Finance Receivables (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Receivables [Abstract]
Period after which unpaid installments are considered as past due	30 days
Period after which collection of future income is considered as not probable	120 days
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	$ 26,787	$ 27,514
Caterpillar Purchased Receivables
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	4,297	4,462
Caterpillar Purchased Receivables | 31-60 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	28	10
Caterpillar Purchased Receivables | 61-90 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	11	7
Caterpillar Purchased Receivables | 91+ days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	22	7
Caterpillar Purchased Receivables | Total Past Due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	61	24
Caterpillar Purchased Receivables | Current
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	4,236	4,438
Caterpillar Purchased Receivables | North America
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	2,480	2,518
Caterpillar Purchased Receivables | North America | 31-60 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	11	8
Caterpillar Purchased Receivables | North America | 61-90 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	7	6
Caterpillar Purchased Receivables | North America | 91+ days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	4	5
Caterpillar Purchased Receivables | North America | Total Past Due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	22	19
Caterpillar Purchased Receivables | North America | Current
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	2,458	2,499
Caterpillar Purchased Receivables | EAME
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	815	846
Caterpillar Purchased Receivables | EAME | 31-60 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	1	1
Caterpillar Purchased Receivables | EAME | 61-90 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	0	0
Caterpillar Purchased Receivables | EAME | 91+ days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	2	1
Caterpillar Purchased Receivables | EAME | Total Past Due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	3	2
Caterpillar Purchased Receivables | EAME | Current
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	812	844
Caterpillar Purchased Receivables | Asia/Pacific
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	565	621
Caterpillar Purchased Receivables | Asia/Pacific | 31-60 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	6	0
Caterpillar Purchased Receivables | Asia/Pacific | 61-90 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	2	0
Caterpillar Purchased Receivables | Asia/Pacific | 91+ days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	2	1
Caterpillar Purchased Receivables | Asia/Pacific | Total Past Due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	10	1
Caterpillar Purchased Receivables | Asia/Pacific | Current
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	555	620
Caterpillar Purchased Receivables | Latin America
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	431	474
Caterpillar Purchased Receivables | Latin America | 31-60 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	9	1
Caterpillar Purchased Receivables | Latin America | 61-90 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	2	1
Caterpillar Purchased Receivables | Latin America | 91+ days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	14	0
Caterpillar Purchased Receivables | Latin America | Total Past Due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	25	2
Caterpillar Purchased Receivables | Latin America | Current
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	406	472
Caterpillar Purchased Receivables | Caterpillar Power Finance
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	6	3
Caterpillar Purchased Receivables | Caterpillar Power Finance | 31-60 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	1	0
Caterpillar Purchased Receivables | Caterpillar Power Finance | 61-90 days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	0	0
Caterpillar Purchased Receivables | Caterpillar Power Finance | 91+ days past due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	0	0
Caterpillar Purchased Receivables | Caterpillar Power Finance | Total Past Due
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	1	0
Caterpillar Purchased Receivables | Caterpillar Power Finance | Current
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	5	3
Dealer
Financing Receivable, Past Due
Financing Receivable, before Allowance for Credit Loss	2,137	$ 2,210
Dealer | Total past due
Financing Receivable, Past Due
Prior	62
2018 and 2017, respectively	$ 78