Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Liabilities
Increase in fair value of contingent consideration liability	$ 1.5
Miromatrix
Liabilities
Increase in fair value of contingent consideration liability	1.4
Recurring fair value measurements | Other income (expense), net
Liabilities
Net unrealized gain (loss) on securities	5.6	$ (8.8)
Recurring fair value measurements | Level 1
Assets
Total assets	457.0		$ 549.8
Liabilities
Contingent consideration	0.0		0.0
Total liabilities	0.0		0.0
Recurring fair value measurements | Level 1 | Money market funds
Assets
Total assets	99.7		408.5
Recurring fair value measurements | Level 1 | Time deposits
Assets
Total assets	336.8		126.4
Recurring fair value measurements | Level 1 | U.S. government and agency securities
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 1 | Corporate debt securities
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 1 | Equity securities
Assets
Total assets	20.5		14.9
Recurring fair value measurements | Level 2
Assets
Total assets	2,969.3		3,757.2
Liabilities
Contingent consideration	0.0		0.0
Total liabilities	0.0		0.0
Recurring fair value measurements | Level 2 | Money market funds
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 2 | Time deposits
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 2 | U.S. government and agency securities
Assets
Total assets	2,398.6		3,032.6
Recurring fair value measurements | Level 2 | Corporate debt securities
Assets
Total assets	570.7		724.6
Recurring fair value measurements | Level 2 | Equity securities
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 3
Assets
Total assets	0.0		0.0
Liabilities
Contingent consideration	22.6		21.1
Total liabilities	22.6		21.1
Recurring fair value measurements | Level 3 | Money market funds
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 3 | Time deposits
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 3 | U.S. government and agency securities
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 3 | Corporate debt securities
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Level 3 | Equity securities
Assets
Total assets	0.0		0.0
Recurring fair value measurements | Balance
Assets
Total assets	3,426.3		4,307.0
Liabilities
Contingent consideration	22.6		21.1
Total liabilities	22.6		21.1
Recurring fair value measurements | Balance | Money market funds
Assets
Total assets	99.7		408.5
Recurring fair value measurements | Balance | Time deposits
Assets
Total assets	336.8		126.4
Recurring fair value measurements | Balance | U.S. government and agency securities
Assets
Total assets	2,398.6		3,032.6
Recurring fair value measurements | Balance | Corporate debt securities
Assets
Total assets	570.7		724.6
Recurring fair value measurements | Balance | Equity securities
Assets
Total assets	$ 20.5		$ 14.9