RETIREMENT BENEFITS - Contributions (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014
U.S. Pension Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Total Company contributions		$ 33	$ 139
Estimated total company contributions		12	12
Non - U.S. Pension Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Total Company contributions		85	164
Estimated total company contributions		47	43
U.S. Postretirement Benefit Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Total Company contributions	$ 174	217	34
Estimated total company contributions		15	17
Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Total Company contributions		7	2
Estimated total company contributions		$ 3	$ 10