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STOCK-BASED COMPENSATION - Summary of Stock Plans (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Oct. 01, 2010 | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Repurchase of common stock |  | $ 419,291 | $ 318,068 | $ 186,645
Class A Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Repurchase of common stock (in shares) |  | 4,700,000 | 3,800,000 |
EIP |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock options granted (in shares) |  | 100,000 | 300,000 |
Grant date fair value of options granted during period |  | $ 1,600 | $ 3,600 |
Fair value of options vested |  | 2,400 | 2,400 |
Intrinsic value of options exercised |  | $ 11,400 | $ 28,900 |
Stock options outstanding, unvested (in shares) |  | 300,000 | 500,000 |
Outstanding, weighted average grant date fair value (in dollars per share) |  | $ 12.73 | $ 11.64 |
Stock options outstanding (in shares) |  | 1,300,000 | 1,400,000 |
Outstanding, weighted average exercise price (in dollars per share) |  | $ 49.34 | $ 44.86 |
Restricted stock granted (in shares) |  | 1,154,622 |  |
Repurchase of common stock (in shares) |  | 300,000 |  |
Repurchase of common stock |  | $ 29,300 |  |
EIP | Stock Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options available for future grant (in shares) |  | 8,600,000 | 9,300,000 |
Stock option expiration period |  | 10 years |  |
Stock option vesting period |  | 5 years |  |
EIP | Restricted Stock | Class A Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Aggregate fair value of all awards issued |  | $ 59,600 | $ 49,800 |
EIP | Restricted Stock Units (RSUs) | Class A Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted stock granted (in shares) |  | 1,100,000 |  |
Aggregate fair value of all awards issued |  | $ 89,900 |  |
Annual Incentive Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock option vesting period | 3 years |  |  |
Officer | Annual Incentive Plan | Restricted Stock | Class A Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock option vesting period |  | 3 years |  |
Stock issued upon conversion (in shares) |  | 1 |  |
Director | EIP | Restricted Stock | Class A Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock option vesting period |  | 1 year |  |
Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grant date share price (in dollars per share) |  | $ 41.65 |  |
Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grant date share price (in dollars per share) |  | $ 89.78 |  |

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