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Stock-Based Compensation - Summary of Restricted Stock Unit ("RSU") and Restricted Stock Activity (Detail)
 9 Months Ended
Sep. 30, 2025
$ / shares
shares
Sep. 30, 2024
Restricted Stock Units Outstanding [Member]    
Number of Shares, Beginning Balance 14,509,717  
Number of Shares, Granted 6,409,003  
Number of Shares, Vested (5,952,489)  
Number of Shares, Forfeited (1,138,230)  
Number of Shares, Ending Balance 13,828,001  
Number of Shares, Expected to vest after June 30, 2025 13,828,001  
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares $ 9.54  
Weighted Average Grant Date Fair Value, Granted | $ / shares 36.92  
Weighted Average Grant Date Fair Value, Vested | $ / shares 12.04  
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 11.77  
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares $ 20.96  
Weighted Average Grant Date Fair Value, Expected to vest 20.96  
Weighted Average Remaining Contractual Term (Years) 2 years 5 months 15 days  
Weighted Average Remaining Contractual Term (Years), Expected to vest   2 years 5 months 15 days
Restricted Stock [Member]    
Number of Shares, Beginning Balance 0  
Number of Shares, Replacement awards 6,176,959  
Number of Shares, Vested (1,927,662)  
Number of Shares, Ending Balance 4,249,297  
Number of Shares, Expected to vest after June 30, 2025 4,249,297  
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares $ 0  
Weighted Average Grant Date Fair Value, Replacement awards | $ / shares 40.34  
Weighted Average Grant Date Fair Value, Vested | $ / shares 40.34  
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares $ 40.34  
Weighted Average Grant Date Fair Value, Expected to vest 40.34  
Weighted Average Remaining Contractual Term (Years) 4 years 6 months 3 days  
Weighted Average Remaining Contractual Term (Years), Expected to vest 4 years 6 months 3 days