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Retirement plans (Tables) | 6 Months Ended
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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) |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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