Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2024

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

16. Supplemental Cash Flow Information

	Year Ended December 31,
	2024		2023		2022
	(in millions of dollars)
Interest paid	$	40.5	$	43.8	$	45.7
Non-cash investing and financing activities (included in Accounts payable):
Unpaid purchases of property and equipment	$	19.6	$	19.3	$	28.9
Supplemental lease disclosures:
Operating lease liabilities arising from obtaining operating lease assets	$	2.6	$	3.2	$	3.1
Cash paid for amounts included in the measurement of    operating lease liabilities	$	8.2	$	9.3	$	9.8
Finance lease liabilities arising from obtaining finance lease assets	$	2.9	$	10.0	$	1.0
	As of December 31,
	2024		2023		2022
	(in millions of dollars)
Components of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$	18.4	$	82.4	$	57.4
Restricted cash included in Other assets		19.5		18.3		13.9
Total cash, cash equivalents and restricted cash presented on our Statements of    Consolidated Cash Flows	$	37.9	$	100.7	$	71.3