RETIREMENT BENEFITS - Contributions (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
U.S. Pension Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Company contributions for the six months ended June 30,	$ 28	$ 22
Company contributions made or expected to be made during the remainder of the year	26	30
Non-U.S. Pension Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Company contributions for the six months ended June 30,	58	29
Company contributions made or expected to be made during the remainder of the year	78	105
U.S. Postretirement Benefit Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Company contributions for the six months ended June 30,	11	32
Company contributions made or expected to be made during the remainder of the year	0	203
Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Company contributions for the six months ended June 30,	3	5
Company contributions made or expected to be made during the remainder of the year	$ 5	$ 4