XML 139 R120.htm IDEA: XBRL DOCUMENT v3.8.0.1

Tax Holiday Benefit Per Basic and Diluted Earnings per share (Detail) - ¥ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Basic	¥ 0.003	¥ 0.006
Diluted	¥ 0.003	¥ 0.006

X

- References

No definition available.

+ Details

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

X

- Definition

Effect Of Tax Holiday On Earnings Per Share Basic

+ References

No definition available.

+ Details

Name:	vnet_EffectOfTaxHolidayOnEarningsPerShareBasic
Namespace Prefix:	vnet_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Effect Of Tax Holiday On Earnings Per Share Diluted

+ References

No definition available.

+ Details

Name:	vnet_EffectOfTaxHolidayOnEarningsPerShareDiluted
Namespace Prefix:	vnet_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration