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Development and Other Agreements (Details) - Verily Life Sciences - Collaborative Arrangement - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2022	Mar. 31, 2022	Dec. 28, 2018	Nov. 30, 2018
Other Commitments [Line Items]
Amortization period				64 months
Initial Payment
Other Commitments [Line Items]
Closing stock price (USD per share)						$ 29.57
Initial payment on collaborative agreement		$ 250.0
Issuance of common stock in connection with acquisition, shares (shares)		7,363,772
Collaborative research and development fee	$ 87.1	$ 217.7
Milestone Payments
Other Commitments [Line Items]
Collaborative research and development fee			$ 3.2
Potential future common stock issuable (shares)							5,154,640
Sales-based milestones				$ 152.4
Approval Milestone
Other Commitments [Line Items]
Potential future common stock issuable (shares)					2,945,508

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