XML 338 R58.htm IDEA: XBRL DOCUMENT v3.23.1
Accounting Policies - Subsidiaries (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Subsidiary operating companies | Alivio Therapeutics, Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 91.90%
Subsidiary operating companies | Entrega, Inc. (indirectly held through Enlight) | Preferred      
Accounting Policies      
Voting percentage through the holdings 77.30% 77.30% 83.10%
Subsidiary operating companies | Follica, Incorporated | Common      
Accounting Policies      
Voting percentage through the holdings 28.70% 28.70% 28.70%
Subsidiary operating companies | Follica, Incorporated | Preferred      
Accounting Policies      
Voting percentage through the holdings 56.70% 56.70% 56.70%
Subsidiary operating companies | PureTech LYT (formerly Ariya Therapeutics, Inc.) | Preferred      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 100.00%
Subsidiary operating companies | PureTech LYT-100 | Preferred      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 100.00%
Subsidiary operating companies | PureTech Management, Inc. | Common      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 100.00%
Subsidiary operating companies | PureTech Health LLC | Common      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 100.00%
Subsidiary operating companies | Vedanta Biosciences | Preferred      
Accounting Policies      
Voting percentage through the holdings 47.00% 48.60% 59.30%
Subsidiary operating companies | Vedanta Biosciences Securities Corp. (indirectly held through Vedanta) | Preferred      
Accounting Policies      
Voting percentage through the holdings 47.00% 48.60% 59.30%
Deconsolidated former subsidiary operating companies | Sonde Health, Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings 40.20% 51.80% 51.80%
Deconsolidated former subsidiary operating companies | Akili Interactive Labs, Inc. | Common      
Accounting Policies      
Voting percentage through the holdings 14.70%    
Deconsolidated former subsidiary operating companies | Akili Interactive Labs, Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings 0.00% 26.70% 41.90%
Deconsolidated former subsidiary operating companies | Gelesis, Inc. | Common      
Accounting Policies      
Voting percentage through the holdings 22.80% 4.80% 4.90%
Deconsolidated former subsidiary operating companies | Gelesis, Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings 0.00% 19.70% 20.20%
Deconsolidated former subsidiary operating companies | Karuna Therapeutics, Inc. | Common      
Accounting Policies      
Voting percentage through the holdings 3.10% 5.60% 12.60%
Deconsolidated former subsidiary operating companies | Vor Biopharma Inc. | Common      
Accounting Policies      
Voting percentage through the holdings 4.10% 8.60%  
Deconsolidated former subsidiary operating companies | Vor Biopharma Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings   0.00% 16.40%
Nontrading holding companies | Endra Holdings, LLC (held indirectly through Enlight) | Common      
Accounting Policies      
Voting percentage through the holdings 86.00% 86.00% 86.00%
Nontrading holding companies | Ensof Holdings, LLC (held indirectly through Enlight) | Common      
Accounting Policies      
Voting percentage through the holdings 86.00% 86.00% 86.00%
Nontrading holding companies | PureTech Securities Corp. | Common      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 100.00%
Nontrading holding companies | PureTech Securities II Corp. | Common      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00%  
Inactive subsidiaries | Appeering Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 100.00%
Inactive subsidiaries | Commense Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings 99.10% 99.10% 99.10%
Inactive subsidiaries | Enlight Biosciences, LLC | Common      
Accounting Policies      
Voting percentage through the holdings 86.00% 86.00% 86.00%
Inactive subsidiaries | Ensof Biosystems, Inc. (held indirectly through Enlight) | Common      
Accounting Policies      
Voting percentage through the holdings 57.70% 57.70% 57.70%
Inactive subsidiaries | Ensof Biosystems, Inc. (held indirectly through Enlight) | Preferred      
Accounting Policies      
Voting percentage through the holdings 28.30% 28.30% 28.30%
Inactive subsidiaries | Knode Inc. (indirectly held through Enlight) | Preferred      
Accounting Policies      
Voting percentage through the holdings 86.00% 86.00% 86.00%
Inactive subsidiaries | Libra Biosciences, Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 100.00%
Inactive subsidiaries | Mandara Sciences, LLC | Common      
Accounting Policies      
Voting percentage through the holdings 98.30% 98.30% 98.30%
Inactive subsidiaries | Tal Medical, Inc. | Preferred      
Accounting Policies      
Voting percentage through the holdings 100.00% 100.00% 100.00%