XML 62 R53.htm IDEA: XBRL DOCUMENT
v3.22.1

Preferred and Common Stockholders' Equity - Common Shares Issued and Outstanding (Details) - shares shares in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Common shares issued and outstanding |  |
Beginning common stock issued | 80.0 | 75.4
Beginning common stock outstanding | 80.0 | 75.4
Common stock issued upon exercise of options, vesting of restricted stock units, and purchases under employee stock purchase plan | 0.3 | 1.3
Common stock issued at end of period | 80.3 | 76.7
Common stock outstanding at end of period | 80.3 | 76.7

X
- Definition Stock Issued During Period, Shares, Share-Based Payment Arrangement And Employee Stock Purchase Plans + References No definition available. + Details
Name: | mygn_StockIssuedDuringPeriodSharesShareBasedPaymentArrangementAndEmployeeStockPurchasePlans
Namespace Prefix: | mygn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + 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(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 2: 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(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_IncreaseDecreaseInStockholdersEquityRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration