The Business Principal of consolidation (Details)	6 Months Ended
Jun. 30, 2012
NeoStem, Inc. [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	Parent Company
NeoStem, Inc. [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
NeoStem Therapies, Inc [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	100%
NeoStem Therapies, Inc [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
Stem Cell Technologies, Inc [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	100%
Stem Cell Technologies, Inc [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
Amorcyte, LLC [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	100%
Amorcyte, LLC [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
CBH Acquisition LLC [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	100%
CBH Acquisition LLC [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
China Biopharmaceuticals Holdings, Inc. [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	100% owned by CBH Acquisition LLC
China Biopharmaceuticals Holdings, Inc. [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
Suzhou Erye Pharmaceuticals Company Ltd. [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	51% owned by CBH
Suzhou Erye Pharmaceuticals Company Ltd. [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	People’s Republic of China
Progenitor Cell Therapy, LLC [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	100%
Progenitor Cell Therapy, LLC [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
NeoStem Family Storage, LLC [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	100% owned by PCT
NeoStem Family Storage, LLC [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
Athelos Corporation [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	80.1% owned by PCT
Athelos Corporation [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America
PCT Allendale, LLC [Member] \| Percentage Of Ownership [Member]
Schedule of Subisidiary [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent, String	100% owned by PCT
PCT Allendale, LLC [Member] \| Location [Member]
Schedule of Subisidiary [Line Items]
Entity Location	United States of America

The Business Principal of consolidation (Details)

6 Months Ended

Jun. 30, 2012

NeoStem, Inc. [Member] | Percentage Of Ownership [Member]

Schedule of Subisidiary [Line Items]

Noncontrolling Interest, Ownership Percentage by Parent, String

Parent Company

NeoStem, Inc. [Member] | Location [Member]

Schedule of Subisidiary [Line Items]

Entity Location

United States of America

NeoStem Therapies, Inc [Member] | Percentage Of Ownership [Member]