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		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	$ 34	$ 299	$ 124	$ 471
Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	0	26	89	76
Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	0	273	0	360
Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	34	0	35	35
Level 1 | Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		$ 0
Level 1 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Level 1 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Level 1 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Level 2 | Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Level 2 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Level 2 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Level 2 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Level 3 | Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	346		346		55
Level 3 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	344		344		55
Level 3 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Level 3 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	2		2		0
Total Fair Value | Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	346		346		55
Total Fair Value | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	344		344		55
Total Fair Value | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0		0		0
Total Fair Value | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	$ 2		$ 2		$ 0
Total Fair Value | Other assets | Divested Businesses
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value		$ 179		$ 179