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Assets Held for Sale (Detail) $ in Thousands |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 17, 2020 USD ($) development_site | Dec. 15, 2020 USD ($) | Oct. 08, 2019 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Impairment charges |  |  |  |  | $ 7,306 | $ 15,790 | $ 0
Ownership percentage |  |  | 20.00% |  | 20.00% |  |
New York 12 | Held-for-Sale |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Impairment charges |  |  |  |  |  | 15,800 |
GIC Private Limited | GIC, Singapore Sovereign Wealth Fund |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Ownership percentage |  |  | 80.00% |  | 80.00% |  |
EMEA Joint Venture | Disposed of by sale | Paris 9 Data Center |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Contingent consideration |  |  |  |  | $ 17,700 |  |
EMEA Joint Venture | Disposed of by sale | London 10 And Paris 8 Data Centers |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Obligation to complete future construction |  |  | $ 41,400 |  | 46,000 |  |
EMEA Joint Venture | Disposed of by sale | London 10 And Paris 8 Data Centers | Equinix, Inc. |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Ownership interest |  |  | 20.00% |  |  |  |
EMEA Joint Venture | Equinix, Inc. | Disposed of by sale | Paris 9 Data Center |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Proceeds from sale of data centers |  | $ 124,600 |  |  |  |  |
Consideration |  | 131,500 |  |  |  |  |
Fair value of contract asset |  | $ 5,600 |  |  |  |  |
EMEA Joint Venture | Equinix, Inc. | Disposed of by sale | London 10 And Paris 8 Data Centers |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Proceeds from sale of data centers |  |  | $ 351,800 |  |  |  |
Accounts receivable acquired in sale of asset |  |  | 41,900 |  |  |  |
Contingent consideration |  |  | $ 39,300 |  |  |  |
EMEA Joint Venture | Equinix, Inc. | Disposed of by sale | xScale |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Gain (loss) on sale |  |  |  |  |  | 45,100 |
EMEA Joint Venture | Equinix, Inc. | Disposed of by sale | xScale | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Contingent consideration |  |  |  |  | $ 44,200 | $ 40,100 |
Asia-Pacific Joint Venture | Equinix, Inc. | Disposed of by sale | Asia-Pacific Joint Venture |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Impairment charges |  |  |  | $ 7,300 |  |  |
Number Of Development Sites | development_site | 3 |  |  |  |  |  |
Proceeds from sale of data centers | $ 209,800 |  |  |  |  |  |
Accounts receivable acquired in sale of asset | $ 15,600 |  |  |  |  |  |

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