Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2023	May 01, 2022
Income Statement [Abstract]
Net sales	$ 1,574	$ 1,598
Cost of sales	1,135	1,177
Gross profit	439	421
Operating expenses:
Selling, general and administrative	223	206
Depreciation and amortization	35	35
Total operating expenses	258	241
Operating income	181	180
Interest expense	17	13
Income before provision for income taxes	164	167
Provision for income taxes	31	30
Net income	133	137
Less: net income attributable to non-controlling interests	47	51
Net income attributable to Core & Main, Inc.	$ 86	$ 86
Earnings per share:
Basic (in dollars per share)	$ 0.50	$ 0.51
Diluted (in dollars per share)	$ 0.50	$ 0.50
Basic (shares)	171,597,317	167,536,662
Diluted (shares)	243,716,764	246,145,536