FAIR VALUE MEASUREMENTS (Details - Assets measured at fair value on a non-recurring basis at the time of impairment and the related impairment charges recorded during the periods presented) - Fair value on a non-recurring basis - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Impairment Charges	$ 159	$ 99
Other investments
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Impairment Charges	2	25
Investments in life settlements
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Impairment Charges	157	70
Other assets
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Impairment Charges	0	$ 4
Level 3 | Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Assets at Fair Value, Non-Recurring Basis	977		$ 2,074
Level 3 | Other investments
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Assets at Fair Value, Non-Recurring Basis	563		1,117
Level 3 | Investments in life settlements
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Assets at Fair Value, Non-Recurring Basis	405		828
Level 3 | Other assets
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Assets at Fair Value, Non-Recurring Basis	9		129
Total Fair Value | Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Assets at Fair Value, Non-Recurring Basis	977		2,074
Total Fair Value | Other investments
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Assets at Fair Value, Non-Recurring Basis	563		1,117
Total Fair Value | Investments in life settlements
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Assets at Fair Value, Non-Recurring Basis	405		828
Total Fair Value | Other assets
FAIR VALUE, ASSETS MEASUREMENTS ON A NON-RECURRING BASIS
Assets at Fair Value, Non-Recurring Basis	$ 9		$ 129