Cat Financial Financing Activities - Financing Receivable Credit Quality Indicator (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Receivables [Abstract]
Period after which Unpaid Installments are Considered as Past Due	30 days
Financing Receivable, Credit Quality Indicator
Total Finance Receivables	$ 23,341		$ 22,207
Customer
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	2,419	$ 9,451
2024 and 2023, respectively	8,849	5,892
2023 and 2022, respectively	5,391	3,164
2022 and 2021, respectively	2,761	1,721
2021 and 2020, respectively	1,407	510
Prior	543	202
Revolving Finance Receivables	594	577
Total Finance Receivables	21,964	21,517	$ 20,413
Customer \| Current
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	2,415	9,366
2024 and 2023, respectively	8,728	5,742
2023 and 2022, respectively	5,238	3,058
2022 and 2021, respectively	2,656	1,661
2021 and 2020, respectively	1,355	489
Prior	515	189
Revolving Finance Receivables	589	572
Total Finance Receivables	21,496	21,077
Customer \| 31-60 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	4	45
2024 and 2023, respectively	65	65
2023 and 2022, respectively	58	43
2022 and 2021, respectively	43	24
2021 and 2020, respectively	21	6
Prior	9	3
Revolving Finance Receivables	3	3
Total Finance Receivables	203	189
Customer \| 61-90 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	14
2024 and 2023, respectively	28	22
2023 and 2022, respectively	25	14
2022 and 2021, respectively	16	8
2021 and 2020, respectively	7	3
Prior	2	1
Revolving Finance Receivables	1	1
Total Finance Receivables	79	63
Customer \| 91+ days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	26
2024 and 2023, respectively	28	63
2023 and 2022, respectively	70	49
2022 and 2021, respectively	46	28
2021 and 2020, respectively	24	12
Prior	17	9
Revolving Finance Receivables	1	1
Total Finance Receivables	186	188
Customer \| North America \| Current
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	1,359	5,340
2024 and 2023, respectively	4,932	3,035
2023 and 2022, respectively	2,741	1,567
2022 and 2021, respectively	1,347	980
2021 and 2020, respectively	787	244
Prior	181	23
Revolving Finance Receivables	394	385
Total Finance Receivables	11,741	11,574
Customer \| North America \| 31-60 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	4	30
2024 and 2023, respectively	37	42
2023 and 2022, respectively	38	29
2022 and 2021, respectively	29	18
2021 and 2020, respectively	14	5
Prior	4	1
Revolving Finance Receivables	3	3
Total Finance Receivables	129	128
Customer \| North America \| 61-90 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	9
2024 and 2023, respectively	18	14
2023 and 2022, respectively	14	10
2022 and 2021, respectively	6	6
2021 and 2020, respectively	5	2
Prior	2	1
Revolving Finance Receivables	1	1
Total Finance Receivables	46	43
Customer \| North America \| 91+ days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	13
2024 and 2023, respectively	14	37
2023 and 2022, respectively	41	26
2022 and 2021, respectively	26	16
2021 and 2020, respectively	14	6
Prior	7	2
Revolving Finance Receivables	1	1
Total Finance Receivables	103	101
Customer \| EAME \| Current
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	323	1,235
2024 and 2023, respectively	1,188	874
2023 and 2022, respectively	817	532
2022 and 2021, respectively	479	285
2021 and 2020, respectively	246	92
Prior	128	72
Revolving Finance Receivables	0	0
Total Finance Receivables	3,181	3,090
Customer \| EAME \| 31-60 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	7
2024 and 2023, respectively	8	10
2023 and 2022, respectively	8	4
2022 and 2021, respectively	7	3
2021 and 2020, respectively	4	1
Prior	1	0
Revolving Finance Receivables	0	0
Total Finance Receivables	28	25
Customer \| EAME \| 61-90 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	3
2024 and 2023, respectively	6	4
2023 and 2022, respectively	8	1
2022 and 2021, respectively	5	1
2021 and 2020, respectively	1	1
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	20	10
Customer \| EAME \| 91+ days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	3
2024 and 2023, respectively	4	14
2023 and 2022, respectively	14	8
2022 and 2021, respectively	6	6
2021 and 2020, respectively	6	4
Prior	4	1
Revolving Finance Receivables	0	0
Total Finance Receivables	34	36
Customer \| Asia/ Pacific \| Current
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	258	898
2024 and 2023, respectively	802	531
2023 and 2022, respectively	464	256
2022 and 2021, respectively	205	87
2021 and 2020, respectively	65	14
Prior	11	2
Revolving Finance Receivables	1	0
Total Finance Receivables	1,806	1,788
Customer \| Asia/ Pacific \| 31-60 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	4
2024 and 2023, respectively	8	6
2023 and 2022, respectively	5	5
2022 and 2021, respectively	3	2
2021 and 2020, respectively	2	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	18	17
Customer \| Asia/ Pacific \| 61-90 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	1
2024 and 2023, respectively	1	1
2023 and 2022, respectively	1	2
2022 and 2021, respectively	3	1
2021 and 2020, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	5	5
Customer \| Asia/ Pacific \| 91+ days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	4
2024 and 2023, respectively	2	1
2023 and 2022, respectively	2	2
2022 and 2021, respectively	2	1
2021 and 2020, respectively	1	1
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	7	9
Customer \| Latin America \| Current
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	260	800
2024 and 2023, respectively	738	363
2023 and 2022, respectively	332	220
2022 and 2021, respectively	190	60
2021 and 2020, respectively	46	8
Prior	7	2
Revolving Finance Receivables	0	0
Total Finance Receivables	1,573	1,453
Customer \| Latin America \| 31-60 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	4
2024 and 2023, respectively	10	6
2023 and 2022, respectively	7	5
2022 and 2021, respectively	4	1
2021 and 2020, respectively	1	0
Prior	2	2
Revolving Finance Receivables	0	0
Total Finance Receivables	24	18
Customer \| Latin America \| 61-90 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	1
2024 and 2023, respectively	3	2
2023 and 2022, respectively	2	1
2022 and 2021, respectively	2	0
2021 and 2020, respectively	1	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	8	4
Customer \| Latin America \| 91+ days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	2
2024 and 2023, respectively	4	6
2023 and 2022, respectively	6	8
2022 and 2021, respectively	7	4
2021 and 2020, respectively	3	1
Prior	1	1
Revolving Finance Receivables	0	0
Total Finance Receivables	21	22
Customer \| Mining \| Current
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	184	924
2024 and 2023, respectively	861	755
2023 and 2022, respectively	699	444
2022 and 2021, respectively	396	206
2021 and 2020, respectively	174	67
Prior	80	34
Revolving Finance Receivables	23	21
Total Finance Receivables	2,417	2,451
Customer \| Mining \| 31-60 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	0
2024 and 2023, respectively	2	1
2023 and 2022, respectively	0	0
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	0
Prior	2	0
Revolving Finance Receivables	0	0
Total Finance Receivables	4	1
Customer \| Mining \| 61-90 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	0
2024 and 2023, respectively	0	1
2023 and 2022, respectively	0	0
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	0	1
Customer \| Mining \| 91+ days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	4
2024 and 2023, respectively	4	5
2023 and 2022, respectively	7	5
2022 and 2021, respectively	5	1
2021 and 2020, respectively	0	0
Prior	4	3
Revolving Finance Receivables	0	0
Total Finance Receivables	20	18
Customer \| Power \| Current
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	31	169
2024 and 2023, respectively	207	184
2023 and 2022, respectively	185	39
2022 and 2021, respectively	39	43
2021 and 2020, respectively	37	64
Prior	108	56
Revolving Finance Receivables	171	166
Total Finance Receivables	778	721
Customer \| Power \| 31-60 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	0
2024 and 2023, respectively	0	0
2023 and 2022, respectively	0	0
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	0	0
Customer \| Power \| 61-90 days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	0
2024 and 2023, respectively	0	0
2023 and 2022, respectively	0	0
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	0	0
Customer \| Power \| 91+ days past due
Financing Receivable, Credit Quality Indicator
2025 and 2024, respectively	0	0
2024 and 2023, respectively	0	0
2023 and 2022, respectively	0	0
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	0
Prior	1	2
Revolving Finance Receivables	0	0
Total Finance Receivables	$ 1	$ 2

Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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Threshold period for when financing receivable is considered past due, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes threshold period past due to write off as uncollectible.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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