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Collaboration, License and Success Payment Agreements - Schedule of Aggregate Potential Success Payments (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($) $ / shares
Fred Hutch [Member] | 10x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	10
Share issued price per share | $ / shares	$ 18.29
Aggregate success payment | $	$ 10
Fred Hutch [Member] | 20x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	20
Share issued price per share | $ / shares	$ 36.58
Aggregate success payment | $	$ 40
Fred Hutch [Member] | 30x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	30
Share issued price per share | $ / shares	$ 54.86
Aggregate success payment | $	$ 90
Fred Hutch [Member] | 40x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	40
Share issued price per share | $ / shares	$ 73.15
Aggregate success payment | $	$ 140
Fred Hutch [Member] | 50x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	50
Share issued price per share | $ / shares	$ 91.44
Aggregate success payment | $	$ 200
Stanford [Member] | 10x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	10
Share issued price per share | $ / shares	$ 18.29
Aggregate success payment | $	$ 10
Stanford [Member] | 20x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	20
Share issued price per share | $ / shares	$ 36.58
Aggregate success payment | $	$ 40
Stanford [Member] | 30x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	30
Share issued price per share | $ / shares	$ 54.86
Aggregate success payment | $	$ 90
Stanford [Member] | 40x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	40
Share issued price per share | $ / shares	$ 73.15
Aggregate success payment | $	$ 140
Stanford [Member] | 50x [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Multiple of initial equity value at issuance	50
Share issued price per share | $ / shares	$ 91.44
Aggregate success payment | $	$ 200

X

- Definition

Aggregate success payment.

+ References

No definition available.

+ Details

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X

- Definition

Common stock price per share required for payment.

+ References

No definition available.

+ Details

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X

- Definition

Multiple of initial equity value at issuance.

+ References

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X

- Definition

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.

+ References

No definition available.

+ Details

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- Details

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- Details

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X

- Details

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X

- Details

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