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Segment Information - Worldwide Revenues by Top 3 Power Brands (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		9 Months Ended
	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 1,481,557	$ 689,246	$ 1,437,451	$ 844,706	$ 1,549,309	$ 1,553,078	$ 3,030,866	$ 2,990,529
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,656,910		1,606,636				3,399,302	3,360,767
Operating Segments | Barbie
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	412,840		374,707				762,849	698,131
Operating Segments | Hot Wheels
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	293,295		234,993				619,030	547,239
Operating Segments | Fisher-Price and Thomas & Friends
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	396,339		409,497				791,146	833,468
Operating Segments | Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	554,436		587,439				1,226,277	1,281,929
Sales adjustments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ (175,353)		$ (169,185)				$ (368,436)	$ (370,238)

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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