Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 131,197	$ 370,932	$ (152,598)	$ 1,204,795
Other comprehensive income (loss)	0	0	0	0
Comprehensive income (loss)	$ 131,197	$ 370,932	$ (152,598)	$ 1,204,795