Subsequent Events (Details) - USD ($)		3 Months Ended			6 Months Ended
	Aug. 25, 2021	Jul. 31, 2021	Oct. 31, 2020	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Subsequent Event
Dividends per share (in dollars per share)		$ 0.1125	$ 0.1125	$ 0	$ 0.2250	$ 0
Share Repurchase Program
Subsequent Event
Authorized amount for repurchase		$ 500,000,000			$ 500,000,000
Remaining purchase amount authorized		$ 47,800,000			$ 47,800,000
Subsequent Event
Subsequent Event
Dividends per share (in dollars per share)	$ 0.1125
Subsequent Event | Share Repurchase Program
Subsequent Event
Authorized amount for repurchase	$ 200,000,000