Equity and Comprehensive Income (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 26, 2014	Dec. 27, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (31)	$ 236
Components of Accumulated Other Comprehensive Income (Loss)
Balance as of September 26, 2014	(1,225)
Total other comprehensive loss, net of tax	(193)	(34)
Balance as of December 26, 2014	(1,418)
Accumulated Translation Adjustment [Member]
Components of Accumulated Other Comprehensive Income (Loss)
Balance as of September 26, 2014	(693)
Total other comprehensive loss, net of tax	(198)
Balance as of December 26, 2014	(891)
Retirement Plans
Components of Accumulated Other Comprehensive Income (Loss)
Balance as of September 26, 2014	(532)
Total other comprehensive loss, net of tax	5
Balance as of December 26, 2014	(527)
Accumulated Other Comprehensive Loss
Components of Accumulated Other Comprehensive Income (Loss)
Balance as of September 26, 2014	(1,225)
Total other comprehensive loss, net of tax	(193)	(34)
Balance as of December 26, 2014	$ (1,418)