Finance Receivables (Details 4) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Financing Receivable, Credit Quality Indicator
Total Finance Receivables	$ 26,739	$ 27,514	$ 27,538
Customer
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	4,515	9,515
2021 and 2020, respectively	7,809	5,308
2020 and 2019, respectively	4,023	3,124
2019 and 2018, respectively	2,149	1,493
2018 and 2017, respectively	935	621
Prior	644	411
Revolving Finance Receivables	408	370
Total Finance Receivables	20,483	20,842	20,563
Customer | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	4,484	9,428
2021 and 2020, respectively	7,665	5,182
2020 and 2019, respectively	3,902	3,034
2019 and 2018, respectively	2,076	1,435
2018 and 2017, respectively	877	595
Prior	576	344
Revolving Finance Receivables	397	355
Total Finance Receivables	19,977	20,373
Customer | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	21	52
2021 and 2020, respectively	66	57
2020 and 2019, respectively	51	36
2019 and 2018, respectively	29	18
2018 and 2017, respectively	16	6
Prior	3	1
Revolving Finance Receivables	5	5
Total Finance Receivables	191	175
Customer | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	6	17
2021 and 2020, respectively	26	21
2020 and 2019, respectively	20	13
2019 and 2018, respectively	10	6
2018 and 2017, respectively	4	5
Prior	8	1
Revolving Finance Receivables	3	5
Total Finance Receivables	77	68
Customer | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	4	18
2021 and 2020, respectively	52	48
2020 and 2019, respectively	50	41
2019 and 2018, respectively	34	34
2018 and 2017, respectively	38	15
Prior	57	65
Revolving Finance Receivables	3	5
Total Finance Receivables	238	226
Customer | North America | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	2,316	4,792
2021 and 2020, respectively	3,996	2,596
2020 and 2019, respectively	2,021	1,426
2019 and 2018, respectively	991	630
2018 and 2017, respectively	382	182
Prior	103	32
Revolving Finance Receivables	218	182
Total Finance Receivables	10,027	9,840
Customer | North America | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	13	27
2021 and 2020, respectively	31	32
2020 and 2019, respectively	23	20
2019 and 2018, respectively	14	12
2018 and 2017, respectively	6	4
Prior	2	1
Revolving Finance Receivables	5	5
Total Finance Receivables	94	101
Customer | North America | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	4	7
2021 and 2020, respectively	10	8
2020 and 2019, respectively	6	5
2019 and 2018, respectively	4	3
2018 and 2017, respectively	2	1
Prior	2	1
Revolving Finance Receivables	3	5
Total Finance Receivables	31	30
Customer | North America | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	2	9
2021 and 2020, respectively	17	17
2020 and 2019, respectively	13	12
2019 and 2018, respectively	9	13
2018 and 2017, respectively	10	5
Prior	5	4
Revolving Finance Receivables	3	5
Total Finance Receivables	59	65
Customer | EAME | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	642	1,499
2021 and 2020, respectively	1,204	836
2020 and 2019, respectively	624	577
2019 and 2018, respectively	397	352
2018 and 2017, respectively	232	140
Prior	104	26
Revolving Finance Receivables	0	0
Total Finance Receivables	3,203	3,430
Customer | EAME | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	4	5
2021 and 2020, respectively	11	4
2020 and 2019, respectively	9	3
2019 and 2018, respectively	5	1
2018 and 2017, respectively	0	1
Prior	1	0
Revolving Finance Receivables	0	0
Total Finance Receivables	30	14
Customer | EAME | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	1	3
2021 and 2020, respectively	8	3
2020 and 2019, respectively	5	3
2019 and 2018, respectively	1	1
2018 and 2017, respectively	1	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	16	10
Customer | EAME | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	1	3
2021 and 2020, respectively	19	11
2020 and 2019, respectively	15	2
2019 and 2018, respectively	6	2
2018 and 2017, respectively	2	0
Prior	1	2
Revolving Finance Receivables	0	0
Total Finance Receivables	44	20
Customer | Asia/Pacific | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	696	1,456
2021 and 2020, respectively	1,077	943
2020 and 2019, respectively	614	420
2019 and 2018, respectively	218	119
2018 and 2017, respectively	63	40
Prior	17	3
Revolving Finance Receivables	37	36
Total Finance Receivables	2,722	3,017
Customer | Asia/Pacific | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	3	10
2021 and 2020, respectively	16	14
2020 and 2019, respectively	14	10
2019 and 2018, respectively	7	2
2018 and 2017, respectively	1	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	41	36
Customer | Asia/Pacific | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	3
2021 and 2020, respectively	6	7
2020 and 2019, respectively	7	4
2019 and 2018, respectively	3	1
2018 and 2017, respectively	1	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	17	15
Customer | Asia/Pacific | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	1	2
2021 and 2020, respectively	3	10
2020 and 2019, respectively	6	10
2019 and 2018, respectively	6	3
2018 and 2017, respectively	1	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	17	25
Customer | Mining | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	391	944
2021 and 2020, respectively	776	356
2020 and 2019, respectively	278	332
2019 and 2018, respectively	262	194
2018 and 2017, respectively	135	36
Prior	156	161
Revolving Finance Receivables	31	36
Total Finance Receivables	2,029	2,059
Customer | Mining | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	6
2021 and 2020, respectively	0	0
2020 and 2019, respectively	0	0
2019 and 2018, respectively	1	0
2018 and 2017, respectively	4	0
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	5	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
Total Finance Receivables	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	1	8
2019 and 2018, respectively	6	9
2018 and 2017, respectively	11	3
Prior	4	1
Revolving Finance Receivables	0	0
Total Finance Receivables	22	22
Customer | Latin America | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	422	617
2021 and 2020, respectively	513	299
2020 and 2019, respectively	214	160
2019 and 2018, respectively	108	70
2018 and 2017, respectively	33	17
Prior	19	18
Revolving Finance Receivables	0	0
Total Finance Receivables	1,309	1,181
Customer | Latin America | 31-60 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	1	4
2021 and 2020, respectively	8	7
2020 and 2019, respectively	5	3
2019 and 2018, respectively	2	3
2018 and 2017, respectively	5	1
Prior	0	0
Revolving Finance Receivables	0	0
Total Finance Receivables	21	18
Customer | Latin America | 61-90 days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	1	3
2021 and 2020, respectively	2	3
2020 and 2019, respectively	2	1
2019 and 2018, respectively	2	1
2018 and 2017, respectively	0	0
Prior	1	0
Revolving Finance Receivables	0	0
Total Finance Receivables	8	8
Customer | Latin America | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	4
2021 and 2020, respectively	12	9
2020 and 2019, respectively	15	9
2019 and 2018, respectively	7	7
2018 and 2017, respectively	14	7
Prior	18	14
Revolving Finance Receivables	0	0
Total Finance Receivables	66	50
Customer | Caterpillar Power Finance | Current
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	17	120
2021 and 2020, respectively	99	152
2020 and 2019, respectively	151	119
2019 and 2018, respectively	100	70
2018 and 2017, respectively	32	180
Prior	177	104
Revolving Finance Receivables	111	101
Total Finance Receivables	687	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
Total Finance Receivables	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	5	0
Revolving Finance Receivables	0	0
Total Finance Receivables	5	0
Customer | Caterpillar Power Finance | 91+ days past due
Financing Receivable, Credit Quality Indicator
2022 and 2021, respectively	0	0
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	29	44
Revolving Finance Receivables	0	0
Total Finance Receivables	30	$ 44
Dealer
Financing Receivable, Credit Quality Indicator
Total Finance Receivables	2,277		$ 3,117
Dealer | Total past due
Financing Receivable, Credit Quality Indicator
Total Finance Receivables	$ 78