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Related Party Transactions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Common Stock
Related Party Transaction [Line Items]
Number of shares sold		6,340,771		6,340,771	9,179,500
Pre-Funded Warrants
Related Party Transaction [Line Items]
Warrants exercise price per share		$ 9.00
Warrants to purchase shares of common stock		2,548,117
Warrants exercise price per share paid at closing of offering		$ 8.99
Ginkgo Bioworks, Inc.
Related Party Transaction [Line Items]
Warrants exercise price per share		$ 9.00
Proceeds from issuance of common stock and pre-funded warrants	$ 79.9	$ 79.9
Prepayment to related party for collaboration agreement		$ 30.0
Related party transaction collaboration agreement, initial term		5 years
Current Pre-Paid Research and Development	9.2		$ 9.2	$ 9.2
Non Current Pre-Paid Research and Development	$ 20.5		20.5	20.5
Prepaid research and development expenses			$ 0.3	$ 0.3
Ginkgo Bioworks, Inc. | Common Stock
Related Party Transaction [Line Items]
Number of shares sold	6,340,771	6,340,771
Ginkgo Bioworks, Inc. | Pre-Funded Warrants | Maximum
Related Party Transaction [Line Items]
Unbeneficial percentage of ownership after exercise of common stock outstanding effect to issuance				19.99%
Ginkgo Bioworks, Inc. | Pre-Funded Warrants
Related Party Transaction [Line Items]
Warrants exercise price per share	$ 9.00	$ 9.00	$ 9.00	$ 9.00
Warrants to purchase shares of common stock	2,548,117	2,548,117	2,548,117	2,548,117
Warrants exercise price per share paid at closing of offering	$ 8.99	$ 8.99	$ 8.99	$ 8.99

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