XML 103 R49.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Summary of Significant Accounting Policies - Income Taxes (Details) | Jun. 28, 2024
--- | ---
Accounting Policies [Abstract] |
Minimum likelihood of tax benefits being recognized upon ultimate settlement | 50.00%

X
- Definition Percentage Of Income Tax Examination Minimum Likelihood of Tax Benefits Being Realized Upon Settlement + References No definition available. + Details
Name: | mrcy_PercentageOfIncomeTaxExaminationMinimumLikelihoodOfTaxBenefitsBeingRealizedUponSettlement
Namespace Prefix: | mrcy_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

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