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Income Taxes - Reconciliation of Income Tax (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Income tax expense computed at U.S. federal statutory rate | $ 77,269 | $ 126,981 | $ 139,112
Increases (reductions) resulting from: |  |  |
State and local income taxes, net of federal tax | 32,599 | 28,762 | 17,586
Foreign income taxes, net of federal tax | 4,765 | 9,243 | 6,679
Non-deductible expenses, including non-deductible penalties | 34,825 | 859 | 918
Re-measurement of current year losses under CARES Act | 0 | 0 | (76,767)
Excess tax benefits from stock-based compensation | (5,247) | (4,227) | (8,556)
Research and development and other federal credits | (33,159) | (34,080) | (30,313)
Executive compensation -162(m) | 4,295 | 3,614 | 3,813
Foreign-Derived Intangible Income (FDII) | (15,869) | (9,115) | (4,536)
Changes in uncertain tax positions (including indirect effects) | (6,498) | 16,938 | 6,793
Other | 3,754 | (1,509) | (1,248)
Total | $ 96,734 | $ 137,466 | $ 53,481

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- Definition Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 740 -Section 35 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126970579&loc=d3e23163-113944 + Details
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