FAIR VALUE MEASUREMENTS (Details - Gains or losses recorded related to the eligible instruments for which we elected the fair value option) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option credit risk gains (losses) on liabilities	$ 4	$ 22	$ (4)
Fair Value Option
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Options Changes in Fair Value Gain (loss)	2,105	466	613
Fair Value Option \| Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option credit risk gains (losses) on liabilities	(49)	(9)	(38)
Fair Value Option \| Other liabilities
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value option credit risk gains (losses) on liabilities	(2)	0	(3)
Fair Value Option \| Bond and equity securities
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Options Changes in Fair Value Gain (loss)	1,646	447	616
Fair Value Option \| Alternative investments
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Options Changes in Fair Value Gain (loss)	509	28	36
Fair Value Option \| Other, Including Short Term Investments
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Options Changes in Fair Value Gain (loss)	$ 1	$ 0	$ 2

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612

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This item represents the estimated amount of gains and losses from fair value changes included in earnings that are attributable to changes in the instrument-specific credit risk of liabilities with fair values that have been significantly affected during the reporting period by changes in the instrument-specific credit risk.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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