Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2012
Related Party Transactions [Abstract]
Related Party Transactions	8. Related Party Transactions BioTime currently pays $5,050 per month for the use of approximately 900 square feet of office space in New York City, which is made available to BioTime on a month-by-month basis by one of its directors at his cost for use in conducting meetings and other business affairs. In July and December 2012, LifeMap Sciences sold 1,714,287 shares of common stock to certain investors, including two of BioTime's largest shareholders, for $250,000 cash and 592,533 BioTime common shares having a market value of $2,750,000. See Note 16.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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