Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014	Sep. 27, 2014
Income Tax Disclosure [Abstract]
Effective tax rate for continuing operations	33.60%	16.80%	32.80%	30.40%
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations		12.80%	2.30%	3.80%
Unrecognized tax benefits	$ 227		$ 227		$ 272
Unrecognized tax benefits that would impact effective tax rate	198		198		241
Unrecognized tax benefits, income tax penalties and interest accrued	51		51		$ 54
Unrecognized tax benefits, reductions that could result from tax audit resolutions	$ 22		$ 22