Segment reporting (Tables)

9 Months Ended

Sep. 30, 2023

Disclosure of operating segments [abstract]

Schedule of geographical areas

The following is a summary of the Company’s geographical information:

	Canada		United States		Germany		Norway		France		Other		Total
Revenues
Three months ended September 30, 2023	$	0.1	$	4.3	$	—	$	—	$	—	$	0.3	$	4.7
Three months ended September 30, 2022	0.4		2.4		—		—		—		—		2.8
Nine months ended September 30, 2023	$	1.0	$	10.6	$	—	$	—	$	—	$	0.3	$	11.9
Nine months ended September 30, 2022	3.2		7.6		—		—		—		—		10.8
Non-current assets
As at September 30, 2023	$	55.6	$	453.3	$	30.7	$	11.9	$	9.0	$	1.5	$	562.0
As of December 31, 2022	38.1		213.0		11.6		0.9		0.1		1.7		265.4