Cat Financial Financing Activities - Financing Receivable, Nonaccrual (Details) - Finance Receivables - Customer - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Non-accrual With an Allowance	$ 152	$ 156
Non-accrual Without an Allowance	0	16
91+ Still Accruing	44	28
North America
Financing Receivable, Nonaccrual [Line Items]
Non-accrual With an Allowance	52	52
Non-accrual Without an Allowance	0	4
91+ Still Accruing	20	11
EAME
Financing Receivable, Nonaccrual [Line Items]
Non-accrual With an Allowance	34	43
Non-accrual Without an Allowance	0	0
91+ Still Accruing	18	10
Asia/Pacific
Financing Receivable, Nonaccrual [Line Items]
Non-accrual With an Allowance	8	11
Non-accrual Without an Allowance	0	0
91+ Still Accruing	5	7
Mining
Financing Receivable, Nonaccrual [Line Items]
Non-accrual With an Allowance	2	0
Non-accrual Without an Allowance	0	1
91+ Still Accruing	0	0
Latin America
Financing Receivable, Nonaccrual [Line Items]
Non-accrual With an Allowance	48	45
Non-accrual Without an Allowance	0	0
91+ Still Accruing	1	0
Power
Financing Receivable, Nonaccrual [Line Items]
Non-accrual With an Allowance	8	5
Non-accrual Without an Allowance	0	11
91+ Still Accruing	$ 0	$ 0