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Balance Sheet Components - Schedule of Operating Lease Right-of-Use Assets, Net (Details) - USD ($) $ in Thousands | Jul. 31, 2022 | Jan. 31, 2022
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Balance Sheet Related Disclosures [Abstract] |  |
Operating lease right-of-use assets | $ 290,210 | $ 290,808
Less: accumulated amortization | (136,606) | (118,000)
Operating lease right-of-use assets, net | $ 153,604 | $ 172,808

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- Definition Operating lease right of use Asset, gross. + References No definition available. + Details
Name: | box_OperatingLeaseRightOfUseAssetGross
Namespace Prefix: | box_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Operating lease right of use assets accumulated amortization. + References No definition available. + Details
Name: | box_OperatingLeaseRightOfUseAssetsAccumulatedAmortization
Namespace Prefix: | box_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_BalanceSheetRelatedDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant