Investments - Combined Financial Information for Equity Investments (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Results of Operations:
Revenues	$ 6,561	$ 6,573	$ 6,231
Net Income	1,912	2,003	1,470
Balance Sheet
Current assets	3,676	2,640	2,662
Non-current assets	6,429	6,294	5,495
Equity Method Investment, Summarized Financial Information, Assets, Total	10,105	8,934	8,157
Current liabilities	1,614	1,504	1,357
Non-current liabilities	4,128	3,298	3,368
Shareholders' equity	4,363	4,132	3,432
Equity Method Investment, Summarized Financial Information, Liabilities and Equity, Total	$ 10,105	$ 8,934	$ 8,157