Financial Instruments - Investments - Unrealized Gains and Losses Related to Equity Securities (Details) - USD ($) $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Mar. 29, 2026 |
Mar. 30, 2025 |
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| Fair Value Disclosures [Abstract] | ||||
| Net (gains)/losses recognized during the period on equity securities | [1] | $ 9 | $ 370 | |
| Less: Net (gains)/losses recognized during the period on equity securities sold during the period | (6) | (924) | ||
| Net unrealized (gains)/losses during the reporting period on equity securities still held at the reporting date | $ 15 | $ 1,295 | ||
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