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Business Combinations - Narrative (Details) - USD ($) shares in Millions, $ in Millions			1 Months Ended	8 Months Ended
	Aug. 02, 2021	Mar. 12, 2021	Mar. 31, 2021	Mar. 31, 2022
HalioDx SAS
Business Acquisition [Line Items]
Equity interest acquired	100.00%
HalioDx Inc.
Business Acquisition [Line Items]
Equity interest acquired	100.00%
HalioDx
Business Acquisition [Line Items]
Considerations paid in acquisition	$ 319.6
Value of shares transferred in acquisition	$ 147.1
Shares transferred in acquisition (in shares)	3.3
Incurred liabilities in acquisition	$ 4.2
Measurement period adjustments, increase to goodwill				$ 0.2
Decipher Biosciences
Business Acquisition [Line Items]
Equity interest acquired		100.00%
Considerations paid in acquisition		$ 594.7
Decipher Biosciences \| Dr. Tina S. Nova, Ph.D.
Business Acquisition [Line Items]
Payments to board of directors members			$ 26.5
Decipher Biosciences \| Dr. Robert S. Epstein, M.D., M.S.
Business Acquisition [Line Items]
Payments to board of directors members			$ 1.4