Composition of Certain Financial Statement Items Investment and Other Income, Net (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Sep. 29, 2019 |
Sep. 30, 2018 |
Sep. 24, 2017 |
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| Net Investment Income [Line Items] | |||
| Interest and dividend income | $ 316 | $ 625 | $ 619 |
| Net gains on marketable securities | 288 | 41 | 456 |
| Net gains on other investments | 68 | 83 | 74 |
| Impairment losses on marketable securities and other investments | (135) | (75) | (177) |
| Net (losses) gains on derivative instruments | (14) | (27) | 32 |
| Equity in net losses of investees | (93) | (145) | (74) |
| Net gains (losses) on foreign currency transactions | 11 | 37 | (30) |
| Investment and other income, net | 441 | 539 | 900 |
| Marketable Securities, Realized Gain (Loss) | $ 0 | $ 0 | |
| Realized Gain [Member] | |||
| Net Investment Income [Line Items] | |||
| Marketable Securities, Realized Gain (Loss) | 361 | ||
| Realized Loss [Member] | |||
| Net Investment Income [Line Items] | |||
| Marketable Securities, Realized Gain (Loss) | $ (98) | ||
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of gain (loss) included in earnings for investments classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate amount of income from investments (for example, dividends) not considered a component of the entity's core operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI). No definition available.
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- Definition Amount of realized gain (loss) on investment in marketable security, excluding other-than-temporary impairment (OTTI). No definition available.
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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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