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Income Taxes - Summary of Federal Income Tax Rate and Effective Income Tax Rate (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jun. 01, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Reconciliation, Amount |  |  |  |
Statutory federal income tax rate |  | $ 83,391 | $ 82,268 | $ 28,288
Change in valuation allowance |  | (0) | (134,695) | (16,489)
State income taxes, net of federal tax benefit |  | 6,518 | (28,768) | (2,998)
Federal research and development credits |  | (7,477) | (5,764) | (5,483)
Uncertain tax positions |  | 2,418 | 3,398 | 3,072
Foreign tax credit |  | (9,078) | (35,368) | 0
Foreign rate differences |  | (8,982) | (34,584) | (22,074)
Foreign tax on U.S. provision |  | 9,078 | 5,931 | 4,523
Excess tax benefits from restricted stock |  | (8,278) | (6,141) | (1,743)
Audits and settlements |  | 0 | 33,370 | 0
U.S. permanent items |  | 15,304 | 18,389 | 6,590
Base Erosion Anti-Abuse Tax (BEAT) |  | 0 | 2,936 | (1,759)
GILTI, net of foreign tax credits |  | 2,705 | 18,217 | 14,899
Foreign-Derived Intangible Income (FDII) |  | (6,848) | (4,428) | (2,461)
Other, net |  | 1,578 | 71 | (354)
Provision (benefit) for income taxes |  | $ 84,017 | $ (85,168) | $ 4,011
Reconciliation, Percent |  |  |  |
Statutory federal income tax rate |  | 21.00% | 21.00% | 21.00%
Change in valuation allowance |  | 0.00% | (34.00%) | (12.00%)
State income taxes, net of federal tax benefit |  | 2.00% | (8.00%) | (2.00%)
Federal research and development credits |  | (2.00%) | (2.00%) | (4.00%)
Uncertain tax positions |  | 1.00% | 1.00% | 2.00%
Foreign tax credit |  | (2.00%) | (9.00%) | 0.00%
Foreign rate differences |  | (2.00%) | (9.00%) | (16.00%)
Foreign tax on U.S. provision |  | 2.00% | 2.00% | 3.00%
Excess tax benefits from restricted stock |  | (2.00%) | (2.00%) | (1.00%)
Audits and settlements |  | 0.00% | 9.00% | 0.00%
U.S. permanent items |  | 3.00% | 5.00% | 5.00%
Base Erosion Anti-Abuse Tax (BEAT) |  | 0.00% | 1.00% | (1.00%)
GILTI, net of foreign tax credits |  | 1.00% | 4.00% | 11.00%
Foreign-Derived Intangible Income (FDII) |  | (2.00%) | (1.00%) | (2.00%)
Other, net |  | (1.00%) | 0.00% | (1.00%)
Provision (benefit) for income taxes |  | 21.00% | (22.00%) | 3.00%
PLM Services Business Disposition |  |  |  |
Reconciliation, Amount |  |  |  |
Sale of a portion of the PLM services business | $ 60,400 | $ 6,844 | $ 0 | $ 0
Reconciliation, Percent |  |  |  |
Sale of a portion of the PLM services business |  | 2.00% | 0.00% | 0.00%

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