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ACCRUED LIABILITIES (Tables)
12 Months Ended
Dec. 31, 2016
Accrued Liabilities, Current [Abstract]  
Accrued liabilities
Accrued liabilities at December 31 consisted of the following (in millions):
 
2016
 
2015
Pension and other postretirement benefits
$
32.1

 
$
31.4

Compensation and related employee costs
62.4

 
73.6

Interest
33.6

 
44.3

Income taxes
18.3

 
23.9

Other
12.4

 
12.8

Total accrued liabilities
$
158.8

 
$
186.0