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Pension, Postretirement and Postemployment Benefits, End of Fair Value Measurement (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 30, 2018 | Dec. 31, 2017 | Dec. 25, 2016
Equity - Other [Member] |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |  |
Investments for which the fair value is measured using net asset value per share | 300 |  |
Cash Equivalents [Member] |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |  |
Investments for which the fair value is measured using net asset value per share | 105,600 |  |
International Plans [Member] |  |  |
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract] |  |  |
2019 | $ 1,774 |  |
2020 | 1,958 |  |
2021 | 2,072 |  |
2022 | 2,279 |  |
2023 | 2,531 |  |
2024-2028 | 15,337 |  |
Projected benefit obligation | 98,476 | $ 127,012 |
Fair value of plan assets | 78,184 | $ 100,766 |
Expected amortization of unrecognized transition obligation in next fiscal year | $ 2 |  |
Pension [Member] |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |  |
Shared long-term total return goal on plan assets | 4.75% | 6.25% | 6.75%
Components of net periodic cost [Abstract] |  |  |
Service cost | $ 1,300 | $ 1,290 | $ 2,100
Interest cost | 13,358 | 15,303 | 16,106
Expected return on assets | (18,475) | (19,534) | (17,013)
Amortization of prior service cost | 0 | 0 | 0
Amortization of actuarial loss | 10,995 | 9,082 | 7,361
Curtailment/settlement losses | 0 | 0 | 0
Net periodic benefit cost | $ 7,178 | $ 6,141 | $ 8,554
Assumptions used to determine net periodic benefit cost of pension plan and postretirement plan [Abstract] |  |  |
Weighted average discount rate | 3.71% | 4.22% | 4.58%
Long-term rate of return on plan assets | 4.75% | 6.25% | 6.75%
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract] |  |  |
2019 | $ 368,278 |  |
2020 | 2,465 |  |
2021 | 2,434 |  |
2022 | 2,410 |  |
2023 | 2,420 |  |
2024-2028 | 11,634 |  |
Postretirement [Member] |  |  |
Components of net periodic cost [Abstract] |  |  |
Service cost | 756 | $ 691 | $ 532
Interest cost | 1,171 | 1,179 | 1,175
Amortization of actuarial loss | (165) | 0 | 0
Curtailment/settlement losses | 0 | 0 | 0
Net periodic benefit cost | $ 2,092 | $ 1,870 | $ 1,707
Assumptions used to determine net periodic benefit cost of pension plan and postretirement plan [Abstract] |  |  |
Weighted average discount rate | 3.74% | 4.26% | 4.64%
Health care cost trend rate assumed for next year | 6.50% | 7.00% | 7.00%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate) | 5.00% | 5.00% | 5.00%
Year that the rate reaches the ultimate trend rate | 2024 | 2021 | 2021
Effect of one percentage point increase in health care cost trend rate on accumulated postretirement benefit obligation and aggregate of benefits earned and interest cost | 0.70% |  |
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract] |  |  |
2019 | $ 1,641 |  |
2020 | 1,594 |  |
2021 | 1,548 |  |
2022 | 1,510 |  |
2023 | 1,472 |  |
2024-2028 | $ 7,031 |  |

X
- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation and the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + References No definition available. + Details
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- Definition Investments for which the fair value is measured using net asset value per share, not included in te fair value heirerarchy + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(5) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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- Definition Amount of transition asset (obligation) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(6) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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