Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net revenues	$ 1,575,173	$ 1,569,686	$ 3,292,220	$ 3,190,485
Costs and expenses:
Cost of sales	627,119	655,597	1,230,800	1,249,090
Royalties	128,008	105,265	258,957	240,962
Product development	67,354	65,807	189,246	183,050
Advertising	140,256	134,384	309,659	290,001
Amortization of intangibles	11,814	8,841	35,445	19,873
Program production cost amortization	28,028	14,088	58,105	33,419
Selling, distribution and administration	275,384	272,368	748,338	853,585
Total costs and expenses	1,277,963	1,256,350	2,830,550	2,869,980
Operating profit	297,210	313,336	461,670	320,505
Non-operating (income) expense:
Interest expense	22,764	22,779	67,096	68,391
Interest income	(5,485)	(4,671)	(19,164)	(17,227)
Other expense (income), net	20,185	(566)	118,289	(6,189)
Total non-operating expense, net	37,464	17,542	166,221	44,975
Earnings before income taxes	259,746	295,794	295,449	275,530
Income tax expense	46,797	31,933	42,340	63,862
Net earnings	$ 212,949	$ 263,861	$ 253,109	$ 211,668
Net earnings (loss) per common share:
Basic (in dollars per share)	$ 1.68	$ 2.08	$ 2.00	$ 1.68
Diluted (in dollars per share)	1.67	2.06	1.99	1.67
Cash dividends declared per common share (in dollars per share)	$ 0.68	$ 0.63	$ 2.04	$ 1.89