Other Income (Schedule of Interest Income and Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 28, 2019	Dec. 29, 2018
Nonoperating Income (Expense) [Abstract]
Interest income	$ 28,901	$ 38,227	$ 34,211
Interest expense	(29,080)	(14,469)	(7,987)
Gain on sale of equity investment	75,834	15,509	0
Unrealized gain on equity investment	0	14,112	0
Other	1,251	464	(158)
Other income, net	$ 76,906	$ 53,843	$ 26,066

Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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Amount of income (expense) related to nonoperating activities, classified as other.

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