Research Collaboration and License Agreements - Summary of Contract Balances (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Accounts receivable
Beginning balance	$ 15.0	$ 0.0
Payments received	(15.0)	0.0
Ending balance	0.0	0.0
Contract assets: Collaboration contract asset
Beginning balance	12.5	0.0
Amortization	(0.4)	0.0
Ending balance	12.1	0.0
Contract liabilities: Deferred revenue
Beginning balance	740.6	45.1
Revenue recognized from balances held at the beginning of the period	(24.2)	(5.5)
Additions to collaboration agreements	3.0	3.0
Ending balance	$ 719.4	$ 42.6

Accounts Receivable, After Allowance For Credit Loss, Current, Period Increase (Decrease)

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Change in Accounts Receivable, after Allowance for Credit Loss

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Change in Collaboration Contract Asset And Other Assets

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Collaboration contract asset and other assets.

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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