XML 27 R8.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Consolidated Statements of Shareholders' Equity ¥ in Thousands, $ in Thousands | USD ($) shares | CNY (¥) shares | Esta/King Venture/Xiaomi CNY (¥) | Ordinary shares USD ($) shares | Ordinary shares CNY (¥) shares | Ordinary shares Esta/King Venture/Xiaomi CNY (¥) shares | Treasury stock USD ($) | Treasury stock CNY (¥) | Additional paid-in capital USD ($) | Additional paid-in capital CNY (¥) | Additional paid-in capital Esta/King Venture/Xiaomi CNY (¥) | Accumulated other comprehensive (loss) income USD ($) | Accumulated other comprehensive (loss) income CNY (¥) | Statutory reserves USD ($) | Statutory reserves CNY (¥) | Accumulated deficit USD ($) | Accumulated deficit CNY (¥) | Total 21Vianet Group, Inc. shareholders' equity USD ($) | Total 21Vianet Group, Inc. shareholders' equity CNY (¥) | Total 21Vianet Group, Inc. shareholders' equity Esta/King Venture/Xiaomi CNY (¥) | Non-controlling interest USD ($) | Non-controlling interest CNY (¥)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Dec. 31, 2014 | shares |  |  |  | 396,234,309 | 396,234,309 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2014 |  | ¥ 2,226,957 |  |  | ¥ 26 |  |  | ¥ (213,665) |  | ¥ 4,225,029 |  |  | ¥ (65,754) |  | ¥ 52,263 |  | ¥ (1,794,975) |  | ¥ 2,202,924 |  |  | ¥ 24,033
Consolidated net loss |  | (425,648) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (428,099) |  | (428,099) |  |  | 2,451
Contribution by noncontrolling interest through acquisition |  | (8,000) |  |  |  |  |  |  |  | (1,963) |  |  |  |  |  |  |  |  | (1,963) |  |  | (6,037)
Foreign exchange difference |  | 41,518 |  |  |  |  |  |  |  |  |  |  | 41,518 |  |  |  |  |  | 41,518 |  |  |
Issuance of new shares for stock consideration settlement (in shares) | shares |  |  |  | 13,098,599 | 13,098,599 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of new shares for stock consideration settlement |  |  |  |  | ¥ 1 |  |  |  |  | (1) |  |  |  |  |  |  |  |  |  |  |  |
Issuance of new shares (in shares) | shares |  |  |  |  |  | 98,672,082 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of new shares |  |  | ¥ 1,808,498 |  |  | ¥ 7 |  |  |  |  | ¥ 1,808,491 |  |  |  |  |  |  |  |  | ¥ 1,808,498 |  |
Issuance of new shares for share option exercise and restricted share units vested (in shares) | shares |  |  |  | 6,429,372 | 6,429,372 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of new shares for share option exercise and restricted share units vested |  | 2,105 |  |  |  |  |  |  |  | 2,105 |  |  |  |  |  |  |  |  | 2,105 |  |  |
Settlement of stock consideration settlement by treasury stock (in shares) | shares |  |  |  | 878,232 | 878,232 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of stock consideration settlement by treasury stock |  |  |  |  |  |  |  | 20,523 |  | (20,523) |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation |  | ¥ 162,346 |  |  |  |  |  |  |  | 162,346 |  |  |  |  |  |  |  |  | 162,346 |  |  |
Shares issued to depository bank (in shares) | shares | 7,200,000 | 7,200,000 |  | 7,200,000 | 7,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of contingent consideration payable upon resolution of contingencies |  | ¥ 214,543 |  |  |  |  |  |  |  | 214,543 |  |  |  |  |  |  |  |  | 214,543 |  |  |
Appropriation of statutory reserves |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,911 |  | (10,911) |  |  |  |  |
Appropriation of dividend |  | (1,034) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,034)
(Increase) Decrease in accretion of redeemable noncontrolling interests |  | ¥ 7,850 |  |  |  |  |  |  |  | 7,850 |  |  |  |  |  |  |  |  | 7,850 |  |  |
Share repurchase (in shares) | shares | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share options exercised (in shares) | shares |  |  |  | 2,454,420 | 2,454,420 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share options exercised |  | ¥ 5,240 |  |  |  |  |  |  |  | 5,240 |  |  |  |  |  |  |  |  | 5,240 |  |  |
Restricted share units vested | shares |  |  |  | 4,462,098 | 4,462,098 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of share options with shares held by depository bank (in shares) | shares |  |  |  | (6,916,518) | (6,916,518) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of share options with shares held by depository bank |  | 0 |  | $ 0 | ¥ 0 |  |  | 0 |  | 0 |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0
Ending Balance (in shares) at Dec. 31, 2015 | shares |  |  |  | 522,512,594 | 522,512,594 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance at Dec. 31, 2015 |  | 4,034,375 |  |  | ¥ 34 |  |  | (193,142) |  | 6,403,117 |  |  | (24,236) |  | 63,174 |  | (2,233,985) |  | 4,014,962 |  |  | 19,413
Consolidated net loss |  | (631,209) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (633,598) |  | (633,598) |  |  | 2,389
Contribution from noncontrolling interest in a subsidiary |  | 4,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000
Foreign exchange difference |  | 142,526 |  |  |  |  |  |  |  |  |  |  | 142,526 |  |  |  |  |  | 142,526 |  |  |
Issuance of new shares for stock consideration settlement (in shares) | shares |  |  |  | 10,087,476 | 10,087,476 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of new shares for stock consideration settlement |  |  |  |  | ¥ 1 |  |  |  |  | (1) |  |  |  |  |  |  |  |  |  |  |  |
Issuance of new shares (in shares) | shares |  |  |  | 143,050,264 | 143,050,264 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of new shares |  | 2,548,695 |  |  | ¥ 10 |  |  |  |  | 2,548,685 |  |  |  |  |  |  |  |  | 2,548,695 |  |  |
Issuance of new shares for share option exercise and restricted share units vested (in shares) | shares |  |  |  | 3,261,456 | 3,261,456 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of new shares for share option exercise and restricted share units vested |  | 1,119 |  |  |  |  |  |  |  | 1,119 |  |  |  |  |  |  |  |  | 1,119 |  |  |
Settlement of stock consideration settlement by treasury stock (in shares) | shares |  |  |  | 1,338,966 | 1,338,966 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of stock consideration settlement by treasury stock |  | 536 |  |  |  |  |  | 31,250 |  | (30,714) |  |  |  |  |  |  |  |  | 536 |  |  |
Share based compensation |  | ¥ 90,734 |  |  |  |  |  |  |  | 90,734 |  |  |  |  |  |  |  |  | 90,734 |  |  |
Shares issued to depository bank (in shares) | shares | 4,500,000 | 4,500,000 |  | 4,500,000 | 4,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of contingent consideration payable upon resolution of contingencies |  | ¥ 210,000 |  |  |  |  |  |  |  | 210,000 |  |  |  |  |  |  |  |  | 210,000 |  |  |
Appropriation of statutory reserves |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,448 |  | (1,448) |  |  |  |  |
(Increase) Decrease in accretion of redeemable noncontrolling interests |  | ¥ (210,485) |  |  |  |  |  |  |  | (210,485) |  |  |  |  |  |  |  |  | (210,485) |  |  |
Share repurchase (in shares) | shares | (4,893,150) | (4,893,150) |  | (4,893,150) | (4,893,150) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase |  | ¥ (42,665) |  |  |  |  |  | (42,665) |  |  |  |  |  |  |  |  |  |  | (42,665) |  |  |
Share options exercised (in shares) | shares |  |  |  | 921,594 | 921,594 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share options exercised |  | 3,391 |  |  |  |  |  |  |  | 3,391 |  |  |  |  |  |  |  |  | 3,391 |  |  |
Restricted share units vested | shares |  |  |  | 6,957,984 | 6,957,984 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted share units vested |  | 0 |  | $ 0 | ¥ 0 |  |  | 0 |  | 0 |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0
Settlement of share options with shares held by depository bank (in shares) | shares |  |  |  | (7,879,578) | (7,879,578) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of share options with shares held by depository bank |  | 0 |  | $ 0 | ¥ 0 |  |  | 0 |  | 0 |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0
Ending Balance (in shares) at Dec. 31, 2016 | shares |  |  |  | 679,857,606 | 679,857,606 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance at Dec. 31, 2016 |  | 6,151,017 |  |  | ¥ 45 |  |  | (204,557) |  | 9,015,846 |  |  | 118,290 |  | 64,622 |  | (2,869,031) |  | 6,125,215 |  |  | 25,802
Consolidated net loss |  | (775,748) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (772,730) |  | (772,730) |  |  | (3,018)
Cumulative adjustment for changes in accounting principles |  | (13,425) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (13,425) |  | (13,425) |  |  |
Contribution from noncontrolling interest in a subsidiary |  | 134,633 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 134,633
Foreign exchange difference |  | (120,963) |  |  |  |  |  |  |  |  |  |  | (120,963) |  |  |  |  |  | (120,963) |  |  |
Issuance of new shares for share option exercise and restricted share units vested (in shares) | shares |  |  |  | 3,119,052 | 3,119,052 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation |  | ¥ 105,532 |  |  |  |  |  |  |  | 105,532 |  |  |  |  |  |  |  |  | 105,532 |  |  |
Shares issued to depository bank (in shares) | shares | 9,000,000 | 9,000,000 |  | 9,000,000 | 9,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share issued to depository bank |  |  |  |  | ¥ 1 |  |  |  |  | (1) |  |  |  |  |  |  |  |  |  |  |  |
Appropriation of statutory reserves |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,083 |  | (2,083) |  |  |  |  |
Appropriation of dividend |  | ¥ (5,946) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,946)
Disposal of subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (27,969) |  | 27,969 |  |  |  |  |
(Increase) Decrease in accretion of redeemable noncontrolling interests |  | ¥ (141,896) |  |  |  |  |  |  |  | (141,896) |  |  |  |  |  |  |  |  | (141,896) |  |  |
Share repurchase (in shares) | shares | (20,690,892) | (20,690,892) |  | (20,690,892) | (20,690,892) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase |  | ¥ (133,126) |  |  |  |  |  | (133,126) |  |  |  |  |  |  |  |  |  |  | (133,126) |  |  |
Share options exercised (in shares) | shares |  |  |  | 332,754 | 332,754 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share options exercised |  | 926 |  |  |  |  |  |  |  | 926 |  |  |  |  |  |  |  |  | 926 |  |  |
Restricted share units vested | shares |  |  |  | 10,576,398 | 10,576,398 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted share units vested |  | 0 |  | $ 0 | ¥ 0 |  |  | 0 |  | 0 |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0
Settlement of share options with shares held by depository bank (in shares) | shares |  |  |  | (10,909,152) | (10,909,152) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of share options with shares held by depository bank |  | 0 |  | $ 0 | ¥ 0 |  |  | 0 |  | 0 |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0
Ending Balance (in shares) at Dec. 31, 2017 | shares |  |  |  | 671,285,766 | 671,285,766 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance at Dec. 31, 2017 | $ 799,380 | ¥ 5,201,004 |  | $ 7 | ¥ 46 |  | $ (51,901) | ¥ (337,683) | $ 1,380,263 | ¥ 8,980,407 |  | $ (411) | ¥ (2,673) | $ 5,954 | ¥ 38,736 | $ (557,813) | ¥ (3,629,300) | $ 776,099 | ¥ 5,049,533 |  | $ 23,281 | ¥ 151,471

X
- Definition Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79507207&loc=d3e4534-113899 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=96864182&loc=d3e11149-113907 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=96864182&loc=d3e11178-113907 + Details
Name: | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of the cumulative effect on retained earnings before related income tax effect. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22663-107794 + Details
Name: | us-gaap_CumulativeEffectOnRetainedEarningsBeforeTax1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of the gain (loss) recognized by the parent and included in its attributable portion of net income for the period due to deconsolidation of a subsidiary or derecognition of a group of assets. The gain (loss) recognized and included in the net income attributable to the parent for the period is generally computed as the difference between: (a) the aggregate of: (1) the fair value of any consideration received; (2) the fair value of any retained noncontrolling investment in the former subsidiary at the date the subsidiary was deconsolidated; and (3) the carrying amount of any noncontrolling interest in the former subsidiary (including any accumulated other comprehensive income attributable to the noncontrolling interest) at the date the subsidiary was deconsolidated and (b) the carrying amount of the former subsidiary's assets and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4582445-111684 + Details
Name: | us-gaap_DeconsolidationGainOrLossAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 16(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
Name: | us-gaap_MinorityInterestChangeInRedemptionValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569655-111683 + Details
Name: | us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b,c) -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of shares issued which are neither cancelled nor held in the treasury. + References No definition available. + Details
Name: | us-gaap_SharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of stock issued during the period pursuant to acquisitions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesAcquisitions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of stock issued pursuant to acquisitions during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueAcquisitions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Value of stock issued as a result of the exercise of stock options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4590271-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4568740-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4568447-111683 + Details
Name: | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Changes In Contingent Acquisition Consideration Payable + References No definition available. + Details
Name: | vnet_ChangesInContingentAcquisitionConsiderationPayable
Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Depositary Shares Issued + References No definition available. + Details
Name: | vnet_DepositarySharesIssued
Namespace Prefix: | vnet_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Depositary Shares Issued Value + References No definition available. + Details
Name: | vnet_DepositarySharesIssuedValue
Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Profit or loss as represented on the statement of changes in equity. + References No definition available. + Details
Name: | vnet_EquityProfitLoss
Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Noncontrolling Interest, Change from Sale of Parent Equity Interest + References No definition available. + Details
Name: | vnet_NoncontrollingInterestChangeFromSaleOfParentEquityInterest
Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Settlement Of Earn-out Consideration Associated With An Acquisition, Shares + References No definition available. + Details
Name: | vnet_SettlementOfEarnoutConsiderationAssociatedWithAcquisitionShares
Namespace Prefix: | vnet_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Settlement Of Earn-out Consideration Associated With An Acquisition, Value + References No definition available. + Details
Name: | vnet_SettlementOfEarnoutConsiderationAssociatedWithAcquisitionValue
Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Settlement of Share Options with Shares Held by Depository Bank, Shares + References No definition available. + Details
Name: | vnet_SettlementOfShareOptionsWithSharesHeldByDepositoryBankShares
Namespace Prefix: | vnet_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Settlement of Share Options with Shares Held by Depository Bank, Value + References No definition available. + Details
Name: | vnet_SettlementOfShareOptionsWithSharesHeldByDepositoryBankValue
Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount appropriated from net profit to statutory reserves according to the regulations and laws of PRC. + References No definition available. + Details
Name: | vnet_StatutoryReserve
Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Stock Issued Share for Restricted Shares Vested + References No definition available. + Details
Name: | vnet_StockIssuedShareForRestrictedSharesVested
Namespace Prefix: | vnet_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock Issued Value for Restricted Shares Vested + References No definition available. + Details
Name: | vnet_StockIssuedValueForRestrictedSharesVested
Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration