Fair value disclosures - Fair values of financial instruments (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Carrying Amount
Assets
Finance receivables-net (excluding finance leases)	$ 17,922	$ 16,180
Wholesale inventory receivables-net (excluding finance leases)	1,931	1,568
Carrying Amount \| Machinery, Power & Energy
Liabilities
Long-term debt (including amounts due within one year)	10,713	8,610
Carrying Amount \| Financial Products
Liabilities
Long-term debt (including amounts due within one year)	27,103	25,406
Carrying amount of assets excluded from measurement at fair value
Liabilities
Excluded items: Finance leases and failed sale leasebacks, Carrying Value	7,189	6,769
Level 3 \| Fair Value
Assets
Finance receivables-net (excluding finance leases)	17,648	15,788
Wholesale inventory receivables-net (excluding finance leases)	1,871	1,527
Level 2 \| Fair Value \| Machinery, Power & Energy
Liabilities
Long-term debt (including amounts due within one year)	10,363	7,980
Level 2 \| Fair Value \| Financial Products
Liabilities
Long-term debt (including amounts due within one year)	$ 27,204	$ 25,304

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Period Type:	instant