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DEFINED BENEFIT RETIREMENT PLAN (Details) £ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 30, 2023 USD ($) item $ / £ | Dec. 30, 2023 GBP (£) item | Dec. 31, 2022 USD ($) $ / £ | Dec. 25, 2021 USD ($)
Retirement Benefits [Abstract] |  |  |  |
Pension retirement benefits to qualified employees as percent of final salary per year of service | 1.67% | 1.67% |  |
Eligibility age | 65 years | 65 years |  |
Active members of defined benefit retirement income plan | item | 0 | 0 |  |
Foreign currency exchange rate used to translate the net pension liability | $ / £ | 1.273 |  | 1.209 |
Projected Benefit Obligation |  |  |  |
Beginning balance | $ 435,711 |  | $ 761,706 |
Interest cost | $ 21,555 |  | $ 12,551 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] | Interest Expense | Interest Expense | Interest Expense |
Benefits paid | $ (20,683) |  | $ (20,175) |
Actuarial (gain) loss | 17,692 |  | (248,252) |
Currency translation | 23,488 |  | (70,119) |
Ending balance | 477,763 |  | 435,711 |
Plan Assets |  |  |  |
Fair value beginning balance | 459,927 |  | 761,170 |
Employer contributions | 17,345 |  | 17,155 |
Actual return on plan assets | 10,966 |  | (228,493) |
Benefits paid | (20,683) |  | (20,175) |
Currency translation | 25,612 |  | (69,730) |
Fair value ending balance | 493,167 |  | 459,927 |
Funded status |  |  |  |
Funded status | 15,404 |  | 24,216 | $ (536)
Accumulated other comprehensive income (loss) |  |  |  |
Balance at the beginning of the period | (57,911) |  | (60,940) |
Actuarial gain (loss) | (28,071) |  | (2,915) |
Currency translation gain | (3,667) |  | 5,451 |
Prior service costs amortization | 498 |  | 493 |
Balance at the end of the period | $ (89,151) |  | $ (57,911) |
Weighted average actuarial assumptions used to determine the benefit obligation |  |  |  |
Discount rate for benefit obligations | 4.50% |  | 4.80% | 1.90%
CPI inflation | 2.25% |  | 2.35% |
RPI inflation | 3.05% |  | 3.25% |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] |  |  |  |
Interest cost | $ 21,555 |  | $ 12,551 |
Expected return on plan assets | $ (21,804) |  | $ (23,131) |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) |
Amortization of prior service cost | $ 498 |  | $ 493 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) |
Net periodic pension benefit | $ 249 |  | $ (10,087) |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) |
Weighted average actuarial assumptions used to determine expense |  |  |  |
Discount rate for benefit obligations | 4.80% | 4.80% | 1.90% |
Discount rate for interest cost | 4.90% | 4.90% | 1.80% |
Expected return on plan assets | 4.85% | 4.85% | 3.48% |
CPI Inflation | 2.35% | 2.35% | 2.70% |
RPI Inflation | 3.25% | 3.25% | 3.30% |
Limit on employer contributions per annum | $ 16,700 | £ 13,100 |  |
Administrative costs of the Plan | 1,700 | £ 1,300 |  |
Expected pension benefit payments |  |  |  |
2024 | 21,641 |  |  |
2025 | 22,278 |  |  |
2026 | 23,042 |  |  |
2027 | 23,678 |  |  |
2028 | 24,442 |  |  |
Years 2028 - 2032 | $ 133,540 |  |  |
Weighted average maturity period of corporate bond portfolio | 13 years | 13 years |  |

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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-18 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
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- Definition Indicates line item in statement of income or comprehensive income that includes amortization of prior service cost (credit) component of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
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- Definition Indicates line item in statement of income or comprehensive income that includes components of net periodic benefit cost (credit), excluding service cost component, for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
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- Definition Indicates line item in statement of income or comprehensive income that includes interest cost component of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
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- Definition Amount of defined benefit plan cost (credit), classified as other. + References No definition available. + Details
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(5) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479424/830-30-S99-1 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Represents the number of active employees as members of defined benefit retirement plan. + References No definition available. + Details
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- Definition The pretax net amount of gains and losses related to currency translation that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. + References No definition available. + Details
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- Definition Represents the age after which the qualified employees to receive retirement benefits. + References No definition available. + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit obligations of defined benefit plan. + References No definition available. + Details
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