v3.25.4
Employee Incentive Plans - Narrative (Details)
1 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Jan. 31, 2026
USD ($)
numberOfIncentivePlan
offering_period
$ / shares
shares
Jan. 31, 2025
USD ($)
$ / shares
shares
Jan. 31, 2024
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of equity incentive plans | numberOfIncentivePlan       2    
Options to purchase common stock outstanding (in shares) | shares       1,070,000 2,199,000  
Number of options, granted (in shares) | shares       0 0 0
Grant date fair value of vested stock options       $ 1,000,000 $ 16,000,000 $ 48,000,000
Intrinsic value of options exercised       109,000,000 213,000,000 57,000,000
Exercise of stock option, windfall tax benefit       24,000,000 47,000,000 0
Issuance of common stock under employee stock purchase plan, net of cancellations       41,000,000 42,000,000  
Defined contribution plan, employer contribution amount       $ 17,000,000 18,000,000 19,000,000
Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expiration period (years)       10 years    
Vesting period       4 years    
Stock options | Vesting tranche one            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       1 year    
Vesting percentage       25.00%    
RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares granted in period | shares       4,855,252    
Grants in period, aggregate fair value       $ 491,000,000    
Unrecognized compensation costs related to unvested restricted stock units       $ 528,000,000    
Weighted average stock-based compensation recognition period       1 year 9 months 18 days    
Fair value of units vested       $ 460,000,000 375,000,000 335,000,000
RSUs | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Requisite service period       3 years    
RSUs | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Requisite service period       4 years    
Market-based RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares granted in period | shares       327,000    
Unrecognized compensation costs related to unvested restricted stock units       $ 46,000,000    
Weighted average stock-based compensation recognition period       10 months 24 days    
Fair value of units vested       $ 16,000,000 $ 7,000,000 $ 0
Requisite service period       3 years    
Expected volatility       58.40%    
Risk free interest rate       3.87%    
Expected dividend yield       0.00%    
Market-based RSUs | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Earn rate, percent of targeted shares 0.00% 0.00% 0.00%      
Market-based RSUs | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Earn rate, percent of targeted shares 200.00% 200.00% 200.00%      
Market-based RSUs | Vesting tranche one            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting percentage       0.33%    
Market-based RSUs | Vesting tranche two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting percentage       0.33%    
Market-based RSUs | Vesting tranche three            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting percentage       0.33%    
Restricted stock awards | Spera Cybersecurity            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation costs related to unvested restricted stock units       $ 20,000,000    
Weighted average stock-based compensation recognition period       1 year 9 months 18 days    
ESPP            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation costs related to unvested restricted stock units       $ 14,000,000    
Weighted average stock-based compensation recognition period       10 months 24 days    
Expected dividend yield       0.00% 0.00% 0.00%
ESPP offering period       12 months    
Number of offering periods | offering_period       2    
ESPP length of purchase period       6 months    
Number of shares issued under ESPP | shares       578,230 586,149  
Weighted average price, shares issued under ESPP (in dollars per share) | $ / shares       $ 71.34 $ 71.68  
ESPP | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expected volatility       31.00% 42.00% 46.00%
ESPP | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expected volatility       58.00% 44.00% 74.00%
2017 Equity Incentive Plan | Class A Common Stock             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Options to purchase common stock outstanding (in shares) | shares       739,356    
2017 Equity Incentive Plan | Class B Common Stock             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Options to purchase common stock outstanding (in shares) | shares       330,688