Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Nine Months Ended
	September 30,
	2015		2014
	(In millions of dollars)
Interest paid	$	13.5	$	12.2
Non-cash investing and financing activities:
Stock repurchases not yet settled (accrued in accounts payable)	$	0.3	$	0.2
Unpaid purchases of property and equipment	$	4.4	$	1.8