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RESTRUCTURING RESERVES - Restructuring Activities Incurred, Net of Gains (Details)
$ in Thousands
Sep. 30, 2017
USD ($)
Restructuring Cost and Reserve [Line Items]  
Cumulative amount incurred to date $ 129,623
Total amount expected 11,270
UNITED STATES [Member]  
Restructuring Cost and Reserve [Line Items]  
Cumulative amount incurred to date 61,814
Total amount expected 0
CANADA [Member]  
Restructuring Cost and Reserve [Line Items]  
Cumulative amount incurred to date 26,509
Total amount expected 11,270
Other Businesses [Member]  
Restructuring Cost and Reserve [Line Items]  
Cumulative amount incurred to date 41,300
Total amount expected $ 0