XML 91 R72.htm IDEA: XBRL DOCUMENT v3.8.0.1

Weighted Average Useful Lives of Intangible Assets (Detail)	12 Months Ended
	Dec. 31, 2017
Purchased software
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	4 years 4 months 24 days
Radio Spectrum License
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	15 years
Contract Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	4 years 10 months 24 days	[1]
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	8 years 9 months 18 days	[1]
Supplier Relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	10 years	[1]
Licenses
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	15 years	[1]
Trade Names
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	20 years	[1]
Platform Software
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	5 years	[1]
Non-complete agreement
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	5 years	[1]
Internal Use Software
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets	4 years 10 months 24 days
[1] Acquired in the acquisitions of subsidiaries

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_ComputerSoftwareIntangibleAssetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=vnet_RadioSpectrumLicenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=vnet_ContractBacklogMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=vnet_SupplierRelationshipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_LicensingAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=vnet_PlatformSoftwareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=vnet_InternalUseSoftwareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: