Earnings (Loss) per Share - Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019
Earnings Per Share [Abstract]
Net earnings (loss) attributable to Guess, Inc.	$ (20,358)	$ 25,322	$ (178,024)	$ 3,948
Less net earnings attributable to nonvested restricted stockholders	0	233	0	235
Net (earnings) loss attributable to common stockholders	$ (20,358)	$ 25,089	$ (178,024)	$ 3,713
Weighted average common shares used in basic computations (in shares)	65,177,000	70,508,000	65,446,000	75,216,000
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	0	848,000	0	939,000
Weighted average common shares used in diluted computations (in shares)	65,177,000	71,356,000	65,446,000	76,155,000
Net earnings (loss) per common share attributable to common stockholders:
Basic (in dollars per share)	$ (0.31)	$ 0.36	$ (2.72)	$ 0.05
Diluted (in dollars per share)	$ (0.31)	$ 0.35	$ (2.72)	$ 0.05
Antidilutive securities excluded from computation of earnings (loss) per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)	4,121,433	3,258,910	3,890,881	2,899,760
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)	262,086		382,222
Performance Shares
Antidilutive securities excluded from computation of earnings (loss) per share
Performance or market awards excluded from computation of EPS (in shares)	525,875	1,228,017	525,875	1,228,017