Cat Financial Financing Activities (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Finance receivables
Wholesale inventory receivables	$ 23,029	$ 22,449
Weighted average term	51 months
Weighted average remaining term	27 months
Period after which unpaid installments are considered as past due	30 days
Extended Maturity
Finance receivables
Financing receivable, borrowers not considered to be experiencing financial difficulty, maximum period	6 months
Payment Deferral
Finance receivables
Financing receivable, borrowers not considered to be experiencing financial difficulty, maximum period	4 months
Dealer
Finance receivables
Wholesale inventory receivables	$ 1,512	1,878
Financing receivable, modified in period, amount	0	0
Dealer \| Latin America
Finance receivables
Non-accrual With an Allowance	0	44
Dealer \| Latin America \| 91 Days or More Past Due
Finance receivables
Financing receivable, originated prior to 2019		44
Customer
Finance receivables
Wholesale inventory receivables	21,517	20,571
Financing receivable, modified in period, amount	$ 33	$ 47
Financing receivable, modified, percentage	0.15%	0.21%
Wholesale receivables
Finance receivables
Wholesale inventory receivables	$ 1,750	$ 1,632

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