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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2011
Note 2 — Summary of Significant Accounting Policies [Abstract] |
Subsidiary [Table Text Block] |
Entity |  | Percentage of Ownership |  | Location
NeoStem, Inc. |  | Parent Company |  | United States of America
NeoStem Therapies, Inc. |  | 100% |  | United States of America
Stem Cell Technologies, Inc. |  | 100% |  | United States of America
Amorcyte, LLC |  | 100% |  | United States of America
NeoStem (China) Inc. (1) |  | 100% |  | People’s Republic of China
Qingdao Niao Bio-Technology Ltd.* (1) |  |  |  | People’s Republic of China
Beijing Ruijiao Bio-Technology Ltd.* (1) |  |  |  | People’s Republic of China
Tianjin Niou Bio-Technology Co., Ltd.* (1) |  |  |  | People’s Republic of China
CBH Acquisition LLC |  | 100% |  | United States of America
China Biopharmaceuticals Holdings, Inc. (CBH) |  | 100% owned by CBH Acquisition LLC |  | United States of America
Suzhou Erye Pharmaceuticals Company Ltd. (2) |  | 51% owned by CBH |  | People’s Republic of China
Progenitor Cell Therapy, LLC (PCT) |  | 100% |  | United States of America
NeoStem Family Storage, LLC |  | 100% owned by PCT |  | United States of America
Athelos Corporation |  | 80.1% owned by PCT |  | United States of America
PCT Allendale, LLC |  | 100% owned by PCT |  | United States of America
Property, Plant and Equipment [Table Text Block] |
| Useful Life |  | December 31, 2011 |  | December 31, 2010
Building and improvements | 25-30 years |  | $ | 9,874.0 |  |  | $ | — |
Machinery and equipment | 8-12 years |  | 17.9 |  |  | — |
Lab equipment | 5-7 years |  | 1,559.1 |  |  | 365.8 |
Furniture and fixtures | 5-12 years |  | 632.4 |  |  | 274.3 |
Software | 3-5 years |  | 98.3 |  |  | 99.6 |
Leasehold improvements | 2-3 years |  | 702.0 |  |  | 64.9 |
Property, plant and equipment, Gross |  |  | 12,883.6 |  |  | 804.6 |
Accumulated depreciation |  |  | (1,267.6 | ) |  | (369.1 | )
Property, plant and equipment, Net |  |  | $ | 11,616.1 |  |  | $ | 435.5 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | December 31,
|  | 2011 |  | 2010
Stock Options |  | 17,143,505 |  |  | 13,032,214 |
Warrants |  | 37,389,825 |  |  | 21,843,507 |
Series E Preferred Stock, Common stock equivalents |  | 3,989,669 |  |  | 5,289,948 |
Restricted Shares |  | 976,668 |  |  | 51,666 |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
|  | December 31, 2011
|  | Fair Value Measurements Using Fair Value Hierarchy
|  | Level 1 |  | Level 2 |  | Level 3
Money market investments |  | $ | 2,497.4 |  |  | $ | — |  |  | $ | — |
Embedded derivative liabilities |  | — |  |  | — |  |  | 391.7 |
Warrant derivative liabilities |  | — |  |  | — |  |  | 82.7 |
Contingent consideration |  | — |  |  | — |  |  | 3,130.0 |
|  | December 31, 2010
|  | Fair Value Measurements Using Fair Value Hierarchy
|  | Level 1 |  | Level 2 |  | Level 3
Money market investments |  | $ | — |  |  | $ | 2,501.0 |  |  | $ | — |
Embedded derivative liabilities |  | — |  |  | — |  |  | 2,281.8 |
Warrant derivative liabilities |  | — |  |  | — |  |  | 289.6 |
Schedue of finacial instrument activity [Table Text Block] |
|  | Embedded Derivatives |  | Warrants
Beginning liability balance, December 31, 2009 |  | $ | — |  |  | $ | 36.0 |
Convertible redeemable Series E preferred stock and warrants issued |  | 2,131.1 |  |  | 266.0 |
Change in fair value recorded in earnings |  | 150.7 |  |  | (12.4 | )
Ending liability balance, December 31, 2010 |  | $ | 2,281.8 |  |  | $ | 289.6 |
Change in fair value recorded in earnings |  | (1,890.1 | ) |  | (206.9 | )
Ending liability balance, December 31, 2011 |  | $ | 391.7 |  |  | $ | 82.7 |

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- Definition Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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