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Pension, Postretirement and Postemployment Benefits - Summary of Changes in Projected Benefit Obligation (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 29, 2019 | Dec. 30, 2018 | Dec. 31, 2017 | Dec. 29, 2019 | Dec. 30, 2018
Pension |  |  |  |  |
Change in Projected Benefit Obligation |  |  |  |  |
Service cost | $ 1,168 | $ 1,300 | $ 1,290 |  |
Interest cost | 6,624 | 13,358 | 15,303 |  |
Pension | United States |  |  |  |  |
Change in Projected Benefit Obligation |  |  |  |  |
Projected benefit obligation — beginning | 395,718 | 393,367 |  |  |
Service cost | 1,168 | 1,300 |  |  |
Interest cost | 6,624 | 13,358 |  |  |
Amendment | 0 | (78) |  |  |
Actuarial (gain) loss | (8,092) | 13,010 |  |  |
Benefits paid | (13,271) | (22,718) |  |  |
Expenses paid | 3,172 | 2,521 |  |  |
Curtailment | 0 | 0 |  |  |
Settlements paid | (348,004) | 0 |  |  |
Projected benefit obligation — ending | 30,971 | 395,718 | 393,367 |  |
Accumulated benefit obligation — ending | 30,971 | 395,718 |  |  |
Change in Plan Assets |  |  |  |  |
Fair value of plan assets — beginning | 357,224 | 382,989 |  |  |
Actual return on plan assets | 23,147 | (3,328) |  |  |
Employer contribution | 4,311 | 2,802 |  |  |
Benefits paid | (13,271) | (22,718) |  |  |
Expenses paid | (3,172) | (2,521) |  |  |
Settlement of U.S. defined benefit plan | (348,004) | 0 |  |  |
Transfers | (20,235) | 0 |  |  |
Fair value of plan assets — ending | 0 | 357,224 | 382,989 |  |
Reconciliation of Funded Status |  |  |  |  |
Projected benefit obligation | (30,971) | (395,718) | (393,367) | $ (30,971) | $ (395,718)
Fair value of plan assets | 357,224 | 357,224 | 382,989 | 0 | 357,224
Funded status |  |  |  | (30,971) | (38,494)
Unrecognized net loss |  |  |  | 13,054 | 155,829
Net amount |  |  |  | (17,917) | 117,335
Accrued liabilities |  |  |  | (2,484) | (8,946)
Other liabilities |  |  |  | (28,487) | (29,548)
Accumulated other comprehensive (earnings) loss |  |  |  | 13,054 | 155,829
Net amount |  |  |  | (17,917) | 117,335
Postretirement |  |  |  |  |
Change in Projected Benefit Obligation |  |  |  |  |
Service cost | 888 | 756 | 691 |  |
Interest cost | 1,267 | 1,171 | 1,179 |  |
Postretirement | United States |  |  |  |  |
Change in Projected Benefit Obligation |  |  |  |  |
Projected benefit obligation — beginning | 30,081 | 32,153 |  |  |
Service cost | 888 | 756 |  |  |
Interest cost | 1,267 | 1,171 |  |  |
Amendment | 0 | 0 |  |  |
Actuarial (gain) loss | 6,350 | (2,339) |  |  |
Benefits paid | (1,641) | (1,660) |  |  |
Expenses paid | 0 | 0 |  |  |
Curtailment | (9,502) | 0 |  |  |
Settlements paid | 0 | 0 |  |  |
Projected benefit obligation — ending | 27,443 | 30,081 | 32,153 |  |
Accumulated benefit obligation — ending | 27,443 | 30,081 |  |  |
Change in Plan Assets |  |  |  |  |
Fair value of plan assets — beginning | 0 | 0 |  |  |
Actual return on plan assets | 0 | 0 |  |  |
Employer contribution | 0 | 0 |  |  |
Benefits paid | 0 | 0 |  |  |
Expenses paid | 0 | 0 |  |  |
Settlement of U.S. defined benefit plan | 0 | 0 |  |  |
Transfers | 0 | 0 |  |  |
Fair value of plan assets — ending | 0 | 0 | 0 |  |
Reconciliation of Funded Status |  |  |  |  |
Projected benefit obligation | (27,443) | (32,153) | (32,153) | (27,443) | (30,081)
Fair value of plan assets | $ 0 | $ 0 | $ 0 | 0 | 0
Funded status |  |  |  | (27,443) | (30,081)
Unrecognized net loss |  |  |  | 177 | 3,350
Net amount |  |  |  | (27,266) | (26,731)
Accrued liabilities |  |  |  | (1,767) | (1,607)
Other liabilities |  |  |  | (25,676) | (28,474)
Accumulated other comprehensive (earnings) loss |  |  |  | 177 | 3,350
Net amount |  |  |  | $ (27,266) | $ (26,731)

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