Retirement Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 29, 2022	Jan. 30, 2021	Feb. 01, 2020
Defined Contribution Plan Disclosure [Line Items]
401(k) plan, pretax contribution percent of salary	50.00%
401(k) plan, employer match percent	50.00%
401(k) plan, employer matching contribution percent	6.00%
401(k) plan, pretax expense	$ 11.1	$ 11.6	$ 10.0
BJS Non-contributory Deferred Contribution Retirement Plan
Defined Contribution Plan Disclosure [Line Items]
401(k) plan, employer match percent	5.00%
401(k) plan, pretax expense	$ 1.8	$ 2.8	$ 2.6
401(k) plan, contribution vesting period	4 years