Other long-term liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Other long-term liabilities

Schedule of other long-term liabilities

	2020		2019
Long-term contract liability	$	0.2	$	0.2
Net pension liability		3.1		1.2
Accrued LTIP and director share units		1.5		1.6
Other		1.4		1.7
	$	6.2	$	4.7

Rollforward of asset retirement obligations

	2020		2019
Asset retirement obligations beginning of year	$	51.5	$	49.2
Accretion and change in estimate of asset retirement obligation		(1.3)		2.3
Costs incurred		(2.5)		(1.0)
Translation adjustments		0.4		1.0
Asset retirement obligations, end of year	$	48.1	$	51.5