RETIREMENT BENEFITS - Sensitivities of Certain Key Assumptions (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase in discount rates	$ 26	$ 28	$ 16
Effect of one-percentage-point decrease in discount rates	(44)	(45)	(57)
Effect of one-percentage-point increase on benefits earned and interest cost for U.S. postretirement plans	(128)	(129)	(123)
Effect of one-percentage-point decrease on benefits earned and interest cost for U.S. postretirement plans	128	129	123
Non-U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase in discount rates	(32)	(39)	(52)
Effect of one-percentage-point decrease in discount rates	44	56	79
Effect of one-percentage-point increase on benefits earned and interest cost for U.S. postretirement plans	(63)	(67)	(68)
Effect of one-percentage-point decrease on benefits earned and interest cost for U.S. postretirement plans	63	67	$ 68
U.S. Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase of benefits earned and interest cost for U.S. postretirement plans	2	2
Effect of one-percentage-point decrease on benefits earned and interest cost for U.S. postretirement plans	(2)	(1)
Effect of one-percentage-point increase on accumulated postretirement benefit obligation for U.S. postretirement plans	45	40
Effect of one-percentage-point decrease on accumulated postretirement benefit obligation for U.S. postretirement plans	(38)	(34)
Non-U.S. Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase of benefits earned and interest cost for U.S. postretirement plans	15	17
Effect of one-percentage-point decrease on benefits earned and interest cost for U.S. postretirement plans	(12)	(14)
Effect of one-percentage-point increase on accumulated postretirement benefit obligation for U.S. postretirement plans	156	197
Effect of one-percentage-point decrease on accumulated postretirement benefit obligation for U.S. postretirement plans	$ (128)	$ (161)

The effect of a one-percentage-point decrease in the discount rates on pension expenses.

No definition available.

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- Definition

The effect of a one-percentage-point decrease in the expected rates of return on pension expenses.

+ References

No definition available.

+ Details

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- Definition

The effect of a one-percentage-point increase in the discount rates on pension expenses.

+ References

No definition available.

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- Definition

The effect of a one-percentage-point increase in the expected rates of return on pension expenses.

+ References

No definition available.

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ References

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

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ References

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

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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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