Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jul. 31, 2021	May 01, 2021	Aug. 01, 2020	May 02, 2020	Jul. 31, 2021	Aug. 01, 2020
Earnings Per Share [Abstract]
Net income	$ 495,509	$ 361,756	$ 276,843	$ (143,422)	$ 857,265	$ 133,421
Weighted average common shares outstanding - basic (in shares)	84,512		84,130		84,631	83,932
Dilutive effect of stock-based awards (in shares)	6,297		3,577		6,352	2,868
Dilutive effect of Convertible Senior Notes and warrants (in shares)	18,462		1,119		16,658	560
Weighted average common shares outstanding - diluted (in shares)	109,271		88,826		107,641	87,360
Earnings per common share (in dollars per share) - basic	$ 5.86		$ 3.29		$ 10.13	$ 1.59
Earnings per common share (in dollars per share) - diluted	$ 4.53		$ 3.12		$ 7.96	$ 1.53
Share-based Payment Arrangement
Stock-based awards excluded from diluted shares
Stock-based awards excluded from diluted shares (in shares)	2		2,796		82	3,090
Bond Hedge
Stock-based awards excluded from diluted shares
Stock-based awards excluded from diluted shares (in shares)	10,700				9,900