Acquisitions Business Acquisition, Reportable Segments (Details) (USD $) In Millions	Sep. 25, 2011
Business Acquisition [Line Items]
Business acquisition purchase price allocation goodwill amount other than Atheros	$ 276
QCT [Member]
Business Acquisition [Line Items]
Business acquisition purchase price allocation goodwill amount other than Atheros	227
QWI [Member]
Business Acquisition [Line Items]
Business acquisition purchase price allocation goodwill amount other than Atheros	35
QTL [Member]
Business Acquisition [Line Items]
Business acquisition purchase price allocation goodwill amount other than Atheros	5
QSI [Member]
Business Acquisition [Line Items]
Business acquisition purchase price allocation goodwill amount other than Atheros	1
Other Nonreportable Segments [Member]
Business Acquisition [Line Items]
Business acquisition purchase price allocation goodwill amount other than Atheros	$ 8