Finance Receivables (Details 4) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator
Financing Receivable, before Allowance for Credit Loss	$ 26,787	$ 27,514
Customer
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	8,180	9,515
2021 and 2020, respectively	6,296	5,308
2020 and 2019, respectively	3,015	3,124
2019 and 2018, respectively	1,409	1,493
2018 and 2017, respectively	549	621
Prior	408	411
Revolving Finance Receivables	496	370
Financing Receivable, before Allowance for Credit Loss	20,353	20,842
Customer | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	8,086	9,428
2021 and 2020, respectively	6,148	5,182
2020 and 2019, respectively	2,918	3,034
2019 and 2018, respectively	1,370	1,435
2018 and 2017, respectively	536	595
Prior	396	344
Revolving Finance Receivables	485	355
Financing Receivable, before Allowance for Credit Loss	19,939	20,373
Customer | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	52	52
2021 and 2020, respectively	59	57
2020 and 2019, respectively	37	36
2019 and 2018, respectively	16	18
2018 and 2017, respectively	6	6
Prior	2	1
Revolving Finance Receivables	4	5
Financing Receivable, before Allowance for Credit Loss	176	175
Customer | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	21	17
2021 and 2020, respectively	29	21
2020 and 2019, respectively	15	13
2019 and 2018, respectively	7	6
2018 and 2017, respectively	1	5
Prior	0	1
Revolving Finance Receivables	3	5
Financing Receivable, before Allowance for Credit Loss	76	68
Customer | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	21	18
2021 and 2020, respectively	60	48
2020 and 2019, respectively	45	41
2019 and 2018, respectively	16	34
2018 and 2017, respectively	6	15
Prior	10	65
Revolving Finance Receivables	4	5
Financing Receivable, before Allowance for Credit Loss	162	226
Customer | North America | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	3,915	4,792
2021 and 2020, respectively	3,276	2,596
2020 and 2019, respectively	1,525	1,426
2019 and 2018, respectively	653	630
2018 and 2017, respectively	206	182
Prior	34	32
Revolving Finance Receivables	240	182
Financing Receivable, before Allowance for Credit Loss	9,849	9,840
Customer | North America | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	25	27
2021 and 2020, respectively	26	32
2020 and 2019, respectively	18	20
2019 and 2018, respectively	12	12
2018 and 2017, respectively	4	4
Prior	1	1
Revolving Finance Receivables	4	5
Financing Receivable, before Allowance for Credit Loss	90	101
Customer | North America | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	9	7
2021 and 2020, respectively	15	8
2020 and 2019, respectively	7	5
2019 and 2018, respectively	3	3
2018 and 2017, respectively	1	1
Prior	0	1
Revolving Finance Receivables	3	5
Financing Receivable, before Allowance for Credit Loss	38	30
Customer | North America | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	11	9
2021 and 2020, respectively	16	17
2020 and 2019, respectively	12	12
2019 and 2018, respectively	6	13
2018 and 2017, respectively	4	5
Prior	3	4
Revolving Finance Receivables	4	5
Financing Receivable, before Allowance for Credit Loss	56	65
Customer | EAME | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	1,270	1,499
2021 and 2020, respectively	953	836
2020 and 2019, respectively	477	577
2019 and 2018, respectively	280	352
2018 and 2017, respectively	155	140
Prior	68	26
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	3,203	3,430
Customer | EAME | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	10	5
2021 and 2020, respectively	12	4
2020 and 2019, respectively	7	3
2019 and 2018, respectively	1	1
2018 and 2017, respectively	1	1
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	31	14
Customer | EAME | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	8	3
2021 and 2020, respectively	4	3
2020 and 2019, respectively	3	3
2019 and 2018, respectively	1	1
2018 and 2017, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	16	10
Customer | EAME | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	6	3
2021 and 2020, respectively	25	11
2020 and 2019, respectively	16	2
2019 and 2018, respectively	4	2
2018 and 2017, respectively	1	0
Prior	1	2
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	53	20
Customer | Asia/Pacific | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	1,174	1,456
2021 and 2020, respectively	805	943
2020 and 2019, respectively	393	420
2019 and 2018, respectively	124	119
2018 and 2017, respectively	37	40
Prior	5	3
Revolving Finance Receivables	40	36
Financing Receivable, before Allowance for Credit Loss	2,578	3,017
Customer | Asia/Pacific | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	10	10
2021 and 2020, respectively	12	14
2020 and 2019, respectively	8	10
2019 and 2018, respectively	1	2
2018 and 2017, respectively	1	0
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	32	36
Customer | Asia/Pacific | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	2	3
2021 and 2020, respectively	5	7
2020 and 2019, respectively	4	4
2019 and 2018, respectively	2	1
2018 and 2017, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	13	15
Customer | Asia/Pacific | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	2	2
2021 and 2020, respectively	6	10
2020 and 2019, respectively	6	10
2019 and 2018, respectively	4	3
2018 and 2017, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	18	25
Customer | Mining | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	875	944
2021 and 2020, respectively	627	356
2020 and 2019, respectively	227	332
2019 and 2018, respectively	193	194
2018 and 2017, respectively	94	36
Prior	108	161
Revolving Finance Receivables	80	36
Financing Receivable, before Allowance for Credit Loss	2,204	2,059
Customer | Mining | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	6
2021 and 2020, respectively	1	0
2020 and 2019, respectively	0	0
2019 and 2018, respectively	0	0
2018 and 2017, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	1	6
Customer | Mining | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	1
2021 and 2020, respectively	0	0
2020 and 2019, respectively	0	0
2019 and 2018, respectively	0	0
2018 and 2017, respectively	0	4
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	0	5
Customer | Mining | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	1
2020 and 2019, respectively	0	8
2019 and 2018, respectively	0	9
2018 and 2017, respectively	0	3
Prior	1	1
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	1	22
Customer | Latin America | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	770	617
2021 and 2020, respectively	400	299
2020 and 2019, respectively	150	160
2019 and 2018, respectively	69	70
2018 and 2017, respectively	26	17
Prior	20	18
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	1,435	1,181
Customer | Latin America | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	7	4
2021 and 2020, respectively	8	7
2020 and 2019, respectively	4	3
2019 and 2018, respectively	2	3
2018 and 2017, respectively	0	1
Prior	1	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	22	18
Customer | Latin America | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	2	3
2021 and 2020, respectively	5	3
2020 and 2019, respectively	1	1
2019 and 2018, respectively	1	1
2018 and 2017, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	9	8
Customer | Latin America | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	2	4
2021 and 2020, respectively	13	9
2020 and 2019, respectively	11	9
2019 and 2018, respectively	2	7
2018 and 2017, respectively	1	7
Prior	0	14
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	29	50
Customer | Caterpillar Power Finance | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	82	120
2021 and 2020, respectively	87	152
2020 and 2019, respectively	146	119
2019 and 2018, respectively	51	70
2018 and 2017, respectively	18	180
Prior	161	104
Revolving Finance Receivables	125	101
Financing Receivable, before Allowance for Credit Loss	670	846
Customer | Caterpillar Power Finance | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	0
2020 and 2019, respectively	0	0
2019 and 2018, respectively	0	0
2018 and 2017, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Customer | Caterpillar Power Finance | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	0
2020 and 2019, respectively	0	0
2019 and 2018, respectively	0	0
2018 and 2017, respectively	0	0
Prior	0	0
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Customer | Caterpillar Power Finance | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	0
2021 and 2020, respectively	0	0
2020 and 2019, respectively	0	0
2019 and 2018, respectively	0	0
2018 and 2017, respectively	0	0
Prior	5	44
Revolving Finance Receivables	0	0
Financing Receivable, before Allowance for Credit Loss	5	44
Dealer
Financing Receivable, Credit Quality Indicator
Financing Receivable, before Allowance for Credit Loss	2,137	$ 2,210
Dealer | Total past due
Financing Receivable, Credit Quality Indicator
2018 and 2017, respectively	78
Prior	$ 62