Earnings (Loss) per Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 29, 2023	Apr. 30, 2022
Earnings Per Share [Abstract]
Net earnings (loss) attributable to Guess?, Inc.	$ (11,805)	$ 7,970
Less net earnings attributable to nonvested restricted stockholders	164	56
Net earnings (loss) attributable to common stockholders	(11,969)	7,914
Add interest expense related to the convertible senior notes	0	902
Net earnings (loss) attributable to common stockholders used in diluted computations	$ (11,969)	$ 8,816
Weighted average common shares used in basic computations (in shares)	54,348,000	61,052,000
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	0	1,666,000
Convertible senior notes (in shares)	0	11,751,000
Weighted average common shares used in diluted computations (in shares)	54,348,000	74,469,000
Net earnings (loss) per common share attributable to common stockholders:
Basic (in dollars per share)	$ (0.22)	$ 0.13
Diluted (in dollars per share)	$ (0.22)	$ 0.12
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)	12,834,308
Stock options and restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)	1,351,331