Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Basic:
Net Income (Loss)	$ 149,931	[1]	$ 331,836	[1]	$ 28,325	[1]	$ (11,218)	[1]	$ 369,249	[1]	$ 422,836	[1]	$ 73,348	[1]	$ 38,511	[1]	$ 498,874	$ 903,944	$ 776,464
Less: Net income allocable to participating RSUs																	(4,028)	(8,335)	(7,730)
Net income available for basic common shares																	494,846	895,609	768,734
Weighted average common shares outstanding	338,416		338,728		338,709		340,226		339,402		343,279		346,614		344,315		339,016	343,394	341,665
Basic net income (loss) per common share	$ 0.44		$ 0.97		$ 0.08		$ (0.03)		$ 1.08		$ 1.22		$ 0.21		$ 0.11		$ 1.46	$ 2.61	$ 2.25
Diluted:
Net Income (Loss)	149,931	[1]	331,836	[1]	28,325	[1]	(11,218)	[1]	369,249	[1]	422,836	[1]	73,348	[1]	38,511	[1]	498,874	903,944	776,464
Less: Net income allocable to participating RSUs																	(4,028)	(8,291)	(7,682)
Net income available for diluted common shares																	$ 494,846	$ 895,653	$ 768,782
Weighted average common shares outstanding	338,416		338,728		338,709		340,226		339,402		343,279		346,614		344,315		339,016	343,394	341,665
Weighted average common equivalent shares arising from:
Dilutive stock options and non-participating RSUs																	1,752	4,065	4,493
Weighted average number of common and potential common shares	339,506		340,329		340,644		340,226		343,237		346,695		350,424		348,795		340,768	347,459	346,158
Diluted net income (loss) per common share	$ 0.44		$ 0.97		$ 0.08		$ (0.03)		$ 1.07		$ 1.21		$ 0.21		$ 0.11		$ 1.45	$ 2.58	$ 2.22

[1] Net loss for the first quarter of 2014 included $3.7 million of net tax expense primarily related to reassessments of prior years' tax liabilities based on the status of audits and tax filings in various jurisdictions, settlements, and enacted tax law changes. Net income for the second and third quarters of 2014 included net tax benefits of $40.1 million and $15.1 million, respectively, primarily related to reassessments of prior years' tax liabilities based on the status of audits and tax filings in various jurisdictions, settlements, and enacted tax law changes. Net income for the fourth quarter of 2014 included net tax expense of $8.9 million, primarily related to a tax charge related to a 2014 tax restructuring for the HIT Entertainment and MEGA Brands operations, partially offset by reassessments of prior years' tax liabilities based on the status of audits and tax filings in various jurisdictions around the world, settlements, and enacted tax law changes. Net income for the first quarter of 2013 included $4.0 million of net tax benefits primarily related to enacted tax law changes. Net income for the second and third quarter of 2013 included net tax benefits of $11.2 million and $17.0 million, respectively, primarily related to reassessments of prior years' tax liabilities based on the status of audits and tax filings in various jurisdictions, settlements, and enacted tax law changes.