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Investments (Details) - USD ($) $ in Millions	3 Months Ended
Investments (Details) - USD ($) $ in Millions	Apr. 02, 2022	Apr. 03, 2021	Dec. 31, 2021
Investments
Total trading short-term investments	$ 1,295		$ 1,416
Change in unrealized gains (losses) on trading securities	(42)	$ 65
Long term investments	160		156
Denominated in foreign currencies
Investments
Total trading short-term investments	37		46
Domestic equity securities
Investments
Fair Value	460		472
Domestic debt securities
Investments
Fair Value	452		542
Foreign equity securities
Investments
Fair Value	183		193
Foreign debt securities
Investments
Fair Value	138		133
Money market funds held in trading accounts
Investments
Fair Value	48		59
Other trading investments.
Investments
Fair Value	$ 14		$ 17