Long-Term Debt and Short-Term Borrowings - Short-Term Borrowings and Current Portion of Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Short-Term Borrowings and Current Portion of Long-Term Debt
Effective Interest Rate
Current portion of long-term debt	$ 1,152	$ 1,938
Total short-term borrowings and current portion of long-term debt	$ 2,947	1,938
Current portion of long-term debt
Short-Term Borrowings and Current Portion of Long-Term Debt
Effective Interest Rate	3.94%
Current portion of long-term debt	$ 1,152	1,938
U.S. dollar commercial paper
Short-Term Borrowings and Current Portion of Long-Term Debt
Effective Interest Rate	5.65%
Short-term borrowings	$ 1,795	$ 0