Investments and Equity Method Investments - Schedule of Investments and Equity Method Investments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Apr. 30, 2022	Mar. 31, 2021	Sep. 30, 2017
Net Investment Income [Line Items]
Total	$ 78,565,000	$ 112,188,000
Equity method investments	0	1,543,000
(Loss) gain on investments:	(54,827,000)	(53,335,000)	$ (11,543,000)
Loss on equity method investments	(2,635,000)	(43,761,000)	(77,284,000)
SAFEs
Net Investment Income [Line Items]
SAFEs	23,898,000	22,108,000
(Loss) gain on investments:	(2,742,000)	0	0
Non-marketable equity securities
Net Investment Income [Line Items]
Equity securities	22,938,000	17,544,000
Total	58,721,000
(Loss) gain on investments:	(9,928,000)	(195,000)	0
Marketable equity securities
Net Investment Income [Line Items]
Equity securities	17,563,000	20,895,000
(Loss) gain on investments:	(4,682,000)	(28,269,000)	(13,854,000)
Genomatica preferred stock
Net Investment Income [Line Items]
Equity securities	11,885,000	44,885,000
(Loss) gain on investments:	(33,000,000)	(10,115,000)	0
Synlogic common stock
Net Investment Income [Line Items]
Equity securities	1,627,000	4,819,000
(Loss) gain on investments:	(3,192,000)	(10,526,000)	1,649,000
Synlogic warrants
Net Investment Income [Line Items]
Equity securities	654,000	1,937,000
(Loss) gain on investments:	(1,283,000)	(4,230,000)	662,000
BiomEdit
Net Investment Income [Line Items]
Equity method investments	0	369,000		$ 8,900,000
Loss on equity method investments	(1,461,000)	(8,503,000)	0
Other
Net Investment Income [Line Items]
Equity method investments	0	1,174,000
Loss on equity method investments	(1,174,000)	(326,000)	0
Joyn Bio
Net Investment Income [Line Items]
Equity method investments						$ 97,900,000
Loss on equity method investments	0	(3,043,000)	(17,230,000)
Allonnia
Net Investment Income [Line Items]
Loss on equity method investments	0	0	(12,698,000)
Arcaea
Net Investment Income [Line Items]
Equity method investments		0			$ 11,900,000
Loss on equity method investments	0	0	(47,356,000)
Verb Biotics
Net Investment Income [Line Items]
Loss on equity method investments	0	(15,900,000)	0
Ayana
Net Investment Income [Line Items]
Loss on equity method investments	0	(15,989,000)	$ 0
Platform Ventures
Net Investment Income [Line Items]
Equity method investments	$ 0	0
Joyn Bio
Net Investment Income [Line Items]
Equity method investments		0
Gain on company's equity remeasurement		17,000,000.0
Loss on equity method investment		$ 14,000,000.0