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Income Taxes (Tables)

12 Months Ended

Sep. 30, 2023

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision for income taxes was as follows during fiscal 2023, 2022 and 2021: 

			Year ended September 30,
			2023						2022						2021
			(In thousands)
Current:
Federal			$	112,456					$	50,403					$	43,437
State			16,844						8,952						7,961
Foreign			42,327						30,597						35,615
			171,627						89,952						87,013
Deferred:
Federal			(37,884)						8,165						(4,602)
State			(15,025)						507						(948)
Foreign			5,531						(856)						(405)
			(47,378)						7,816						(5,955)
Total provision			$	124,249					$	97,768					$	81,058

Deferred Tax Assets and Liabilities

Deferred tax assets and liabilities at September 30, 2023 and 2022 were as follows: 

			September 30,
			2023						2022
			(In thousands)
Deferred tax assets:
Loss and credit carryforwards			$	12,309					$	19,122
Compensation benefits			30,490						29,344
Operating lease liabilities			9,396						13,065
Research and development costs			34,730						—
Other assets			17,327						14,744
			104,252						76,275
Less: valuation allowance			(2,183)						(16,635)
Total deferred tax assets			102,069						59,640
Deferred tax liabilities:
Intangible assets			(7,226)						(14,263)
Deferred commission			(14,017)						(12,419)
Operating lease right-of-use assets			(6,228)						(8,798)
Other liabilities			(15,462)						(12,357)
Total deferred tax liabilities			(42,933)						(47,837)
Deferred tax assets, net			$	59,136					$	11,803

Reconciliation Between Federal Statutory Income Tax Rate and Effective Tax Rate

A reconciliation of the provision for income taxes, with the amount computed by applying the U.S. federal statutory income tax rate of 21% to income before provision for income taxes for fiscal 2023, 2022 and 2021 is shown below:

			Year Ended September 30,
			2023						2022						2021
			(In thousands)
Income tax provision at U.S. federal statutory rate			$	116,261					$	98,975					$	99,360
State income taxes, net of U.S. federal benefit			14,135						8,359						7,815
Foreign tax rate differential			9,489						3,058						1,490
Research credits			(3,600)						(5,932)						(6,795)
Valuation allowance			(14,451)						(11,768)						3,839
Excess tax benefits relating to share-based compensation			(949)						702						(15,573)
GILTI, FDII, BEAT and FTC			(9,010)						(2,491)						(4,958)
Other			12,374						6,865						(4,120)
Recorded income tax provision			$	124,249					$	97,768					$	81,058

Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: 

			Year Ended September 30,
			2023						2022						2021
			(In thousands)
Gross unrecognized tax benefits at beginning of year			$	12,980					$	10,897					$	7,994
Gross increases for tax positions in prior years			—						593						—
Gross decreases for tax positions in prior years			(1,127)						—						(385)
Gross increases based on tax positions related to the current year			3,650						3,250						5,273
Decreases for settlements and payments			(523)						—						(643)
Decreases due to statute expiration			(1,131)						(1,760)						(1,342)
Gross unrecognized tax benefits at end of year			$	13,849					$	12,980					$	10,897

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.

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