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		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	$ 596	$ 350	$ 524	$ 1,216
Bonds
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	171	333	485	971
Alternative investments
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	407	92	242	473
Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	$ 18	$ (75)	$ (203)	$ (228)