Stockholders' Equity (Deficit) - Narrative (Details)	Mar. 25, 2024 vote shares	Jun. 30, 2024 vote class shares	Feb. 29, 2024 shares	Dec. 31, 2023 shares
Class of Stock [Line Items]
Classes of common stock | class		3
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000		0
Shares reserved (in shares)		78,401,978		139,700,734
Annual increase in shares under Incentive Plan as a percent of common shares outstanding			0.05
Maximum shares authorized to be issued upon exercise of stock options (in shares)			185,735,952
2024 Plan
Class of Stock [Line Items]
Shares reserved (in shares)		37,669,497	31,747,592	0
Class A common stock
Class of Stock [Line Items]
Number of votes per share | vote		1
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000		189,000,000
Conversion of redeemable convertible preferred stock into common stock in connection with initial public offering (in shares)	5,104,017
Class B common stock
Class of Stock [Line Items]
Number of votes per share | vote		10
Conversion ratio		1
Conversion of common stock, percent held threshold (as a percent)		0.075
Common stock, shares authorized (in shares)	140,000,000	140,000,000		142,000,000
Conversion of redeemable convertible preferred stock into common stock in connection with initial public offering (in shares)	67,917,432
Class C common stock
Class of Stock [Line Items]
Number of votes per share | vote	0
Common stock, shares authorized (in shares)	100,000,000	100,000,000		0