Non-controlling Interests (Details) - Holdings - shares			6 Months Ended
	Jul. 30, 2023	Jan. 30, 2022	Jul. 30, 2023	Jan. 29, 2023
Partnership Interests
Partnership Interests (in units)	225,762,803		225,762,803	245,236,634
Issuance of Partnership Interests (in units)			233,337
Exchange of Partnership Interests (in units)			(3,170)
Vesting of Partnership Interests (in units)			296,002
Ownership Percentage
Ownership Percentage	100.00%	100.00%
Partnership Interests, Retirement, Increase (Decrease), Percentage			0.00%
Partnership Interests, Retirement, Units			(20,000,000)
Issuance of Partnership Interests (percent)			0.00%
Exchange of Partnership Interests (percent)			0.00%
Vesting of Partnership Interests (percent)			0.00%
Core & Main
Partnership Interests
Partnership Interests (in units)	168,590,990		168,590,990	172,765,161
Issuance of Partnership Interests (in units)			233,337
Exchange of Partnership Interests (in units)			(8,095,403)
Vesting of Partnership Interests (in units)			0
Ownership Percentage
Ownership Percentage	74.70%	70.40%
Partnership Interests, Retirement, Increase (Decrease), Percentage			(0.70%)
Partnership Interests, Retirement, Units			(12,502,911)
Issuance of Partnership Interests (percent)			0.10%
Exchange of Partnership Interests (percent)			(3.60%)
Vesting of Partnership Interests (percent)			0.10%
Continuing Limited Partners
Partnership Interests
Partnership Interests (in units)	57,171,813		57,171,813	72,471,473
Issuance of Partnership Interests (in units)			0
Exchange of Partnership Interests (in units)			(8,098,573)
Vesting of Partnership Interests (in units)			296,002
Ownership Percentage
Ownership Percentage	25.30%	29.60%
Partnership Interests, Retirement, Increase (Decrease), Percentage			(0.70%)
Partnership Interests, Retirement, Units			(7,497,089)
Issuance of Partnership Interests (percent)			(0.10%)
Exchange of Partnership Interests (percent)			(3.60%)
Vesting of Partnership Interests (percent)			0.10%