COMMITMENTS, CONTINGENCIES, AND GUARANTEES (Chrysler Agreement) (Details) - SC - Chrysler	Jun. 30, 2020 USD ($)
Other Commitments [Line Items]
Financing dedicated to FCA retail financing	$ 4,500,000,000
Minimum
Other Commitments [Line Items]
Funding available for dealer inventory financing	$ 5,000,000,000.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration