XML 121 R107.htm IDEA: XBRL DOCUMENT v3.20.4

Subsequent Event (Details) - Revolving credit facility - Amended facility - USD ($)	Sep. 30, 2021	Feb. 22, 2021	Jul. 31, 2018	Dec. 23, 2016
Subsequent Event [Line Items]
Maximum aggregate principal commitment			$ 350,000,000.0	$ 300,000,000.0
Forecast
Subsequent Event [Line Items]
Maximum aggregate principal commitment	$ 250,000,000.0
Subsequent event
Subsequent Event [Line Items]
Minimum unrestricted cash required for borrowing		$ 150,000,000.0
Maximum aggregate principal commitment		$ 300,000,000.0

X

- Definition

Debt Covenant, Unrestricted Cash Required For Borrowing, Minimum

+ References

No definition available.

+ Details

Name:	mygn_DebtCovenantUnrestrictedCashRequiredForBorrowingMinimum
Namespace Prefix:	mygn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

Name:	us-gaap_DebtInstrumentAxis=mygn_AmendmentToCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: