Finance Receivables (Details 5) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Receivables [Abstract]
Period after which unpaid installments are considered as past due	30 days
Financing Receivable, Past Due
Total Finance Receivables	$ 27,336	$ 26,787	$ 27,712
Caterpillar Purchased Receivables
Financing Receivable, Past Due
Total Finance Receivables	4,731	4,297	$ 4,647
Caterpillar Purchased Receivables | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	17	28
Caterpillar Purchased Receivables | 61-90 days past due
Financing Receivable, Past Due
Total Finance Receivables	8	11
Caterpillar Purchased Receivables | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	21	22
Caterpillar Purchased Receivables | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	46	61
Caterpillar Purchased Receivables | Current
Financing Receivable, Past Due
Total Finance Receivables	4,685	4,236
Caterpillar Purchased Receivables | North America
Financing Receivable, Past Due
Total Finance Receivables	2,692	2,480
Caterpillar Purchased Receivables | North America | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	6	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	3	4
Caterpillar Purchased Receivables | North America | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	13	22
Caterpillar Purchased Receivables | North America | Current
Financing Receivable, Past Due
Total Finance Receivables	2,679	2,458
Caterpillar Purchased Receivables | EAME
Financing Receivable, Past Due
Total Finance Receivables	886	815
Caterpillar Purchased Receivables | EAME | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	0	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	2	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	883	812
Caterpillar Purchased Receivables | Asia/Pacific
Financing Receivable, Past Due
Total Finance Receivables	709	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	1	2
Caterpillar Purchased Receivables | Asia/Pacific | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	1	2
Caterpillar Purchased Receivables | Asia/Pacific | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	3	10
Caterpillar Purchased Receivables | Asia/Pacific | Current
Financing Receivable, Past Due
Total Finance Receivables	706	555
Caterpillar Purchased Receivables | Latin America
Financing Receivable, Past Due
Total Finance Receivables	432	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	2	2
Caterpillar Purchased Receivables | Latin America | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	14	14
Caterpillar Purchased Receivables | Latin America | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	23	25
Caterpillar Purchased Receivables | Latin America | Current
Financing Receivable, Past Due
Total Finance Receivables	409	406
Caterpillar Purchased Receivables | Power Finance
Financing Receivable, Past Due
Total Finance Receivables	12	6
Caterpillar Purchased Receivables | Power Finance | 31-60 days past due
Financing Receivable, Past Due
Total Finance Receivables	3	1
Caterpillar Purchased Receivables | Power Finance | 61-90 days past due
Financing Receivable, Past Due
Total Finance Receivables	0	0
Caterpillar Purchased Receivables | Power Finance | 91+ days past due
Financing Receivable, Past Due
Total Finance Receivables	1	0
Caterpillar Purchased Receivables | Power Finance | Total Past Due
Financing Receivable, Past Due
Total Finance Receivables	4	1
Caterpillar Purchased Receivables | Power Finance | Current
Financing Receivable, Past Due
Total Finance Receivables	$ 8	$ 5