Composition of Certain Financial Statement Items Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Jun. 29, 2014	Dec. 29, 2013	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Goodwill and Other Intangible Assets [Line Items]
Goodwill			$ 4,488	$ 3,976
Goodwill and long-lived asset impairment charges			260
Asset Impairment Charges			642	192	84
QCT [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill			3,467	2,875
QTL [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill			712	706
Nonreportable segments [Member]
Goodwill and Other Intangible Assets [Line Items]
Goodwill			309	395
QMT [Member]
Goodwill and Other Intangible Assets [Line Items]
Property, plant and equipment classified as held for sale and included in other assets			116
Goodwill			35
Impairment of Long-Lived Assets Held-for-use	64	444
Goodwill and long-lived asset impairment charges	100
Asset Impairment Charges			$ 607	$ 158	$ 54