Stock Options, Other Stock Awards and Warrants, Allocation of Recognized Period Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 25, 2016	Dec. 27, 2015
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	$ 56,032	$ 61,624	$ 53,880
Income tax benefit	9,574	20,298	13,489
Allocated share-based compensation expense, net of tax	46,458	41,326	40,391
Cost of Sales [Member]
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	0	200	366
Product Development [Member]
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	3,312	3,248	3,527
Selling, Distribution and Administration [Member]
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	52,720	58,176	49,987
Restricted Stock Units (RSUs) [Member]
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	20,573	19,908	19,052
Stock Performance Awards [Member]
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	27,522	34,248	27,960
Stock Awards Non Employee [Member]
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	1,595	1,630	1,449
Employee Stock Options [Member]
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	6,342	5,838	5,419
Cash-settled Restricted Stock Units [Member]
Allocation of total compensation expense related to stock options, restricted stock units and Stock Performance Awards [Abstract]
Allocated share-based compensation (income) expense	$ 0	$ 0	$ 0