v3.25.1
Financial Instruments and Fair Value Measures - Bases Used To Measure The Approximate Fair Values Of Financial Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Liabilities    
Carrying amount of investments in equity securities that do not have readily determinable fair values $ 157 $ 169
Quoted prices in active markets for identical assets (Level 1)    
Liabilities    
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 3,748 6,620
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability 58,486 53,441
Total liabilities 62,234 60,061
Book value    
Liabilities    
Short-term borrowings 1,593 0
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 3,767 6,797
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability 64,350 60,243
Total liabilities 69,710 67,040
Approximate fair value    
Liabilities    
Short-term borrowings 1,593  
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 3,765 6,767
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability 60,904 55,836
Total liabilities 66,262 62,603
Approximate fair value | Quoted prices in active markets for identical assets (Level 1)    
Liabilities    
Short-term borrowings 0  
Approximate fair value | Significant other observable inputs (Level 2)    
Liabilities    
Short-term borrowings 1,593  
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 17 147
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability 2,418 2,395
Total liabilities 4,028 2,542
Approximate fair value | Significant unobservable inputs (Level 3)    
Liabilities    
Short-term borrowings 0  
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 0 0
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability 0 0
Total liabilities $ 0 $ 0