Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2016

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Nine Months Ended
	September 30,
	2016		2015
	(In millions of dollars)
Interest paid	$	6.7	$	13.5
Non-cash investing and financing activities:
Stock repurchases not yet settled (accrued in accounts payable)	$	0.2	$	0.3
Unpaid purchases of property and equipment	$	2.4	$	4.4