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Segment Information - Worldwide Revenues by Categories (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 732,136	$ 860,063	$ 1,326,206	$ 1,549,309
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	814,560	962,266	1,484,525	1,742,392
Operating Segments | Dolls
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	261,023	273,405	486,892	526,291
Operating Segments | Infant, Toddler, and Preschool
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	199,824	251,996	340,144	445,622
Operating Segments | Vehicles
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	158,683	214,137	344,334	397,498
Operating Segments | Action Figures, Building Sets, Games, and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	195,030	222,728	313,155	372,981
Sales adjustments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ (82,424)	$ (102,203)	$ (158,319)	$ (193,083)

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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