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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	$ 350	$ 259	$ 1,216	$ 703
Bond and equity securities
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	333	122	971	274
Alternative investments
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	92	131	473	355
Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option gain (loss)	$ (75)	$ 6	$ (228)	$ 74