Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 27, 2024	Oct. 29, 2023	Oct. 27, 2024	Oct. 29, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 140	$ 158	$ 367	$ 455
Net interest rate swap loss, net of tax benefit (expense) of $3, $(1), $8 and $(1), respectively	(9)	(4)	(24)	(4)
Total comprehensive income	131	154	343	451
Less: comprehensive income attributable to non-controlling interests	7	45	19	145
Total comprehensive income attributable to Core & Main, Inc.	$ 124	$ 109	$ 324	$ 306