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Document and Entity Information
Feb. 06, 2020
Cover [Abstract]  
Document Type 8-K/A
Amendment Flag true
Amendment Description This Amendment No. 1 to the Current Report on Form 8-K (“Amendment”) is being furnished to amend Items 2.02 and 9.01 of the Current Report on Form 8-K furnished on February 6, 2020 announcing the registrant’s financial results for the three and six months ended December 31, 2019 to correct errors with respect to Reconciliation of GAAP to Non-GAAP Financial Measures and the Free Cash Flow Reconciliation used in the non-GAAP financial presentation.  This Amendment does not change the registrant’s GAAP results and guidance provided on February 6, 2020.
Document Period End Date Feb. 06, 2020
Entity Registrant Name MYRIAD GENETICS, INC.
Entity Central Index Key 0000899923
Entity Emerging Growth Company false
Entity File Number 0-26642
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 87-0494517
Entity Address, Address Line One 320 Wakara Way
Entity Address, City or Town Salt Lake City
Entity Address, State or Province UT
Entity Address, Postal Zip Code 84108
City Area Code 801
Local Phone Number 584-3600
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of each class Public Common Stock, $0.01 par value
Trading Symbol MYGN
Name of each exchange on which registered NASDAQ