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Long-Lived Assets by Geographic Area (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Long-Lived Assets by Geographical Areas [Line Items] |  |  |  |  |  |
Long-Lived Assets | $ 2,687,995 |  | $ 2,595,313 |  | $ 1,754,099 |
North American Region |  |  |  |  |  |
Long-Lived Assets by Geographical Areas [Line Items] |  |  |  |  |  |
Long-Lived Assets | 1,361,538 | [1] | 1,252,938 | [1] | 1,074,914 | [1]
North American Region | United States |  |  |  |  |  |
Long-Lived Assets by Geographical Areas [Line Items] |  |  |  |  |  |
Long-Lived Assets | $ 1,360,000 |  | $ 1,250,000 |  | $ 1,050,000 |
[1] | Long-lived assets for the North American Region include long-lived assets attributable to the US of $1.36 billion, $1.25 billion, and $1.05 billion for 2013, 2012, and 2011, respectively.

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- Definition Total long-lived assets. + References No definition available. + Details
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Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | mat_LongLivedAssetsByGeographicalAreasLineItems
Namespace Prefix: | mat_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration