DERIVATIVES AND HEDGE ACCOUNTING (Details - Notional amounts and fair values of derivative instruments) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	$ 148,222,000,000	$ 132,965,000,000
Gross Derivative Assets, Fair Value	6,805,000,000	5,026,000,000
Gross Derivative Liabilities, Notional Amount	77,471,000,000	61,482,000,000
Gross Derivative Liabilities, Fair Value	5,822,000,000	4,009,000,000
Derivative assets, Counterparty netting	(3,812,000,000)	(2,427,000,000)
Derivative assets, Cash collateral	(2,219,000,000)	(1,806,000,000)
Total derivative assets on consolidated balance sheet	774,000,000	793,000,000
Derivative liabilities, Counterparty netting	(3,812,000,000)	(2,427,000,000)
Derivative liabilities, Cash collateral	(1,441,000,000)	(527,000,000)
Total derivative liabilities on consolidated balance sheet	569,000,000	1,055,000,000
Bifurcated embedded derivatives
Derivative [Line Items]
Gross Derivative Liabilities, Fair Value	15,800,000,000	6,900,000,000
Bifurcated embedded derivatives assets, fair value	0	0
Derivatives designated as hedging instruments | Interest rate contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	815,000,000	495,000,000
Gross Derivative Assets, Fair Value	16,000,000	3,000,000
Gross Derivative Liabilities, Notional Amount	356,000,000	410,000,000
Gross Derivative Liabilities, Fair Value	11,000,000	7,000,000
Derivatives designated as hedging instruments | Foreign exchange contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	3,468,000,000	4,328,000,000
Gross Derivative Assets, Fair Value	256,000,000	342,000,000
Gross Derivative Liabilities, Notional Amount	7,424,000,000	5,230,000,000
Gross Derivative Liabilities, Fair Value	379,000,000	162,000,000
Derivatives not designated as hedging instruments | Interest rate contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	62,259,000,000	52,437,000,000
Gross Derivative Assets, Fair Value	4,621,000,000	3,197,000,000
Gross Derivative Liabilities, Notional Amount	48,732,000,000	35,231,000,000
Gross Derivative Liabilities, Fair Value	4,425,000,000	2,742,000,000
Derivatives not designated as hedging instruments | Foreign exchange contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	9,518,000,000	8,133,000,000
Gross Derivative Assets, Fair Value	766,000,000	698,000,000
Gross Derivative Liabilities, Notional Amount	12,860,000,000	12,093,000,000
Gross Derivative Liabilities, Fair Value	711,000,000	863,000,000
Derivatives not designated as hedging instruments | Equity contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	22,924,000,000	18,533,000,000
Gross Derivative Assets, Fair Value	1,130,000,000	769,000,000
Gross Derivative Liabilities, Notional Amount	7,076,000,000	7,539,000,000
Gross Derivative Liabilities, Fair Value	223,000,000	139,000,000
Derivatives not designated as hedging instruments | Credit contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	5,797,000,000	8,457,000,000
Gross Derivative Assets, Fair Value	2,000,000	3,000,000
Gross Derivative Liabilities, Notional Amount	969,000,000	923,000,000
Gross Derivative Liabilities, Fair Value	67,000,000	89,000,000
Derivatives not designated as hedging instruments | Other contracts
Derivative [Line Items]
Gross Derivative Assets, Notional Amount	43,441,000,000	40,582,000,000
Gross Derivative Assets, Fair Value	14,000,000	14,000,000
Gross Derivative Liabilities, Notional Amount	54,000,000	56,000,000
Gross Derivative Liabilities, Fair Value	6,000,000	7,000,000
Derivatives not designated as hedging instruments | Bifurcated embedded derivatives
Derivative [Line Items]
Gross Derivative Liabilities, Notional Amount	137,000,000	152,000,000
Gross Derivative Liabilities, Fair Value	$ 44,000,000	$ 48,000,000