Stockholders' Equity - Share-based Compensation Plans (Detail) shares in Millions |
9 Months Ended | |
|---|---|---|
|
Sep. 30, 2020
plan
|
Jan. 01, 2020
shares
|
|
| Share-based Compensation Arrangement by Share-based Payment Award | ||
| Share-based employee compensation plans, number | plan | 2 | |
| Equity Incentive Plan 2012 | ||
| Share-based Compensation Arrangement by Share-based Payment Award | ||
| Equity incentive plan shares authorized (in shares) | shares | 171 | |
| Shares reserved for issuance increase, percentage | 2.50% | |
| Restricted Stock Units (RSUs) | Equity Incentive Plan 2012 | ||
| Share-based Compensation Arrangement by Share-based Payment Award | ||
| Vesting service period | 4 years |