Prepayments and deposits (Tables)

9 Months Ended

Sep. 30, 2023

Prepayments And Deposits [Abstract]

Schedule of prepayments and deposits

As at	September 30, 2023		December 31, 2022
Prepaid lease deposits	$	0.7	$	0.5
Prepaid transaction costs	5.7		0.6
Prepaid construction charges	3.1		1.4
Prepaid equipment deposits	33.4		86.1
Prepaid insurance	5.3		4.2
Other prepaids	3.6		2.4
Prepaids and deposits	$	51.8	$	95.2