Seasonal Financing	9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]
Seasonal Financing	Seasonal Financing On December 20, 2017, Mattel, Inc. and certain of its domestic subsidiaries ("U.S. Borrowers") and a Canadian subsidiary ("Canadian Borrower") entered into a syndicated facility agreement (as amended, the "Credit Agreement"), as borrowers thereunder, with Bank of America, N.A., as global administrative agent, collateral agent, Australian security trustee, and lender, and the other lenders and financial institutions party thereto, providing for $1.60 billion in aggregate principal amount of senior secured revolving credit facilities (the "senior secured revolving credit facilities"), consisting of an asset based lending facility, subject to borrowing base capacity, and a revolving credit facility secured by certain fixed assets and intellectual property of the U.S. Borrowers and certain equity interests in various subsidiaries of Mattel, subject to borrowing base capacity (the "Fixed Asset & IP Facility"). As of September 30, 2018, Mattel had outstanding borrowings under the senior secured revolving credit facilities of $275.0 million. There were no amounts outstanding as of December 31, 2017. On March 28, 2018 and March 29, 2018, Mattel, Inc. and certain of its subsidiaries entered into various foreign joinder agreements to the Credit Agreement. The foreign joinder agreements join the relevant foreign borrowers and foreign lenders to the Credit Agreement, as contemplated therein, making portions of the senior secured revolving credit facilities available to other subsidiaries of Mattel, Inc. such that, together with the initial entry into the Credit Agreement, the senior secured revolving credit facilities are available to certain subsidiaries of Mattel, Inc., in their capacity as borrowers, located in the following jurisdictions: (i) the United States (the "U.S. Borrowers"), (ii) Canada (the "Canadian Borrower"), (iii) Germany, the Netherlands and the United Kingdom (the "European (GNU) Borrowers"), (iv) Spain (the "Spanish Borrower"), (v) France (the "French Borrower"), and (vi) Australia (the "Australian Borrower"), in each case through subfacilities in each such jurisdiction (each, a "Subfacility"). Through the initial Credit Agreement and the foreign joinder agreements, certain additional domestic and foreign subsidiaries of Mattel, Inc. are also parties to the Credit Agreement as guarantors of various obligations of the borrowers under the Credit Agreement as further described below. On June 1, 2018, Mattel, Inc. entered into an amendment (the "Amendment") to the Credit Agreement. The Amendment amends certain terms of the Credit Agreement, including, but not limited to, the extension of the maturity date of the Credit Agreement (and the facilities and lending commitments thereunder) from December 20, 2020 to June 1, 2021. Borrowings under the senior secured revolving credit facilities (i) are limited by jurisdiction-specific borrowing base calculations based on the sum of specified percentages of eligible accounts receivable, eligible inventory and certain fixed assets and intellectual property, as applicable, minus the amount of any applicable reserves, and (ii) bear interest at a floating rate, which can be either, at the Borrower’s option, (a) an adjusted LIBOR rate plus an applicable margin ranging from 1.25% to 3.00% per annum or (b) an alternate base rate plus an applicable margin ranging from 0.25% to 2.00% per annum, in each case, such applicable margins to be determined based on the Borrower’s average borrowing availability remaining under the senior secured revolving credit facilities. In addition to paying interest on the outstanding principal under the senior secured revolving credit facilities, Mattel, Inc. is required to pay (i) an unused line fee per annum of the average daily unused portion of the senior secured revolving credit facilities; (ii) a letter of credit fronting fee based on a percentage of the aggregate face amount of outstanding letters of credit; and (iii) certain other customary fees and expenses of the lenders and agents. The U.S. Borrowers, as well as certain Mattel U.S. subsidiaries that are guarantors (the "U.S. Guarantors"), are guaranteeing the obligations of all Borrowers under the senior secured revolving credit facilities. Additionally, the obligations of the Canadian Borrower, the French Borrower, the Spanish Borrower, the European (GNU) Borrowers and the Australian Borrower (collectively, the "Foreign Borrowers"), are each guaranteed by the obligations of the other Foreign Borrowers, as well as additional foreign subsidiaries of Mattel, Inc. that are guarantors (the "Foreign Guarantors"). The U.S. Subfacility is secured by liens on substantially all of the U.S. Borrowers’ and the U.S. Guarantors’ accounts receivable and inventory (the "U.S. Current Assets Collateral"). The Canadian Subfacility, the French Subfacility, the Spanish Subfacility, the European (GNU) Subfacility and the Australian Subfacility are each secured by a first priority lien on (i) the accounts receivable and inventory of the applicable Foreign Borrower(s) and Foreign Guarantors under such facility, and (ii) the U.S. Current Assets Collateral. The Fixed Asset & IP Facility is secured by a first priority lien on certain owned real property in the U.S., certain U.S. trademarks and patents, and 100% of the equity interests in the U.S. Borrowers (aside from Mattel) and U.S. Guarantors, as well as 65% of the voting equity interests and 100% of the non-voting equity interests in Mattel Holdings Limited. The Fixed Asset & IP Facility is also secured by 65% of the voting equity interests of such additional Foreign Borrowers and Foreign Guarantors that are directly owned by a U.S. Borrower or U.S. Guarantor. The Credit Agreement contains customary covenants, including, but not limited to, restrictions on the Borrower’s and its subsidiaries’ ability to merge and consolidate with other companies, incur indebtedness, grant liens or security interests on assets, make acquisitions, loans, advances or investments, pay dividends, sell or otherwise transfer assets outside of the ordinary course, optionally prepay or modify terms of any junior indebtedness, enter into transactions with affiliates, or change their line of business. The Credit Agreement requires the maintenance of a fixed charge coverage ratio of 1.00 to 1.00 at the end of each fiscal quarter when excess availability under the senior secured revolving credit facilities is less than the greater of (x) $100 million and (y) 10% of the aggregate amount available thereunder (the "Availability Threshold") and on the last day of each subsequent fiscal quarter ending thereafter until no event of default exists and excess availability is greater than the Availability Threshold for at least 30 consecutive days. The fixed charge coverage ratio covenant was not in effect based on Mattel's excess availability under the senior secured revolving credit facilities as of September 30, 2018. Mattel was in compliance with all covenants contained in the Credit Agreement as of September 30, 2018. The Credit Agreement is a material agreement, and failure to comply with the covenants may result in an event of default under the terms of the senior secured revolving credit facilities. If Mattel were to default under the terms of the senior secured revolving credit facilities, its ability to meet its seasonal financing requirements could be adversely affected.

Seasonal Financing

On December 20, 2017, Mattel, Inc. and certain of its domestic subsidiaries ("U.S. Borrowers") and a Canadian subsidiary ("Canadian Borrower") entered into a syndicated facility agreement (as amended, the "Credit Agreement"), as borrowers thereunder, with Bank of America, N.A., as global administrative agent, collateral agent, Australian security trustee, and lender, and the other lenders and financial institutions party thereto, providing for $1.60 billion in aggregate principal amount of senior secured revolving credit facilities (the "senior secured revolving credit facilities"), consisting of an asset based lending facility, subject to borrowing base capacity, and a revolving credit facility secured by certain fixed assets and intellectual property of the U.S. Borrowers and certain equity interests in various subsidiaries of Mattel, subject to borrowing base capacity (the "Fixed Asset & IP Facility"). As of September 30, 2018, Mattel had outstanding borrowings under the senior secured revolving credit facilities of $275.0 million. There were no amounts outstanding as of December 31, 2017.

On March 28, 2018 and March 29, 2018, Mattel, Inc. and certain of its subsidiaries entered into various foreign joinder agreements to the Credit Agreement. The foreign joinder agreements join the relevant foreign borrowers and foreign lenders to the Credit Agreement, as contemplated therein, making portions of the senior secured revolving credit facilities available to other subsidiaries of Mattel, Inc. such that, together with the initial entry into the Credit Agreement, the senior secured revolving credit facilities are available to certain subsidiaries of Mattel, Inc., in their capacity as borrowers, located in the following jurisdictions: (i) the United States (the "U.S. Borrowers"), (ii) Canada (the "Canadian Borrower"), (iii) Germany, the Netherlands and the United Kingdom (the "European (GNU) Borrowers"), (iv) Spain (the "Spanish Borrower"), (v) France (the "French Borrower"), and (vi) Australia (the "Australian Borrower"), in each case through subfacilities in each such jurisdiction (each, a "Subfacility"). Through the initial Credit Agreement and the foreign joinder agreements, certain additional domestic and foreign subsidiaries of Mattel, Inc. are also parties to the Credit Agreement as guarantors of various obligations of the borrowers under the Credit Agreement as further described below.

On June 1, 2018, Mattel, Inc. entered into an amendment (the "Amendment") to the Credit Agreement. The Amendment amends certain terms of the Credit Agreement, including, but not limited to, the extension of the maturity date of the Credit Agreement (and the facilities and lending commitments thereunder) from December 20, 2020 to June 1, 2021.

Borrowings under the senior secured revolving credit facilities (i) are limited by jurisdiction-specific borrowing base calculations based on the sum of specified percentages of eligible accounts receivable, eligible inventory and certain fixed assets and intellectual property, as applicable, minus the amount of any applicable reserves, and (ii) bear interest at a floating rate, which can be either, at the Borrower’s option, (a) an adjusted LIBOR rate plus an applicable margin ranging from 1.25% to 3.00% per annum or (b) an alternate base rate plus an applicable margin ranging from 0.25% to 2.00% per annum, in each case, such applicable margins to be determined based on the Borrower’s average borrowing availability remaining under the senior secured revolving credit facilities.

In addition to paying interest on the outstanding principal under the senior secured revolving credit facilities, Mattel, Inc. is required to pay (i) an unused line fee per annum of the average daily unused portion of the senior secured revolving credit facilities; (ii) a letter of credit fronting fee based on a percentage of the aggregate face amount of outstanding letters of credit; and (iii) certain other customary fees and expenses of the lenders and agents.

The U.S. Borrowers, as well as certain Mattel U.S. subsidiaries that are guarantors (the "U.S. Guarantors"), are guaranteeing the obligations of all Borrowers under the senior secured revolving credit facilities. Additionally, the obligations of the Canadian Borrower, the French Borrower, the Spanish Borrower, the European (GNU) Borrowers and the Australian Borrower (collectively, the "Foreign Borrowers"), are each guaranteed by the obligations of the other Foreign Borrowers, as well as additional foreign subsidiaries of Mattel, Inc. that are guarantors (the "Foreign Guarantors").

The U.S. Subfacility is secured by liens on substantially all of the U.S. Borrowers’ and the U.S. Guarantors’ accounts receivable and inventory (the "U.S. Current Assets Collateral"). The Canadian Subfacility, the French Subfacility, the Spanish Subfacility, the European (GNU) Subfacility and the Australian Subfacility are each secured by a first priority lien on (i) the accounts receivable and inventory of the applicable Foreign Borrower(s) and Foreign Guarantors under such facility, and (ii) the U.S. Current Assets Collateral. The Fixed Asset & IP Facility is secured by a first priority lien on certain owned real property in the U.S., certain U.S. trademarks and patents, and 100% of the equity interests in the U.S. Borrowers (aside from Mattel) and U.S. Guarantors, as well as 65% of the voting equity interests and 100% of the non-voting equity interests in Mattel Holdings Limited. The Fixed Asset & IP Facility is also secured by 65% of the voting equity interests of such additional Foreign Borrowers and Foreign Guarantors that are directly owned by a U.S. Borrower or U.S. Guarantor.

The Credit Agreement contains customary covenants, including, but not limited to, restrictions on the Borrower’s and its subsidiaries’ ability to merge and consolidate with other companies, incur indebtedness, grant liens or security interests on assets, make acquisitions, loans, advances or investments, pay dividends, sell or otherwise transfer assets outside of the ordinary course, optionally prepay or modify terms of any junior indebtedness, enter into transactions with affiliates, or change their line of business.

The Credit Agreement requires the maintenance of a fixed charge coverage ratio of 1.00 to 1.00 at the end of each fiscal quarter when excess availability under the senior secured revolving credit facilities is less than the greater of (x) $100 million and (y) 10% of the aggregate amount available thereunder (the "Availability Threshold") and on the last day of each subsequent fiscal quarter ending thereafter until no event of default exists and excess availability is greater than the Availability Threshold for at least 30 consecutive days.

The fixed charge coverage ratio covenant was not in effect based on Mattel's excess availability under the senior secured revolving credit facilities as of September 30, 2018. Mattel was in compliance with all covenants contained in the Credit Agreement as of September 30, 2018. The Credit Agreement is a material agreement, and failure to comply with the covenants may result in an event of default under the terms of the senior secured revolving credit facilities. If Mattel were to default under the terms of the senior secured revolving credit facilities, its ability to meet its seasonal financing requirements could be adversely affected.