Change in Accounting Estimate (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Oct. 01, 2016	Oct. 01, 2016	Dec. 26, 2015
Service Life [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate Impact, Operating Income	$ 425	$ 925
Change in Accounting Estimate Impact, Net Income	$ 300	$ 650
Change in Accounting Estimate Impact, Earnings Per Share	$ 0.06	$ 0.13
Machinery and Equipment [Member]
Change in Accounting Estimate [Line Items]
Property, Plant and Equipment, Useful Life		5 years	4 years