Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Basic:
Net Income	$ 28,325		$ 73,348		$ 17,107		$ 111,859
Less: net income allocable to participating RSUs	(265)	[1]	(725)	[1]	(199)	[1]	(1,131)	[1]
Net income available for basic common shares	28,060		72,623		16,908		110,728
Weighted average common shares outstanding	338,709		346,614		339,463		345,453
Basic net income per common share	$ 0.08		$ 0.21		$ 0.05		$ 0.32
Diluted:
Net Income	28,325		73,348		17,107		111,859
Less: net income allocable to participating RSUs	(270)	[1]	(730)	[1]	(212)	[1]	(1,147)	[1]
Net income available for diluted common shares	$ 28,055		$ 72,618		$ 16,895		$ 110,712
Weighted average common shares outstanding	338,709		346,614		339,463		345,453
Weighted average common equivalent shares arising from:
Dilutive stock options and non-participating RSUs	1,935		3,810		2,131		4,050
Weighted average number of common and potential common shares	340,644		350,424		341,594		349,503
Diluted net income per common share	$ 0.08		$ 0.21		$ 0.05		$ 0.32

[1] During the three and six months ended June 30, 2014 and 2013, Mattel allocated a proportionate share of both dividends and undistributed earnings to participating RSUs.