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.

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Name:	us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Collaboration, License, and Other Agreements - U.S. Government Narrative (Details) - REGEN-COV - U.S. Government - Other Transaction Agreement $ in Millions		1 Months Ended	6 Months Ended
	Jan. 31, 2022 USD ($)	Sep. 30, 2021 dose	Jun. 30, 2021 dose
Disaggregation of Revenue [Line Items]
Number of doses \| dose		1,400,000	1,250,000
Scenario, Forecast
Disaggregation of Revenue [Line Items]
Maximum agreement payments \| $	$ 2,940