Finance Receivables (Details 3) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Allowance for Credit Losses
Beginning Balance	$ 348	$ 357	$ 346	$ 337
Write-offs	(21)	(18)	(41)	(38)
Recoveries	13	18	23	30
Financing Receivable, Credit Loss, Expense (Reversal)	(21)	22	(10)	48
Financing Receivable, Allowance for Credit Losses, Other	1	(3)	2	(1)
Ending Balance	320	376	320	376
Customer
Financing Receivable, Allowance for Credit Losses
Beginning Balance	278	271	277	251
Write-offs	(21)	(18)	(41)	(38)
Recoveries	13	18	23	30
Financing Receivable, Credit Loss, Expense (Reversal)	(6)	22	4	48
Financing Receivable, Allowance for Credit Losses, Other	1	(3)	2	(1)
Ending Balance	265	290	265	290
Dealer
Financing Receivable, Allowance for Credit Losses
Beginning Balance	65	81	65	82
Write-offs	0	0	0	0
Recoveries	0	0	0	0
Financing Receivable, Credit Loss, Expense (Reversal)	(15)	1	(15)	0
Financing Receivable, Allowance for Credit Losses, Other	0	0	0	0
Ending Balance	50	82	50	82
Caterpillar Purchased Receivables
Financing Receivable, Allowance for Credit Losses
Beginning Balance	5	5	4	4
Write-offs	0	0	0	0
Recoveries	0	0	0	0
Financing Receivable, Credit Loss, Expense (Reversal)	0	(1)	1	0
Financing Receivable, Allowance for Credit Losses, Other	0	0	0	0
Ending Balance	$ 5	$ 4	$ 5	$ 4