Segment Reporting, Net revenues by segment (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues, external		$ 1,569,686	$ 1,791,502	$ 3,190,485	$ 3,613,671
Net revenues, affiliates		0	0	0	0
Operating Profit		313,336	360,944	320,505	539,271
Corporate and Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues, external		0	0	0	0
Net revenues, affiliates		(564,127)	(675,859)	(1,171,612)	(1,351,503)
Operating Profit	[1]	(16,291)	(16,748)	(30,786)	(18,056)
U.S. and Canada [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues, external		924,178	993,833	1,747,807	1,939,837
Net revenues, affiliates		2,364	2,201	7,093	7,047
Operating Profit		226,516	217,278	279,364	363,589
International [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues, external		560,704	739,229	1,229,093	1,511,074
Net revenues, affiliates		2	198	290	213
Operating Profit		66,274	132,007	10,359	149,435
Entertainment and Licensing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues, external		84,804	58,440	213,476	162,663
Net revenues, affiliates		4,712	7,714	11,378	14,727
Operating Profit		33,658	16,910	66,191	39,580
Global Operations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues, external	[2]	0	0	109	97
Net revenues, affiliates	[2]	557,049	665,746	1,152,851	1,329,516
Operating Profit	[2]	$ 3,179	$ 11,497	$ (4,623)	$ 4,723

[1] Certain long-term assets, including property, plant and equipment, goodwill and other intangibles, which benefit multiple operating segments, are included in Corporate and Eliminations. Allocations of certain expenses related to these assets to the individual operating segments are done at the beginning of the year based on budgeted amounts. Any differences b etween actual and budgeted amounts are reflected in Corporate and Eliminations because allocations are translated from the U . S . Dollar to local currenc y at budgeted rates when recorded. Corporate and Eliminations also includes the elimination of inter-comp any balance sheet amounts.

[2] The Global Operations segment derives substantially all of its revenues, and thus its operating results, from intersegment activities.