Segment Information - Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Accounts receivable and inventories, net	$ 2,038,944	$ 1,729,314	$ 2,496,140
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Accounts receivable and inventories, net	1,915,191	1,621,601	2,402,194
Operating Segments | North America
Segment Reporting, Asset Reconciling Item [Line Items]
Accounts receivable and inventories, net	912,008	692,232	1,060,312
Operating Segments | International
Segment Reporting, Asset Reconciling Item [Line Items]
Accounts receivable and inventories, net	917,668	829,185	1,144,772
Operating Segments | American Girl
Segment Reporting, Asset Reconciling Item [Line Items]
Accounts receivable and inventories, net	85,515	100,184	197,110
Corporate and Other
Segment Reporting, Asset Reconciling Item [Line Items]
Accounts receivable and inventories, net	$ 123,753	$ 107,713	$ 93,946