Segment Reporting, Revenue by Products (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Revenue from External Customer [Line Items]
Revenues From External Customers	$ 4,447,509	$ 4,277,207	$ 4,082,157
Boys [Member]
Revenue from External Customer [Line Items]
Revenues From External Customers	1,775,917	1,483,952	1,237,611
Games [Member]
Revenue from External Customer [Line Items]
Revenues From External Customers	1,276,532	1,259,782	1,311,205
Girls [Member]
Revenue from External Customer [Line Items]
Revenues From External Customers	798,240	1,022,633	1,001,704
Preschool [Member]
Revenue from External Customer [Line Items]
Revenues From External Customers	$ 596,820	$ 510,840	$ 531,637