Finance Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable
Financing Receivable, before Allowance for Credit Loss	$ 26,787	$ 27,514
Less: Allowance for credit losses	(346)	(337)	$ (479)
Total finance receivables, net	26,441	27,177
Retail loans
Accounts, Notes, Loans and Financing Receivable
Financing Receivable, before Allowance for Credit Loss	14,973	14,817
Retail leases
Accounts, Notes, Loans and Financing Receivable
Financing Receivable, before Allowance for Credit Loss	6,965	7,818
Caterpillar purchased receivables
Accounts, Notes, Loans and Financing Receivable
Financing Receivable, before Allowance for Credit Loss	4,297	4,462	$ 3,646
Wholesale loans
Accounts, Notes, Loans and Financing Receivable
Financing Receivable, before Allowance for Credit Loss	545	406
Wholesale leases
Accounts, Notes, Loans and Financing Receivable
Financing Receivable, before Allowance for Credit Loss	$ 7	$ 11