|
Fair Value Measurements Nonrecurring Fair Value Measurements (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Dec. 28, 2014
|
Dec. 29, 2013
|
|
| Unallocated Other Income [Member] | ||
| Goodwill, Impaired [Abstract] | ||
| Goodwill impairment charge |
$ 69us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = qcom_UnallocatedOtherIncomeMember |
|
| QMT [Member] | ||
| Impaired Long-Lived Assets Held and Used [Line Items] | ||
| Long-lived assets impairment charges |
444us-gaap_ImpairmentOfLongLivedAssetsHeldForUse / us-gaap_StatementBusinessSegmentsAxis = qcom_QmtMember |
|
| QRS [Member] | ||
| Goodwill, Impaired [Abstract] | ||
| Goodwill impairment charge |
$ 16us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = qcom_QRSMember |
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|