Segment reporting (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2021 USD ($) segment	Oct. 30, 2020 USD ($) segment	Oct. 29, 2021 USD ($) segment	Oct. 30, 2020 USD ($) segment
Net sales data for classes of similar products
Net sales	$ 8,517,839	$ 8,199,625	$ 25,569,001	$ 25,332,315
Number of reportable segments
Number of reportable operating segments | segment	1	1	1	1
Consumables
Net sales data for classes of similar products
Net sales	$ 6,704,750	$ 6,385,315	$ 19,695,835	$ 19,585,114
Seasonal
Net sales data for classes of similar products
Net sales	913,872	906,623	3,054,565	2,986,146
Home products
Net sales data for classes of similar products
Net sales	551,109	517,147	1,683,614	1,601,450
Apparel
Net sales data for classes of similar products
Net sales	$ 348,108	$ 390,540	$ 1,134,987	$ 1,159,605