Property and Equipment Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,578,317	$ 3,274,001
Less accumulated depreciation and leasehold amortization	1,719,545	1,530,426
Total property and equipment, net	1,858,772	1,743,575
Computer and communications equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,855,550	1,686,747
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,374,541	1,239,122
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	214,608	214,697
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	132,540	132,180
Other equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,078	$ 1,255

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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