Goodwill and Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 24, 2010
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	$ 2,196	$ 2,043
Accumulated Amortization	1,723	1,592
Gross Carrying Amount, Non-Amortizable	307	294
Intangible asset amortization expense and estimated aggregate amortization expense ($ in millions):
Intangible asset amortization expense	102	98	95
Estimated aggregate amortization expense, 2013	98
Estimated aggregate amortization expense, 2014	80
Estimated aggregate amortization expense, 2015	67
Estimated aggregate amortization expense, 2016	62
Estimated aggregate amortization expense, 2017 and thereafter	166
Contracts and related customer relationships
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	1,608	1,511
Accumulated Amortization	1,246	1,136
Intellectual Property
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	552	516
Accumulated Amortization	468	449
Gross Carrying Amount, Non-Amortizable	224	211
Other Intangible Assets
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	36	16
Accumulated Amortization	9	7
Gross Carrying Amount, Non-Amortizable	6	6
Franchise rights
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Non-Amortizable	$ 77	$ 77