Quarterly Information (Unaudited) (Details) - USD ($)	3 Months Ended																12 Months Ended
	Feb. 03, 2018		Oct. 28, 2017		Jul. 29, 2017		Apr. 29, 2017		Jan. 28, 2017		Oct. 29, 2016		Jul. 30, 2016		Apr. 30, 2016		Feb. 03, 2018		Jan. 28, 2017		Jan. 30, 2016
Summary of the unaudited quarterly financial information
Net revenue	$ 792,164,000	[1],[2]	$ 548,953,000	[1],[2]	$ 568,292,000	[1],[2]	$ 454,345,000	[1],[2]	$ 674,004,000	[1],[2]	$ 531,976,000	[1],[2]	$ 540,412,000	[1],[2]	$ 444,061,000	[1],[2]	$ 2,363,754,000	[3],[4]	$ 2,190,453,000	[3],[4],[5]	$ 2,184,495,000	[3],[4],[5]
Gross profit	295,070,000	[1]	191,109,000	[1]	198,027,000	[1]	144,642,000	[1]	236,407,000	[1]	180,242,000	[1]	185,632,000	[1]	142,759,000	[1]	828,848,000		745,040,000		787,430,000
Net earnings (loss)	3,107,000	[1]	(1,662,000)	[1]	15,881,000	[1]	(21,227,000)	[1]	8,656,000	[1]	9,729,000	[1]	32,167,000	[1]	(25,154,000)	[1]	(3,901,000)		25,398,000		84,815,000
Net earnings (loss) attributable to Guess, Inc.	$ 1,040,000	[1]	$ (2,860,000)	[1]	$ 15,219,000	[1]	$ (21,293,000)	[1]	$ 6,567,000	[1]	$ 9,103,000	[1]	$ 32,269,000	[1]	$ (25,178,000)	[1]	$ (7,894,000)		$ 22,761,000		$ 81,851,000
Net earnings (loss) per common share attributable to common stockholders:
Basic (in dollars per share)	$ 0.01	[1],[6],[7],[8],[9]	$ (0.04)	[1],[6],[7],[8],[9]	$ 0.18	[1],[6],[7],[8],[9]	$ (0.26)	[1],[6],[7],[8],[9]	$ 0.08	[1],[6],[8],[9],[10],[11],[12]	$ 0.11	[1],[6],[8],[9],[10],[11],[12]	$ 0.38	[1],[6],[8],[9],[10],[11],[12]	$ (0.30)	[1],[6],[8],[9],[10],[11],[12]	$ (0.11)		$ 0.27		$ 0.97
Diluted (in dollars per share)	$ 0.01	[1],[6],[7],[8],[9]	$ (0.04)	[1],[6],[7],[8],[9]	$ 0.18	[1],[6],[7],[8],[9]	$ (0.26)	[1],[6],[7],[8],[9]	$ 0.08	[1],[6],[8],[9],[10],[11],[12]	$ 0.11	[1],[6],[8],[9],[10],[11],[12]	$ 0.38	[1],[6],[8],[9],[10],[11],[12]	$ (0.30)	[1],[6],[8],[9],[10],[11],[12]	$ (0.11)		$ 0.27		$ 0.96
Selected quarterly financial information
Number of days in fiscal period	98 days		91 days		91 days		91 days		91 days		91 days		91 days		91 days		371 days		364 days		364 days
Net gains (losses) on lease terminations	$ 100,000		$ (11,500,000)		$ 0		$ 0		$ 0		$ 0		$ 600,000		$ 100,000		$ (11,373,000)		$ 695,000		$ 2,337,000
Asset impairment charges	2,500,000		2,000,000		1,200,000		2,800,000		32,900,000		800,000		500,000		200,000		8,479,000		34,385,000		2,287,000
Additional income tax expense resulting from enactment of Tax Reform	47,900,000																47,900,000
Provisional charge for remeasurement of U.S. deferred tax assets as a result of the enactment of the Tax Reform	24,856,000																24,856,000
Provisional charge for the estimated effects of the transitional tax on the deemed repatriation of foreign earnings as a result of the enactment of the Tax Reform	$ 23,034,000																23,034,000
Restructuring charges															6,083,000		0		6,083,000		0
Estimated exit tax charge															1,911,000				1,911,000
Net proceeds from sale of the Company's minority interest equity holding in a privately-held boutique apparel company													34,800,000						34,800,000
Cumulative valuation reserve									6,830,000								$ 0	[13]	6,830,000	[13]	0	[13]
Net revenue
Selected quarterly financial information
Prior period reclassification adjustment			(5,200,000)		(5,400,000)		(4,200,000)		(5,300,000)		(4,300,000)		(4,500,000)		(4,800,000)				(18,900,000)		$ (19,800,000)
Cost of product sales
Selected quarterly financial information
Prior period reclassification adjustment			$ 5,200,000		$ 5,400,000		$ 4,200,000		$ 5,300,000		$ 4,300,000		4,500,000		$ 4,800,000
Other income/expense
Selected quarterly financial information
Gain from sale of the Company's minority interest equity holding in a privately-held boutique apparel company													$ 22,300,000						$ 22,300,000

[1] All fiscal quarters presented consisted of 13 weeks with the exception of the quarter ended February 3, 2018 which consisted of 14 weeks.

[2] During the fourth quarter of fiscal 2018, the Company reclassified net royalties received on the Company’s inventory purchases of licensed product from net revenue to cost of product sales. Accordingly, prior period amounts related to net royalties, net revenue and cost of product sales have been adjusted to conform to the current period presentation. This resulted in a decrease to net revenue and cost of product sales of $4.2 million, $5.4 million and $5.2 million during the first, second and third quarters of fiscal 2018, respectively. This also resulted in a decrease to net revenue and cost of product sales of $4.8 million, $4.5 million, $4.3 million and $5.3 million during the first, second, third and fourth quarters of fiscal 2017, respectively. This reclassification had no impact on previously reported gross profit, net earnings (loss) or net earnings (loss) per share. Refer to Note 1 for further information regarding this reclassification.

[3] During the fourth quarter of fiscal 2018, the Company reclassified net royalties received on the Company’s inventory purchases of licensed product from net revenue to cost of product sales. Accordingly, net revenue has been adjusted for fiscal 2017 and fiscal 2016 to conform to the current period presentation. This reclassification had no impact on previously reported earnings from operations.

[4] The Company operates on a 52/53-week fiscal year calendar, which ends on the Saturday nearest to January 31 of each year. The results for fiscal 2018 included the impact of an additional week which occurred during the fourth quarter ended February 3, 2018.

[5] During the fourth quarter of fiscal 2018, the Company reclassified net royalties received on the Company’s inventory purchases of licensed product from net revenue to cost of product sales. Accordingly, net revenue by geographic area has been adjusted for fiscal 2017 and fiscal 2016 to conform to the current period presentation.

[6] During each of the periods presented, the Company recognized asset impairment charges for certain retail locations resulting from under-performance and expected store closures. The Company recorded asset impairment charges of $2.8 million, $1.2 million, $2.0 million and $2.5 million, respectively, during the first, second, third and fourth quarters of fiscal 2018. The Company also recorded asset impairment charges of $0.2 million, $0.5 million, $0.8 million and $32.9 million, respectively, during the first, second, third and fourth quarters of fiscal 2017. Refer to Note 5 for further detail regarding asset impairment charges.

[7] During fiscal 2018, the Company recognized additional tax expense of $47.9 million related to the enactment of the Tax Reform. This is comprised of a $24.9 million charge for the provisional re-measurement of certain deferred taxes and related amounts and a provisional charge of $23.0 million to income tax expense for the estimated effects of the transitional tax on the deemed repatriation of foreign earnings. These charges were recorded during the fourth quarter of fiscal 2018. Refer to Note 11 for further detail.

[8] Per common share amounts for the quarters and full years have been calculated separately. Accordingly, quarterly amounts may not add to the annual amount because of differences in the average common shares outstanding during each period.

[9] The Company recorded net gains (losses) on lease terminations of $(11.5) million and $0.1 million during the third and fourth quarters of fiscal 2018, respectively. There were no net gains (losses) on lease terminations recognized during the first or second quarters of fiscal 2018. During the first and second quarters of fiscal 2017, the Company recorded net gains on lease terminations of $0.1 million and $0.6 million, respectively. There were no net gains (losses) on lease terminations recognized during the third or fourth quarters of fiscal 2017. Refer to Note 1 for further information regarding net gains (losses) on lease terminations.

[10] During fiscal 2017, the Company recorded restructuring charges of $6.1 million and a related estimated exit tax charge of approximately $1.9 million. The restructuring charges and related estimated exit tax charge were recorded during the three months ended April 30, 2016. Refer to Note 9 for further detail regarding these charges.

[11] During fiscal 2017, the Company recorded valuation reserves of $6.8 million resulting from jurisdictions where there have been cumulative net operating losses, limiting the Company’s ability to consider other subjective evidence to continue to recognize the existing deferred tax assets. The Company recorded the valuation reserve during the three months ended January 28, 2017. Refer to Note 11 for further detail.

[12] During fiscal 2017, the Company sold its minority interest equity holding in a privately-held boutique apparel company for net proceeds of approximately $34.8 million, which resulted in a gain of approximately $22.3 million which was recorded in other income. The gain was recorded during the three months ended July 30, 2016.

[13] Amounts represent valuation reserves resulting from jurisdictions where there have been cumulative net operating losses, limiting the Company’s ability to consider other subjective evidence to continue to recognize the existing deferred tax assets.