Investments (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 26, 2020 |
Jun. 28, 2019 |
Jun. 26, 2020 |
Jun. 28, 2019 |
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| Schedule of Equity and Debt Securities [Line Items] | ||||
| Equity Securities, FV-NI, Unrealized Loss | $ 14 | $ 123 | ||
| Equity Securities, FV-NI, Unrealized Gain | $ 229 | $ 121 | ||
| X | ||||||||||
- Definition Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of unrealized loss on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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