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Balance Sheet Components - Other Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Deferred tax assets, net | $ 66,424 | $ 35,806 |  |
Prepaid expenses | 82,443 | 61,690 |  |
Debt issuance costs, net | 4,261 | 6,395 |  |
Deposits | 69,043 | 56,567 |  |
Restricted cash | 9,691 | 9,946 |  |
Derivative instruments | 2,793 | 32,280 |  |
Contract assets, non-current | 54,050 | 31,521 |  | $ 16,396
Contract costs | 267,978 | 229,205 |  |
Equity method investments | 163,071 | 59,737 |  |
Other assets | 56,293 | 57,641 |  |
Total other assets | 776,047 | 580,788 | $ 469,784 | $ 533,252
Metronode |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Indemnification assets | 42,800 | $ 37,700 |  |
Accounting Standards Update 2018-15 Prospective |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Capitalized CCA implementation costs | $ 21,100 |  |  |

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