EMPLOYEE BENEFITS (Details - Changes in Level 3 fair value measurements) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Changes in Level 3 fair value measurements
Purchases	$ 5,990	$ 8,678
Sales	(1,600)	(554)
Settlements	(6,735)	(6,959)
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	(129)	298
U.S. Pension Plans
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	4,111	4,024
Net Realized and Unrealized Gains (Losses)	(8)	266
Fair value of plan assets, end of year	4,359	4,111
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	270
U.S. Pension Plans \| Hedge funds:
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	373
Fair value of plan assets, end of year	500	373
U.S. Pension Plans \| Fixed maturity securities: Mortgage and other asset-backed securities
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	6
Fair value of plan assets, end of year	7	6
U.S. Pension Plans \| Private equity funds:
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	228
Fair value of plan assets, end of year	230	228
U.S. Pension Plans \| Insurance contracts
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	26
Fair value of plan assets, end of year	23	26
U.S. Pension Plans \| Level 3
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	272	292
Net Realized and Unrealized Gains (Losses)	(1)	16
Purchases	114	106
Sales	(108)	(157)
Settlements	0	0
Transfers In	8	15
Transfers Out	(15)	0
Fair value of plan assets, end of year	270	272
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	3	10
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	8	9
Net Realized and Unrealized Gains (Losses)	(1)	2
Purchases	17	18
Sales	(15)	(21)
Settlements	0	0
Transfers In	0	0
Transfers Out	0	0
Fair value of plan assets, end of year	9	8
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	(1)	1
U.S. Pension Plans \| Level 3 \| Hedge funds:
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	36	35
Net Realized and Unrealized Gains (Losses)	1	3
Purchases	11	15
Sales	(10)	(32)
Settlements	0	0
Transfers In	8	15
Transfers Out	(15)	0
Fair value of plan assets, end of year	31	36
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	(1)	(1)
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	228	248
Net Realized and Unrealized Gains (Losses)	(1)	11
Purchases	86	73
Sales	(83)	(104)
Settlements	0	0
Transfers In	0	0
Transfers Out	0	0
Fair value of plan assets, end of year	230	228
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year	5	10
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	708	738
Net Realized and Unrealized Gains (Losses)	47	71
Fair value of plan assets, end of year	773	708
Non U.S. Pension Plans \| Insurance contracts
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	56
Fair value of plan assets, end of year	95	56
Non U.S. Pension Plans \| Level 3
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	73	63
Net Realized and Unrealized Gains (Losses)	(8)	9
Purchases	1	3
Sales	0	(2)
Settlements	0	0
Transfers In	53	0
Transfers Out	(24)	0
Fair value of plan assets, end of year	95	73
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	17	19
Net Realized and Unrealized Gains (Losses)	(1)	0
Purchases	0	0
Sales	0	(2)
Settlements	0	0
Transfers In	0	0
Transfers Out	(16)	0
Fair value of plan assets, end of year	0	17
Non U.S. Pension Plans \| Level 3 \| Insurance contracts
Changes in Level 3 fair value measurements
Fair value of plan assets, beginning of year	56	44
Net Realized and Unrealized Gains (Losses)	(7)	9
Purchases	1	3
Sales	0	0
Settlements	0	0
Transfers In	53	0
Transfers Out	(8)	0
Fair value of plan assets, end of year	$ 95	$ 56

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

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- Definition

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6504226

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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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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

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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)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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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

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

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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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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