RETIREMENT BENEFITS - Assumptions Used (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
U.S. Qualified Pension Plan
Plan Assumptions - During the year
Discount rate	4.10%	4.40%	3.55%
Plan Assumptions - At year end
Discount rate	4.05%		4.10%
U.S. Nonqualified Pension Plan
Plan Assumptions - During the year
Discount rate	4.00%	4.35%	3.45%
Plan Assumptions - At year end
Discount rate	3.95%		4.00%
U.S. Postretirement Benefit Plans
Plan Assumptions - During the year
Discount rate	3.90%	4.20%	3.30%
Plan Assumptions - At year end
Discount rate	3.85%		3.90%
Non-U.S. Pension Plans | Weighted Average
Plan Assumptions - During the year
Discount rate	5.08%	5.37%	4.42%
Plan Assumptions - At year end
Discount rate	4.83%		5.08%
Non-U.S. Pension Plans | Minimum
Plan Assumptions - During the year
Discount rate	0.60%	0.75%	0.20%
Plan Assumptions - At year end
Discount rate	0.55%		0.60%
Non-U.S. Pension Plans | Maximum
Plan Assumptions - During the year
Discount rate	11.00%	13.20%	11.55%
Plan Assumptions - At year end
Discount rate	10.45%		11.00%
Non-U.S. Postretirement Benefit Plans
Plan Assumptions - During the year
Discount rate	9.65%	8.60%	8.25%
Plan Assumptions - At year end
Discount rate	9.25%		9.65%