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DIVESTITURES - Schedule of Amounts Recognized in Other Income (Details) - USD ($) $ in Millions			12 Months Ended
	Sep. 13, 2021	Jul. 01, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disposal of Subsidiary [Line Items]
Total other income (expense)			$ (4.4)	$ 0.6	$ 139.3
Disposed of by Sale
Disposal of Subsidiary [Line Items]
Loss on inventory					(11.7)
Other					(0.6)
Gain on sale of Myriad RBM, Inc. | Disposed of by Sale
Disposal of Subsidiary [Line Items]
Gain (loss) on sale of subsidiary		$ 121.0			121.0
Gain on sale of the Myriad myPath, LLC laboratory | Disposed of by Sale
Disposal of Subsidiary [Line Items]
Gain (loss) on sale of subsidiary					31.2
Loss on sale of Myriad Autoimmune assets | Disposed of by Sale
Disposal of Subsidiary [Line Items]
Gain (loss) on sale of subsidiary	$ (0.6)				$ (0.6)

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- Definition

Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
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-Name Accounting Standards Codification
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-Publisher FASB
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Amount of income (expense) related to nonoperating activities, classified as other.

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