Loss per Share - Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	May 02, 2020	May 04, 2019
Earnings Per Share [Abstract]
Net loss attributable to Guess, Inc.	$ (157,666)	$ (21,374)
Less net earnings attributable to nonvested restricted stockholders	0	161
Net loss attributable to common stockholders	$ (157,666)	$ (21,535)
Weighted average common shares used in basic computations (in shares)	65,715,000	79,925,000
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	0	0
Weighted average common shares used in diluted computations (in shares)	65,715,000	79,925,000
Net loss per common share attributable to common stockholders:
Basic (in dollars per share)	$ (2.40)	$ (0.27)
Diluted (in dollars per share)	$ (2.40)	$ (0.27)
Antidilutive securities excluded from computation of earnings (loss) per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)	3,157,824	2,137,004
Potentially Dilutive Shares
Antidilutive securities excluded from computation of earnings (loss) per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)	484,674	1,052,518
Performance Shares
Antidilutive securities excluded from computation of earnings (loss) per share
Performance or market awards excluded from computation of EPS (in shares)	227,729	1,075,085