Finance Receivables (Details 3) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Losses
Beginning Balance	$ 320	$ 376	$ 346	$ 337
Write-offs	(22)	(30)	(63)	(68)
Recoveries	13	17	36	47
Financing Receivable, Credit Loss, Expense (Reversal)	32	(19)	22	29
Financing Receivable, Allowance for Credit Losses, Other	(3)	(5)	(1)	(6)
Ending Balance	340	339	340	339
Customer
Financing Receivable, Allowance for Credit Losses
Beginning Balance	265	290	277	251
Write-offs	(22)	(30)	(63)	(68)
Recoveries	13	17	36	47
Financing Receivable, Credit Loss, Expense (Reversal)	31	(2)	35	46
Financing Receivable, Allowance for Credit Losses, Other	(3)	(5)	(1)	(6)
Ending Balance	284	270	284	270
Dealer
Financing Receivable, Allowance for Credit Losses
Beginning Balance	50	82	65	82
Write-offs	0	0	0	0
Recoveries	0	0	0	0
Financing Receivable, Credit Loss, Expense (Reversal)	1	(17)	(14)	(17)
Financing Receivable, Allowance for Credit Losses, Other	0	0	0	0
Ending Balance	51	65	51	65
Caterpillar Purchased Receivables
Financing Receivable, Allowance for Credit Losses
Beginning Balance	5	4	4	4
Write-offs	0	0	0	0
Recoveries	0	0	0	0
Financing Receivable, Credit Loss, Expense (Reversal)	0	0	1	0
Financing Receivable, Allowance for Credit Losses, Other	0	0	0	0
Ending Balance	$ 5	$ 4	$ 5	$ 4