Restructuring Provision - Summary of Corporate Initiative Costs by Operating Segment (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jul. 31, 2021	Apr. 30, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Restructuring Cost And Reserve [Line Items]
Provision	$ 0	$ 0	$ 7,368,000	$ 0	$ 14,608,000
Cost of Sales
Restructuring Cost And Reserve [Line Items]
Provision			0		3,508,000
Selling, General and Administrative
Restructuring Cost And Reserve [Line Items]
Provision			7,368,000		11,100,000
Watch and Accessory Brands
Restructuring Cost And Reserve [Line Items]
Provision			7,368,000		14,608,000
Watch and Accessory Brands | United States
Restructuring Cost And Reserve [Line Items]
Provision			6,631,000		11,335,000
Watch and Accessory Brands | International
Restructuring Cost And Reserve [Line Items]
Provision			737,000		3,273,000
Company Stores
Restructuring Cost And Reserve [Line Items]
Provision			$ 0		$ 0