Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 29, 2023	Oct. 30, 2022	Oct. 29, 2023	Oct. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 158	$ 178	$ 455	$ 497
Net interest rate swap (loss) gain, net of tax (expense) of $(1), $(6), $(1) and $(12), respectively	(4)	32	(4)	60
Total comprehensive income	154	210	451	557
Less: comprehensive income attributable to non-controlling interests	45	79	145	208
Total comprehensive income attributable to Core & Main, Inc.	$ 109	$ 131	$ 306	$ 349