FAIR VALUE MEASUREMENTS (Details - Changes in Level 3 Recurring Fair Value Measurements) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	$ 37,666	$ 38,020
Net Realized and Unrealized Gains (Losses) Included in Income	526	141
Other Comprehensive Income (Loss)	192	(531)
Purchases, Sales, Issues and Settlements, Net	(1,820)	(299)
Gross Transfers in, assets	144	242
Gross Transfers out, assets	(1,035)	(635)
Balance End of Period	35,673	36,938
Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	96	(352)
Liabilities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	3,413	3,028
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(81)	904
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	78	120
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	3,410	4,052
Liabilities | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	11	(29)
Policyholder contract deposits
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	3,033	2,289
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(45)	845
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	84	117
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	3,072	3,251
Policyholder contract deposits | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	(5)	22
Derivative liabilities, net
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	309	556
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(48)	57
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	19	4
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	280	617
Derivative liabilities, net | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	18	(49)
Interest rate contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	38	50
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(3)	4
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	(3)	(6)
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	32	48
Interest rate contracts | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	3	(4)
Foreign exchange contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	11	7
Net realized and unrealized gains and losses related to Level 3 items, liabilities	0	1
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	(5)	1
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	6	9
Foreign exchange contracts | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	0	(1)
Equity contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	(58)	(54)
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(11)	4
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	7	(1)
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	(62)	(51)
Equity contracts | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	5	(4)
Commodity contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	0	0
Net realized and unrealized gains and losses related to Level 3 items, liabilities	0	0
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	0	0
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	0	0
Commodity contracts | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	0	0
Credit contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	329	505
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(15)	(6)
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	1	(9)
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	315	490
Credit contracts | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	11	14
Other contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	(11)	48
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(19)	54
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	19	19
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	(11)	121
Other contracts | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	(1)	(54)
Long-term debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	71	183
Net realized and unrealized gains and losses related to Level 3 items, liabilities	12	2
Accumulated Other Comprehensive Income (loss)	0	0
Purchases, Sales, Issues and Settlements-Net	(25)	(1)
Gross Transfers in, liabilities	0	0
Gross Transfers out, liabilities	0	0
Balance at the End of the Period	58	184
Long-term debt | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	(2)	(2)
Bonds available for sale
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	29,971	28,817
Net Realized and Unrealized Gains (Losses) Included in Income	298	300
Other Comprehensive Income (Loss)	197	(526)
Purchases, Sales, Issues and Settlements, Net	(1,301)	167
Gross Transfers in, assets	144	177
Gross Transfers out, assets	(928)	(563)
Balance End of Period	28,381	28,372
Bonds available for sale | Obligations of states, municipalities and political subdivisions
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	2,040	2,124
Net Realized and Unrealized Gains (Losses) Included in Income	2	0
Other Comprehensive Income (Loss)	(4)	58
Purchases, Sales, Issues and Settlements, Net	21	14
Gross Transfers in, assets	0	0
Gross Transfers out, assets	(18)	0
Balance End of Period	2,041	2,196
Bonds available for sale | Non-U.S. government
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	17	32
Net Realized and Unrealized Gains (Losses) Included in Income	0	0
Other Comprehensive Income (Loss)	0	(2)
Purchases, Sales, Issues and Settlements, Net	(1)	0
Gross Transfers in, assets	0	0
Gross Transfers out, assets	0	0
Balance End of Period	16	30
Bonds available for sale | Corporate debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	1,133	1,370
Net Realized and Unrealized Gains (Losses) Included in Income	(4)	1
Other Comprehensive Income (Loss)	(3)	(24)
Purchases, Sales, Issues and Settlements, Net	(13)	29
Gross Transfers in, assets	136	121
Gross Transfers out, assets	(170)	(473)
Balance End of Period	1,079	1,024
Bonds available for sale | Residential mortgage-backed securities (RMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	16,906	16,537
Net Realized and Unrealized Gains (Losses) Included in Income	289	245
Other Comprehensive Income (Loss)	151	(420)
Purchases, Sales, Issues and Settlements, Net	(858)	(233)
Gross Transfers in, assets	8	33
Gross Transfers out, assets	(9)	0
Balance End of Period	16,487	16,162
Bonds available for sale | Commercial mortgage-backed securities (CMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	2,040	2,585
Net Realized and Unrealized Gains (Losses) Included in Income	5	42
Other Comprehensive Income (Loss)	5	(88)
Purchases, Sales, Issues and Settlements, Net	(348)	(81)
Gross Transfers in, assets	0	0
Gross Transfers out, assets	(699)	(90)
Balance End of Period	1,003	2,368
Bonds available for sale | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	7,835	6,169
Net Realized and Unrealized Gains (Losses) Included in Income	6	12
Other Comprehensive Income (Loss)	48	(50)
Purchases, Sales, Issues and Settlements, Net	(102)	438
Gross Transfers in, assets	0	23
Gross Transfers out, assets	(32)	0
Balance End of Period	7,755	6,592
Other bond securities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	7,480	8,846
Net Realized and Unrealized Gains (Losses) Included in Income	229	(171)
Other Comprehensive Income (Loss)	0	0
Purchases, Sales, Issues and Settlements, Net	(510)	(445)
Gross Transfers in, assets	0	65
Gross Transfers out, assets	(106)	(18)
Balance End of Period	7,093	8,277
Other bond securities | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	96	(352)
Other bond securities | Obligations of states, municipalities and political subdivisions
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Purchases, Sales, Issues and Settlements, Net	0	0
Other bond securities | Non-U.S. government
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Purchases, Sales, Issues and Settlements, Net	0	0
Other bond securities | Corporate debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	17
Net Realized and Unrealized Gains (Losses) Included in Income	1
Purchases, Sales, Issues and Settlements, Net	0	0
Gross Transfers in, assets	0	0
Balance End of Period	18	18
Other bond securities | Corporate debt | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	1
Other bond securities | Residential mortgage-backed securities (RMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	1,605	1,581
Net Realized and Unrealized Gains (Losses) Included in Income	55	(37)
Other Comprehensive Income (Loss)	0	0
Purchases, Sales, Issues and Settlements, Net	(125)	(13)
Gross Transfers in, assets	0	0
Gross Transfers out, assets	(33)	(18)
Balance End of Period	1,502	1,513
Other bond securities | Residential mortgage-backed securities (RMBS) | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	24	(45)
Other bond securities | Commercial mortgage-backed securities (CMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	155	193
Net Realized and Unrealized Gains (Losses) Included in Income	0	(2)
Other Comprehensive Income (Loss)	0	0
Purchases, Sales, Issues and Settlements, Net	(17)	(21)
Gross Transfers in, assets	0	0
Gross Transfers out, assets	(73)	0
Balance End of Period	65	170
Other bond securities | Commercial mortgage-backed securities (CMBS) | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	1	(2)
Other bond securities | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	5,703	7,055
Net Realized and Unrealized Gains (Losses) Included in Income	173	(133)
Other Comprehensive Income (Loss)	0	0
Purchases, Sales, Issues and Settlements, Net	(368)	(411)
Gross Transfers in, assets	0	65
Gross Transfers out, assets	0	0
Balance End of Period	5,508	6,576
Other bond securities | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS) | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	70	(306)
Equity securities available for sale
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	0	0
Net Realized and Unrealized Gains (Losses) Included in Income	0	0
Other Comprehensive Income (Loss)	0	0
Purchases, Sales, Issues and Settlements, Net	8	0
Gross Transfers in, assets	0	0
Gross Transfers out, assets	0	0
Balance End of Period	8	0
Equity securities available for sale | Common Stock
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	0	0
Net Realized and Unrealized Gains (Losses) Included in Income	0	0
Other Comprehensive Income (Loss)	0	0
Purchases, Sales, Issues and Settlements, Net	8	0
Gross Transfers in, assets	0	0
Gross Transfers out, assets	0	0
Balance End of Period	8	0
Mortgage and other loans receivable
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	11	11
Gross Transfers in, assets		0
Balance End of Period	11	11
Other invested assets
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	204	332
Net Realized and Unrealized Gains (Losses) Included in Income	(1)	11
Other Comprehensive Income (Loss)	(5)	(5)
Purchases, Sales, Issues and Settlements, Net	(17)	(21)
Gross Transfers in, assets	0	0
Gross Transfers out, assets	(1)	(54)
Balance End of Period	180	263
Other invested assets | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	0
Other equity securities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	0
Net Realized and Unrealized Gains (Losses) Included in Income	0	1
Purchases, Sales, Issues and Settlements, Net	0	0
Gross Transfers in, assets	0	0
Balance End of Period	0	15
Other equity securities | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	$ 0	$ 1