Name:	qcom_NetShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtBeginningOfFiscalYear
Namespace Prefix:	qcom_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The number of shares reserved for issuance under stock option agreements assumed as a result of acquisitions.

No definition available.

Name:	qcom_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumed
Namespace Prefix:	qcom_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Represents total share-based awards granted in a fiscal year as a percentage of the total number of stock outstanding at the end of each respective fiscal year.

No definition available.

Name:	qcom_TotalShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtEndOfFiscalYear
Namespace Prefix:	qcom_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Aggregate number of common shares reserved for future issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Number of additional shares authorized for issuance under an established share-based compensation plan.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901