Commitments and contingencies (Additional Information) (Details) - Royalty Transfer Agreement [Member]	Aug. 27, 2020
Other Commitments [Line Items]
Payment as a percentage of annual global net sales to each charity foundation	0.50%
Total payment as a percetage of net sales	1.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Balance Type:	na
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