Financial Instruments - Investments - Unrealized Gains and Losses Related to Equity Securities (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 28, 2026 |
Jun. 29, 2025 |
Jun. 28, 2026 |
Jun. 29, 2025 |
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| Fair Value Disclosures [Abstract] | ||||||
| Net (gains)/losses recognized during the period on equity securities | [1] | $ 37 | $ (75) | $ 46 | $ 295 | |
| Less: Net (gains)/losses recognized during the period on equity securities sold during the period | (16) | (10) | (22) | (934) | ||
| Net unrealized (gains)/losses during the reporting period on equity securities still held at the reporting date | $ 53 | $ (65) | $ 68 | $ 1,230 | ||
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