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) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	$ 809	$ 342	$ 1,114
Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	189	134	112
Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	540	201	971
Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	80	7	$ 31
Fair value on a non-recurring basis | Level 1 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	0	0
Fair value on a non-recurring basis | Level 1 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	0	0
Fair value on a non-recurring basis | Level 1 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	0	0
Fair value on a non-recurring basis | Level 2 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	0	0
Fair value on a non-recurring basis | Level 2 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	0	0
Fair value on a non-recurring basis | Level 2 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	0	0
Fair value on a non-recurring basis | Level 3 | Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	2,074	1,328
Fair value on a non-recurring basis | Level 3 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	1,117	790
Fair value on a non-recurring basis | Level 3 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	828	537
Fair value on a non-recurring basis | Level 3 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	129	1
Fair value on a non-recurring basis | Total Fair Value | Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	2,074	1,328
Fair value on a non-recurring basis | Total Fair Value | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	1,117	790
Fair value on a non-recurring basis | Total Fair Value | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	828	537
Fair value on a non-recurring basis | Total Fair Value | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Assets at Fair Value, Non-Recurring Basis	$ 129	$ 1