Commitments and contingencies - Other commitments - Additional information (Details) $ in Millions	Sep. 30, 2020 USD ($)
Service Agreements and Laboratory Supplies
Other Commitments [Line Items]
Noncancelable unconditional purchase commitments	$ 7.7

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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