v3.21.2
Long-Term Debt and Revolving Credit Arrangements - Narrative (Details)
1 Months Ended 3 Months Ended
Jan. 01, 2021
USD ($)
Dec. 31, 2020
USD ($)
segment
$ / shares
Rate
Mar. 31, 2021
USD ($)
Jun. 30, 2021
USD ($)
Feb. 25, 2021
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]                
Decrease to additional paid-in capital   $ 12,967,000,000 $ 13,598,000,000 $ 14,175,000,000   $ 10,239,000,000 $ 12,028,000,000 $ 14,872,000,000
Reclassification of the equity component of 2025 Convertible Notes to liability upon adoption of ASU 2020-06     (243,000,000)          
Additional Paid-In Capital                
Debt Instrument [Line Items]                
Decrease to additional paid-in capital   35,931,000,000 36,182,000,000 35,588,000,000   $ 31,267,000,000 $ 31,035,000,000 $ 30,739,000,000
Reclassification of the equity component of 2025 Convertible Notes to liability upon adoption of ASU 2020-06 $ (243,000,000)   $ (243,000,000)          
Secured Loans | Refinanced Term Loans                
Debt Instrument [Line Items]                
Aggregate principal amount         $ 2,600,000,000      
Secured Loans | 2027 Refinanced Term Loan                
Debt Instrument [Line Items]                
Aggregate principal amount         1,100,000,000      
Secured Loans | 2027 Refinanced Term Loan | Level 2                
Debt Instrument [Line Items]                
Fair Value of long-term debt       1,100,000,000        
Secured Loans | 2025 Refinanced Term Loan                
Debt Instrument [Line Items]                
Aggregate principal amount         $ 1,500,000,000      
Secured Loans | 2025 Refinanced Term Loan | Level 2                
Debt Instrument [Line Items]                
Fair Value of long-term debt       1,500,000,000        
Senior Note | Level 2                
Debt Instrument [Line Items]                
Fair Value of long-term debt       4,562,000,000        
Convertible Notes | 2025 Convertible Note                
Debt Instrument [Line Items]                
Aggregate principal amount   1,150,000,000            
Additional principal amount   $ 150,000,000            
Stated interest rate   0.00%            
Conversion price (in dollars per share) | $ / shares   $ 80.84            
Conversion ratio | Rate   1.23701%            
Redemption price (in percent)   1.00%            
Interest costs capitalized   $ 243,000,000            
Convertible Notes | 2025 Convertible Note | Debt Conversion Terms One                
Debt Instrument [Line Items]                
Threshold trading days | segment   20            
Threshold consecutive trading days | segment   30            
Threshold percentage of stock price trigger   1.30%            
Convertible Notes | 2025 Convertible Note | Debt Conversion Terms Two                
Debt Instrument [Line Items]                
Threshold trading days | segment   5            
Threshold consecutive trading days | segment   10            
Threshold percentage of stock price trigger   0.98%            
Convertible Notes | 2025 Convertible Note | Level 2                
Debt Instrument [Line Items]                
Fair Value of long-term debt       1,200,000,000        
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   682,000,000        
Letters of credit outstanding that will reduce the available credit under facilities   $ 233,000,000   $ 266,000,000