Finance Receivables (Details 8) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) contracts	Mar. 31, 2019 USD ($) contracts
Finance receivables modified as TDRs
Number of Contracts | contracts	5	25
Pre-TDR Amortized Cost	$ 2	$ 58
Post-TDR Amortized Cost	$ 2	$ 57
Customer
TDRs which had been modified within twelve months of the default date [Abstract]
Number of Contracts | contracts	5	0
Post-TDR Amortized Cost	$ 11	$ 0
Customer | EAME
Finance receivables modified as TDRs
Number of Contracts | contracts	0	17
Pre-TDR Amortized Cost	$ 0	$ 7
Post-TDR Amortized Cost	$ 0	$ 7
TDRs which had been modified within twelve months of the default date [Abstract]
Number of Contracts | contracts	2	0
Post-TDR Amortized Cost	$ 10	$ 0
Customer | Latin America
Finance receivables modified as TDRs
Number of Contracts | contracts	5	0
Pre-TDR Amortized Cost	$ 2	$ 0
Post-TDR Amortized Cost	$ 2	$ 0
TDRs which had been modified within twelve months of the default date [Abstract]
Number of Contracts | contracts	3	0
Post-TDR Amortized Cost	$ 1	$ 0
Customer | Caterpillar Power Finance
Finance receivables modified as TDRs
Number of Contracts | contracts	0	8
Pre-TDR Amortized Cost	$ 0	$ 51
Post-TDR Amortized Cost	$ 0	$ 50
Dealer
Finance receivables modified as TDRs
Number of Contracts | contracts	0	0
Caterpillar Purchased Receivables
Finance receivables modified as TDRs
Number of Contracts | contracts	0	0