Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended														3 Months Ended	9 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014 Recurring	Sep. 27, 2013 Recurring	Jun. 27, 2014 Level 1 Recurring	Sep. 27, 2013 Level 1 Recurring	Jun. 27, 2014 Level 2 Recurring	Sep. 27, 2013 Level 2 Recurring	Jun. 27, 2014 Total Recurring	Sep. 27, 2013 Total Recurring	Sep. 27, 2013 Corporate debt securities Recurring	Sep. 27, 2013 Corporate debt securities Level 1 Recurring	Sep. 27, 2013 Corporate debt securities Level 2 Recurring	Sep. 27, 2013 Corporate debt securities Total Recurring	Jun. 27, 2014 Corporate and U.S. Government debt securities	Jun. 27, 2014 Corporate and U.S. Government debt securities	Sep. 27, 2013 U.S. Government debt securities Recurring	Sep. 27, 2013 U.S. Government debt securities Level 1 Recurring	Sep. 27, 2013 U.S. Government debt securities Level 2 Recurring	Sep. 27, 2013 U.S. Government debt securities Total Recurring	Jun. 27, 2014 Foreign Exchange Contract	Sep. 27, 2013 Foreign Exchange Contract	Jun. 27, 2014 Discontinued Operations Foreign Exchange Contract	Sep. 27, 2013 Discontinued Operations Foreign Exchange Contract
Available-for-sale investments
Derivative, notional amount																					$ 423	$ 278	$ 25	$ 60
Gain (Loss) on Investments	(214)	14													1	1
Other Short-term Investments			277		277		0		277
Available-for-Sale Securities						171		72		243		0	34	34				171	38	209
Consolidated Balance Sheets Classification - Prepaid and Other Current Assets				100							11						89
Consolidated Balance Sheets Classification - Other Assets				$ 143							$ 23						$ 120