v3.25.4
Financial Instruments and Fair Value Measures - Bases Used to Measure The Approximate Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Liabilities    
Carrying amount of investments in equity securities that do not have readily determinable fair values $ 159 $ 169
Book value    
Liabilities    
Short-term borrowings 2,499  
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 6,016 6,797
Long-term debt and finance lease obligations, excluding fair value hedges 58,650 60,243
Total liabilities 67,165 67,040
Estimate of Fair Value Measurement    
Liabilities    
Short-term borrowings 2,497  
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 5,985 6,767
Long-term debt and finance lease obligations, excluding fair value hedges 55,822 55,836
Total liabilities 64,304 62,603
Estimate of Fair Value Measurement | Level 1    
Liabilities    
Short-term borrowings 0  
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 5,965 6,620
Long-term debt and finance lease obligations, excluding fair value hedges 53,381 53,441
Total liabilities 59,346 60,061
Estimate of Fair Value Measurement | Level 2    
Liabilities    
Short-term borrowings 2,497  
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 20 147
Long-term debt and finance lease obligations, excluding fair value hedges 2,441 2,395
Total liabilities 4,958 2,542
Estimate of Fair Value Measurement | 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 0 0
Total liabilities $ 0 $ 0