Composition of Certain Financial Statement Items Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 25, 2011	Sep. 29, 2013
Goodwill and Other Intangible Assets [Line Items]
Goodwill	$ 3,917		$ 3,976
QCT [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill	2,816		2,875
QTL [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill	707		706
QWI [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill	128		107
Nonreportable segments [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill	266		288
QMT [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill			133
Long-lived asset groups, carrying value			707
QRS [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill			17
Goodwill and long-lived asset impairment charges	$ 23	$ 114