Stock-based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	9 Months Ended
	Jun. 25, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Unrecognized stock-based compensation expense
Unrecognized stock compensation expense			$ 139.1
Weighted average remaining period (in years)			2 years 8 months 15 days
2015 Stock Plan
Unrecognized stock-based compensation expense
Expiration period (in years)	10 years
Shares available for future issuance (in shares)	750,000		1,233,829
2023 Inducement Plan
Unrecognized stock-based compensation expense
Expiration period (in years)		10 years
Shares available for future issuance (in shares)			21,193
Common stock, capital shares reserved for future issuance (in shares)			500,000
2015 Stock Plan And Inducement Plan
Unrecognized stock-based compensation expense
Common stock granted and issuable (in shares)			2,440,005
Stock Options
Unrecognized stock-based compensation expense
Proceeds resulting from exercise of stock options			$ 57.1	$ 26.2
Total intrinsic value of options exercised			$ 132.5	$ 51.0
Weighted-average grant date fair value of options (in dollars per share)			$ 155.41	$ 219.02
Stock Options | 2015 Stock Plan
Unrecognized stock-based compensation expense
Expiration period (in years)			10 years
Restricted Stock Units (RSUs)
Unrecognized stock-based compensation expense
Equity award other than options, nonvested (in shares)			502,867		376,117
Weighted average grant date fair value (in dollars per share)			$ 233.42		$ 241.45
Restricted Stock Units (RSUs) | 2015 Stock Plan
Unrecognized stock-based compensation expense
Equity award other than options, nonvested (in shares)			502,867
Weighted average grant date fair value (in dollars per share)			$ 233.42
Performance-Based Restricted Stock Units (PSUs)
Unrecognized stock-based compensation expense
Equity award other than options, nonvested (in shares)			92,760		50,000
Weighted average grant date fair value (in dollars per share)			$ 257.77		$ 146.37