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STOCKHOLDERS' EQUITY AND STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022 | Sep. 30, 2023 | Dec. 20, 2022 | Sep. 30, 2022 | Jun. 30, 2022
Share-based compensation |  |  |  |  |  |  |
Common stock, shares authorized | 200,000,000 | 200,000,000 |  |  |  |  |
Common stock, par or stated value (in dollars per share) | $ 0.10 | $ 0.10 |  |  |  |  |
Preferred stock, shares authorized | 1,000,000 | 1,000,000 |  |  |  |  |
Preferred stock, par or stated value (in dollars per shares) | $ 1.00 | $ 1.00 |  |  |  |  |
Acquisition of treasury stock | $ 60,502,000 | $ 149,997,000 | $ 58,621,000 |  |  |  |
Treasury stock, at cost (in shares) | 89,700,000 | 87,400,000 |  |  |  |  |
Treasury stock, at cost | $ 2,318,371,000 | $ 2,252,034,000 |  |  |  |  |
Dividends, common stock | $ 0 |  |  |  |  |  |
Total shares reserved for issuance since inception of the stock option and equity compensation plans (in shares) |  | 42,400,000 |  | 46,400,000 |  |  | 37,900,000
Number of available shares (in shares) | 4,000,000 | 4,500,000 |  |  |  |  |
Employee stock purchase plan |  |  |  |  |  |  |
Share-based compensation |  |  |  |  |  |  |
Total shares reserved for issuance since inception of the stock option and equity compensation plans (in shares) |  |  |  |  |  | 1,400,000 | 400,000
Number of available shares (in shares) | 1,000,000 |  |  |  |  |  |
Share-based compensation expense | $ 1,666,000 | $ 2,051,000 | $ 1,803,000 |  |  |  |
Stock Option and Equity Compensation Plans |  |  |  |  |  |  |
Share-based compensation |  |  |  |  |  |  |
Total shares reserved for issuance since inception of the stock option and equity compensation plans (in shares) | 49,000,000 | 45,000,000 |  | 49,000,000 |  | 45,000,000 | 39,500,000
Shares which remained available for future grants (in shares) | 6,800,000 |  |  |  |  |  |
Stock Option and Equity Compensation Plans | Employee stock purchase plan |  |  |  |  |  |  |
Share-based compensation |  |  |  |  |  |  |
Shares which remained available for future grants (in shares) | 900,000 |  |  |  |  |  |
2005 Plan |  |  |  |  |  |  |
Share-based compensation |  |  |  |  |  |  |
Duration of stock options granted |  | 5 years |  |  |  |  |
Share-based compensation expense |  | $ 5,400,000 |  |  |  |  |
Common Stock Repurchase Program |  |  |  |  |  |  |
Share-based compensation |  |  |  |  |  |  |
Stock repurchase program, authorized amount | $ 1,100,000,000 |  |  |  | $ 100,000,000 |  |
Acquisition of treasury stock (in shares) | 2,100,000 | 6,100,000 | 1,300,000 |  |  |  |
Acquisition of treasury stock | $ 60,500,000 | $ 150,000,000 | $ 58,600,000 |  |  |  |
Treasury stock, at cost (in shares) | 37,700,000 |  |  |  |  |  |
Treasury stock, at cost | $ 942,700,000 |  |  |  |  |  |
Stock repurchase program, remaining amount | $ 157,300,000 |  |  |  |  |  |

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