Non-controlling Interests (Details) - Holdings - shares			3 Months Ended
	Oct. 30, 2022	Jan. 30, 2022	Apr. 30, 2023	Jan. 29, 2023
Partnership Interests
Partnership Interests (in units)			230,589,642	245,236,634
Issuance of Partnership Interests (in units)			93,460
Exchange of Partnership Interests (in units)			0
Vesting of Partnership Interests (in units)			259,548
Ownership Percentage
Ownership Percentage	100.00%	100.00%
Partnership Interests, Retirement, Increase (Decrease), Percentage			0.00%
Partnership Interests, Retirement, Units			(15,000,000)
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)			165,806,518	172,765,161
Issuance of Partnership Interests (in units)			93,460
Exchange of Partnership Interests (in units)			(2,325,080)
Vesting of Partnership Interests (in units)			0
Ownership Percentage
Ownership Percentage	71.90%	70.40%
Partnership Interests, Retirement, Increase (Decrease), Percentage			(0.60%)
Partnership Interests, Retirement, Units			(9,377,183)
Issuance of Partnership Interests (percent)			0.00%
Exchange of Partnership Interests (percent)			(1.00%)
Vesting of Partnership Interests (percent)			0.10%
Continuing Limited Partners
Partnership Interests
Partnership Interests (in units)			64,783,124	72,471,473
Issuance of Partnership Interests (in units)			0
Exchange of Partnership Interests (in units)			(2,325,080)
Vesting of Partnership Interests (in units)			259,548
Ownership Percentage
Ownership Percentage	28.10%	29.60%
Partnership Interests, Retirement, Increase (Decrease), Percentage			(0.60%)
Partnership Interests, Retirement, Units			(5,622,817)
Issuance of Partnership Interests (percent)			0.00%
Exchange of Partnership Interests (percent)			(1.00%)
Vesting of Partnership Interests (percent)			0.10%