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Acquired Intangible Assets (Tables) | 3 Months Ended
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Dec. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Components of Acquired Intangible Asset Balances | The following table summarizes the components of acquired intangible asset balances as of December 30, 2017 and September 30, 2017 (in millions):
| December 30, 2017 |  | September 30, 2017
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Definite-lived and amortizable acquired intangible assets | $ | 7,540 |  |  | $ | (5,491 | ) |  | $ | 2,049 |  |  | $ | 7,507 |  |  | $ | (5,309 | ) |  | $ | 2,198 |
Indefinite-lived and non-amortizable acquired intangible assets | 100 |  |  | — |  |  | 100 |  |  | 100 |  |  | — |  |  | 100 |
Total acquired intangible assets | $ | 7,640 |  |  | $ | (5,491 | ) |  | $ | 2,149 |  |  | $ | 7,607 |  |  | $ | (5,309 | ) |  | $ | 2,298 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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