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Self-Insurance (Tables)
12 Months Ended
Dec. 31, 2016
Insurance [Abstract]  
Current and long-term self-insurance liabilities
At December 31, 2016 and 2015, current and long-term self-insurance liabilities were included in Other Current Liabilities and Other Liabilities, respectively, in the Consolidated Balance Sheets as follows:
 
2016
 
2015
Self-insurance - current portion
$
27.2

 
$
27.2

Self-insurance - long-term portion
48.7

 
47.6

Total self-insurance liabilities
$
75.9

 
$
74.8