XML 44 R90.htm IDEA: XBRL DOCUMENT
v3.19.3

Segment Information - Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | $ 2,841,089 | $ 3,050,165 | $ 3,045,368
North American Region |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | 1,466,413 | 1,543,662 | 1,566,621
United States |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | 1,420,000 | 1,490,000 | 1,570,000
International |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | $ 1,374,676 | $ 1,506,503 | $ 1,478,747

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

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=mat_NorthAmericanRegionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=mat_InternationalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |