Goodwill and Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014	Jun. 28, 2013	Sep. 27, 2013
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	$ 2,128		$ 2,128		$ 2,083
Accumulated Amortization	1,661		1,661		1,591
Gross Carrying Amount, Non-Amortizable	298		298		299
Intangible asset amortization expense and estimated aggregate amortization expense ($ in millions):
Intangible asset amortization expense	23	22	70	72
Estimated aggregate amortization expense, remainder of 2014	23		23
Estimated aggregate amortization expense, 2015	75		75
Estimated aggregate amortization expense, 2016	69		69
Estimated aggregate amortization expense, 2017	61		61
Estimated aggregate amortization expense, 2018 and thereafter	239		239
Contracts and related customer relationships
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	1,465		1,465		1,420
Accumulated Amortization	1,155		1,155		1,101
Intellectual property
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	623		623		623
Accumulated Amortization	487		487		477
Gross Carrying Amount, Non-Amortizable	222		222		223
Other
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	40		40		40
Accumulated Amortization	19		19		13
Franchise rights
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Non-Amortizable	$ 76		$ 76		$ 76