Transactions with Related Parties (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction
Dividend paid to Caterpillar	$ 275	$ 850	$ 300
Maximum borrowing capacity from Caterpillar, Variable lending agreements	2,380
Maximum lending capacity to Caterpillar, Variable lending agreements	1,750
Payable to Caterpillar - borrowings	23	22	1,022
Payable to Caterpillar - other	101	73	65
Notes receivable from Caterpillar	482	389	356
Other receivables from Caterpillar	419	400
Revenue earned on purchased receivables	417	301	308
Financing Receivable, before Allowance for Credit Loss	26,787	27,514
Revenues	2,734	2,562	2,550
Depreciation on equipment leased to others	718	755	758
Caterpillar
Related Party Transaction
Dividend paid to Caterpillar	275	850	300
Maximum borrowing capacity from Caterpillar, Variable lending agreements	2,380
Maximum lending capacity to Caterpillar, Variable lending agreements	1,750
Other receivables from Caterpillar	133	70	65
Interest expense, Caterpillar	1	0	2
Interest income on Notes Receivable with Caterpillar	17	14	14
Purchases of receivables from Caterpillar	47,158	40,140	32,937
Revenue earned on purchased receivables	417	301	308
Marketing program payments received	339	351	353
Total portfolio, which includes Finance receivables, net and Equipment on operating lease, net	143	147
Revenues	24	25	22
Depreciation on equipment leased to others	17	17	15
Amount of our portfolio that is subject to guarantees by Caterpillar	448	568
Operational and administrative support charges reimbursed to Caterpillar	52	52	46
Administrative support services to certain Caterpillar subsidiaries reimbursed by Caterpillar	13	12	10
Caterpillar Purchased Receivables
Related Party Transaction
Financing Receivable, before Allowance for Credit Loss	$ 4,297	$ 4,462	$ 3,646