Subsequent Event - Narrative (Details) - SpringWorks - Subsequent Event	1 Months Ended
Oct. 31, 2020 USD ($)
Subsequent Event [Line Items]
Upfront payment paid	$ 35,000,000.0
Clinical, Regulatory And Commercial Milestones
Subsequent Event [Line Items]
Milestones not yet incurred	$ 375,000,000.0

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration