FAIR VALUE MEASUREMENTS (Details - Gains or losses recorded related to the eligible instruments for which we elected the fair value option) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	$ 330	$ 341	$ (72)	$ 866
Bonds
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	374	283	314	638
Alternative investments
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	(26)	151	(165)	381
Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	$ (18)	$ (93)	$ (221)	$ (153)