Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions				1 Months Ended
	May 23, 2024	Dec. 27, 2023	Dec. 01, 2022	May 31, 2024	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023
Business Acquisition [Line Items]
Goodwill						$ 5,770.3	$ 4,939.7
NexPharm Parent HoldCo, LLC and Isopro Holdings, LLC
Business Acquisition [Line Items]
Cash	$ 2.3
Goodwill	816.5
Property and equipment	108.5
Other assets and liabilities, net	(0.3)
Acquisition date fair value of consideration transferred	927.0
Less:
Cash acquired	(2.3)
Cash paid, net of cash acquired	$ 924.7			$ 924.7
Biopharma Global Inc
Business Acquisition [Line Items]
Cash		$ 302.7
Acquired IPR&D		196.0
Goodwill		853.9
Other assets and liabilities, net		(14.3)
Acquisition date fair value of consideration transferred		1,338.5
Less:
Cash acquired		(302.7)
Cash paid, net of cash acquired		$ 1,035.8
Akouos Acquisition
Business Acquisition [Line Items]
Cash			$ 153.2
Acquired IPR&D			184.0
Goodwill			185.6
Other assets and liabilities, net			24.5
Acquisition date fair value of consideration transferred			547.3
Less:
Cash acquired			(153.2)
Fair value of CVR liability			$ (66.9)
Cash paid, net of cash acquired					$ 327.2