v3.26.1
MERGER, INTEGRATION, AND RESTRUCTURING RELATED COSTS (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
May 11, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Restructuring Cost and Reserve [Line Items]            
Merger and integration related costs   $ 35.0 $ 0.0 $ 45.0 $ 0.0  
Merger-related personnel and severance costs   44.8 0.0 44.8 0.0  
Other restructuring costs   0.0 0.0 0.0 (0.9)  
Total merger, integration, and restructuring related costs   79.8 0.0 89.8 (0.9)  
Severance costs       8.1    
Accrued compensation and benefits   56.6   56.6   $ 36.7
Payments for restructuring         5.2  
Stock-based compensation expense   39.6 $ 23.8 59.9 48.0  
Udemy, Inc.            
Restructuring Cost and Reserve [Line Items]            
Merger-related personnel and severance costs       19.7    
Payments for retention of employees $ 26.3          
Payments for retention agreements       10.4    
Accrued compensation and benefits   $ 9.3   9.3    
Equity Awards Attributable To Post-Combination Services            
Restructuring Cost and Reserve [Line Items]            
Accelerated share-based compensation expense       $ 15.8    
Restricted Stock Units and Stock Options            
Restructuring Cost and Reserve [Line Items]            
Stock-based compensation expense         (1.6)  
Employee Severance            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges         $ 0.7