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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
	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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