Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Apr. 28, 2024	Apr. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 101	$ 133
Net interest rate swap gain (loss), net of tax (expense) benefit of $(6) and $1, respectively	18	(8)
Total comprehensive income	119	125
Less: comprehensive income attributable to non-controlling interests	7	44
Total comprehensive income attributable to Core & Main, Inc.	$ 112	$ 81