Pension - Projected benefit obligation and projected fair value (Details) - item	3 Months Ended	12 Months Ended
	Aug. 02, 2025	Apr. 30, 2025	Jan. 31, 2026	Nov. 01, 2025
Pension
Number of pension commitments			3
Pension Plan
Pension
Discount rate		3.60%		3.60%
In-payment benefits		2.50%		2.50%
Expected return on plan assets	2.90%	2.90%