Short-term borrowings (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Short-term borrowings:
Short-term borrowings	$ 5,514	$ 4,393
Notes payable to banks
Short-term borrowings:
Weighted-average interest rates on short-term borrowings (as a percent)	10.10%	10.80%
Commercial paper
Short-term borrowings:
Weighted-average interest rates on short-term borrowings (as a percent)	3.80%	4.50%
Demand notes
Short-term borrowings:
Weighted-average interest rates on short-term borrowings (as a percent)	0.00%	4.20%
Machinery, Power & Energy
Short-term borrowings:
Short-term borrowings	$ 0	$ 0
Machinery, Power & Energy \| Notes payable to banks
Short-term borrowings:
Short-term borrowings	0	0
Financial Products
Short-term borrowings:
Short-term borrowings	5,514	4,393
Financial Products \| Notes payable to banks
Short-term borrowings:
Short-term borrowings	106	165
Financial Products \| Commercial paper
Short-term borrowings:
Short-term borrowings	5,408	3,946
Financial Products \| Demand notes
Short-term borrowings:
Short-term borrowings	$ 0	$ 282