XML 81 R55.htm IDEA: XBRL DOCUMENT
v3.3.1.900

ORGANIZATION AND PRINCIPAL ACTIVITIES - PRINCIPLE SUBSIDIARIES OF VIES AND EQUITY INVESTEES (Details) | 12 Months Ended
--- | ---
Dec. 31, 2015
Beijing Network |
Percentage of ownership | 0.00%
Cheetah Technology |
Percentage of ownership | 100.00%
HK Zoom |
Percentage of ownership | 100.00%
Youloft HK |
Percentage of ownership | 51.90%
MobPartner |
Percentage of ownership | 100.00%
MobPartner UK Limited |
Percentage of ownership | 100.00%
Moxiu Technology |
Percentage of ownership | 52.10%
Beijing Antutu |
Percentage of ownership | 100.00%
Guangzhou Kingsoft |
Percentage of ownership | 100.00%
Suzhou JDD |
Percentage of ownership | 75.00%

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=52262685&loc=SL6759159-111685 + Details
Name: | us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=cmcm_BeijingKingsoftNetworkTechnologyCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_CheetahTechnologyCorporationLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_HkZoomBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_YouloftHkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_MobPartnerSasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_MobPartnerUKLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_MoxiuTechnologyBeijingCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_BeijingAntutuTechnologyCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_GuangzhouKingsoftNetworkTechnologyCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cmcm_SuzhouJiangduoduoTechnologyCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |