Divestitures (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Mar. 29, 2013	Mar. 30, 2012
Net revenue, pre-tax income, pre-tax income on sale, pre-tax separation charges, income tax expense and income, net of tax from discontinued operations:
Net revenue		$ 1,804		$ 3,521
Pre-tax income		317		622
Pre-tax separation gain (charges), net (See Note 2)	(2)	(63)	2	(94)
Pre-tax gain on sale of discontinued operations		5		5
Income tax expense		(70)		(120)
(Loss) income from discontinued operations, net of income taxes	(2)	189	2	413
Net loss on divestiture	$ (9)	$ (3)	$ (6)	$ (3)