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Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Property and equipment
Property and equipment, gross	$ 1,124,800	$ 1,080,400
Accumulated depreciation and amortization	(696,600)	(681,500)
Property and equipment, net	428,239	398,876
Depreciation expense	147,000	143,600	$ 163,400
Building and land
Property and equipment
Property and equipment, gross	9,900	14,400
Leasehold Improvements
Property and equipment
Property and equipment, gross	339,700	351,200
Computer Equipment
Property and equipment
Property and equipment, gross	672,100	602,100
Furniture and Fixtures
Property and equipment
Property and equipment, gross	$ 103,100	$ 112,700

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- 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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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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