Segment and Geographic Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information
External Revenues	$ 2,734	$ 2,562	$ 2,550
Profit before income taxes	731	695	434
Interest Expense	566	455	591
Depreciation on equipment leased to others	718	755	758
Provision for credit losses	81	70	266
Assets	31,957	32,387	31,991
Capital expenditures	1,139	1,216	1,100
Operating Segments
Segment Reporting Information
External Revenues	2,711	2,558	2,544
Profit before income taxes	881	825	537
Interest Expense	608	473	601
Depreciation on equipment leased to others	718	755	758
Provision for credit losses	81	70	267
Assets	30,257	31,098	30,819
Capital expenditures	1,130	1,208	1,089
Unallocated
Segment Reporting Information
External Revenues	35	15	25
Profit before income taxes	(312)	(295)	(287)
Interest Expense	204	179	207
Depreciation on equipment leased to others	0	0	0
Provision for credit losses	0	0	(1)
Assets	1,628	1,458	1,576
Capital expenditures	9	8	11
Segment Reconciling Items | Timing
Segment Reporting Information
External Revenues	(12)	(11)	(19)
Profit before income taxes	4	6	(3)
Interest Expense	0	0	0
Depreciation on equipment leased to others	0	0	0
Provision for credit losses	0	0	0
Assets	18	15	12
Capital expenditures	0	0	0
Segment Reconciling Items | Methodology
Segment Reporting Information
External Revenues	0	0	0
Profit before income taxes	158	159	187
Interest Expense	(246)	(197)	(217)
Depreciation on equipment leased to others	0	0	0
Provision for credit losses	0	0	0
Assets	278	18	(152)
Capital expenditures	0	0	0
Inter-segment Eliminations
Segment Reporting Information
External Revenues	0	0	0
Profit before income taxes	0	0	0
Interest Expense	0	0	0
Depreciation on equipment leased to others	0	0	0
Provision for credit losses	0	0	0
Assets	(224)	(202)	(264)
Capital expenditures	0	0	0
North America | Operating Segments
Segment Reporting Information
External Revenues	1,512	1,401	1,401
Profit before income taxes	550	419	312
Interest Expense	263	250	322
Depreciation on equipment leased to others	503	542	538
Provision for credit losses	25	15	69
Assets	15,229	15,755	14,749
Capital expenditures	862	888	864
EAME | Operating Segments
Segment Reporting Information
External Revenues	285	274	271
Profit before income taxes	12	73	44
Interest Expense	79	21	37
Depreciation on equipment leased to others	55	60	62
Provision for credit losses	49	30	50
Assets	5,067	5,192	4,981
Capital expenditures	117	92	37
Asia/Pacific | Operating Segments
Segment Reporting Information
External Revenues	283	340	338
Profit before income taxes	134	170	145
Interest Expense	73	84	94
Depreciation on equipment leased to others	5	7	9
Provision for credit losses	6	9	38
Assets	3,921	4,117	4,585
Capital expenditures	6	10	7
Latin America | Operating Segments
Segment Reporting Information
External Revenues	284	202	201
Profit before income taxes	85	24	41
Interest Expense	136	68	70
Depreciation on equipment leased to others	10	8	11
Provision for credit losses	7	52	33
Assets	2,636	2,405	2,621
Capital expenditures	25	12	7
Mining | Operating Segments
Segment Reporting Information
External Revenues	294	289	279
Profit before income taxes	63	98	33
Interest Expense	42	37	53
Depreciation on equipment leased to others	143	136	137
Provision for credit losses	9	(15)	27
Assets	2,700	2,672	2,575
Capital expenditures	120	206	151
Caterpillar Power Finance | Operating Segments
Segment Reporting Information
External Revenues	53	52	54
Profit before income taxes	37	41	(38)
Interest Expense	15	13	25
Depreciation on equipment leased to others	2	2	1
Provision for credit losses	(15)	(21)	50
Assets	704	957	1,308
Capital expenditures	$ 0	$ 0	$ 23