Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Investments (Details) - USD ($) $ in Millions	3 Months Ended
Investments (Details) - USD ($) $ in Millions	Apr. 03, 2021	Mar. 28, 2020	Dec. 31, 2020
Investments
Total trading short-term investments	$ 1,384		$ 1,465
Change in unrealized gains (losses) on trading securities	65	$ (236)
Denominated in foreign currencies
Investments
Total trading short-term investments	42		29
Domestic equity securities
Investments
Fair Value	697		702
Domestic debt securities
Investments
Fair Value	392		496
Foreign equity securities
Investments
Fair Value	149		133
Foreign debt securities
Investments
Fair Value	106		68
Money market funds held in trading accounts
Investments
Fair Value	18		47
Other trading securities
Investments
Fair Value	$ 22		$ 19