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Organization, Basis of Presentation and Liquidity - Schedule of Lineage's Ownership of Outstanding Shares of its Subsidiaries (Details) | 9 Months Ended
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Sep. 30, 2025
Cell Cure Neurosciences Ltd. ("CCN") [Member] |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Field of business description | Manufacturing of Lineage’s product candidates | [1]
Ownership percentage by parent | 94.00% | [1]
ES Cell International Pte. Ltd. ("ESI") [Member] |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Field of business description | Research and clinical grade cell lines |
Ownership percentage by parent | 100.00% |
[1] | Includes shares owned by Lineage and ESI.

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