Accounts receivable (Tables)

12 Months Ended

Oct. 31, 2022

Trade and other current receivables [abstract]

Schedule of other receivables

Other receivables consist principally of interest receivable and receivables from non-trade vendors.

Aging Summary
As at October 31,	2022		2021
Current	$	0.3	$	3.2
1-30 days	0.6		0.3
31-60 days	0.3		0.1
61-90 days	0.1		—
91 days and over	0.2		0.5
Total accounts receivable	$	1.5	$	4.1

Schedule of revenue by customers

The Company's revenue primarily comes from two key customers, as shown in the table below. The Company's remaining customers do not make up significant percentages of these balances. For additional details on product sales and fair value adjustments recognized in the period, refer to Note 3.

Revenue
For the years ended October 31,	2022		2021		2020
Customer A	16.3	%	42.0	%	67.0	%
Customer B	69.6	%	52.0	%	0.0	%

    

Trade Accounts Receivable
As at October 31,	2022		2021		2020
Customer A	18.3	%	53.0	%	90.0	%
Customer B	42.8	%	45.0	%	0.0	%