Fair Value Measurements and Financial Instruments - Narrative (Detail) - USD ($) $ in Millions	Feb. 01, 2020	Feb. 02, 2019
Forward Contracts [Abstract]
Notional Amount Of Foreign Currency Derivatives Gross	$ 144.6	$ 240.0

Notional Amount of Foreign Currency Derivatives, Gross

No definition available.

Name:	gme_NotionalAmountOfForeignCurrencyDerivativesGross
Namespace Prefix:	gme_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant