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Debt and Credit Facilities (Details) - USD ($)
1 Months Ended 6 Months Ended 13 Months Ended
Feb. 28, 2022
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]            
Commercial paper   $ 0        
Other   3,000,000   $ 7,000,000    
Total debt   12,947,000,000   13,048,000,000    
Less current maturities   1,798,000,000   1,191,000,000    
Less current maturities   11,149,000,000   11,857,000,000    
Unamortized debt issuance costs   47,000,000   52,000,000    
Borrowing capacity on existing facilities   2,160,000,000   2,162,000,000    
Fair value of senior unsecured notes   11,082,000,000   10,910,000,000    
Revolving Credit Facility            
Line of Credit Facility [Line Items]            
Borrowings outstanding under credit facility   $ 0        
Senior Unsecured Notes 1.125% Due 2023            
Line of Credit Facility [Line Items]            
Stated interest rate   1.125%        
Unsecured debt   $ 598,000,000   585,000,000    
Senior Unsecured Notes, 0.600% Due 2023            
Line of Credit Facility [Line Items]            
Stated interest rate   0.60%        
Unsecured debt   $ 600,000,000   599,000,000    
Senior Unsecured Notes 3.375% due 2024            
Line of Credit Facility [Line Items]            
Stated interest rate   3.375%        
Unsecured debt   $ 597,000,000   596,000,000    
Senior Unsecured Notes, 0.250% Due 2024            
Line of Credit Facility [Line Items]            
Stated interest rate   0.25%        
Unsecured debt   $ 922,000,000   903,000,000    
Senior Unsecured Notes, 1.150% Due 2025            
Line of Credit Facility [Line Items]            
Stated interest rate   1.15%        
Unsecured debt   $ 647,000,000   647,000,000    
Senior Unsecured Notes 3.375% due 2025            
Line of Credit Facility [Line Items]            
Stated interest rate   3.375%        
Unsecured debt   $ 749,000,000   748,000,000    
Senior Unsecured Notes 3.500% due 2026            
Line of Credit Facility [Line Items]            
Stated interest rate   3.50%        
Unsecured debt   $ 996,000,000   995,000,000    
Senior Unsecured Notes 2.125% due 2027            
Line of Credit Facility [Line Items]            
Stated interest rate   2.125%        
Unsecured debt   $ 812,000,000   795,000,000    
Senior Unsecured Notes 3.650% due 2028            
Line of Credit Facility [Line Items]            
Stated interest rate   3.65%        
Unsecured debt   $ 597,000,000   597,000,000    
Senior Unsecured Notes 0.750% due 2029            
Line of Credit Facility [Line Items]            
Stated interest rate   0.75%        
Unsecured debt   $ 865,000,000   848,000,000    
Senior Unsecured Notes, 1.950% Due 2030            
Line of Credit Facility [Line Items]            
Stated interest rate   1.95%        
Unsecured debt   $ 992,000,000   991,000,000    
Senior Unsecured Notes 2.625% due 2030            
Line of Credit Facility [Line Items]            
Stated interest rate   2.625%        
Unsecured debt   $ 699,000,000   684,000,000    
Senior Unsecured Notes, 1.000% Due 2031            
Line of Credit Facility [Line Items]            
Stated interest rate   1.00%        
Unsecured debt   $ 807,000,000   790,000,000    
Senior Unsecured Notes 4.100% due 2043            
Line of Credit Facility [Line Items]            
Stated interest rate   4.10%        
Unsecured debt   $ 392,000,000   392,000,000    
Senior Unsecured Notes 4.375% due 2044            
Line of Credit Facility [Line Items]            
Stated interest rate   4.375%        
Unsecured debt   $ 396,000,000   396,000,000    
Senior Unsecured Notes 4.625% due 2046            
Line of Credit Facility [Line Items]            
Stated interest rate   4.625%        
Unsecured debt   $ 983,000,000   983,000,000    
Senior Unsecured Notes, 2.900% due 2050            
Line of Credit Facility [Line Items]            
Stated interest rate   2.90%        
Unsecured debt   $ 642,000,000   642,000,000    
Term Loan            
Line of Credit Facility [Line Items]            
Debt instrument, face amount $ 1,500,000,000          
Repayments of debt     $ 850,000,000      
Long-term debt   $ 650,000,000   $ 850,000,000    
Term Loan | SOFR            
Line of Credit Facility [Line Items]            
Basis spread on variable rate (as a percent) 0.725%          
Commercial Paper            
Line of Credit Facility [Line Items]            
Line of credit facility, maximum borrowing capacity         $ 2,250,000,000 $ 1,500,000,000
Debt instrument, maturity   397 days