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Segment Information - Worldwide Revenues by Brand Category (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales									$ 6,283,628	$ 6,718,448	$ 7,117,813
Sales adjustments									(581,015)	(694,629)	(632,921)
Net Sales	$ 1,999,744	$ 1,791,968	$ 988,152	$ 922,749	$ 1,993,966	$ 2,021,424	$ 1,062,252	$ 946,177	5,702,613	6,023,819	6,484,892
Mattel Girls & Boys Brands
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales									3,464,195	3,897,218	4,315,855
Fisher-Price Brands
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales									1,852,219	1,842,550	2,120,719
American Girl Brands
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales									571,957	618,678	632,515
Construction and Arts & Crafts Brands
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales									351,747	314,994	0
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales									$ 43,510	$ 45,008	$ 48,724

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Aggregate of: (i) sales discounts given by the entity, including, but not limited to, early payments of accounts due, (ii) the total deduction from sales during the period arising from goods returned by customers (other than under warranty provisions), and (iii) price reductions (allowance, price protection agreements) given by the entity. Discounts, returns and allowances are a deduction from gross revenue in arriving at net revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 50
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6408645&loc=d3e63676-111659

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
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-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406750&loc=d3e47468-111626

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5

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Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 225
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