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Income Taxes (Tables)

12 Months Ended

Sep. 30, 2019

Income Tax Disclosure [Abstract]

Provision (benefit) for Income Taxes

The provision (benefit) for income taxes consists of the following:

		Year Ended September 30,
		2019				2018				2017
Current		$	102,391			$	42,047			$	69,535
Deferred			(13,950	)			25,098				6,551
Income taxes		$	88,441			$	67,145			$	76,086

Components of Deferred Tax Assets and Liabilities

Deferred income taxes are comprised of the following components:

		As of September 30,
		2019				2018
Deferred tax assets:
Deferred revenue		$	30,659			$	30,596
Employee compensation and benefits			76,327				72,218
Intangible assets, computer software and intellectual property			11,805				9,793
Tax credits, net capital and operating loss carryforwards			153,062				184,450
Other			73,249				49,732
Total deferred tax assets			345,102				346,789
Valuation allowances			(85,533	)			(112,727	)
Total deferred tax assets, net			259,569				234,062
Deferred tax liabilities:
Anticipated withholdings on subsidiaries’ earnings			(70,961	)			(68,394	)
Intangible assets, computer software and intellectual property			(104,926	)			(114,094	)
Other			(81,736	)			(31,750	)
Total deferred tax liabilities			(257,623	)			(214,238	)
Net deferred tax assets		$	1,946			$	19,824

Effective Income Tax Rate Varied from Statutory Guernsey Tax Rate

The effective income tax rate varied from the statutory Guernsey tax rate as follows:

		Year Ended September 30,
		2019				2018				2017
Statutory Guernsey tax rate			0	%			0	%			0	%
Foreign taxes(1)			15.6				15.9				14.8
Effective income tax rate			15.6	%			15.9	%			14.8	%

As a Guernsey company subject to a corporate tax rate of zero​​​​​​​ percent, the Company’s overall effective tax rate is attributable to foreign taxes. The Company’s income before income tax expense is considered to be foreign income.

(1) Foreign taxes for the year ended Sep 30, 2019:

In fiscal year 2019, foreign taxes included a benefit of $26,529 that was primarily attributable to the expiration of the periods set forth in statutes of limitations and to a lesser extent from the conclusions of tax audits related to unrecognized tax benefits accumulated over several years in certain jurisdictions.

Foreign taxes in fiscal year 2019 also included a benefit of $12,650 resulting from the release of valuation allowances on deferred tax assets at certain of the Company’s subsidiaries, which will, more likely than not, be realized due to the Company’s projections of future taxable income.

Aggregate Changes in Balance of Company's Gross Unrecognized Tax Benefits

The aggregate changes in the balance of the Company’s gross unrecognized tax benefits were as follows:

		Year Ended September 30,
		2019				2018				2017
Balance at beginning of fiscal year		$	187,646			$	193,024			$	196,668
Additions based on tax positions related to the current year			19,530				20,329				22,319
Additions (reduction) for tax positions of prior years			24,980				(3,805	)			12,261
Settlements with tax authorities(1)			(37,672	)			(3,880	)			(9,450	)
Lapse of statute of limitations			(25,162	)			(18,022	)			(28,774	)
Balance at end of fiscal year		$	169,322			$	187,646			$	193,024

(1) The changes in the year ended September 30, 2019, in the balance of the Company’s gross unrecognized tax benefits that relate to settlements with tax authorities is $37,672, the vast majority of which was offset by income tax payments and increase in Tax Payables and Deferred Tax Liabilities.

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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 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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