Finance Receivables (Details 7) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) contracts	Mar. 31, 2021 USD ($) contracts
Customer
Finance receivables modified as TDRs
Pre-TDR Amortized Cost	$ 7	$ 11
Post-TDR Amortized Cost	7	5
TDRs with a payment default which had been modified within twelve months prior to the default date
Post-TDR Amortized Cost	5	10
Customer | North America
TDRs with a payment default which had been modified within twelve months prior to the default date
Post-TDR Amortized Cost	0	1
Customer | EAME
Finance receivables modified as TDRs
Pre-TDR Amortized Cost	1	0
Post-TDR Amortized Cost	1	0
Customer | Asia/Pacific
TDRs with a payment default which had been modified within twelve months prior to the default date
Post-TDR Amortized Cost	0	4
Customer | Mining
Finance receivables modified as TDRs
Pre-TDR Amortized Cost	0	11
Post-TDR Amortized Cost	0	5
TDRs with a payment default which had been modified within twelve months prior to the default date
Post-TDR Amortized Cost	5	0
Customer | Caterpillar Power Finance
Finance receivables modified as TDRs
Pre-TDR Amortized Cost	6	0
Post-TDR Amortized Cost	6	0
TDRs with a payment default which had been modified within twelve months prior to the default date
Post-TDR Amortized Cost	$ 0	$ 5
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