FAIR VALUE MEASUREMENTS (Details - Changes in Level 3 Recurring Fair Value Measurements) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	$ 35,673	$ 36,938	$ 37,666	$ 38,020
Net Realized and Unrealized Gains (Losses) Included in Income	505	373	1,031	514
Other Comprehensive Income (Loss)	575	313	767	(218)
Purchases, Sales, Issues and Settlements, Net	(684)	(96)	(2,504)	(395)
Gross Transfers in, assets	78	454	222	696
Gross Transfers out, assets	(110)	(406)	(1,145)	(1,041)
Reclassified to Assets Held for Sale	0		0
Balance End of Period	36,037	37,576	36,037	37,576
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	104	(69)	200	(414)
Liabilities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	3,410	4,052	3,413	3,028
Net realized and unrealized gains and losses related to Level 3 items, liabilities	300	544	219	1,448
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	123	52	201	172
Gross Transfers in, liabilities	(3)	0	(3)	0
Gross Transfers out, liabilities	0	(113)	0	(113)
Balance at the End of the Period	3,830	4,535	3,830	4,535
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	81	59	92	31
Policyholder contract deposits
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	3,072	3,251	3,033	2,289
Net realized and unrealized gains and losses related to Level 3 items, liabilities	340	598	295	1,443
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	106	141	190	258
Gross Transfers in, liabilities	0	0	0	0
Gross Transfers out, liabilities	0	0	0	0
Balance at the End of the Period	3,518	3,990	3,518	3,990
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	7	16	2	37
Derivative liabilities, net
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	280	617	309	556
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(42)	(52)	(90)	5
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	16	(87)	35	(83)
Gross Transfers in, liabilities	(3)	0	(3)	0
Gross Transfers out, liabilities	0	0	0	0
Balance at the End of the Period	251	478	251	478
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	76	43	94	(9)
Interest rate contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	32	48	38	50
Net realized and unrealized gains and losses related to Level 3 items, liabilities	2	3	(1)	7
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	(4)	(5)	(7)	(11)
Gross Transfers in, liabilities	0	0	0	0
Gross Transfers out, liabilities	0	0	0	0
Balance at the End of the Period	30	46	30	46
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	(1)	0	2	(5)
Foreign exchange contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	6	9	11	7
Net realized and unrealized gains and losses related to Level 3 items, liabilities	1	1	1	2
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	0	(1)	(5)	0
Gross Transfers in, liabilities	0	0	0	0
Gross Transfers out, liabilities	0	0	0	0
Balance at the End of the Period	7	9	7	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	(1)	(1)	(1)	(1)
Equity contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	(62)	(51)	(58)	(54)
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(4)	(4)	(15)	0
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	3	3	10	2
Gross Transfers in, liabilities	0	0	0	0
Gross Transfers out, liabilities	0	0	0	0
Balance at the End of the Period	(63)	(52)	(63)	(52)
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	9	3	14	0
Commodity contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	0	0	0	0
Net realized and unrealized gains and losses related to Level 3 items, liabilities	0	0	0	0
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	0	0	0	0
Gross Transfers in, liabilities	0	0	0	0
Gross Transfers out, liabilities	0	0	0	0
Balance at the End of the Period	0	0	0	0
Commodity contracts | Trading Revenue
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Purchases, Sales, Issues and Settlements-Net		0
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities	0	0	0	0
Credit contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	315	490	329	505
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(21)	(28)	(36)	(34)
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	(1)	(89)	0	(98)
Gross Transfers in, liabilities	0	0	0	0
Gross Transfers out, liabilities	0	0	0	0
Balance at the End of the Period	293	373	293	373
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	23	18	34	28
Other contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	(11)	121	(11)	48
Net realized and unrealized gains and losses related to Level 3 items, liabilities	(20)	(24)	(39)	30
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	18	5	37	24
Gross Transfers in, liabilities	(3)	0	(3)	0
Gross Transfers out, liabilities	0	0	0	0
Balance at the End of the Period	(16)	102	(16)	102
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	46	23	45	(31)
Long-term debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance at the Beginning of the Period	58	184	71	183
Net realized and unrealized gains and losses related to Level 3 items, liabilities	2	(2)	14	0
Accumulated Other Comprehensive Income (loss)	0	0	0	0
Purchases, Sales, Issues and Settlements-Net	1	(2)	(24)	(3)
Gross Transfers in, liabilities	0	0	0	0
Gross Transfers out, liabilities	0	(113)	0	(113)
Balance at the End of the Period	61	67	61	67
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)	0	(4)	3
Bonds available for sale
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	28,381	28,372	29,971	28,817
Net Realized and Unrealized Gains (Losses) Included in Income	258	262	556	562
Other Comprehensive Income (Loss)	573	307	770	(219)
Purchases, Sales, Issues and Settlements, Net	(219)	272	(1,520)	439
Gross Transfers in, assets	78	454	222	631
Gross Transfers out, assets	(109)	(341)	(1,037)	(904)
Reclassified to Assets Held for Sale	0		0
Balance End of Period	28,962	29,326	28,962	29,326
Bonds available for sale | 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	0	0	0
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	2,041	2,196	2,040	2,124
Net Realized and Unrealized Gains (Losses) Included in Income	(1)	2	1	2
Other Comprehensive Income (Loss)	89	136	85	194
Purchases, Sales, Issues and Settlements, Net	148	(21)	169	(7)
Gross Transfers in, assets	8	0	8	0
Gross Transfers out, assets	0	0	(18)	0
Balance End of Period	2,285	2,313	2,285	2,313
Bonds available for sale | Obligations of states, municipalities and political subdivisions | 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	0	0	0
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	16	30	17	32
Net Realized and Unrealized Gains (Losses) Included in Income	0	0	0	0
Other Comprehensive Income (Loss)	1	0	1	(2)
Purchases, Sales, Issues and Settlements, Net	(5)	2	(6)	2
Gross Transfers in, assets	0	0	0	0
Gross Transfers out, assets	0	(4)	0	(4)
Balance End of Period	12	28	12	28
Bonds available for sale | Non-U.S. government | 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	0	0	0
Bonds available for sale | Corporate debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	1,079	1,024	1,133	1,370
Net Realized and Unrealized Gains (Losses) Included in Income	5	2	1	3
Other Comprehensive Income (Loss)	3	7	0	(17)
Purchases, Sales, Issues and Settlements, Net	(153)	(65)	(166)	(36)
Gross Transfers in, assets	70	193	206	314
Gross Transfers out, assets	(72)	(325)	(242)	(798)
Reclassified to Assets Held for Sale	0		0
Balance End of Period	932	836	932	836
Bonds available for sale | 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	0	0	0	0
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	16,487	16,162	16,906	16,537
Net Realized and Unrealized Gains (Losses) Included in Income	264	234	553	479
Other Comprehensive Income (Loss)	346	61	497	(359)
Purchases, Sales, Issues and Settlements, Net	(681)	61	(1,539)	(172)
Gross Transfers in, assets	0	261	8	294
Gross Transfers out, assets	(23)	0	(32)	0
Balance End of Period	16,393	16,779	16,393	16,779
Bonds available for sale | 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	0	0	0	0
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	1,003	2,368	2,040	2,585
Net Realized and Unrealized Gains (Losses) Included in Income	18	16	23	58
Other Comprehensive Income (Loss)	2	10	7	(78)
Purchases, Sales, Issues and Settlements, Net	(274)	(87)	(622)	(168)
Gross Transfers in, assets	0	0	0	0
Gross Transfers out, assets	(14)	(12)	(713)	(102)
Reclassified to Assets Held for Sale	0		0
Balance End of Period	735	2,295	735	2,295
Bonds available for sale | 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	0	0	0	0
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	7,755	6,592	7,835	6,169
Net Realized and Unrealized Gains (Losses) Included in Income	(28)	8	(22)	20
Other Comprehensive Income (Loss)	132	93	180	43
Purchases, Sales, Issues and Settlements, Net	746	382	644	820
Gross Transfers in, assets	0	0	0	23
Gross Transfers out, assets	0	0	(32)	0
Reclassified to Assets Held for Sale	0		0
Balance End of Period	8,605	7,075	8,605	7,075
Bonds available for sale | 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	0	0	0	0
Other bond securities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	7,093	8,277	7,480	8,846
Net Realized and Unrealized Gains (Losses) Included in Income	243	124	472	(47)
Other Comprehensive Income (Loss)	0	0	0	0
Purchases, Sales, Issues and Settlements, Net	(498)	(352)	(1,008)	(797)
Gross Transfers in, assets	0	0	0	65
Gross Transfers out, assets	0	(65)	(106)	(83)
Balance End of Period	6,838	7,984	6,838	7,984
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	100	(69)	196	(415)
Other bond securities | Corporate debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	18	18	17	17
Net Realized and Unrealized Gains (Losses) Included in Income	0	1	1	2
Other Comprehensive Income (Loss)	0	0	0	0
Purchases, Sales, Issues and Settlements, Net	10	(1)	10	(1)
Gross Transfers in, assets	0	0	0	0
Balance End of Period	28	18	28	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	0	1	1	3
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	1,502	1,513	1,605	1,581
Net Realized and Unrealized Gains (Losses) Included in Income	66	14	121	(23)
Other Comprehensive Income (Loss)	0	0	0	0
Purchases, Sales, Issues and Settlements, Net	(58)	(41)	(183)	(54)
Gross Transfers in, assets	0	0	0	0
Gross Transfers out, assets	0	0	(33)	(18)
Balance End of Period	1,510	1,486	1,510	1,486
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	43	(19)	67	(61)
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	65	170	155	193
Net Realized and Unrealized Gains (Losses) Included in Income	2	0	2	(2)
Other Comprehensive Income (Loss)	0	0	0	0
Purchases, Sales, Issues and Settlements, Net	(1)	(2)	(18)	(23)
Gross Transfers in, assets	0	0	0	0
Gross Transfers out, assets	0	0	(73)	0
Balance End of Period	66	168	66	168
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	2	9	3	7
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	5,508	6,576	5,703	7,055
Net Realized and Unrealized Gains (Losses) Included in Income	175	109	348	(24)
Other Comprehensive Income (Loss)	0	0	0	0
Purchases, Sales, Issues and Settlements, Net	(449)	(308)	(817)	(719)
Gross Transfers in, assets	0	0	0	65
Gross Transfers out, assets	0	(65)	0	(65)
Balance End of Period	5,234	6,312	5,234	6,312
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	55	(60)	125	(364)
Equity securities available for sale
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	8	0	0	0
Net Realized and Unrealized Gains (Losses) Included in Income	0	0	0	0
Other Comprehensive Income (Loss)	0	0	0	0
Purchases, Sales, Issues and Settlements, Net	0	0	8	0
Gross Transfers in, assets	0	0	0	0
Gross Transfers out, assets	(1)	0	(1)	0
Balance End of Period	7	0	7	0
Equity securities available for sale | 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	0	0	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	8	0	0	0
Net Realized and Unrealized Gains (Losses) Included in Income	0	0	0	0
Other Comprehensive Income (Loss)	0	0	0	0
Purchases, Sales, Issues and Settlements, Net	0	0	8	0
Gross Transfers in, assets	0	0	0	0
Gross Transfers out, assets	(1)	0	(1)	0
Balance End of Period	7	0	7	0
Equity securities available for sale | Common Stock | 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	0	0	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	11	11
Purchases, Sales, Issues and Settlements, Net	(6)	0	(6)	0
Gross Transfers out, assets	0		0
Balance End of Period	5	11	5	11
Other invested assets
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	180	263	204	332
Net Realized and Unrealized Gains (Losses) Included in Income	4	(12)	3	(1)
Other Comprehensive Income (Loss)	2	6	(3)	1
Purchases, Sales, Issues and Settlements, Net	39	(16)	22	(37)
Gross Transfers in, assets	0	0	0	0
Gross Transfers out, assets	0	0	(1)	(54)
Balance End of Period	225	241	225	241
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	4		4
Other equity securities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	0	15	0	14
Net Realized and Unrealized Gains (Losses) Included in Income	0	(1)		0
Purchases, Sales, Issues and Settlements, Net	0		0
Gross Transfers in, assets			0	0
Balance End of Period	$ 0	$ 14	0	14
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