COMMITMENTS, CONTINGENCIES, AND GUARANTEES (SC Commitments) (Details) - SC - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Consumer arrangements
Long-term Purchase Commitment [Line Items]
Contingencies	$ 12,300	$ 1,991
Chrysler | Revenue-sharing and gain/(loss), net-sharing payments
Long-term Purchase Commitment [Line Items]
Commitments	(2,228)	12,132
Bank of America | Servicer performance fee
Long-term Purchase Commitment [Line Items]
Commitments	1,508	2,503
CBP | Loss-sharing payments
Long-term Purchase Commitment [Line Items]
Commitments	$ 940	$ 1,429