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v3.21.1

Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 04, 2021 | Mar. 29, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance |  | $ 2,207,018 | $ 1,480,158
Other comprehensive loss |  | (24,839) | (8,259)
Balance |  | 2,324,553 | 1,550,673
Foreign Currency Translation Reclassification Adjustments |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance |  | 25,389 | (23,514)
Other comprehensive (loss) income before reclassifications, net of tax |  | (21,123) | (8,779)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax |  | 0 | 0
Other comprehensive loss |  | (21,123) | (8,779)
Balance |  | 4,266 | (32,293)
Unrealized Gains (Losses) on Marketable Securities |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance |  | 6,954 | 3,480
Other comprehensive (loss) income before reclassifications, net of tax |  | (3,270) | 1,037
Amounts reclassified from accumulated other comprehensive income (loss), net of tax |  | (444) | (515)
Other comprehensive loss |  | (3,714) | 522
Balance |  | 3,240 | 4,002
Retirement Plans Prior Service Credit |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance |  | 1,173 | 1,180
Other comprehensive (loss) income before reclassifications, net of tax |  | 0 | 0
Amounts reclassified from accumulated other comprehensive income (loss), net of tax | [1] | (2) | (2)
Other comprehensive loss |  | (2) | (2)
Balance |  | 1,171 | 1,178
Accumulated Other Comprehensive Income (Loss) |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance |  | 33,516 | (18,854)
Other comprehensive (loss) income before reclassifications, net of tax |  | (24,393) | (7,742)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax |  | (446) | (517)
Other comprehensive loss |  | (24,839) | (8,259)
Balance |  | $ 8,677 | $ (27,113)
[1] | The amortization of prior service credit is included in the computation of net periodic postretirement benefit cost. See Note P: “Retirement Plans.”

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