v3.24.2.u1
Long-Term Debt and Revolving Credit Arrangements - Narrative (Details)
1 Months Ended 6 Months Ended
Mar. 03, 2023
USD ($)
Nov. 30, 2023
USD ($)
day
$ / shares
Rate
Dec. 31, 2020
USD ($)
day
$ / shares
Rate
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Nov. 20, 2023
$ / shares
Jul. 28, 2023
USD ($)
Mar. 14, 2023
USD ($)
Feb. 28, 2023
USD ($)
Apr. 04, 2022
USD ($)
Apr. 03, 2022
USD ($)
Debt Instrument [Line Items]                        
Issuance of term loans and notes, net of issuance costs       $ 0 $ 1,121,000,000              
Share price (in dollars per share) | $ / shares             $ 54.75          
Revolving Credit Facility | Freight Holding                        
Debt Instrument [Line Items]                        
Line of credit balance       0                
Revolving Credit Facility | Freight Holding | Freight Holding                        
Debt Instrument [Line Items]                        
Borrowing capacity                   $ 300,000,000    
Line of Credit | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Borrowing capacity               $ 2,500,000,000     $ 2,200,000,000 $ 2,300,000,000
Prior minimum liquidity covenant                     $ 1,000,000,000.0 $ 1,500,000,000
Aggregate principal amount               $ 250,000,000        
Line of credit balance       0                
Line of Credit | Letters of Credit                        
Debt Instrument [Line Items]                        
Letters of credit outstanding       1,200,000,000   $ 975,000,000            
Letters of credit outstanding that will reduce the available credit under facilities       384,000,000   $ 287,000,000            
2030 Refinanced Term Loans | Secured Loans                        
Debt Instrument [Line Items]                        
Aggregate principal amount $ 1,750,000,000                      
Payments of term loan   $ 500,000,000                    
Issuance of term loans and notes, net of issuance costs         1,100,000,000              
2030 Refinanced Term Loans | Secured Loans | Level 2                        
Debt Instrument [Line Items]                        
Fair value of long-term debt       2,000,000,000.0                
2025 Refinanced Term Loan | Secured Loans | Level 2                        
Debt Instrument [Line Items]                        
Fair value of long-term debt 1,400,000,000                      
2027 Refinanced Term Loan | Secured Loans                        
Debt Instrument [Line Items]                        
Aggregate principal amount                 $ 761,000,000      
2027 Refinanced Term Loan | Secured Loans | Level 2                        
Debt Instrument [Line Items]                        
Fair value of long-term debt $ 317,000,000                      
Refinanced Term Loans | Secured Loans                        
Debt Instrument [Line Items]                        
Basis spread on variable rate (in percent) 2.75%                      
Refinanced Term Loans | Secured Loans | Minimum                        
Debt Instrument [Line Items]                        
Basis spread on variable rate (in percent) 0.00%                      
2025 And 2027 Refinanced Term Loan | Secured Loans                        
Debt Instrument [Line Items]                        
Principal repayment on term loan and notes         $ 1,100,000,000              
2025 Convertible Notes | Convertible Notes                        
Debt Instrument [Line Items]                        
Aggregate principal amount     $ 1,150,000,000                  
Stated interest rate     0.00%                  
Additional principal amount     $ 150,000,000                  
Conversion ratio | Rate     1.23701%                  
Conversion price (in dollars per share) | $ / shares     $ 80.84                  
Redemption price (in percent)     100.00%                  
2025 Convertible Notes | Convertible Notes | Debt Conversion Terms One                        
Debt Instrument [Line Items]                        
Threshold trading days | day     20                  
Threshold consecutive trading days | day     30                  
Threshold percentage of stock price trigger     130.00%                  
2025 Convertible Notes | Convertible Notes | Debt Conversion Terms Two                        
Debt Instrument [Line Items]                        
Threshold trading days | day     5                  
Threshold consecutive trading days | day     10                  
Percentage of product of last reported sale price     98.00%                  
2025 Convertible Notes | Convertible Notes | Level 2                        
Debt Instrument [Line Items]                        
Fair value of long-term debt       1,200,000,000                
2028 Convertible Note | Convertible Notes                        
Debt Instrument [Line Items]                        
Aggregate principal amount   $ 1,730,000,000                    
Stated interest rate   0.875%                    
Additional principal amount   $ 225,000,000                    
Conversion ratio | Rate   1.37848%                    
Conversion price (in dollars per share) | $ / shares   $ 72.54                    
Redemption price (in percent)   100.00%                    
Net proceeds from offering   $ 1,700,000,000                    
Capped calls cost   $ 141,000,000                    
Initial cap price (in dollars per share) | $ / shares   $ 95.81                    
Premium percentage   75.00%                    
2028 Convertible Note | Convertible Notes | Debt Conversion Terms One                        
Debt Instrument [Line Items]                        
Threshold trading days | day   20                    
Threshold consecutive trading days | day   30                    
Threshold percentage of stock price trigger   130.00%                    
2028 Convertible Note | Convertible Notes | Debt Conversion Terms Two                        
Debt Instrument [Line Items]                        
Threshold trading days | day   5                    
Threshold consecutive trading days | day   10                    
Percentage of product of last reported sale price   98.00%                    
2028 Convertible Note | Convertible Notes | Level 2                        
Debt Instrument [Line Items]                        
Fair value of long-term debt       $ 2,100,000,000