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Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 04, 2021
Jun. 28, 2020
Jul. 04, 2021
Jun. 28, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance $ 2,324,553 $ 1,550,673 $ 2,207,018 $ 1,480,158
Other comprehensive income (loss) 6,645 18,613 (18,194) 10,354
Balance 2,493,256 1,744,551 2,493,256 1,744,551
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     (15,974) 7,026
Amounts reclassified from accumulated other comprehensive income (loss), net of tax     0 0
Other comprehensive income (loss)     (15,974) 7,026
Balance 9,415 (16,488) 9,415 (16,488)
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     (1,776) 4,830
Amounts reclassified from accumulated other comprehensive income (loss), net of tax     (441) (1,499)
Other comprehensive income (loss)     (2,217) 3,331
Balance 4,737 6,811 4,737 6,811
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) (3) (3)
Other comprehensive income (loss)     (3) (3)
Balance 1,170 1,177 1,170 1,177
Accumulated Other Comprehensive Income (Loss)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance 8,677 (27,113) 33,516 (18,854)
Other comprehensive (loss) income before reclassifications, net of tax     (17,750) 11,856
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 1 (985) [1] (444) [1] (1,502) [1]
Other comprehensive income (loss) 6,645 18,613 (18,194) 10,354
Balance $ 15,322 $ (8,500) $ 15,322 $ (8,500)
[1] The amortization of prior service credit is included in the computation of net periodic postretirement benefit cost. See Note Q: “Retirement Plans.”