Composition of Certain Financial Statement Items Other Income, Costs and Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 28, 2015	Mar. 29, 2015	Jun. 26, 2016	Jun. 28, 2015
Gain on sale of wireless spectrum			$ 380	$ 0
Proceeds from sale of wireless spectrum			232	0
Deferred payments			275
Restructuring and restructuring-related charges			158
Resolution of governmental investigation, Amount		$ 975		975
Goodwill impairment charges	$ 151			255
Impairment of Intangible Assets	11		44	11
Gains on sales of certain property plant and equipment	$ 44			$ 60
Other Operating Income (Expense) [Member]
Gain (Loss) on Disposition of Business			$ 48
Minimum [Member]
Deferred payments, Due date			Jan. 01, 2020
Maximum [Member]
Deferred payments, Due date			Dec. 31, 2023