Long-term debt - Aggregate amounts of maturities of long-term debt (Details) $ in Millions	Dec. 31, 2023 USD ($)
Long-term Debt
2024	$ 8,763
2025	7,830
2026	5,649
2027	2,492
2028	213
Machinery, Energy & Transportation
Long-term Debt
2024	1,044
2025	19
2026	15
2027	13
2028	199
Financial Products
Long-term Debt
2024	7,719
2025	7,811
2026	5,634
2027	2,479
2028	$ 14