Guarantees and Product Warranty (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Related liability	$ 4	$ 5
Guarantor Obligations
Guarantees, maximum potential amount of future payments	655	1,221
SPC assets in consolidated statement	82,276	82,793
SPC liabilities in consolidated statement	65,179	66,277
Caterpillar dealer performance guarantees
Guarantor Obligations
Guarantees, maximum potential amount of future payments	251	747
Supplier consortium performance guarantees
Guarantor Obligations
Guarantees, maximum potential amount of future payments	239	242
Other guarantees
Guarantor Obligations
Guarantees, maximum potential amount of future payments	165	232
Variable Interest Entity, Primary Beneficiary
Guarantor Obligations
SPC assets in consolidated statement	839	888
SPC liabilities in consolidated statement	$ 838	$ 888

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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