v3.20.2

Equity Awards - Additional Information (Detail) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) incentive_plan shares | Jun. 30, 2019 USD ($) | Mar. 31, 2020 shares | Dec. 31, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of equity incentive plans | incentive_plan | 2 |  |  |
Fair value of stock options vested | $ 1.0 |  |  |
Total unrecognized compensation cost, adjusted for estimated forfeitures, related to unvested stock options | $ 13.0 |  |  |
Options outstanding |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Remaining weighted-average period | 4 years 2 months 12 days |  |  |
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 | 8,700,000 |  |  |
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 |  |  |
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 | $ 30.0 | $ 40.0 |  |
Performance-based RSUs | Vesting, tranche one |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting percentage | 33.00% |  |  |
Performance-based RSUs | Vesting, tranche two |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting term | 2 years |  |  |
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 | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares eligible to vest (percent) | 180.00% |  |  |
Restricted stock units (RSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Remaining weighted-average period | 3 years |  |  |
Number of shares outstanding (in shares) | shares | 9,200,000 |  | 10,082,000 | 8,733,000
Unrecognized compensation expense expected to be recognized | $ 1,700.0 |  |  |
2012 Equity Incentive Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares of common stock outstanding, increase, percentage | 5.00% |  |  |
2012 Equity Incentive Plan | Restricted stock units (RSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting term | 4 years |  |  |
2012 Employee Stock Purchase Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares of common stock outstanding, increase, percentage | 1.00% |  |  |
Common stock purchase price percentage | 85.00% |  |  |
Award offering period | 6 months |  |  |
2005 Equity Incentive 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 |  |  |
Options granted, exercisable period | 10 years |  |  |

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