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Other Noncurrent Assets | 9 Months Ended
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Sep. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Other Noncurrent Assets | Other Noncurrent Assets Other noncurrent assets include the following:
| September 30, 2021 |  | September 30, 2020 |  | December 31, 2020
| (In thousands)
Identifiable intangible assets (net of accumulated amortization of $315.5 million, $277.5 million, and $286.9 million, respectively) | $ | 487,769 |  |  | $ | 519,861 |  |  | $ | 518,190 |
Deferred income taxes | 579,950 |  |  | 60,850 |  |  | 72,682 |
Mattel's amortizable intangible assets primarily consist of trademarks. Mattel tests its amortizable intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable. Mattel's amortizable intangible assets were not impaired during the three and nine months ended September 30, 2021 and 2020. During the three and nine months ended September 30, 2021, Mattel recognized a net discrete tax benefit of $465.3 million and $445.8 million, respectively, primarily related to the release of the valuation allowances on certain U.S. and foreign deferred tax assets, income taxes recorded on a discrete basis in various jurisdictions, and reassessments of prior years' tax liabilities. Refer to "Note 20 to the Consolidated Financial Statements—Income Taxes" for additional information.

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