Prepayments and deposits (Tables)

12 Months Ended

Oct. 31, 2022

Prepayments And Deposits [Abstract]

Schedule of prepayments and deposits

As at October 31,	2022		2021
Prepaid lease deposits	$	2.8	$	0.9
Prepaid transaction costs	0.3		—
Prepaid construction charges	1.4		—
Prepaid equipment deposits	76.4		3.2
Prepaid insurance	5.7		3.8
Other prepaids	2.8		0.6
Total prepaids and deposits	89.4		8.5
Non-current portion of prepaid lease deposits	(3.6)		—
Current prepaids and deposits	$	85.8	$	8.5