XML 146 R86.htm IDEA: XBRL DOCUMENT v3.8.0.1
OTHER LIABILITIES - Significant weighted average assumptions (Details)
Dec. 31, 2017
Jan. 01, 2017
Dec. 31, 2016
Dec. 31, 2015
Executives Plan        
Significant weighted average assumptions        
Discount rate (as a percent) 3.30%   3.80% 4.00%
Rate of compensation increase 3.00%   3.00%  
Retirement Program        
Significant weighted average assumptions        
Discount rate (as a percent) 3.00% 3.25%