Non-controlling Interests (Details) - Holdings - shares				12 Months Ended
	Jan. 28, 2024	Jan. 29, 2023	Jan. 30, 2022	Feb. 02, 2025	Jan. 28, 2024
Partnership Interests
Partnership Interests (in units)	200,906,884	245,236,634		197,529,664	200,906,884
Retirement of Partnership Interests (in units)				(3,974,820)	(45,000,000)
Issuance of Partnership Interests (in units)				443,089	346,977
Exchange of Partnership Interests (in units)				(10,103)	(48,019)
Vesting of Partnership Interests (in units)				164,614	371,292
Ownership Percentage
Ownership Percentage	100.00%	100.00%	100.00%
Retirement of Partnership interests (percent)				0.00%	0.00%
Issuance of Partnership Interests (percent)				0.00%	0.00%
Exchange of Partnership Interests (percent)				0.00%	0.00%
Vesting of Partnership Interests (percent)				0.00%	0.00%
Core & Main
Partnership Interests
Partnership Interests (in units)	191,663,608	172,765,161		189,815,899	191,663,608
Retirement of Partnership Interests (in units)				(3,974,820)	(28,131,551)
Issuance of Partnership Interests (in units)				443,089	346,977
Exchange of Partnership Interests (in units)				1,684,022	46,683,021
Vesting of Partnership Interests (in units)				0	0
Ownership Percentage
Ownership Percentage	96.10%	95.40%	70.40%
Retirement of Partnership interests (percent)				0.10%	(1.80%)
Issuance of Partnership Interests (percent)				0.00%	0.10%
Exchange of Partnership Interests (percent)				0.90%	23.20%
Vesting of Partnership Interests (percent)				(0.10%)	(0.10%)
Continuing Limited Partners
Partnership Interests
Partnership Interests (in units)	9,243,276	72,471,473		7,713,765	9,243,276
Retirement of Partnership Interests (in units)				0	(16,868,449)
Issuance of Partnership Interests (in units)				0	0
Exchange of Partnership Interests (in units)				(1,694,125)	(46,731,040)
Vesting of Partnership Interests (in units)				164,614	371,292
Ownership Percentage
Ownership Percentage	3.90%	4.60%	29.60%
Retirement of Partnership interests (percent)				0.10%	(1.80%)
Issuance of Partnership Interests (percent)				0.00%	(0.10%)
Exchange of Partnership Interests (percent)				(0.90%)	(23.20%)
Vesting of Partnership Interests (percent)				0.10%	0.10%