TRANSFERS OF RECEIVABLES AND VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Securitization Transactions [Line Items]
Cash and cash equivalents	$ 8,764	$ 9,272
After Allowance for Credit Losses	145,692		$ 142,207
Related Debt	140,165	137,868
VIE
Securitization Transactions [Line Items]
Cash and cash equivalents	2,492	2,494
Related Debt	48,225	50,855
VIE | Securitization Transactions
Securitization Transactions [Line Items]
Cash and cash equivalents	2,500	2,500
Before Allowance for Credit Losses	72,100	74,300
Allowance for Credit Losses	(300)	(300)
After Allowance for Credit Losses	71,800	74,000
Related Debt	48,200	50,900
VIE | Securitization Transactions | Retail financing
Securitization Transactions [Line Items]
Cash and cash equivalents	1,700	1,700
Before Allowance for Credit Losses	37,200	37,000
Allowance for Credit Losses	(300)	(300)
After Allowance for Credit Losses	36,900	36,700
Related Debt	31,500	31,600
VIE | Securitization Transactions | Wholesale financing
Securitization Transactions [Line Items]
Cash and cash equivalents	200	300
Before Allowance for Credit Losses	22,400	24,000
Allowance for Credit Losses	0	0
After Allowance for Credit Losses	22,400	24,000
Related Debt	8,900	10,800
VIE | Securitization Transactions | Finance receivables
Securitization Transactions [Line Items]
Cash and cash equivalents	1,900	2,000
Before Allowance for Credit Losses	59,600	61,000
Allowance for Credit Losses	(300)	(300)
After Allowance for Credit Losses	59,300	60,700
Related Debt	40,400	42,400
VIE | Securitization Transactions | Net investment in operating leases
Securitization Transactions [Line Items]
Cash and cash equivalents	600	500
Before Allowance for Credit Losses	12,500	13,300
Allowance for Credit Losses	0	0
After Allowance for Credit Losses	12,500	13,300
Related Debt	7,800	8,500
Non-VIE | Securitization Transactions
Securitization Transactions [Line Items]
Cash and cash equivalents	400	500
Before Allowance for Credit Losses	9,400	11,000
Allowance for Credit Losses	(100)	(100)
After Allowance for Credit Losses	9,300	10,900
Related Debt	8,500	9,500
Non-VIE | Securitization Transactions | Retail financing
Securitization Transactions [Line Items]
Cash and cash equivalents	400	500
Before Allowance for Credit Losses	9,000	10,600
Allowance for Credit Losses	(100)	(100)
After Allowance for Credit Losses	8,900	10,500
Related Debt	8,200	9,300
Non-VIE | Securitization Transactions | Wholesale financing
Securitization Transactions [Line Items]
Cash and cash equivalents	0	0
Before Allowance for Credit Losses	400	400
Allowance for Credit Losses	0	0
After Allowance for Credit Losses	400	400
Related Debt	300	200
Non-VIE | Securitization Transactions | Finance receivables
Securitization Transactions [Line Items]
Cash and cash equivalents	400	500
Before Allowance for Credit Losses	9,400	11,000
Allowance for Credit Losses	(100)	(100)
After Allowance for Credit Losses	9,300	10,900
Related Debt	8,500	9,500
Non-VIE | Securitization Transactions | Net investment in operating leases
Securitization Transactions [Line Items]
Cash and cash equivalents	0	0
Before Allowance for Credit Losses	0	0
Allowance for Credit Losses	0	0
After Allowance for Credit Losses	0	0
Related Debt	0	0
Total securitization transactions | Securitization Transactions
Securitization Transactions [Line Items]
Cash and cash equivalents	2,900	3,000
Before Allowance for Credit Losses	81,500	85,300
Allowance for Credit Losses	(400)	(400)
After Allowance for Credit Losses	81,100	84,900
Related Debt	56,700	60,400
Total securitization transactions | Securitization Transactions | Retail financing
Securitization Transactions [Line Items]
Cash and cash equivalents	2,100	2,200
Before Allowance for Credit Losses	46,200	47,600
Allowance for Credit Losses	(400)	(400)
After Allowance for Credit Losses	45,800	47,200
Related Debt	39,700	40,900
Total securitization transactions | Securitization Transactions | Wholesale financing
Securitization Transactions [Line Items]
Cash and cash equivalents	200	300
Before Allowance for Credit Losses	22,800	24,400
Allowance for Credit Losses	0	0
After Allowance for Credit Losses	22,800	24,400
Related Debt	9,200	11,000
Total securitization transactions | Securitization Transactions | Finance receivables
Securitization Transactions [Line Items]
Cash and cash equivalents	2,300	2,500
Before Allowance for Credit Losses	69,000	72,000
Allowance for Credit Losses	(400)	(400)
After Allowance for Credit Losses	68,600	71,600
Related Debt	48,900	51,900
Total securitization transactions | Securitization Transactions | Net investment in operating leases
Securitization Transactions [Line Items]
Cash and cash equivalents	600	500
Before Allowance for Credit Losses	12,500	13,300
Allowance for Credit Losses	0	0
After Allowance for Credit Losses	12,500	13,300
Related Debt	$ 7,800	$ 8,500