Earnings (Loss) per Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	May 04, 2024	Apr. 29, 2023
Earnings Per Share [Abstract]
Net earnings (loss) attributable to Guess?, Inc.	$ 13,022	$ (11,805)
Less net earnings attributable to nonvested restricted stockholders	318	164
Net earnings (loss) attributable to common stockholders	12,704	(11,969)
Add interest expense related to the convertible senior notes	122	0
Net earnings (loss) attributable to common stockholders used in diluted computations	$ 12,826	$ (11,969)
Weighted average common shares used in basic computations (in shares)	52,908,000	54,348,000
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	1,538,000	0
Convertible senior notes (in shares)	1,092,000	0
Weighted average common shares used in diluted computations (in shares)	55,538,000	54,348,000
Net earnings (loss) per common share attributable to common stockholders:
Basic (in dollars per share)	$ 0.24	$ (0.22)
Diluted (in dollars per share)	$ 0.23	$ (0.22)
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)	14,741,039	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