Finance Receivables - Allowance for Credit Losses and Total Finance Receivables (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 267	$ 331
Write-offs	(30)	(70)
Recoveries	10	15
Provision for credit losses	33	9
Other	2	(4)
Ending Balance	282	281
Total Finance Receivables	29,682	27,934	$ 29,231
Customer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	258	276
Write-offs	(30)	(23)
Recoveries	10	15
Provision for credit losses	33	9
Other	2	(4)
Ending Balance	273	273
Total Finance Receivables	22,701	20,963	22,199
Dealer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	4	51
Write-offs	0	(47)
Recoveries	0	0
Provision for credit losses	0	0
Other	0	0
Ending Balance	4	4
Total Finance Receivables	2,504	2,776
Caterpillar Purchased Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5	4
Write-offs	0	0
Recoveries	0	0
Provision for credit losses	0	0
Other	0	0
Ending Balance	5	4
Total Finance Receivables	$ 4,477	$ 4,195	$ 4,283