v3.25.1
Equity Awards - Narrative (Detail)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2025
USD ($)
plan
shares
Mar. 31, 2024
USD ($)
Dec. 31, 2021
USD ($)
tranche
Dec. 31, 2024
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of equity incentive plans | plan 3      
Increased in authorized shares (in shares) | shares 10,000,000      
Fair value of stock options vested $ 26      
Granted (in shares) | shares 0      
Total unrecognized compensation cost, adjusted for estimated forfeitures, related to unvested stock options $ 4      
Common stock options, RSUs and ESPP obligations        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Remaining weighted-average period (in years) 1 year      
Restricted stock units with service condition only        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares outstanding (in shares) | shares 6,300,000      
Restricted stock units with service and performance conditions        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares outstanding (in shares) | shares 500,000      
RSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Remaining weighted-average period (in years) 3 years      
Number of shares outstanding (in shares) | shares 6,825,000     5,788,000
Aggregate intrinsic value, vested $ 800      
Aggregate intrinsic value, outstanding 5,400      
Aggregated intrinsic value, expected to vest 4,800      
Unrecognized compensation expense expected to be recognized $ 4,100      
Performance-based RSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares eligible to vest (percent) 100.00%      
Stock-based compensation expense, net of actual and estimated forfeitures $ 43 $ 39    
Performance-based RSUs | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares eligible to vest (percent) 0.00%      
Performance-based RSUs | Minimum | Vesting, tranche one        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting term 1 year      
Performance-based RSUs | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares eligible to vest (percent) 200.00%      
Performance-based RSUs | Maximum | Vesting, tranche one        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting term 3 years      
2012 Employee Stock Purchase Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock purchase price percentage 85.00%      
Award offering period 6 months      
2021 Performance Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Service period (in years) 2 years      
2021 Performance Awards | Employee Stock | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares granted, value, share-based payment arrangement, before forfeiture     $ 232  
Number of vesting tranches | tranche     8  
Options granted, exercisable period 10 years      
2021 Performance Awards | Employee Stock | Minimum | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition     2 years  
2021 Performance Awards | Common stock options, RSUs and ESPP obligations | Vesting, tranche one | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 12.50%      
2021 Performance Awards | Common stock options, RSUs and ESPP obligations | Tranche two | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 12.50%      
2021 Performance Awards | Common stock options, RSUs and ESPP obligations | Tranche three | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 12.50%      
2021 Performance Awards | Common stock options, RSUs and ESPP obligations | Tranche five | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 12.50%      
2021 Performance Awards | Common stock options, RSUs and ESPP obligations | Tranche six | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 12.50%      
2021 Performance Awards | Common stock options, RSUs and ESPP obligations | Tranche seven | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 12.50%      
2021 Performance Awards | Common stock options, RSUs and ESPP obligations | Tranche eight | Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 12.50%