Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Aug. 01, 2021	Jul. 31, 2022	Aug. 01, 2021
Disaggregation of Revenue [Line Items]
Total net sales	$ 1,861	$ 1,298	$ 3,459	$ 2,353
Pipes, valves & fittings products
Disaggregation of Revenue [Line Items]
Total net sales	1,291	888	2,401	1,593
Storm drainage products
Disaggregation of Revenue [Line Items]
Total net sales	266	173	475	303
Fire protection products
Disaggregation of Revenue [Line Items]
Total net sales	192	138	364	257
Meter products
Disaggregation of Revenue [Line Items]
Total net sales	$ 112	$ 99	$ 219	$ 200