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Investments and Equity Method Investments - Additional Information (Details) - shares
Dec. 31, 2021
Dec. 31, 2020
Net Investment Income [Line Items]    
Common stock shares issued 1,690,990,815 1,289,014,925
Synlogic [Member]    
Net Investment Income [Line Items]    
Common stock shares issued 6,340,771 6,340,771
Shares purchased 2,548,117