The Business Principal of consolidation (Details)	6 Months Ended
	Jun. 30, 2013
NeoStem, Inc. [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Minority Interest Ownership Percentage By Parent [String]	Parent  Company
NeoStem Therapies, Inc [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary, Ownership Interest by Parent	100.00%
Stem Cell Technologies, Inc [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary, Ownership Interest by Parent	100.00%
Amorcyte, LLC [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary, Ownership Interest by Parent	100.00%
CBH Acquisition LLC [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary, Ownership Interest by Parent	100.00%
China Biopharmaceuticals Holdings, Inc. [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	100.00%
Minority Interest Ownership Percentage By Parent [String]	100% owned by CBH Acquisition LLC
Suzhou Erye Pharmaceuticals Company Ltd. [Member] | CHINA
Schedule of Subisidiary [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	51.00%
Progenitor Cell Therapy, LLC [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary, Ownership Interest by Parent	100.00%
NeoStem Family Storage, LLC [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	100.00%
Minority Interest Ownership Percentage By Parent [String]	100% owned by PCT
Athelos Corporation [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	80.10%
Minority Interest Ownership Percentage By Parent [String]	80.1% owned by PCT
PCT Allendale, LLC [Member] | UNITED STATES
Schedule of Subisidiary [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	100.00%
Minority Interest Ownership Percentage By Parent [String]	100% owned by PCT