Finance Receivables (Details 3) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Losses
Beginning Balance	$ 331	$ 346
Write-offs	(70)	(20)
Recoveries	15	10
Financing Receivable, Credit Loss, Expense (Reversal)	9	11
Financing Receivable, Allowance for Credit Losses, Other	(4)	1
Ending Balance	281	348
Customer
Financing Receivable, Allowance for Credit Losses
Beginning Balance	276	277
Write-offs	(23)	(20)
Recoveries	15	10
Financing Receivable, Credit Loss, Expense (Reversal)	9	10
Financing Receivable, Allowance for Credit Losses, Other	(4)	1
Ending Balance	273	278
Dealer
Financing Receivable, Allowance for Credit Losses
Beginning Balance	51	65
Write-offs	(47)	0
Recoveries	0	0
Financing Receivable, Credit Loss, Expense (Reversal)	0	0
Financing Receivable, Allowance for Credit Losses, Other	0	0
Ending Balance	4	65
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)	0	1
Financing Receivable, Allowance for Credit Losses, Other	0	0
Ending Balance	$ 4	$ 5