RETIREMENT BENEFITS - Discount Rate and Expected Rate of Return (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Expected return on assets (as a percent)	6.80%	7.00%
Expected return on plan assets	$ 886	$ 893	$ 878
Expected return on assets (as a percent)	7.00%	7.00%	7.00%
Actual return on plan assets	$ 967
Non-U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Expected return on plan assets	$ 287	$ 323	$ 384
U.S. pension and postretirement benefit plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Expected return on assets (as a percent)	6.80%	7.00%	7.00%
Expected return on assets (as a percent)	7.00%	7.00%	7.00%
Actual rate of return (as a percent)	4.90%	(1.70%)	7.80%
Top 5 Non-US Countries \| U.S. pension and postretirement benefit plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Discount rate established rounding convention	0.005
JAPAN \| U.S. pension and postretirement benefit plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Discount rate established rounding convention	0.01
All Other Countries \| U.S. pension and postretirement benefit plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Discount rate established rounding convention	0.025

Represents the percentage actual rate of return on asset under defined benefit plan.

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, other expenses and the cumulative effect of changes in accounting policy, as applicable.

+ References

No definition available.

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- Definition

Represents the expected long-term rate of return on assets used in determining the entity's benefit obligation.

+ References

No definition available.

+ Details

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- Definition

Defined Benefit Plan, Discount Rate, Established Rounding Convention

+ References

No definition available.

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512171

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)(3)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

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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