Retirement plans (Tables)

6 Months Ended

Jul. 29, 2023

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The components of net periodic benefit cost for the Pension Scheme are as follows:

	13 weeks ended				26 weeks ended
(in millions)	July 29, 2023		July 30, 2022		July 29, 2023		July 30, 2022
Components of net periodic benefit cost:
Interest cost	$	—	$	—	$	—	$	(0.9)
Expected return on plan assets	(0.9)		(0.3)		(0.9)		0.3
Amortization of unrecognized actuarial losses	—		(1.1)		—		(2.0)
Amortization of unrecognized net prior service costs	—		(0.1)		—		(0.2)
Pension settlement loss	—		(0.9)		(0.2)		(132.8)
Total net periodic benefit cost	$	(0.9)	$	(2.4)	$	(1.1)	$	(135.6)