XML 107 R90.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Income Taxes - Narrative (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2017 | Dec. 31, 2014
Income Taxes [Line Items] |  |  |  |  |  |
Loss carryforwards |  | $ 632,915 |  |  |  |
Tax credit carryforwards |  | 222,353 |  |  |  |
Deferred income tax asset valuation allowances | $ 74,125 | $ 579,245 | $ 74,125 |  |  |
Percentage greater than threshold of Income tax examination of uncertain tax positions that should be recognized |  | 50.00% |  |  |  |
Net deferred income tax assets | 450,618 | $ 12,252 | 450,618 |  |  |
Excess tax benefit, amount | 4,300 |  |  |  |  |
Unrecognized tax benefits, end of period | 109,347 | 116,070 | 109,347 | $ 118,099 |  | $ 100,357
Amount of unrecognized tax benefits that would impact the effective tax rate if recognized |  | 112,300 |  |  |  |
Amount of unrecognized tax benefits that would impact the effective tax rate if recognized and increase the valuation allowance |  | 66,800 |  |  |  |
Increase (decrease) in recognized interest and penalties related to unrecognized tax benefits |  | 2,000 | (2,000) | 0 |  |
Accrued interest and penalties related to unrecognized tax benefits | $ 17,100 | 18,600 | 17,100 |  |  |
Amount of unrecognized tax benefits related to interest and penalties that would impact the effective tax rate if recognized |  | 17,700 |  |  |  |
Reasonably possible changes to unrecognized tax benefits related to settlement of tax audits and/or expiration of statutes of limitations within the next twelve months |  | (27,600) |  |  |  |
Net tax benefit |  | 454,400 | $ 16,800 | $ 19,100 |  |
Cumulative amount of undistributed earnings of foreign subsidiaries that is intended to be indefinitely reinvested and for which no deferred US income taxes have been provided |  | 7,000,000 |  |  |  |
Income tax expense (benefit) adjustment for the Tax Act |  | (105,300) |  |  |  |
Income tax expense (benefit) adjustment for the Tax Act related to remeasurement of the deferred tax liabilities |  | 52,300 |  |  |  |
Income tax expense (benefit) adjustment for the Tax Act related to deferred tax netting |  | 53,000 |  |  |  |
Valuation Allowance for Other Deferred Tax Assets |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Deferred income tax asset valuation allowances |  | 511,800 |  |  | $ 561,900 |
Foreign | Valuation Allowance for Other Deferred Tax Assets |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Deferred income tax asset valuation allowances |  | $ 67,400 |  |  |  |

X
- Definition The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards. + References No definition available. + Details
Name: | mat_DeferredTaxAssetsTaxCreditCarryforward
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 Income Taxes [Line Items] + References No definition available. + Details
Name: | mat_IncomeTaxesLineItems
Namespace Prefix: | mat_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net Tax Benefit + References No definition available. + Details
Name: | mat_NetTaxBenefitExpense
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage greater than threshold of Income Tax Examination Minimum Likelihood of Tax Benefits Being Realized Upon Settlement. + References No definition available. + Details
Name: | mat_PercentageGreaterThanThresholdOfIncomeTaxExaminationMinimumLikelihoodOfTaxBenefitsBeingRealizedUponSettlement
Namespace Prefix: | mat_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Portion of Unrecognized Tax Benefits, that Would Impact Effective Tax Rate, that Would Increase the Valuation Allowance + References No definition available. + Details
Name: | mat_PortionofUnrecognizedTaxBenefitsthatWouldImpactEffectiveTaxRatethatWouldIncreasetheValuationAllowance
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax Cuts and Jobs Act of 2017, Measurement Period Adjustment, Deferred Tax Liability, Income Tax Expense (Benefit) + References No definition available. + Details
Name: | mat_TaxCutsandJobsActof2017MeasurementPeriodAdjustmentDeferredTaxLiabilityIncomeTaxExpenseBenefit
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts and Jobs Act of 2017, Measurement Period Adjustment, Deferred Tax Netting Quarter over Quarter, Income Tax Expense (Benefit) + References No definition available. + Details
Name: | mat_TaxCutsandJobsActof2017MeasurementPeriodAdjustmentDeferredTaxNettingQuarteroverQuarterIncomeTaxExpenseBenefit
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts and Jobs Act of 2017, Measurement Period Adjustment, Income Tax Expense (Benefit) + References No definition available. + Details
Name: | mat_TaxCutsandJobsActof2017MeasurementPeriodAdjustmentIncomeTaxExpenseBenefit
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Unrecognized Tax Benefits, Increase (Decrease) in Income Tax Penalties and Interest Expense + References No definition available. + Details
Name: | mat_UnrecognizedTaxBenefitsIncreaseDecreaseinIncomeTaxPenaltiesandInterestExpense
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of unrecognized tax benefits related to interest and penalties that, if recognized, would affect the effective tax rate. + References No definition available. + Details
Name: | mat_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRateIncomeTaxPenaltiesAndInterestAccrued
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 + Details
Name: | us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsLiabilitiesNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 + Details
Name: | us-gaap_OperatingLossCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 740 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6487024&loc=d3e29054-158556 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 740 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6479915&loc=d3e66715-112838 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 995 -SubTopic 740 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6503627&loc=d3e59836-110443 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28200-109314 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(c) -URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 + Details
Name: | us-gaap_UndistributedEarningsOfForeignSubsidiaries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
Name: | us-gaap_UnrecognizedTaxBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ValuationAllowanceByDeferredTaxAssetAxis=mat_ValuationAllowanceForOtherDeferredTaxAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=us-gaap_NonUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |