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