v3.22.0.1
Equity Awards - Narrative (Detail)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Jul. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
tranche
shares
Dec. 31, 2021
USD ($)
tranche
plan
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of equity incentive plans | plan     3    
Total intrinsic value of options exercised     $ 140 $ 199 $ 138
Weighted-average grant date fair value of options granted (in USD per share) | $ / shares     $ 248.85    
Fair value of stock options vested     $ 10 $ 7 $ 8
Total unrecognized compensation cost, adjusted for estimated forfeitures, related to unvested stock options   $ 132 $ 132    
Dividend yield (in percent)     0.00%    
Common stock options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted-average remaining vesting period     3 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   5,500,000 5,500,000    
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   300,000 300,000    
RSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted-average remaining vesting period     3 years    
Number of shares outstanding (in shares) | shares   5,808,000 5,808,000 7,362,000 8,733,000
Aggregate intrinsic value, vested     $ 2,100 $ 1,800 $ 1,400
Aggregate intrinsic value, outstanding   $ 3,800 3,800    
Aggregated intrinsic value, expected to vest   3,400 3,400    
Unrecognized compensation expense expected to be recognized   $ 2,000 $ 2,000    
Performance shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance target (in percent)     100.00%    
Vesting period (in years)     2 years    
Allocated share-based compensation expense $ 29   $ 124 $ 70 $ 68
Minimum | Performance shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance target (in percent)     0.00%    
Maximum | Performance shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance target (in percent)     200.00%    
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    
Number of shares of common stock outstanding, increase, percentage     1.00%    
2005 Stock Plan and 2012 Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock options granted to new employees vest, percentage per annum     25.00%    
Requisite service period to vest employment continuation period     3 years    
Number of vesting tranches | tranche   8 8    
Options granted, exercisable period     10 years    
2021 Performance Awards | Common stock options | Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of vesting tranches | tranche   8 8    
Shares granted, value, share-based payment arrangement, before forfeiture   $ 232      
2021 Performance Awards | Common stock options | Chief Executive Officer | Tranche one          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage   12.50%      
2021 Performance Awards | Common stock options | Chief Executive Officer | Tranche two          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage   12.50%      
2021 Performance Awards | Common stock options | Chief Executive Officer | Tranche three          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage   12.50%      
2021 Performance Awards | Common stock options | Chief Executive Officer | Tranche four          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage   12.50%      
2021 Performance Awards | Common stock options | Chief Executive Officer | Tranche five          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage   12.50%      
2021 Performance Awards | Common stock options | Chief Executive Officer | Tranche six          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage   12.50%      
2021 Performance Awards | Common stock options | Chief Executive Officer | Tranche seven          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage   12.50%      
2021 Performance Awards | Common stock options | Chief Executive Officer | Tranche eight          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage   12.50%      
2021 Performance Awards | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Service period (in years)   2 years      
2021 Performance Awards | Minimum | Common stock options | 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