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	Jan. 30, 2021	Oct. 31, 2020	Aug. 01, 2020	May 02, 2020	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	May 04, 2019	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Earnings Per Share [Abstract]
Net earnings (loss) attributable to Guess?, Inc.			$ 70,419	$ 26,376	$ (20,358)	$ (157,666)	$ 79,604	$ 12,423	$ 25,322	$ (21,374)	$ (81,229)	$ 95,975	$ 14,099
Less net earnings attributable to nonvested restricted stockholders											181	850	756
Net earnings (loss) attributable to common stockholders											$ (81,410)	$ 95,125	$ 13,343
Weighted average common shares used in basic computations											64,179,000	70,461,000	80,146,000
Effect of dilutive securities:
Stock options and restricted stock units (in shares)											0	1,208,000	1,443,000
Weighted average common shares used in diluted computations											64,179,000	71,669,000	81,589,000
Net earnings (loss) per common share attributable to common stockholders:
Basic (in dollars per share)			$ 1.10	$ 0.41	$ (0.31)	$ (2.40)	$ 1.21	$ 0.19	$ 0.36	$ (0.27)	$ (1.27)	$ 1.35	$ 0.17
Diluted (in dollars per share)			$ 1.07	$ 0.41	$ (0.31)	$ (2.40)	$ 1.18	$ 0.18	$ 0.35	$ (0.27)	$ (1.27)	$ 1.33	$ 0.16
Antidilutive securities excluded from computation of earnings per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)											2,870,479	2,911,685	1,526,717
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
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)											0	240,143	928,026
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)											867,704