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Investments - Golden Queen Mining Company - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Aug. 31, 2023	Aug. 31, 2023	Aug. 31, 2024
Schedule of Equity Method Investments [Line Items]
Investment, other than temporary impairment	$ 27.8	$ 57.2
Golden Queen Mining Company
Schedule of Equity Method Investments [Line Items]
Ownership percentage			50.00%

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Amount of other-than-temporary decline in value that has been recognized against investment accounted for under equity method of accounting.

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