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Accumulated Other Comprehensive Loss - Before and After Tax Amounts for Comprehensive Income (Loss) Components (Details) - USD ($) $ in Thousands | 3 Months Ended
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Apr. 04, 2021 | Mar. 29, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive loss | $ (26,198) | $ (93,987)
Foreign Currency Items |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive income/(loss) before tax | (32,021) | (85,994)
Other comprehensive income/(loss), tax | 0 | (7,581)
Other comprehensive loss | (32,021) | (93,575)
Defined benefit pension items |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive (loss)/income before reclassifications before tax | 151 | 264
Other comprehensive (loss)/income before reclassifications, tax | (36) | (67)
Other comprehensive (loss)/income before reclassifications, net of tax | 115 | 197
Other comprehensive income/(loss) before tax | 7,052 | 7,748
Other comprehensive income/(loss), tax | (1,667) | (1,968)
Other comprehensive loss | 5,385 | 5,780
Defined benefit pension items | Net Income |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Amounts reclassified from accumulated other comprehensive income/(loss) before tax | 6,901 | 7,484
Amounts reclassified from accumulated other comprehensive income/(loss), tax | (1,631) | (1,901)
Amounts reclassified from accumulated other comprehensive income/(loss) net of tax | 5,270 | 5,583
Cash Flow Hedges |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive (loss)/income before reclassifications before tax | 1,338 | (7,333)
Other comprehensive (loss)/income before reclassifications, tax | (340) | 1,713
Other comprehensive (loss)/income before reclassifications, net of tax | 998 | (5,620)
Other comprehensive income/(loss) before tax | 1,284 | (5,943)
Other comprehensive income/(loss), tax | (326) | 1,388
Other comprehensive loss | 958 | (4,555)
Cash Flow Hedges | Fixed Assets |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Amounts reclassified from accumulated other comprehensive income/(loss) before tax | (13) | 0
Amounts reclassified from accumulated other comprehensive income/(loss), tax | 3 | 0
Amounts reclassified from accumulated other comprehensive income/(loss) net of tax | (10) | 0
Cash Flow Hedges | Net Income |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Amounts reclassified from accumulated other comprehensive income/(loss) before tax | (41) | 1,390
Amounts reclassified from accumulated other comprehensive income/(loss), tax | 11 | (325)
Amounts reclassified from accumulated other comprehensive income/(loss) net of tax | (30) | 1,065
Accumulated Other Comprehensive Loss |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive income/(loss) before tax | (23,685) | (84,189)
Other comprehensive income/(loss), tax | (1,993) | (8,161)
Other comprehensive loss | $ (25,678) | $ (92,350)

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