CREDIT FACILITIES AND LONG-TERM DEBT - Non-Recourse Asset-backed Debt (Details)	Sep. 30, 2022 USD ($)
Line of Credit
Debt Instrument [Line Items]
Borrowing capacity	$ 11,800,000,000
Line of Credit | Asset Back Senior Credit Facility and Mezzanine Term Debt Facilities
Debt Instrument [Line Items]
Borrowing capacity	11,800,000,000
Fully committed borrowing capacity, maximum	8,600,000,000
Line of Credit | Asset-backed Senior Revolving Credit Facilities
Debt Instrument [Line Items]
Borrowing capacity	8,300,000,000
Line of Credit | Asset-backed Mezzanine Term Debt Facilities
Debt Instrument [Line Items]
Borrowing capacity	3,500,000,000
Revolving Credit Facility | Asset-backed Senior Revolving Credit Facilities | Multiple Senior Revolving Credit Facilities
Debt Instrument [Line Items]
Fully committed borrowing capacity	4,000,000,000
Revolving Credit Facility | Asset-backed Senior Revolving Credit Facilities | Multiple Term Loan Facilities
Debt Instrument [Line Items]
Fully committed borrowing capacity	2,100,000,000
Revolving Credit Facility | Asset-backed Mezzanine Term Debt Facilities | Multiple Senior Revolving Credit Facilities
Debt Instrument [Line Items]
Fully committed borrowing capacity	$ 2,500,000,000