Non-controlling Interests (Details) - Holdings - shares	9 Months Ended	12 Months Ended
	Oct. 27, 2024	Jan. 28, 2024
Partnership Interests
Beginning balance (in units)	200,906,884
Retirement of Partnership Interests (in units)	(2,890,483)
Issuance of Partnership Interests (in units)	276,808
Exchange of Partnership Interests (in units)	(6,976)
Vesting of Partnership Interests (in units)	164,614
Ending balance (in units)	198,450,847	200,906,884
Ownership Percentage
Beginning balance (percent)	100.00%	100.00%
Retirement of Partnership Interests (percent)	0.00%
Issuance of Partnership Interests (percent)	0.00%
Exchange of Partnership Interests (percent)	0.00%
Vesting of Partnership Interests (percent)	0.00%
Ending balance (percent)	100.00%	100.00%
Core & Main
Partnership Interests
Beginning balance (in units)	191,663,608
Retirement of Partnership Interests (in units)	(2,890,483)
Issuance of Partnership Interests (in units)	276,808
Exchange of Partnership Interests (in units)	1,139,501
Vesting of Partnership Interests (in units)	0
Ending balance (in units)	190,189,434	191,663,608
Ownership Percentage
Beginning balance (percent)	95.80%	95.40%
Retirement of Partnership Interests (percent)	(0.10%)
Issuance of Partnership Interests (percent)	0.00%
Exchange of Partnership Interests (percent)	0.60%
Vesting of Partnership Interests (percent)	(0.10%)
Ending balance (percent)	95.80%	95.40%
Management Feeder
Partnership Interests
Beginning balance (in units)	9,243,276
Retirement of Partnership Interests (in units)	0
Issuance of Partnership Interests (in units)	0
Exchange of Partnership Interests (in units)	(1,146,477)
Vesting of Partnership Interests (in units)	164,614
Ending balance (in units)	8,261,413	9,243,276
Ownership Percentage
Beginning balance (percent)	4.20%	4.60%
Retirement of Partnership Interests (percent)	0.10%
Issuance of Partnership Interests (percent)	0.00%
Exchange of Partnership Interests (percent)	(0.60%)
Vesting of Partnership Interests (percent)	0.10%
Ending balance (percent)	4.20%	4.60%