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Consolidated Statements of Stockholder's Equity - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | ---
Beginning balance at Sep. 30, 2021 | $ 2,038,468 | $ 1,172 | $ 1,718,504 | $ 414,656 | $ (95,864)
Beginning balance (in shares) at Sep. 30, 2021 |  | 117,163,000 |  |  |
Common stock issued for employee stock-based awards | 0 | $ 18 | (18) |  |
Common stock issued for employee stock-based awards (in shares) |  | 1,737,000 |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards | (68,991) | $ (6) | (68,985) |  |
Shares surrendered by employees to pay taxes related to stock-based awards (in shares) |  | (597,000) |  |  |
Common stock issued for employee stock purchase plan | 21,207 | $ 2 | 21,205 |  |
Common stock issued for employee stock purchase plan (in shares) |  | 215,000 |  |  |
Compensation expense from stock-based awards | 174,863 |  | 174,863 |  |
Net Income (Loss) | 313,081 |  |  | 313,081 |
Repurchases of common stock | $ (125,000) | $ (11) | (124,989) |  |
Repurchases of common stock (in shares) | (1,050,000.00) | (1,046,000) |  |  |
Gain/Loss on net investment hedges, net of tax | $ 17,556 |  |  |  | 17,556
Foreign currency translation adjustment | (92,768) |  |  |  | (92,768)
Change in defined benefit pension items, net of tax | 17,618 |  |  |  | 17,618
Ending balance at Sep. 30, 2022 | 2,296,034 | $ 1,175 | 1,720,580 | 727,737 | (153,458)
Ending balance (in shares) at Sep. 30, 2022 |  | 117,472,000 |  |  |
Common stock issued for employee stock-based awards | 0 | $ 18 | (18) |  |
Common stock issued for employee stock-based awards (in shares) |  | 1,798,000 |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards | (82,768) | $ (7) | (82,761) |  |
Shares surrendered by employees to pay taxes related to stock-based awards (in shares) |  | (620,000) |  |  |
Common stock issued for employee stock purchase plan | 21,652 | $ 2 | 21,650 |  |
Common stock issued for employee stock purchase plan (in shares) |  | 196,000 |  |  |
Compensation expense from stock-based awards | 161,454 |  | 161,454 |  |
Net Income (Loss) | $ 245,540 |  |  | 245,540 |
Repurchases of common stock (in shares) | 0 |  |  |  |
Gain/Loss on net investment hedges, net of tax | $ (7,516) |  |  |  | (7,516)
Foreign currency translation adjustment | 45,692 |  |  |  | 45,692
Change in defined benefit pension items, net of tax | (2,798) |  |  |  | (2,798)
Ending balance at Sep. 30, 2023 | $ 2,677,290 | $ 1,188 | 1,820,905 | 973,277 | (118,080)
Ending balance (in shares) at Sep. 30, 2023 | 118,846,000 | 118,846,000 |  |  |
Common stock issued for employee stock-based awards | $ 0 | $ 18 | (18) |  |
Common stock issued for employee stock-based awards (in shares) |  | 1,733,000 |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards | (101,924) | $ (6) | (101,918) |  |
Shares surrendered by employees to pay taxes related to stock-based awards (in shares) |  | (612,000) |  |  |
Common stock issued for employee stock purchase plan | 25,674 | $ 2 | 25,672 |  |
Common stock issued for employee stock purchase plan (in shares) |  | 188,000 |  |  |
Compensation expense from stock-based awards | 220,666 |  | 220,666 |  |
Net Income (Loss) | $ 376,333 |  |  | 376,333 |
Repurchases of common stock (in shares) | 0 |  |  |  |
Gain/Loss on net investment hedges, net of tax | $ (16,315) |  |  |  | (16,315)
Foreign currency translation adjustment | 36,465 |  |  |  | 36,465
Change in defined benefit pension items, net of tax | (3,791) |  |  |  | (3,791)
Ending balance at Sep. 30, 2024 | $ 3,214,398 | $ 1,202 | $ 1,965,307 | $ 1,349,610 | $ (101,721)
Ending balance (in shares) at Sep. 30, 2024 | 120,155,000 | 120,155,000 |  |  |

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