Finance Receivables (Details 3) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses
Beginning balance	$ 337	$ 479
Write-offs	(20)	(34)
Recoveries	12	10
Provision for credit losses	26	(10)
Other	2	(4)
Ending Balance	357	441
Finance Receivables	27,712	26,941	$ 27,514
Customer
Financing Receivable, Allowance for Credit Losses
Beginning balance	251	431
Write-offs	(20)	(34)
Recoveries	12	10
Provision for credit losses	26	(10)
Other	2	(4)
Ending Balance	271	393
Finance Receivables	20,953	19,798	20,842
Dealer
Financing Receivable, Allowance for Credit Losses
Beginning balance	82	44
Write-offs	0	0
Recoveries	0	0
Provision for credit losses	(1)	0
Other	0	0
Ending Balance	81	44
Finance Receivables	2,112	3,078
Caterpillar Purchased Receivables
Financing Receivable, Allowance for Credit Losses
Beginning balance	4	4
Write-offs	0	0
Recoveries	0	0
Provision for credit losses	1	0
Other	0	0
Ending Balance	5	4
Finance Receivables	$ 4,647	$ 4,065	$ 4,462