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Restructuring - Additional Information (Detail) (2014 Restructuring Plan)
 3 Months Ended
Mar. 31, 2015
Employee
Restructuring Cost and Reserve [Line Items]  
Number of workforce expected to be reduced 777us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
Domestic
  
Restructuring Cost and Reserve [Line Items]  
Number of workforce expected to be reduced 217us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
/ us-gaap_RestructuringPlanAxis
= mstr_TwentyFourteenRestructuringPlanMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Asia Pacific
  
Restructuring Cost and Reserve [Line Items]  
Number of workforce expected to be reduced 400us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
/ us-gaap_RestructuringPlanAxis
= mstr_TwentyFourteenRestructuringPlanMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
EMEA
  
Restructuring Cost and Reserve [Line Items]  
Number of workforce expected to be reduced 141us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
/ us-gaap_RestructuringPlanAxis
= mstr_TwentyFourteenRestructuringPlanMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
Latin America
  
Restructuring Cost and Reserve [Line Items]  
Number of workforce expected to be reduced 19us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
/ us-gaap_RestructuringPlanAxis
= mstr_TwentyFourteenRestructuringPlanMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_LatinAmericaMember