Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment Reporting Information
External Revenues	$ 690	$ 634	$ 2,010	$ 1,919
Profit before income taxes	188	131	580	516
Interest Expense	151	110	377	351
Depreciation on equipment leased to others	179	191	544	570
Provision for credit losses	(16)	59	34	60
Assets	31,483		31,483		$ 32,387
Capital expenditures	294	311	869	899
Operating Segments
Segment Reporting Information
External Revenues	683	634	1,998	1,915
Profit before income taxes	247	160	686	606
Interest Expense	168	116	418	363
Depreciation on equipment leased to others	179	191	544	570
Provision for credit losses	(16)	59	34	60
Assets	29,273		29,273		31,098
Capital expenditures	292	309	863	893
Unallocated
Segment Reporting Information
External Revenues	10	3	21	12
Profit before income taxes	(80)	(71)	(222)	(218)
Interest Expense	53	43	138	138
Depreciation on equipment leased to others	0	0	0	0
Provision for credit losses	0	0	0	0
Assets	1,762		1,762		1,458
Capital expenditures	2	2	6	6
Segment Reconciling Items | Timing
Segment Reporting Information
External Revenues	(3)	(3)	(9)	(8)
Profit before income taxes	0	2	3	5
Interest Expense	0	0	0	0
Depreciation on equipment leased to others	0	0	0	0
Provision for credit losses	0	0	0	0
Assets	18		18		15
Capital expenditures	0	0	0	0
Segment Reconciling Items | Methodology
Segment Reporting Information
External Revenues	0	0	0	0
Profit before income taxes	21	40	113	123
Interest Expense	(70)	(49)	(179)	(150)
Depreciation on equipment leased to others	0	0	0	0
Provision for credit losses	0	0	0	0
Assets	582		582		18
Capital expenditures	0	0	0	0
Inter-segment Eliminations
Segment Reporting Information
External Revenues	0	0	0	0
Profit before income taxes	0	0	0	0
Interest Expense	0	0	0	0
Depreciation on equipment leased to others	0	0	0	0
Provision for credit losses	0	0	0	0
Assets	(152)		(152)		(202)
Capital expenditures	0	0	0	0
North America | Operating Segments
Segment Reporting Information
External Revenues	383	349	1,112	1,044
Profit before income taxes	150	94	411	295
Interest Expense	69	62	181	195
Depreciation on equipment leased to others	126	138	381	409
Provision for credit losses	(5)	10	11	14
Assets	15,014		15,014		15,755
Capital expenditures	205	236	652	680
EAME | Operating Segments
Segment Reporting Information
External Revenues	72	69	207	204
Profit before income taxes	0	26	5	50
Interest Expense	27	6	45	16
Depreciation on equipment leased to others	13	15	41	45
Provision for credit losses	7	0	49	28
Assets	4,724		4,724		5,192
Capital expenditures	45	40	101	67
Asia/Pacific | Operating Segments
Segment Reporting Information
External Revenues	70	78	216	263
Profit before income taxes	33	33	104	133
Interest Expense	19	18	55	66
Depreciation on equipment leased to others	1	1	4	5
Provision for credit losses	1	7	5	7
Assets	3,705		3,705		4,117
Capital expenditures	3	4	6	9
Latin America | Operating Segments
Segment Reporting Information
External Revenues	75	52	204	149
Profit before income taxes	31	(19)	65	15
Interest Expense	37	19	98	48
Depreciation on equipment leased to others	3	2	7	6
Provision for credit losses	(8)	40	(3)	47
Assets	2,539		2,539		2,405
Capital expenditures	3	1	21	9
Mining | Operating Segments
Segment Reporting Information
External Revenues	72	73	218	215
Profit before income taxes	21	22	66	79
Interest Expense	11	8	29	28
Depreciation on equipment leased to others	35	34	109	103
Provision for credit losses	(4)	2	(14)	(17)
Assets	2,553		2,553		2,672
Capital expenditures	36	28	83	128
Caterpillar Power Finance | Operating Segments
Segment Reporting Information
External Revenues	11	13	41	40
Profit before income taxes	12	4	35	34
Interest Expense	5	3	10	10
Depreciation on equipment leased to others	1	1	2	2
Provision for credit losses	(7)	0	(14)	(19)
Assets	738		738		$ 957
Capital expenditures	$ 0	$ 0	$ 0	$ 0