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Employee Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2021
Retirement Benefits [Abstract] |
Schedule of Components of Net Periodic Benefit Cost | A summary of the components of net periodic benefit cost for Mattel's defined benefit pension plans is as follows:
|  | For the Three Months Ended
|  | March 31, 2021 |  | March 31, 2020
|  | (In thousands)
Service cost |  | $ | 1,293 |  |  | $ | 1,109 |
Interest cost |  | 2,540 |  |  | 3,781 |
Expected return on plan assets |  | (4,627) |  |  | (4,921) |
Amortization of prior service cost |  | 111 |  |  | 43 |
Recognized actuarial loss |  | 2,785 |  |  | 2,359 |
|  | $ | 2,102 |  |  | $ | 2,371 |
A summary of the components of net periodic benefit cost for Mattel's postretirement benefit plans is as follows:
|  | For the Three Months Ended
|  | March 31, 2021 |  | March 31, 2020
|  | (In thousands)
Interest cost |  | $ | 19 |  |  | $ | 35 |
Amortization of prior service credit |  | (509) |  |  | (509) |
Recognized actuarial gain |  | (2) |  |  | (19) |
|  | $ | (492) |  |  | $ | (493) |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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