Acquired Intangible Assets - Components of Gross and Net Intangible Asset Balances (Detail) - USD ($) $ in Millions |
Sep. 24, 2016 |
Sep. 26, 2015 |
|---|---|---|
| Goodwill and Intangible Assets Disclosure [Abstract] | ||
| Definite-lived and amortizable acquired intangible assets, gross carrying amount | $ 8,912 | $ 8,125 |
| Definite-lived and amortizable acquired intangible assets, accumulated amortization | (5,806) | (4,332) |
| Definite-lived and amortizable acquired intangible assets, net carrying amount | 3,106 | 3,793 |
| Indefinite-lived and non-amortizable acquired intangible assets | 100 | 100 |
| Total acquired intangible assets, gross carrying amount | 9,012 | 8,225 |
| Total acquired intangible assets, net carrying amount | $ 3,206 | $ 3,893 |