Property and Equipment Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,658,566	$ 2,312,289
Less accumulated depreciation and leasehold amortization	1,106,042	1,003,075
Total property and equipment, net	1,552,524	1,309,214
Computer and communications equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,363,799	1,261,338
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	961,550	742,760
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	226,471	201,155
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	102,151	102,681
Capital lease equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,197	3,200
Other equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,398	$ 1,155