v3.24.0.1
Financial Instruments and Fair Value Measures - Bases Used to Measure The Approximate Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Liabilities    
Carrying amount of investments in equity securities that do not have readily determinable fair values $ 159 $ 129
Book value    
Liabilities    
Short-term borrowings   1
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 7,191 4,152
Long-term debt and finance lease obligations, excluding fair value hedges 52,460 59,463
Total liabilities 59,651 63,616
Estimate of Fair Value Measurement    
Liabilities    
Short-term borrowings   1
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 7,069 4,121
Long-term debt and finance lease obligations, excluding fair value hedges 49,541 54,073
Total liabilities 56,610 58,195
Estimate of Fair Value Measurement | Quoted prices in active markets for identical assets (Level 1)    
Liabilities    
Short-term borrowings   0
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 6,862 3,930
Long-term debt and finance lease obligations, excluding fair value hedges 48,983 53,365
Total liabilities 55,845 57,295
Estimate of Fair Value Measurement | Significant other observable inputs (Level 2)    
Liabilities    
Short-term borrowings   1
Current portion of long-term debt and finance lease obligations, excluding fair value hedges 207 191
Long-term debt and finance lease obligations, excluding fair value hedges 558 708
Total liabilities 765 900
Estimate of Fair Value Measurement | 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 0 0
Total liabilities $ 0 $ 0