Prepayments, deposits and other current assets (Tables)

12 Months Ended

Dec. 31, 2023

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure

As at	December 31, 2023		December 31, 2022		October 31, 2022		October 31, 2021
Prepaid equipment deposits	$	40.1	$	86.1	$	76.4	$	3.2
Prepaid transaction costs	7.8		0.6		0.3		—
Prepaid lease deposits	5.6		2.9		2.8		0.9
Prepaid insurance	4.6		6.0		5.7		3.8
Prepaid construction charges	2.6		1.4		1.4		—
Other prepaids	3.3		2.4		2.8		0.7
Total prepayments, deposits and other current assets	$	64.0	$	99.4	$	89.4	$	8.6
Non-current security deposits	(5.0)		(2.4)		(3.6)		—
Non-current insurance	(2.8)		(1.8)		—		—
Current prepayments and deposits	$	56.2	$	95.2	$	85.8	$	8.6