v3.26.1
Financial Instruments and Fair Value Measures - Bases Used To Measure The Approximate Fair Values Of Financial Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Liabilities    
Carrying amount of investments in equity securities that do not have readily determinable fair values $ 163 $ 159
Level 1    
Liabilities    
Current portion of long-term debt (a) 8,231 5,965
Long-term debt (a) 58,188 53,381
Total liabilities 66,419 59,346
Book value    
Liabilities    
Short-term borrowings   2,499
Current portion of long-term debt (a) 8,265 6,016
Long-term debt (a) 64,289 58,650
Total liabilities 72,554 67,165
Fair value    
Liabilities    
Short-term borrowings   2,497
Current portion of long-term debt (a) 8,252 5,985
Long-term debt (a) 60,615 55,822
Total liabilities 68,867 64,304
Fair value | Level 1    
Liabilities    
Short-term borrowings   0
Fair value | Level 2    
Liabilities    
Short-term borrowings   2,497
Current portion of long-term debt (a) 21 20
Long-term debt (a) 2,427 2,441
Total liabilities 2,448 4,958
Fair value | Level 3    
Liabilities    
Short-term borrowings   0
Current portion of long-term debt (a) 0 0
Long-term debt (a) 0 0
Total liabilities $ 0 $ 0