Finance Receivables (Details 8) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Dealer
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 0	$ 0	$ 0	$ 0
Caterpillar Purchased Receivables
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	0	0	0	0
Customer
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 3	$ 22	$ 6	$ 30
Financing Receivable, Modification To Total Financing Receivables, Percent	0.02%	0.08%	0.03%	0.11%
Financing Receivable, Modified, Weighted Average Term Increase from Modification	13 months	18 months	11 months	21 months
Financing Receivable, Modified, Weighted Average Payment Delay	6 months	7 months	8 months	8 months