DERIVATIVES AND HEDGING - Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Offsetting Derivative Assets [Abstract]
Gross Amounts of Recognized Financial Instruments	$ 1,017	$ 1,478
Gross Amounts Offset in the Statements of Financial Position	(848)	(1,475)
Net Amounts Presented in the Statements of Financial Position	169	3
Financial Instruments/Collateral	(169)	0
Net Amount	0	3
Offsetting Securities Purchased under Agreements to Resell [Abstract]
Gross Amounts of Recognized Financial Instruments		0
Gross Amounts Offset in the Statements of Financial Position		0
Net Amounts Presented in the Statements of Financial Position		0
Financial Instruments/Collateral		0
Net Amount		0
Offsetting Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed [Abstract]
Gross Amounts of Recognized Financial Instruments	1,017	1,478
Gross Amounts Offset in the Statements of Financial Position	(848)	(1,475)
Net Amounts Presented in the Statements of Financial Position	169	3
Financial Instruments/Collateral	(169)	0
Net Amount	0	3
Offsetting Derivative Liabilities [Abstract]
Gross Amounts of Recognized Financial Instruments	1,657	1,368
Gross Amounts Offset in the Statements of Financial Position	(1,083)	(1,154)
Net Amounts Presented in the Statements of Financial Position	574	215
Financial Instruments/Collateral	0	(215)
Net Amount	574	0
Offsetting Securities Sold under Agreements to Repurchase [Abstract]
Gross Amounts of Recognized Financial Instruments		0
Gross Amounts Offset in the Statements of Financial Position		0
Net Amounts Presented in the Statements of Financial Position		0
Financial Instruments/Collateral		0
Net Amount		0
Offsetting Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned [Abstract]
Gross Amounts of Recognized Financial Instruments	1,657	1,368
Gross Amounts Offset in the Statements of Financial Position	(1,083)	(1,154)
Net Amounts Presented in the Statements of Financial Position	574	215
Financial Instruments/Collateral	0	(215)
Net Amount	$ 574	$ 0