Accounts receivable (Tables)

6 Months Ended

Jun. 30, 2023

Trade and other current receivables [abstract]

Schedule of other receivables

As at	June 30, 2023		December 31, 2022
Trade receivables	$	0.9	$	4.3
Total accounts receivable	0.9		4.3
Non-trade receivables	$	—	$	3.5
Sales taxes receivable	3.2		4.1
Other	1.8		2.4
Total other receivables	$	5.0	$	10.0