XML 60 R38.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Significant Accounting Policies [Line Items] |  |  |  |
Catalog production and mailing costs amortization period |  | 3 months |  |
Excess tax benefit, amount | $ 4,300 | $ 4,308 | $ 0 | $ 0
Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Cash equivalents maturity period |  | 3 months |  |
Buildings | Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 30 years |  |
Buildings | Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 10 years |  |
Machinery and equipment | Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 15 years |  |
Machinery and equipment | Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 3 years |  |
Software | Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 10 years |  |
Software | Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 3 years |  |
Leasehold improvements | Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 20 years |  |
Leasehold improvements | Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 10 years |  |
Tools, dies, and molds |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives, years |  | 3 years |  |

X
- Definition Cash Equivalents, Maturity Period + References No definition available. + Details
Name: | mat_CashEquivalentsMaturityPeriod
Namespace Prefix: | mat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The period over which catalog production and mailing costs are amortized, starting from the date on which the catalogs are mailed. + References No definition available. + Details
Name: | mat_CatalogProductionAndMailingCostsAmortizationPeriod
Namespace Prefix: | mat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount + References No definition available. + Details
Name: | mat_EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitAmount
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | mat_SignificantAccountingPoliciesLineItems
Namespace Prefix: | mat_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OtherMachineryAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ToolsDiesAndMoldsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |