Stock-Based Compensation - Narrative (Details)	3 Months Ended	12 Months Ended
	Jun. 30, 2024 shares	Dec. 31, 2025 USD ($) period shares	Dec. 31, 2024 USD ($) shares	Dec. 31, 2023 USD ($) shares
Stock Based Compensation
Stock-based compensation expense | $		$ 354,404,000	$ 274,428,000	$ 191,808,000
Total proceeds | $		$ 25,037,000	17,298,000	15,128,000
2015 Plan
Stock Based Compensation
Additional shares reserved for issuance	6,000,000
Plan extension term	10 years
Employee stock purchase plan
Stock Based Compensation
Shares reserved for issuance		4,953,702
Additional shares reserved for issuance		880,000
Shares reserved for issuance as a proportion of common stock outstanding (as a percent)		1.00%
Price in relation to fair market value of common stock on the date of grant, lower range limit (as a percent)		85.00%
Maximum number of shares a participant may receive during the period (in shares)		5,000
Maximum amount of award or purchase during a calendar year | $		$ 25,000
Maximum offering period, term		27 months
Number of expected offering periods each year | period		2
Offering period, expected term		6 months
Maximum employee contribution of employee's cash compensation (as a percent)		15.00%
Performance-based awards
Stock Based Compensation
Stock-based compensation expense | $		$ 98,800,000	$ 89,800,000	$ 54,200,000
Shares granted		400,000	800,000	500,000
Options to purchase common stock
Stock Based Compensation
Options outstanding (in shares)		3,591,000	3,875,000
Restricted stock units
Stock Based Compensation
Number of shares vested		5,324
Shares granted		3,504
Non-employee stock options
Stock Based Compensation
Options outstanding (in shares)		0