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, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2017
Fair Value Assets Impairment Charges Measured on Nonrecurring Basis [Domain]
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	$ 330	$ 326
Impairment Charges	150	161	$ 594
Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	329	315
Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0	0
Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	1	11
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
Level 1 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 1 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 1 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	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
Level 2 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 2 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 2 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	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	330	326
Level 3 | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	329	315
Level 3 | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 3 | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value	1	11
Fair value on a non-recurring basis | Other investments
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	76	97	77
Fair value on a non-recurring basis | Investments in life settlements
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	0	0	360
Fair value on a non-recurring basis | Other assets
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Impairment Charges	$ 74	$ 64	157
Fair value on a non-recurring basis | Other assets | Divested Businesses
Fair Value Assets Measured on Nonrecurring Basis [Line Items]
Fair Value				$ 179
Impairment Charges			$ 35