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Property and Equipment, Net - Components of Property and Equipment, Net (Detail) - USD ($) $ in Thousands		Sep. 30, 2022	Sep. 30, 2021
Property and Equipment, Net [Line Items]
Property and equipment, gross		$ 1,923,337	$ 1,787,260
Less accumulated depreciation		(1,129,050)	(1,088,492)
Property and equipment, net		794,287	698,768
Computers, Related Equipment and Software [Member]
Property and Equipment, Net [Line Items]
Property and equipment, gross		1,267,230	1,195,787
Building and Land [Member]
Property and Equipment, Net [Line Items]
Property and equipment, gross	[1]	392,110	291,262
Leasehold Improvements [Member]
Property and Equipment, Net [Line Items]
Property and equipment, gross		199,972	244,858
Furniture, Fixtures and Other [Member]
Property and Equipment, Net [Line Items]
Property and equipment, gross		$ 64,025	$ 55,353
[1] For more details, please see also Note 2.

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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