RETIREMENT BENEFITS - Assumptions Used (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
U.S. Qualified Pension Plan
Plan Assumptions - During the year
Discount rate (as a percent)	4.00%	4.25%
Plan Assumptions - At year end
Discount rate (as a percent)	3.85%	4.00%
U.S. Nonqualified Pension Plan
Plan Assumptions - During the year
Discount rate (as a percent)	3.90%	4.75%
Plan Assumptions - At year end
Discount rate (as a percent)	3.70%	3.90%
U.S. Postretirement Benefit Plans
Plan Assumptions - During the year
Discount rate (as a percent)	3.80%	4.00%
Plan Assumptions - At year end
Discount rate (as a percent)	3.65%	3.80%
Non - U.S. Pension Plans | Minimum
Plan Assumptions - During the year
Discount rate (as a percent)	1.00%	2.20%
Plan Assumptions - At year end
Discount rate (as a percent)	0.70%	1.00%
Non - U.S. Pension Plans | Maximum
Plan Assumptions - During the year
Discount rate (as a percent)	12.00%	11.90%
Plan Assumptions - At year end
Discount rate (as a percent)	12.25%	12.00%
Non - U.S. Pension Plans | Weighted Average
Plan Assumptions - During the year
Discount rate (as a percent)	5.44%	6.02%
Plan Assumptions - At year end
Discount rate (as a percent)	5.14%	5.44%
Non-U.S. Postretirement Benefit Plans
Plan Assumptions - During the year
Discount rate (as a percent)	8.00%	8.70%
Plan Assumptions - At year end
Discount rate (as a percent)	8.00%	8.00%