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Subsequent Events - Additional Information (Detail) - Assurex Health - USD ($) $ in Millions |  | 12 Months Ended
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Aug. 03, 2016 | Jun. 30, 2016
Subsequent Event [Line Items] |  |
Business acquisition, description |  | The Merger Agreement contains certain termination rights for Myriad and Assurex, including the right by either party to terminate the Merger Agreement if the Merger has not occurred within two months of the signing of the Merger Agreement. The Closing is expected to occur before the end of the first quarter of Myriad’s fiscal year 2017, and is subject to customary closing conditions and regulatory approval including, among others, antitrust clearance under the Hart-Scott-Rodino Antitrust Improvements Act of 1976. Myriad intends to fund the transaction through cash on hand and possibly short-term debt. The acquisition is not subject to a financing contingency. The Merger Agreement was approved by the Board of Directors of both Myriad and Assurex, and is conditioned on receiving the requisite stockholder approval of the Assurex stockholders.
Subsequent Event |  |
Subsequent Event [Line Items] |  |
Aggregate cash purchase price | $ 225 |
Additional payments upon completion of performance-based milestones | $ 185 |

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- Definition With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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- 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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- Details
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