Finance lease accumulated deprecation of property and equipment.

No definition available.

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Namespace Prefix:	box_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Gross amount of property and equipment acquired under finance lease.

+ References

No definition available.

+ Details

Name:	box_GrossAmountOfPropertyAndEquipmentAcquiredUnderFinanceLease
Namespace Prefix:	box_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

+ Details

Name:	us-gaap_Depreciation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=box_ServersAndRelatedEquipmentAndConstructionInProgressMember
Namespace Prefix:
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Balance Sheet Components - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021	Jan. 31, 2022
Property Plant And Equipment [Line Items]
Accumulated depreciation of property and equipment acquired under finance lease	$ 219.1		$ 219.1		$ 196.6
Depreciation expense	14.0	$ 16.1	28.8	$ 32.4
Servers and related equipment
Property Plant And Equipment [Line Items]
Gross amount of property and equipment acquired under finance lease	$ 259.5		$ 259.5
Servers And Related Equipment And Construction In Progress
Property Plant And Equipment [Line Items]
Gross amount of property and equipment acquired under finance lease					$ 258.8