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Other Assets - Schedule of Other Assets (Detail) - USD ($) $ in Thousands | Jul. 31, 2019 | Jan. 31, 2019
--- | --- | ---
Other Assets [Line Items] |  |
Non-marketable equity and other investments | $ 61,258 | $ 50,546
Prepayments for computing infrastructure platforms | 11,612 | 16,976
Technology patents and other intangible assets, net | 277,953 | 313,240
Deposits | 4,010 | 4,383
Net deferred tax assets | 4,495 | 4,544
Other | 38,818 | 50,576
Total | 138,895 | 147,360
Technology patents and other intangible assets, net |  |
Other Assets [Line Items] |  |
Technology patents and other intangible assets, net | $ 18,702 | $ 20,335

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