DERIVATIVES AND HEDGE ACCOUNTING (Details - Notional amounts and fair values of derivative instruments) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	$ 141,364	$ 148,222
Gross Derivative Assets, Fair Value	5,287	6,805
Gross Derivative Liabilities, Notional Amount	67,932	77,471
Gross Derivative Liabilities, Fair Value	5,912	5,822
Derivative assets, Counterparty netting	(3,080)	(3,812)
Derivative assets, Cash collateral	(1,314)	(2,219)
Total derivative assets on consolidated balance sheet	893	774
Derivative liabilities, Counterparty netting	(3,080)	(3,812)
Derivative liabilities, Cash collateral	(2,129)	(1,441)
Total derivative liabilities on consolidated balance sheet	703	569
Bifurcated embedded derivatives
Derivative [Line Items]
Bifurcated embedded derivative liabilities, fair value	11,100	15,800
Derivatives designated as hedging instruments | Interest rate contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	877	815
Gross Derivative Assets, Fair Value	16	16
Gross Derivative Liabilities, Notional Amount	295	356
Gross Derivative Liabilities, Fair Value	6	11
Derivatives designated as hedging instruments | Foreign exchange contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	6,232	3,468
Gross Derivative Assets, Fair Value	380	256
Gross Derivative Liabilities, Notional Amount	4,135	7,424
Gross Derivative Liabilities, Fair Value	293	379
Derivatives not designated as hedging instruments | Interest rate contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	49,790	62,259
Gross Derivative Assets, Fair Value	3,608	4,621
Gross Derivative Liabilities, Notional Amount	47,401	48,732
Gross Derivative Liabilities, Fair Value	4,898	4,425
Derivatives not designated as hedging instruments | Foreign exchange contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	13,476	9,518
Gross Derivative Assets, Fair Value	689	766
Gross Derivative Liabilities, Notional Amount	7,258	12,860
Gross Derivative Liabilities, Fair Value	561	711
Derivatives not designated as hedging instruments | Equity contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	23,163	22,924
Gross Derivative Assets, Fair Value	580	1,130
Gross Derivative Liabilities, Notional Amount	7,830	7,076
Gross Derivative Liabilities, Fair Value	85	223
Derivatives not designated as hedging instruments | Credit contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	4,796	5,797
Gross Derivative Assets, Fair Value	1	2
Gross Derivative Liabilities, Notional Amount	958	969
Gross Derivative Liabilities, Fair Value	65	67
Derivatives not designated as hedging instruments | Credit contracts | CDS
Derivative [Line Items]
Gross Derivative Liabilities, Notional Amount	125	137
Gross Derivative Liabilities, Fair Value	44	44
Derivatives not designated as hedging instruments | Other contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	43,030	43,441
Gross Derivative Assets, Fair Value	13	14
Gross Derivative Liabilities, Notional Amount	55	54
Gross Derivative Liabilities, Fair Value	$ 4	$ 6