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Divestitures - Narrative (Details) - USD ($) $ in Millions |  |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | ---
May 28, 2021 | May 21, 2021 | May 01, 2021 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Divestitures [Line Items] |  |  |  |  |  |
Proceeds from sale of assets |  |  |  |  | $ 0.0 | $ 32.5
Loss on non-cancelable purchase commitment |  |  |  | $ 5.9 |  |
Loss on inventory |  |  |  | 6.6 | $ 0.0 | $ 6.6
Disposed of by sale | Myriad myPath LLC laboratory |  |  |  |  |  |
Divestitures [Line Items] |  |  |  |  |  |
Proceeds from sale of assets | $ 32.5 |  |  |  |  |
Net gain on sale of assets adjusted for transaction fees |  |  |  | $ 31.2 |  |
Disposed of by sale | Select operating assets and intellectual property of Myriad Autoimmune business unit |  |  |  |  |  |
Divestitures [Line Items] |  |  |  |  |  |
Proceeds from sale of business |  |  | $ 150.0 |  |  |
Disposed of by sale | Myriad RBM, Inc. |  |  |  |  |  |
Divestitures [Line Items] |  |  |  |  |  |
Proceeds from sale of business |  | $ 197.0 |  |  |  |

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