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Goodwill and Intangible Assets - Narrative (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 01, 2022 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2020
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill impairment charge |  |  | $ 0 | $ 0 | $ 0 |
Estimated remaining useful life |  |  |  | 14 years 4 months 24 days | 14 years 7 months 6 days |
Impairment of long-lived assets |  |  | $ 0 | $ 0 | $ 0 | $ 17,700,000
Customer relationships |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Gross carrying amount, amortizable |  |  |  | $ 1,600,000 |  |
Estimated remaining useful life |  |  |  | 10 years |  |
Customer relationships | Gateway Genomics, LLC |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Identifiable intangible assets | $ 1,600,000 |  |  |  |  |
Trademarks |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Gross carrying amount, amortizable |  |  |  | $ 6,100,000 |  |
Estimated remaining useful life |  |  |  | 10 years |  |
Trademarks | Gateway Genomics, LLC |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Identifiable intangible assets | 6,100,000 |  |  |  |  |
Developed technologies |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Gross carrying amount, amortizable |  |  |  | $ 625,000,000.0 | $ 616,600,000 |
Estimated remaining useful life |  |  |  | 14 years 4 months 24 days | 14 years 7 months 6 days |
Developed technologies | Gateway Genomics, LLC |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Identifiable intangible assets | $ 10,100,000 |  |  |  |  |
Developed technologies | Minimum |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Estimated remaining useful life |  |  |  | 8 years |  |
Developed technologies | Maximum |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Estimated remaining useful life |  |  |  | 13 years |  |
Myriad Autoimmune reporting unit |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill impairment charge |  | $ 80,700,000 |  |  |  |
Clinic reporting unit |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill impairment charge |  |  |  |  |  | $ 1,300,000

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