Finance Receivables (Details 5) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Receivables [Abstract]
Period after which unpaid installments are considered as past due	30 days
Financing Receivable, Past Due
Total Finance Receivables	$ 27,694	$ 26,787	$ 26,739
Caterpillar Purchased Receivables
Financing Receivable, Past Due
Total Finance Receivables	4,748	4,297	$ 3,979
Caterpillar Purchased Receivables | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	18	28
Caterpillar Purchased Receivables | 61-90 days past due
Financing Receivable, Past Due
Total Finance Receivables	11	11
Caterpillar Purchased Receivables | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	18	22
Caterpillar Purchased Receivables | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	47	61
Caterpillar Purchased Receivables | Current
Financing Receivable, Past Due
Total Finance Receivables	4,701	4,236
Caterpillar Purchased Receivables | North America
Financing Receivable, Past Due
Total Finance Receivables	2,786	2,480
Caterpillar Purchased Receivables | North America | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	8	11
Caterpillar Purchased Receivables | North America | 61-90 days past due
Financing Receivable, Past Due
Total Finance Receivables	4	7
Caterpillar Purchased Receivables | North America | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	4	4
Caterpillar Purchased Receivables | North America | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	16	22
Caterpillar Purchased Receivables | North America | Current
Financing Receivable, Past Due
Total Finance Receivables	2,770	2,458
Caterpillar Purchased Receivables | EAME
Financing Receivable, Past Due
Total Finance Receivables	879	815
Caterpillar Purchased Receivables | EAME | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	1	1
Caterpillar Purchased Receivables | EAME | 61-90 days past due
Financing Receivable, Past Due
Total Finance Receivables	1	0
Caterpillar Purchased Receivables | EAME | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	1	2
Caterpillar Purchased Receivables | EAME | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	3	3
Caterpillar Purchased Receivables | EAME | Current
Financing Receivable, Past Due
Total Finance Receivables	876	812
Caterpillar Purchased Receivables | Asia/Pacific
Financing Receivable, Past Due
Total Finance Receivables	620	565
Caterpillar Purchased Receivables | Asia/Pacific | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	1	6
Caterpillar Purchased Receivables | Asia/Pacific | 61-90 days past due
Financing Receivable, Past Due
Total Finance Receivables	0	2
Caterpillar Purchased Receivables | Asia/Pacific | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	0	2
Caterpillar Purchased Receivables | Asia/Pacific | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	1	10
Caterpillar Purchased Receivables | Asia/Pacific | Current
Financing Receivable, Past Due
Total Finance Receivables	619	555
Caterpillar Purchased Receivables | Latin America
Financing Receivable, Past Due
Total Finance Receivables	450	431
Caterpillar Purchased Receivables | Latin America | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	7	9
Caterpillar Purchased Receivables | Latin America | 61-90 days past due
Financing Receivable, Past Due
Total Finance Receivables	6	2
Caterpillar Purchased Receivables | Latin America | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	12	14
Caterpillar Purchased Receivables | Latin America | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	25	25
Caterpillar Purchased Receivables | Latin America | Current
Financing Receivable, Past Due
Total Finance Receivables	425	406
Caterpillar Purchased Receivables | Power
Financing Receivable, Past Due
Total Finance Receivables	13	6
Caterpillar Purchased Receivables | Power | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	1	1
Caterpillar Purchased Receivables | Power | 61-90 days past due
Financing Receivable, Past Due
Total Finance Receivables	0	0
Caterpillar Purchased Receivables | Power | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	1	0
Caterpillar Purchased Receivables | Power | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	2	1
Caterpillar Purchased Receivables | Power | Current
Financing Receivable, Past Due
Total Finance Receivables	$ 11	$ 5