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RETIREMENT BENEFITS - Assumptions Used (Details)
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
U.S. Pension Plans                            
Plan Assumptions - At year end                            
Expected return on assets (as a percent) 7.00%       7.00%             7.00% 7.00%  
Plan Assumptions - During the year                            
Expected return on assets (as a percent)                       7.00% 7.00% 7.00%
U.S. Qualified Pension Plan                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 4.40%       4.00%             4.40% 4.00%  
Plan Assumptions - During the year                            
Discount rate (as a percent) 4.35% 4.45% 3.85% 4.00% 4.25% 4.25% 4.55% 4.75% 4.75% 4.20% 3.90%     4.80%
U.S. Nonqualified Pension Plan                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 4.35%       3.90%             4.35% 3.90%  
Plan Assumptions - During the year                            
Discount rate (as a percent) 4.25% 4.30% 3.70% 3.90%                 4.75% 3.90%
U.S. Postretirement Benefit Plans                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 4.20%       3.80%             4.20% 3.80%  
Plan Assumptions - During the year                            
Discount rate (as a percent) 4.10% 4.20% 3.65% 3.80% 4.00% 3.95% 4.15% 4.35% 4.40% 3.60% 3.60%     4.30%
Non-U.S. Pension Plans | Weighted Average                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 4.76%       4.74%             4.76% 4.74%  
Future compensation increase rate (as a percent) 3.24%       3.27%             3.24% 3.27%  
Expected return on assets (as a percent) 4.95%       5.08%             4.95% 5.08%  
Plan Assumptions - During the year                            
Discount rate (as a percent)                       4.74% 5.60% 5.24%
Future compensation increase rate (as a percent)                       3.27% 3.40% 3.93%
Expected return on assets (as a percent)                       5.08% 5.68% 5.76%
Non-U.S. Pension Plans | Minimum                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 0.25%       1.00%             0.25% 1.00%  
Future compensation increase rate (as a percent) 1.00%       1.00%             1.00% 1.00%  
Expected return on assets (as a percent) 1.60%       1.30%             1.60% 1.30%  
Plan Assumptions - During the year                            
Discount rate (as a percent)                       1.00% 1.60% 1.50%
Future compensation increase rate (as a percent)                       1.00% 1.00% 1.20%
Expected return on assets (as a percent)                       1.30% 1.20% 0.90%
Non-U.S. Pension Plans | Maximum                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 42.00%       32.50%             42.00% 32.50%  
Future compensation increase rate (as a percent) 40.00%       30.00%             40.00% 30.00%  
Expected return on assets (as a percent) 11.50%       11.50%             11.50% 11.50%  
Plan Assumptions - During the year                            
Discount rate (as a percent)                       32.50% 29.25% 28.00%
Future compensation increase rate (as a percent)                       30.00% 26.00% 26.00%
Expected return on assets (as a percent)                       11.50% 11.50% 11.50%
Non-U.S. Postretirement Benefit Plans | Weighted Average                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 7.90%       7.50%             7.90% 7.50%  
Expected return on assets (as a percent) 8.01%       8.51%             8.01% 8.51%  
Plan Assumptions - During the year                            
Discount rate (as a percent)                       7.50% 8.65% 7.46%
Expected return on assets (as a percent)                       8.51% 8.50% 8.50%
Non-U.S. Postretirement Benefit Plans | Minimum                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 2.00%       2.25%             2.00% 2.25%  
Expected return on assets (as a percent) 8.00%       8.50%             8.00% 8.50%  
Plan Assumptions - During the year                            
Discount rate (as a percent)                       2.25% 3.50% 3.50%
Expected return on assets (as a percent)                       8.50% 8.50% 8.50%
Non-U.S. Postretirement Benefit Plans | Maximum                            
Plan Assumptions - At year end                            
Discount rate (as a percent) 13.20%       12.00%             13.20% 12.00%  
Expected return on assets (as a percent) 10.70%       10.40%             10.70% 10.40%  
Plan Assumptions - During the year                            
Discount rate (as a percent)                       12.00% 11.90% 10.00%
Expected return on assets (as a percent)                       10.40% 8.90% 9.60%