Name:	mstr_DebtInstrumentConvertibleNetCarryingAmountOfEquityComponent
Namespace Prefix:	mstr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt issuance costs allocated to equity.

No definition available.

Name:	mstr_DebtIssuanceCostsAllocatedToEquity
Namespace Prefix:	mstr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Deferred tax liability related to debt discount, net of deferred tax asset related to issuance costs allocated to equity, recorded against APIC.

No definition available.

Name:	mstr_DeferredTaxLiabilitiesNetAssetsRelatedToDebtDiscountAndIssuanceCosts
Namespace Prefix:	mstr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870

Name:	us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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.

No definition available.