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Investments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Investments (Details) - USD ($) $ in Millions	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Dec. 31, 2023
Investments
Total trading short-term investments	$ 1,072		$ 1,072		$ 973
Unrealized gains on trading securities	5	$ 17	18	$ 48
Long term investments	133		133		207
Denominated in foreign currencies
Investments
Total trading short-term investments	37		37		18
Business Development Company
Investments
Long term investments					68
Domestic equity securities
Investments
Fair Value	211		211		143
Foreign equity securities
Investments
Fair Value	101		101		96
Domestic debt securities
Investments
Fair Value	616		616		593
Foreign debt securities
Investments
Fair Value	127		127		120
Money market funds held in trading accounts
Investments
Fair Value	11		11		17
Other trading securities
Investments
Fair Value	$ 6		$ 6		$ 4