Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions |
3 Months Ended |
9 Months Ended |
Apr. 29, 2023 |
Apr. 30, 2022 |
Apr. 29, 2023 |
Apr. 30, 2022 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Period of average share price |
|
|
7 days
|
|
| Stock-based compensation expense, increase (decrease) |
|
|
$ (4.4)
|
|
| Unrecognized compensation expense related to unvested options and RSUs, net of forfeitures |
$ 138.6
|
|
$ 138.6
|
|
| Unrecognized compensation expense related to unvested options weighted average recognition period |
|
|
2 years 1 month 6 days
|
|
| Weighted-average grant date fair value of options (in dollars per share) |
|
|
$ 2.93
|
$ 7.16
|
| Employees |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Stock-based compensation expense, increase (decrease) |
$ 22.6
|
$ 31.6
|
$ 80.2
|
$ 96.3
|
| Stock Options |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Options exercisable period |
|
|
10 years
|
|
| 2011 Equity Incentive Plan | Stock Options |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Employee stock options vesting percentage |
|
|
25.00%
|
|
| Award vesting period |
|
|
3 years
|
|
| 2017 Incentive Plan | Class A Common Stock |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Number of shares authorized for issuance (in shares) |
38,257,771
|
|
38,257,771
|
|
| 2017 Incentive Plan | Stock Options |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Options exercisable period |
|
|
10 years
|
|
| 2017 Incentive Plan | Stock Options | First Anniversary |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Award vesting period |
|
|
6 months
|
|
| 2017 Incentive Plan | Stock Options | Second Anniversary |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Award vesting period |
|
|
30 months
|
|
| 2019 Inducement Plan | Class A Common Stock |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Number of shares authorized for issuance (in shares) |
10,750,000
|
|
10,750,000
|
|