Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended								12 Months Ended
	May 01, 2019	Apr. 30, 2019	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	May 04, 2019	Feb. 02, 2019	Nov. 03, 2018	Aug. 04, 2018	May 05, 2018	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Earnings Per Share [Abstract]
Net earnings (loss) attributable to Guess, Inc.			$ 79,604	$ 12,423	$ 25,322	$ (21,374)	$ 23,232	$ (13,442)	$ 25,530	$ (21,221)	$ 95,975	$ 14,099	$ (7,894)
Less net earnings attributable to nonvested restricted stockholders											850	756	764
Net earnings (loss) attributable to common stockholders											$ 95,125	$ 13,343	$ (8,658)
Weighted average common shares used in basic computations											70,461,000	80,146,000	82,189,000
Effect of dilutive securities:
Stock options and restricted stock units (in shares)											1,208,000	1,443,000	0
Weighted average common shares used in diluted computations											71,669,000	81,589,000	82,189,000
Net earnings (loss) per common share attributable to common stockholders:
Basic (in dollars per share)			$ 1.21	$ 0.19	$ 0.36	$ (0.27)	$ 0.29	$ (0.17)	$ 0.32	$ (0.27)	$ 1.35	$ 0.17	$ (0.11)
Diluted (in dollars per share)			$ 1.18	$ 0.18	$ 0.35	$ (0.27)	$ 0.28	$ (0.17)	$ 0.31	$ (0.27)	$ 1.33	$ 0.16	$ (0.11)
Antidilutive securities excluded from computation of earnings per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)											2,911,685	1,526,717	2,925,549
Conversion price (in dollars per share)	$ 46.88	$ 25.78									$ 25.78
Warrants outstanding (in shares)		11,600,000	11,600,000								11,600,000
Strike price of warrants (in dollars per share)		$ 46.88	$ 46.88								$ 46.88
Potentially dilutive shares
Antidilutive securities excluded from computation of earnings per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)												652,494
Performance-based or market-based units
Antidilutive securities excluded from computation of earnings per share
Awards subject to performance or market conditions that were excluded from the computation of diluted weighted average common shares (in shares)											240,143	928,026	899,345