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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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Property and Equipment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,146,904		$ 1,146,904		$ 925,451
Less: Accumulated depreciation	(582,897)		(582,897)		(457,366)
Property and equipment, net	564,007		564,007		468,085
Depreciation	58,000	$ 42,000	160,000	$ 119,000
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	862,782		862,782		680,160
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	67,885		67,885		59,511
Leasehold and other improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	149,235		149,235		125,299
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	59,705		59,705		53,651
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,297		$ 7,297		$ 6,830