Segment Information and Geographic Data - Long-Lived Assets (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 27,010	$ 23,784
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	16,364	12,022
CHINA
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	7,807	8,722
Other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 2,839	$ 3,040