INSURANCE LIABILITIES (Details - Narratives) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Insurance Liabilities Disclosure [Line Items]
Gross Loss Reserves Before Reinsurance and Discount Net of Subrogation	$ 12,800	$ 12,600
Collateral Held For Deductible Recoverable Amounts	9,700	9,600
Liability for Claims and Claims Adjustment Expense	77,077	74,942	$ 77,260	$ 81,547
Net Loss Reserves	61,545	60,603	61,612	64,316
Reinsurance Recoverables				$ 17,231
Discounting Of Loss Reserves [Abstract]
Loss Reserve Discount	$ 3,570	3,148
Tabular Discount Rate	3.50%
Workers Compensation Tabular Discount Amount	$ 932
Workers Compensation Non Tabular Discount Amount	2,600
Increase (Decrease) in Loss Reserve Discount	$ 422	71	(478)
New York
Discounting Of Loss Reserves [Abstract]
Non Tabular Discount Rate	5.00%
Pennsylvania
Discounting Of Loss Reserves [Abstract]
Non Tabular Discount Rate	6.00%
NICO [Member]
Insurance Liabilities Disclosure [Line Items]
Reinsurance Recoverables Aggregate Limit	$ 0
Reinsurance, Additional Recoveries	0		0
U.S. Workers Compensation [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	1,920
Unlimited Losses Increase Decrease	440
Loss Reserve Increase	100
Discounting Of Loss Reserves [Abstract]
Increase (Decrease) in Loss Reserve Discount	406
U.S. Workers Compensation [Member] | Primary Workers Compensation Line Of Business [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development			113
U.S. Workers Compensation [Member] | Construction Line Of Business [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development			140
U.S. Excess Casualty [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	1,058	1,400	(106)
U.S. Excess Casualty [Member] | Commercial Auto Liability [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	250	411
U.S. Other Casualty
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	1,563
Loss Reserve Increase		214
U.S. Other Casualty | Commercial Auto Liability [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	352	105	156
U.S. Other Casualty | General Liability [Member]
Insurance Liabilities Disclosure [Line Items]
Unlimited Losses Increase Decrease	754	172
Loss Reserve Increase		100
U.S. Other Casualty | Medical Malpractice [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	428	202	57
U.S. Financial Lines [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	306	502	160
Europe Casualty and Financial Lines [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	355	139	24
Europe Casualty and Financial Lines [Member] | Europe Financial Lines [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	225
Europe Casualty and Financial Lines [Member] | Europe Casualty [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	100
U.S. and Europe [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	402	(128)
U.S. and Europe [Member] | Automobile Habitational And Professional Liability [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	350
U.S. and Europe [Member] | Habitational Liability [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	(62)
U.S. Europe and Japan [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	(114)
U.S. Europe and Japan [Member] | International Accident And Health Business [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	114	47	89
U.S. Europe and Japan [Member] | Natural Catastrophes [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	3	10	16
U.S. Long Tail Insurance Lines [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	390
U.S. Long Tail Insurance Lines [Member] | Asbestos And Environmental 1986 And Prior [Member]
Insurance Liabilities Disclosure [Line Items]
Prior Year Development	211
Loss Reserve Increase	(20)	164
Loss Reserve Increase Gross	106	13
Legacy Property And Casualty Run Off Insurance Lines [Member]
Discounting Of Loss Reserves [Abstract]
Loss Reserve Discount	987	971
Increase (Decrease) in Loss Reserve Discount	$ 16	$ 3	$ (407)