Quarterly Information (Unaudited) (Details) $ / shares in Units, € in Millions	1 Months Ended		3 Months Ended										12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2018 EUR (€)	Feb. 02, 2019 USD ($) $ / shares	Feb. 02, 2019 EUR (€)	Nov. 03, 2018 USD ($) $ / shares	Aug. 04, 2018 USD ($) $ / shares	May 05, 2018 USD ($) $ / shares	Feb. 03, 2018 USD ($) $ / shares	Oct. 28, 2017 USD ($) $ / shares	Oct. 28, 2017 EUR (€)	Jul. 29, 2017 USD ($) $ / shares	Apr. 29, 2017 USD ($) $ / shares	Feb. 02, 2019 USD ($) $ / shares	Feb. 02, 2019 EUR (€)	Feb. 03, 2018 USD ($) $ / shares	Jan. 28, 2017 USD ($) $ / shares
Summary of the unaudited quarterly financial information
Net revenue			$ 837,127,000		$ 605,407,000	$ 645,871,000	$ 521,289,000	$ 792,164,000	$ 548,953,000		$ 568,292,000	$ 454,345,000
Gross profit			306,092,000		220,143,000	239,431,000	173,938,000	295,070,000	191,109,000		198,027,000	144,642,000	$ 939,604,000		$ 828,848,000	$ 745,040,000
Net earnings (loss)			25,235,000		(12,816,000)	25,734,000	(20,987,000)	3,107,000	(1,662,000)		15,881,000	(21,227,000)	17,166,000		(3,901,000)	25,398,000
Net earnings (loss) attributable to Guess, Inc.			$ 23,232,000		$ (13,442,000)	$ 25,530,000	$ (21,221,000)	$ 1,040,000	$ (2,860,000)		$ 15,219,000	$ (21,293,000)	$ 14,099,000		$ (7,894,000)	$ 22,761,000
Net earnings (loss) per common share attributable to common stockholders:
Basic (in dollars per share) | $ / shares			$ 0.29		$ (0.17)	$ 0.32	$ (0.27)	$ (0.01)	$ (0.04)		$ 0.18	$ (0.26)	$ 0.17		$ (0.11)	$ 0.27
Diluted (in dollars per share) | $ / shares			$ 0.28		$ (0.17)	$ 0.31	$ (0.27)	$ (0.01)	$ (0.04)		$ 0.18	$ (0.26)	$ 0.16		$ (0.11)	$ 0.27
Selected quarterly financial information
Professional service and legal costs and related costs			$ 200,000		$ 100,000	$ 2,000,000	$ 3,800,000	$ 500,000	$ 0		$ 0	$ 0
Net gains (losses) on lease terminations			(300,000)		0	0	(200,000)	(100,000)	11,500,000		0	0	$ (477,000)		$ 11,373,000	$ (695,000)
Asset impairment charges			1,900,000		1,300,000	$ 3,000,000	$ 700,000	2,500,000	2,000,000		$ 1,200,000	$ 2,800,000	6,939,000		8,479,000
European Commission fine	$ 45,600,000	€ 39.8	3,200,000	€ 2.8					$ 42,400,000	€ 37.0			$ 45,637,000	€ 39.8	$ 0	$ 0
Provisional income tax expense (benefit)								47,900,000
Income tax benefit from reversal of provisional amount			25,800,000		$ (6,300,000)			(19,600,000)
Provisional charge for remeasurement of U.S. deferred tax assets as a result of the enactment of the Tax Reform								24,900,000
Provisional charge for the estimated effects of the transitional tax on the deemed repatriation of foreign earnings as a result of the enactment of the Tax Reform								$ 23,000,000
CEO
Selected quarterly financial information
Prior period reclassification adjustment			5,200,000
Cash related severance payments			2,400,000
Non-cash stock-based compensation expenses			$ 2,800,000