Divestitures (Details 2) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Mar. 25, 2016	Mar. 27, 2015	Jun. 27, 2014	Mar. 25, 2016	Mar. 27, 2015
Discontinued Operations and Disposal Groups [Abstract]
Net revenue	$ 0	$ 5		$ 1	$ 10
Pre-tax loss from discontinued operations	(1)	(6)		(2)	(9)
Pre-tax gain on discontinued operations	0	0		17	1
Income tax benefit (expense) (1)	2	(10)		(10)	(10)
Income (loss) from discontinued operations, net of income taxes	$ 1	$ (16)		5	$ (18)
Tax Adjustments, Settlements, and Unusual Provisions				$ 12
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation			$ 212