Financial Instruments (Tables)

3 Months Ended

Dec. 26, 2014

Financial Instruments, Owned, at Fair Value [Abstract]

Assets measured at fair value on a recurring basis

The following table presents the Company's hierarchy for its assets measured at fair value on a recurring basis as of December 26, 2014 and September 26, 2014 ($ in millions):

							Consolidated Balance Sheet Classification
	As of December 26, 2014						Prepaids and Other Current Assets
Investment Assets:	Level 1		Level 2		Total
Exchange traded equity funds	$	65	$	—	$	65	$	65
	$	65	$	—	$	65	$	65

							Consolidated Balance Sheet Classification
	As of September 26, 2014						Prepaids and Other Current Assets
Investment Assets:	Level 1		Level 2		Total
Time deposits	$	275	$	—	$	275	$	275
Exchange traded equity funds	62		—		62		62
	$	337	$	—	$	337	$	337