Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended				3 Months Ended							12 Months Ended
	Aug. 04, 2021	Aug. 31, 2023	Jan. 31, 2023	Aug. 31, 2022	Aug. 31, 2021	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2023
Class of Stock [Line Items]
Common stock, authorized shares (in shares)								500,000,000					500,000,000
Common stock, par value (in dollars per share)								$ 0.01					$ 0.01
Common stock, issued shares (in shares)								135,653,731					147,977,960
Common stock, outstanding shares (in shares)								135,653,731					147,977,960
Offering price per share (in dollars per share)								$ 20.00			$ 25.00
Payments of stock issuance costs								$ 16.2			$ 17.5
Preferred stock, authorized (in shares)								200,000,000					200,000,000
Preferred stock, par value (in shares)								$ 0.01					$ 0.01
Preferred stock, shares issued (in shares)								0					0
Preferred stock, shares outstanding (in shares)								0					0
Public Stock Offering
Class of Stock [Line Items]
Shares sold in offering (in shares)								13,750,000			11,500,000
Aggregate net proceeds from stock offering								$ 258.8			$ 270.1
Over-Allotment Option
Class of Stock [Line Items]
Shares sold in offering (in shares)											1,500,000
ATM Program
Class of Stock [Line Items]
Offering price per share (in dollars per share)													$ 24.12
Aggregate net proceeds from stock offering													$ 152.2
Common stock authorized, aggregate gross sales proceeds (up to)												$ 250.0
Remaining authorized amount (in shares)													$ 58.7
Motus Biosciences, Inc.
Class of Stock [Line Items]
Common stock shares reserved for issuance (in shares)						9,406,112							9,406,112
Shares issued in acquisition (in shares)	2,889,367	177,203		171,427	171,427	177,203			171,427	2,889,367
Contingent consideration	$ 35.0
Shares sold in offering (in shares)													6,503,041
Adrestia Therapeutics Ltd
Class of Stock [Line Items]
Issuance of common stock for business acquisition (in shares)							3,430,867
Vertuis Bio, Inc.
Class of Stock [Line Items]
Common stock shares reserved for issuance (in shares)			550,000
Issuance of common stock for business acquisition (in shares)			500,000
Contingent consideration													$ 1.0
Convertible notes
Class of Stock [Line Items]
Common stock shares reserved for issuance (in shares)													23,438,430
Common stock options
Class of Stock [Line Items]
Common stock shares reserved for issuance (in shares)													22,512,569
RSUs
Class of Stock [Line Items]
Common stock shares reserved for issuance (in shares)													2,750,294
PSUs
Class of Stock [Line Items]
Common stock shares reserved for issuance (in shares)													666,382