v3.26.3
Equity Awards - Narrative (Detail)
$ / shares in Units, shares in Thousands, $ in Millions
9 Months Ended 12 Months Ended
May 21, 2026
shares
Jun. 01, 2023
shares
Sep. 30, 2026
USD ($)
plan
$ / shares
shares
Sep. 30, 2025
USD ($)
Dec. 31, 2021
USD ($)
tranche
Dec. 31, 2025
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 38,000 50,000        
Fair value of stock options vested     $ 75      
Weighted average grant date fair value (in dollars per share) | $ / shares     $ 88.81      
Total unrecognized compensation cost, adjusted for estimated forfeitures, related to unvested stock options     $ 168      
Common stock options, RSUs and ESPP obligations            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Remaining weighted-average period (in years)     2 years      
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     39,300      
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     2,500      
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     41,808     26,011
Aggregate intrinsic value, vested     $ 1,300      
Aggregate intrinsic value, outstanding     5,600      
Aggregated intrinsic value, expected to vest     4,900      
Unrecognized compensation expense expected to be recognized     $ 4,200      
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     $ 151 $ 119    
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)     250.00%      
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 | 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  
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