XML 36 R22.htm IDEA: XBRL DOCUMENT v3.3.1.900
Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2015
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information
Supplemental Cash Flow Information
 
Year Ended December 31,
 
2015
 
2014
 
2013
 
(in millions of dollars)
Interest paid
$
22.1

 
$
25.6

 
$
28.1

Non-cash investing and financing activities:
 
 
 
 
 
Stock repurchases not yet settled (accrued in accounts payable)
$
0.2

 
$
0.8

 
$
1.0

Unpaid purchases of property and equipment
$
10.5

 
$
1.8

 
$
4.4

Purchases of property and equipment through capital leasing arrangements
$
—

 
$
—

 
$
0.2