Investments, Available-for-Sale Debt Investments (Detail) - USD ($) $ in Millions |
Sep. 26, 2020 |
Dec. 28, 2019 |
|---|---|---|
| Debt Securities, Available-for-sale [Line Items] | ||
| Adjusted Cost | $ 7,112 | $ 6,481 |
| Gross Unrealized Gains | 124 | 63 |
| Gross Unrealized Losses | 0 | (1) |
| Fair Value | 7,236 | 6,543 |
| Due in 1 year or less | 3,504 | |
| Due in 1–2 years | 1,450 | |
| Due in 2–5 years | 1,270 | |
| Due after 5 years | 0 | |
| Instruments not due at a single maturity date | 1,012 | |
| Corporate Debt Securities [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Adjusted Cost | 2,077 | 2,914 |
| Gross Unrealized Gains | 92 | 44 |
| Gross Unrealized Losses | 0 | 0 |
| Fair Value | 2,169 | 2,958 |
| Fixed Income Securities [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Adjusted Cost | 3,431 | 3,007 |
| Gross Unrealized Gains | 20 | 15 |
| Gross Unrealized Losses | 0 | (1) |
| Fair Value | 3,451 | 3,021 |
| Government Debt [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Adjusted Cost | 1,604 | 560 |
| Gross Unrealized Gains | 12 | 4 |
| Gross Unrealized Losses | 0 | 0 |
| Fair Value | $ 1,616 | $ 564 |
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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). No definition available.
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), without single maturity date and not allocated over maturity grouping. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- 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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