Subsequent events (Narrative) (Details)				1 Months Ended	9 Months Ended	12 Months Ended
	Sep. 12, 2022 CAD ($) $ / shares shares	Sep. 12, 2022 USD ($) shares	Aug. 09, 2022 shares	Feb. 28, 2022 shares	Feb. 28, 2022 shares	May 31, 2022 $ / shares shares	Aug. 01, 2022 $ / shares shares	May 31, 2021 $ / shares shares
Subsequent Event [Line Items]
Common Stock, Shares Authorized						250,000,000		250,000,000
Common Stock, Par Value Per Share | $ / shares						$ 0.001		$ 0.001
Common stock issued to purchase mineral property (Shares)					28,500,000
Board of Directors [Member]
Subsequent Event [Line Items]
Common Stock, Shares Authorized						100,000,000
Common Stock, Par Value Per Share | $ / shares						$ 0.001
Property Purchase Agreement [Member]
Subsequent Event [Line Items]
Common stock issued to purchase mineral property (Shares)				28,500,000		28,500,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Par Value Per Share | $ / shares	$ 0.025
Proceeds From Share Subscriptions	$ 10,000	$ 7,710
Flow-through Shares Subscribed	400,000	400,000
Subsequent Event [Member] | Board of Directors [Member]
Subsequent Event [Line Items]
Common Stock, Shares Authorized							250,000,000
Common Stock, Par Value Per Share | $ / shares							$ 0.001
Subsequent Event [Member] | Property Purchase Agreement [Member]
Subsequent Event [Line Items]
Common stock issued to purchase mineral property (Shares)			27,500,000
Number of common shares cancelled pursuant to amended			500,000