Finance Receivables (Details 3) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Allowance for Credit Losses
Beginning Balance	$ 346	$ 337
Write-offs	(20)	(20)
Recoveries	10	12
Financing Receivable, Credit Loss, Expense (Reversal)	11	26
Financing Receivable, Allowance for Credit Losses, Other	1	2
Ending Balance(2)	348	357
Customer
Financing Receivable, Allowance for Credit Losses
Beginning Balance	277	251
Write-offs	(20)	(20)
Recoveries	10	12
Financing Receivable, Credit Loss, Expense (Reversal)	10	26
Financing Receivable, Allowance for Credit Losses, Other	1	2
Ending Balance(2)	278	271
Dealer
Financing Receivable, Allowance for Credit Losses
Beginning Balance	65	82
Write-offs	0	0
Recoveries	0	0
Financing Receivable, Credit Loss, Expense (Reversal)	0	(1)
Financing Receivable, Allowance for Credit Losses, Other	0	0
Ending Balance(2)	65	81
Caterpillar Purchased Receivables
Financing Receivable, Allowance for Credit Losses
Beginning Balance	4	4
Write-offs	0	0
Recoveries	0	0
Financing Receivable, Credit Loss, Expense (Reversal)	1	1
Financing Receivable, Allowance for Credit Losses, Other	0	0
Ending Balance(2)	$ 5	$ 5