Derivative Financial Instruments - Gains (Losses) Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings (loss)
Gains (Losses) Recognized in OCI	$ 1,633	$ (7,897)	$ 3,414	$ (4,361)
Gains (Losses) Reclassified from Accumulated OCI into Earnings (Loss)	(1,024)	2,462	(1,422)	4,450
Foreign exchange currency contracts | Cost of product sales
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings (loss)
Gains (Losses) Recognized in OCI	1,781	(7,758)	3,292	(3,348)
Gains (Losses) Reclassified from Accumulated OCI into Earnings (Loss)	(829)	2,504	(1,291)	4,495
Interest rate swap | Interest expense
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings (loss)
Gains (Losses) Recognized in OCI	(148)	(139)	122	(1,013)
Gains (Losses) Reclassified from Accumulated OCI into Earnings (Loss)	$ (195)	$ (42)	$ (131)	$ (45)