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Schedule of Valuation and Qualifying Accounts | 12 Months Ended
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Jun. 30, 2017
Valuation And Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts | MYRIAD GENETICS, INC. Schedule of Valuation and Qualifying Accounts Years Ended June 30, 2017, 2016 and 2015 (In millions)
|  | Balance at Beginning of Period |  |  | Addition Charged to Cost and Expenses |  |  | Net Deductions and Other (1) |  |  | Balance at End of Period |
Allowance for doubtful accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended June 30, 2017 |  | $ | 6.8 |  |  | $ | 37.3 |  |  | $ | (35.9 | ) |  | $ | 8.2 |
Year ended June 30, 2016 |  | $ | 7.6 |  |  | $ | 33.3 |  |  | $ | (34.1 | ) |  | $ | 6.8 |
Year ended June 30, 2015 |  | $ | 9.0 |  |  | $ | 31.5 |  |  | $ | (32.9 | ) |  | $ | 7.6 |
(1) | Primarily represents the write-off of accounts receivables net of recoveries.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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