Basis of Presentation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016	Jan. 29, 2017
Fiscal Year
Number of days in fiscal year						364 days	364 days
Sale of Minority Interest Equity Holding
Net proceeds from sale of the Company's minority interest equity holding in a privately-held boutique apparel company		$ 34,800
New accounting pronouncements and changes in accounting principles
Increase to income tax expense from tax shortfalls	$ 6,453	10,593	$ 5,050	$ 5,802
Negative impact on net earnings (loss) attributable to Guess, Inc. from tax shortfalls	$ (15,219)	$ (32,269)	$ 6,074	$ (7,091)
Unfavorable impact on basic loss per share from tax shortfalls	$ (0.18)	$ (0.38)	$ 0.08	$ (0.08)
Unfavorable impact on diluted loss per share from tax shortfalls	$ (0.18)	$ (0.38)	$ 0.08	$ (0.08)
Increase in operating cash flows from reclass of excess tax benefits			$ (9,665)	$ (17,406)
Decrease in financing cash flows from reclass of excess tax benefits			55,091	23,404
Other income/expense
Sale of Minority Interest Equity Holding
Gain from sale of the Company's minority interest equity holding in a privately-held boutique apparel company		$ 22,300
Accounting Standards Update 2016-09
New accounting pronouncements and changes in accounting principles
Increase to income tax expense from tax shortfalls	$ 100		700
Negative impact on net earnings (loss) attributable to Guess, Inc. from tax shortfalls	$ 100		$ 700
Unfavorable impact on basic loss per share from tax shortfalls			$ 0.01
Unfavorable impact on diluted loss per share from tax shortfalls			$ 0.01
Cumulative adjustment to reduce retained earnings as a result of adoption of guidance which allows entities to account for forfeitures as they occur								$ 300
Forecast
Fiscal Year
Number of days in fiscal year					371 days
Restatement adjustment | Accounting Standards Update 2016-09
New accounting pronouncements and changes in accounting principles
Increase in operating cash flows from reclass of excess tax benefits				200
Decrease in financing cash flows from reclass of excess tax benefits				$ 200