Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 03, 2025	Jul. 28, 2024	Aug. 03, 2025	Jul. 28, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 141	$ 126	$ 246	$ 227
Net comprehensive loss, net of tax benefit of $3, $11, $10 and $5, respectively	(8)	(33)	(29)	(15)
Total comprehensive income	133	93	217	212
Less: comprehensive income attributable to non-controlling interests	7	5	11	12
Total comprehensive income attributable to Core & Main, Inc.	$ 126	$ 88	$ 206	$ 200