Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2017

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Quarter Ended
	March 31,
	2017		2016
	(In millions of dollars)
Interest paid	$	0.3	$	0.3
Non-cash investing and financing activities (included in Accounts payable):
Unpaid purchases of property and equipment	$	3.7	$	2.0
Stock repurchases not yet settled	$	2.0	$	0.1
Cash and cash equivalents	$	34.4	$	70.7
Restricted cash included in Prepaid expenses and other current assets	0.3		0.3
Restricted cash included in Other assets	12.0		10.9
Total cash, cash equivalents and restricted cash shown in the Statements of Consolidated Cash Flows	$	46.7	$	81.9