Plan Description (Details) - Rail	12 Months Ended
Dec. 31, 2025 USD ($) h loan	Dec. 31, 2024 USD ($)
EBP, Description of Plan [Line Items]
Transfers from (to) other plans	$ (17,486,000)
Catch -up contribution, minimum age	50 years
Contributions, percentage of eligible compensation	60.00%
Matching percentage	50.00%
Participant compensation matched, percentage	6.00%
Employer contributions receivable	$ 0	$ 61,000
Vesting period	3 years
Forfeited and available to pay administrative expenses	$ 0
General loan, borrowing term	5 years
Minimum borrowing amount	$ 1,000
Maximum borrowing amount	$ 50,000
Maximum borrowing, to total account, percentage	50.00%
Number of outstanding loans allowed \| loan	2
Caterpillar Inc.
EBP, Description of Plan [Line Items]
Subsidiary ownership percentage by parent	100.00%
EBP, Qualified Non-Elective Contributions
EBP, Description of Plan [Line Items]
Employer non-elective contribution rate	3.00%
Service period \| h	1,000
Employer contributions receivable	$ 69,000	$ 60,000
Maximum vesting age	65 years

EBP, Catch -up Contribution, Minimum Age

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- Definition

EBP, Employer Contribution, Annual Fixed Rate Contribution, Percentage

+ References

No definition available.

+ Details

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- Definition

EBP, Employer Contribution Maximum Vesting Age

+ References

No definition available.

+ Details

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- Definition

Minimum Vesting service period for company contribution and/ or investment earning to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions.

+ References

No definition available.

+ Details

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- Definition

EBP, Note Receivable From Participant, General Loan, Maximum Borrowing Term

+ References

No definition available.

+ Details

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- Definition

EBP, Note Receivable from Participant, Number Of Loans Allowed

+ References

No definition available.

+ Details

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- Definition

EBP, Requisite Service Hours

+ References

No definition available.

+ Details

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- Definition

Subsidiary, Ownership Percentage, Parent

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount of net asset available for benefit transferred to (from) employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from (to) external plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

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- Definition

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.

+ References

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- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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- Definition

Amount of contribution receivable from employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

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- Definition

Amount of decrease in forfeited nonvested account of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from administrative expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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- Definition

Amount of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

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- Definition

Percentage of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow to total participant account balance.

+ References

+ Details

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- Definition

Amount of minimum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

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- Definition

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.

+ References

+ Details

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