XML 141 R77.htm IDEA: XBRL DOCUMENT
v3.24.0.1

STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-Based Compensation Expense [Line Items] |  |  |
Total stock-based compensation expense | $ 40.7 | $ 38.1 | $ 36.3
Cost of testing revenue |  |  |
Share-Based Compensation Expense [Line Items] |  |  |
Total stock-based compensation expense | 1.4 | 1.7 | 1.5
Cost of other revenue |  |  |
Share-Based Compensation Expense [Line Items] |  |  |
Total stock-based compensation expense | 0.0 | 0.0 | 0.1
Research and development expense |  |  |
Share-Based Compensation Expense [Line Items] |  |  |
Total stock-based compensation expense | 4.0 | 5.2 | 4.2
Selling, general, and administrative expense |  |  |
Share-Based Compensation Expense [Line Items] |  |  |
Total stock-based compensation expense | $ 35.3 | $ 31.2 | $ 30.5

X
- 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
Name: | us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=mygn_CostOfTestingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=mygn_CostOfOtherRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_ResearchAndDevelopmentExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |