Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Six Months Ended
	June 30,
	2015		2014
	(In millions of dollars)
Interest paid	$	13.3	$	12.1
Non-cash investing and financing activities:
Stock repurchases not yet settled (accrued in accounts payable)	$	0.1	$	0.3
Unpaid purchases of property and equipment	$	3.8	$	1.1