EMPLOYEE BENEFITS (Details - Changes in Level 3 fair value measurements) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Changes in Level 3 fair value measurements
Purchases	$ 5,974	$ 5,355
Sales	(971)	(1,600)
Settlements	(6,278)	(6,218)
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	(410)	(129)
U.S. Pension Plans
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	4,359	4,111
Net Realized and Unrealized Gains (Losses)	154	(8)
Fair value of plan assets, end of year	3,843	4,359
U.S. Pension Plans \| Fixed maturity securities: U.S. investment grade
Changes in Level 3 fair value measurements
Fair value of plan assets, end of year	26
U.S. Pension Plans \| Level 3
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	37	25
Net Realized and Unrealized Gains (Losses)	(3)	1
Purchases	6	27
Sales	(14)	(16)
Settlements	0	0
Transfers In	0	0
Transfers Out	0	0
Fair value of plan assets, end of year	26	37
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	(4)	2
U.S. Pension Plans \| Level 3 \| Fixed maturity securities: U.S. investment grade
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	9	8
Net Realized and Unrealized Gains (Losses)	1	(1)
Purchases	2	17
Sales	(10)	(15)
Settlements	0	0
Transfers In	0	0
Transfers Out	0	0
Fair value of plan assets, end of year	2	9
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	0	0
U.S. Pension Plans \| Level 3 \| Hedge funds:
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	0	0
Net Realized and Unrealized Gains (Losses)	0	0
Purchases	0	0
Sales	0	0
Settlements	0	0
Transfers In	0	0
Transfers Out	0	0
Fair value of plan assets, end of year	0	0
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	0	0
U.S. Pension Plans \| Level 3 \| Fixed maturity securities: Mortgage and other asset-backed securities
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	0
Fair value of plan assets, end of year	0	0
U.S. Pension Plans \| Level 3 \| Private equity funds
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	28	17
Net Realized and Unrealized Gains (Losses)	(4)	2
Purchases	4	10
Sales	(4)	(1)
Settlements	0	0
Transfers In	0	0
Transfers Out	0	0
Fair value of plan assets, end of year	24	28
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	(4)	2
U.S. Pension Plans \| Level 3 \| Insurance contracts
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	0
Fair value of plan assets, end of year	0	0
Non U.S. Pension Plans
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	773	708
Net Realized and Unrealized Gains (Losses)	19	47
Fair value of plan assets, end of year	803	773
Non U.S. Pension Plans \| Level 3
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	95	73
Net Realized and Unrealized Gains (Losses)	12	(8)
Purchases	1	1
Sales	0	0
Settlements	0	0
Transfers In	2	53
Transfers Out	(2)	(24)
Fair value of plan assets, end of year	108	95
Non U.S. Pension Plans \| Level 3 \| Other fixed income securities
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	0	17
Net Realized and Unrealized Gains (Losses)	0	(1)
Purchases	0	0
Sales	0	0
Settlements	0	0
Transfers In	0	0
Transfers Out	0	(16)
Fair value of plan assets, end of year	0	0
Non U.S. Pension Plans \| Level 3 \| Insurance contracts
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	95	56
Net Realized and Unrealized Gains (Losses)	12	(7)
Purchases	1	1
Sales	0	0
Settlements	0	0
Transfers In	2	53
Transfers Out	(2)	(8)
Fair value of plan assets, end of year	$ 108	$ 95

Transfers in to Level 3. For example, transfers due to changes in the observability of significant inputs.

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Transfers out of Level 3. For example, transfers due to changes in the observability of significant inputs.

+ References

No definition available.

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- Definition

The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost)
-URI http://asc.fasb.org/extlink&oid=6504192

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost)
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 30
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- Definition

Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
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- Definition

Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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