Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Assets and Liabilities

The following tables present Mattel's derivative assets and liabilities:

	Derivative Assets
	Balance Sheet Classification	Fair Value
		March 31, 2026		March 31, 2025		December 31, 2025
		(In thousands)
Derivatives Designated as Hedging Instruments:
Foreign currency forward exchange and other contracts	Prepaid expenses and other current assets	$	4,554	$	7,423	$	854
Foreign currency forward exchange and other contracts	Other noncurrent assets	2,340		553		15
Total Derivatives Designated as Hedging Instruments		$	6,894	$	7,976	$	869
Derivatives Not Designated as Hedging Instruments:
Foreign currency forward exchange and other contracts	Prepaid expenses and other current assets	$	1,083	$	586	$	469
Total Derivatives Not Designated as Hedging Instruments		$	1,083	$	586	$	469
		$	7,977	$	8,562	$	1,338
	Derivative Liabilities
	Balance Sheet Classification	Fair Value
		March 31, 2026		March 31, 2025		December 31, 2025
		(In thousands)
Derivatives Designated as Hedging Instruments:
Foreign currency forward exchange and other contracts	Accrued liabilities	$	8,757	$	3,749	$	14,781
Foreign currency forward exchange and other contracts	Other noncurrent liabilities	168		905		1,257
Total Derivatives Designated as Hedging Instruments		$	8,925	$	4,654	$	16,038
Derivatives Not Designated as Hedging Instruments:
Foreign currency forward exchange and other contracts	Accrued liabilities	$	1,357	$	1,438	$	295
Total Derivatives Not Designated as Hedging Instruments		$	1,357	$	1,438	$	295
		$	10,282	$	6,092	$	16,333

Schedule of Derivatives Designated as Hedging Instruments by Classification and Amount of Gains and Losses

The following table presents the classification and amount of gains and losses, net of tax, from derivatives reported in the consolidated statements of operations:

	Derivatives Designated as Hedging Instruments
	For the Three Months Ended
	March 31, 2026		March 31, 2025		Statements of Operations Classification
	(In thousands)
Foreign Currency Forward Exchange and Other Contracts:
Amount of gains (losses) recognized in OCI	$	7,129	$	(9,223)
Amount of (losses) reclassified from accumulated OCI to the consolidated statements of operations	(1,821)		(2,185)		Cost of sales

Schedule of Derivatives Not Designated as Hedging Instruments by Classification and Amount of Gains and Losses

	Derivatives Not Designated as Hedging Instruments
	For the Three Months Ended
	March 31, 2026		March 31, 2025		Statements of Operations Classification
	(In thousands)
Amount of Net (Losses) Gains Recognized in the Statements of Operations:
Foreign currency forward exchange and other contracts	$	(4,424)	$	1,869	Other non-operating income/expense, net