,052,000,000      
2028 Senior Note | Senior Note                        
Debt Instrument [Line Items]                        
Aggregate principal amount     $ 500,000,000                  
Stated interest rate     6.25%                  
Debt instrument term     8 years                  
Debt issuance costs     $ 5,000,000                  
2028 Senior Note | Senior Note | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 537,000,000      
2029 Senior Note | Senior Note                        
Debt Instrument [Line Items]                        
Aggregate principal amount $ 1,500,000,000                      
Stated interest rate 4.50%                      
Debt instrument term 8 years                      
Debt issuance costs $ 16,000,000                      
2029 Senior Note | Senior Note | Level 2                        
Debt Instrument [Line Items]                        
Fair value                 $ 1,533,000,000