Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Cost

The components of net periodic benefit cost for Mattel's defined benefit pension plans were as follows:

	For the Three Months Ended				For the Nine Months Ended
	September 30, 2023		September 30, 2022		September 30, 2023		September 30, 2022
	(In thousands)
Service cost	$	848	$	980	$	2,548	$	3,046
Interest cost	5,234		2,996		15,670		9,112
Expected return on plan assets	(5,103)		(4,776)		(15,280)		(14,480)
Amortization of prior service cost	37		5		112		118
Recognized actuarial loss	1,467		2,133		4,399		6,724
	$	2,483	$	1,338	$	7,449	$	4,520

The components of net periodic benefit cost for Mattel's postretirement benefit plans were as follows:

	For the Three Months Ended				For the Nine Months Ended
	September 30, 2023		September 30, 2022		September 30, 2023		September 30, 2022
	(In thousands)
Interest cost	$	45	$	22	$	134	$	66
Amortization of prior service credit	(509)		(509)		(1,528)		(1,527)
Recognized actuarial gain	(57)		(25)		(170)		(75)
	$	(521)	$	(512)	$	(1,564)	$	(1,536)