Cat Financial Financing Activities - Financial receivable, modified (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Customer
Finance receivables
Financing receivable, modified, percentage	0.16%	0.15%
Financing receivable, modified in period, amount	$ 38	$ 33
Extended Maturity
Finance receivables
Financing receivable, weighted average term increase	19 months	8 months
Payment Deferral
Finance receivables
Financing receivable, weighted average term increase	6 months	6 months

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

+ References

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- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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