Investments (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 25, 2020 |
Sep. 27, 2019 |
Sep. 25, 2020 |
Sep. 27, 2019 |
|
| Schedule of Equity and Debt Securities [Line Items] | ||||
| Equity Securities, FV-NI, Unrealized Loss | $ 113 | |||
| Equity Securities, FV-NI, Unrealized Gain | $ 17 | $ 29 | $ 147 | |
| 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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