Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 25, 2011	Sep. 25, 2011	Jun. 26, 2011	Mar. 27, 2011	Dec. 26, 2010	Sep. 26, 2010	Jun. 27, 2010	Mar. 28, 2010	Dec. 25, 2011	Dec. 26, 2010	Dec. 27, 2009
Segment Reporting Information [Line Items]
Revenues From External Customers									$ 4,285,589	$ 4,002,161	$ 4,067,947
Affiliate Revenues									0	0	0
Operating Profit (Loss)	216,579	248,072	80,407	48,923	201,049	237,757	79,726	69,327	593,981	587,859	588,598
Depreciation and Amortization									160,468	146,330	180,963
Capital Additions									99,402	112,597	104,129
Total Assets	4,130,774				4,093,226				4,130,774	4,093,226	3,896,892
Revenue from External Customer [Line Items]
Net revenues									4,285,589	4,002,161	4,067,947
Threshold percentage to be considered a significant product line, minimum (in hundredths)									10.00%	10.00%	10.00%
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									4,285,589	4,002,161	4,067,947
Long-lived assets by geographical location	1,160,106				1,208,990				1,160,106	1,208,990	1,251,204
United States [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									2,155,038	2,173,266	2,363,559
Revenue from External Customer [Line Items]
Net revenues									2,155,038	2,173,266	2,363,559
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									2,155,038	2,173,266	2,363,559
Long-lived assets by geographical location	974,037				1,014,149				974,037	1,014,149	1,059,304
International Markets [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									2,130,551	1,828,895	1,704,388
Revenue from External Customer [Line Items]
Net revenues									2,130,551	1,828,895	1,704,388
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									2,130,551	1,828,895	1,704,388
Long-lived assets by geographical location	186,069				194,841				186,069	194,841	191,900
Europe [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									1,254,427	1,057,937	1,032,096
Revenue from External Customer [Line Items]
Net revenues									1,254,427	1,057,937	1,032,096
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									1,254,427	1,057,937	1,032,096
Mexico and Latin America [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									334,887	281,835	226,532
Revenue from External Customer [Line Items]
Net revenues									334,887	281,835	226,532
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									334,887	281,835	226,532
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									272,587	220,155	200,848
Revenue from External Customer [Line Items]
Net revenues									272,587	220,155	200,848
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									272,587	220,155	200,848
NERF [Member]
Revenue from External Customer [Line Items]
Percentage of consolidated net revenues accounted for (in hundredths)					10.30%					10.30%
TRANSFORMERS [Member]
Revenue from External Customer [Line Items]
Percentage of consolidated net revenues accounted for (in hundredths)	11.30%								11.30%		14.50%
BEYBLADE [Member]
Revenue from External Customer [Line Items]
Percentage of consolidated net revenues accounted for (in hundredths)	11.10%								11.10%
Boys [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									1,821,544	1,344,899	1,452,444
Revenue from External Customer [Line Items]
Net revenues									1,821,544	1,344,899	1,452,444
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									1,821,544	1,344,899	1,452,444
Games And Puzzles [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									1,166,977	1,293,772	1,340,886
Revenue from External Customer [Line Items]
Net revenues									1,166,977	1,293,772	1,340,886
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									1,166,977	1,293,772	1,340,886
Girls [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									741,394	830,383	790,817
Revenue from External Customer [Line Items]
Net revenues									741,394	830,383	790,817
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									741,394	830,383	790,817
Preschool [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									552,979	532,483	469,932
Revenue from External Customer [Line Items]
Net revenues									552,979	532,483	469,932
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									552,979	532,483	469,932
Class Of Principal Product Other [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									2,695	624	13,868
Revenue from External Customer [Line Items]
Net revenues									2,695	624	13,868
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									2,695	624	13,868
US and Canada [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									2,253,458	2,299,547	2,447,943
Affiliate Revenues									16,259	16,124	10,502
Operating Profit (Loss)									278,356	349,594	380,580
Depreciation and Amortization									24,389	25,508	52,161
Capital Additions									1,199	1,473	2,060
Total Assets	5,225,099				4,571,597				5,225,099	4,571,597	3,901,598
Revenue from External Customer [Line Items]
Net revenues									2,253,458	2,299,547	2,447,943
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									2,253,458	2,299,547	2,447,943
International [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									1,861,901	1,559,927	1,459,476
Affiliate Revenues									201	69	165
Operating Profit (Loss)									270,578	209,704	162,159
Depreciation and Amortization									21,348	20,378	28,201
Capital Additions									4,296	5,554	4,339
Total Assets	2,062,928				1,672,326				2,062,928	1,672,326	1,519,542
Revenue from External Customer [Line Items]
Net revenues									1,861,901	1,559,927	1,459,476
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									1,861,901	1,559,927	1,459,476
Entertainment and Licensing [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									162,233	136,488	155,013
Affiliate Revenues									883	0	0
Operating Profit (Loss)									42,784	43,234	65,572
Depreciation and Amortization									13,822	11,047	16,656
Capital Additions									3,365	8,888	1,002
Total Assets	1,022,008				861,971				1,022,008	861,971	711,631
Revenue from External Customer [Line Items]
Net revenues									162,233	136,488	155,013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									162,233	136,488	155,013
Global Operations [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									7,997	6,199	5,515
Affiliate Revenues									1,628,852	1,727,133	1,503,622
Operating Profit (Loss)									(7,948)	18,741	9,172
Depreciation and Amortization									77,883	64,123	69,764
Capital Additions									70,956	75,015	67,661
Total Assets	1,974,951				1,542,896				1,974,951	1,542,896	1,012,597
Revenue from External Customer [Line Items]
Net revenues									7,997	6,199	5,515
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									7,997	6,199	5,515
Corporate Elimination [Member]
Segment Reporting Information [Line Items]
Revenues From External Customers									0	0	0
Affiliate Revenues									(1,646,195)	(1,743,326)	(1,514,289)
Operating Profit (Loss)									10,211	(33,414)	(28,885)
Depreciation and Amortization									23,026	25,274	14,181
Capital Additions									19,586	21,667	29,067
Total Assets	(6,154,212)				(4,555,564)				(6,154,212)	(4,555,564)	(3,248,476)
Revenue from External Customer [Line Items]
Net revenues									0	0	0
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues by geographical location									$ 0	$ 0	$ 0