1.0.0.3falseCONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (USD $)In Millions, except Per Share datafalse1$falsefalseu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0false2$falsefalseu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli031us-gaap_RevenuesAbstractus-gaaptruenadurationstringNo definition available.falsefalsefalsefalsefalsetruefalsefalsefalse1falsefalse00falsefalse2falsefalse00falsefalseNo definition available.false42qcom_EquipmentAndServicesqcomfalsecreditdurationmonetaryAggregate revenue during the period from equipment and services rendered in the normal course of business, after deducting...falsefalsefalsefalsefalsefalsefalsefalsefalse1truetrue16630000001663falsefalse2truetrue14230000001423falsefalseAggregate revenue during the period from equipment and services rendered in the normal course of business, after deducting allowances and discounts and the aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.No authoritative reference available.false52qcom_LicensingAndRoyaltyFeesqcomfalsecreditdurationmonetaryRevenue earned during the period relating to consideration received from another party for the right to use, but not own,...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue10070000001007falsefalse2falsetrue10940000001094falsefalseRevenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing
process, software or trademark. Licensing fees are generally, but not always,
fixed as to amount and not dependent upon the revenue generated by the licensing
party. An entity may receive licensing fees for licenses that also generate
royalty payments to the entity and revenue earned during the period from the
leasing or otherwise lending to a third party the entity's rights or title
to certain property. Royalty revenue is derived from a percentage or stated
amount of sales proceeds or revenue generated by the third party using the
entity's property. Examples of property from which royalties may be derived
include patents and oil and mineral rights.No authoritative reference available.false62us-gaap_Revenuesus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue26700000002670falsefalse2falsetrue25170000002517falsefalseNo definition available.No authoritative reference available.true71qcom_OperatingExpenseTotalAbstractqcomfalsenadurationstringGenerally recurring costs associated
with normal operations includes cost of sales or services, research and...falsefalsefalsefalsefalsetruefalsefalsefalse1falsefalse00falsefalse2falsefalse00falsefalseGenerally recurring costs associated
with normal operations includes cost of sales or services, research and development
expense and selling, general and administrative expense.false82us-gaap_CostOfRevenueus-gaaptruedebitdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue816000000816falsefalse2falsetrue755000000755falsefalseNo definition available.No authoritative reference available.false92us-gaap_ResearchAndDevelopmentExpenseus-gaaptruedebitdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue596000000596falsefalse2falsetrue604000000604falsefalseNo definition available.No authoritative reference available.false102us-gaap_SellingGeneralAndAdministrativeExpenseus-gaaptruedebitdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue379000000379falsefalse2falsetrue413000000413falsefalseNo definition available.No authoritative reference available.false112qcom_TotalOperatingExpensesqcomfalsedebitdurationmonetaryGenerally recurring costs associated with normal operations includes cost of sales or services, research and development...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue17910000001791falsefalse2falsetrue17720000001772falsefalseGenerally recurring costs associated with normal operations includes cost of sales or services, research and development expense and selling, general and administrative expense.No authoritative reference available.true121us-gaap_OperatingIncomeLossus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue879000000879falsefalse2falsetrue745000000745falsefalseNo definition available.No authoritative reference available.true131qcom_InvestmentIncomeNetIncludingqcomfalsecreditdurationmonetaryThis item represents investment income derived from investments in debt and equity securities consisting of interest income...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue173000000173falsefalse2falsetrue-294000000-294falsefalseThis item represents investment income derived from investments in debt and equity securities consisting of interest income earned from investments in debt securities and on cash and cash equivalents, dividend income from investments in equity securities, income or expense derived from the amortization of investment related discounts or premiums, respectively, net of related investment expenses, realized gains or losses on the sale or holding of investments in debt and equity securities required to be included in earnings for the period, other than temporary losses related to investments in debt and equity securities, interest expense, gains or losses on derivative instruments, and equity in earnings or losses of investees.No authoritative reference available.false141qcom_IncomeBeforeIncomeTaxesqcomfalsecreditdurationmonetarySum of operating income and nonoperating income (expense) before income taxes incuding income (loss) from equity method...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue10520000001052falsefalse2falsetrue451000000451falsefalseSum of operating income and nonoperating income (expense) before income taxes incuding income (loss) from equity method investments.No authoritative reference available.true151us-gaap_IncomeTaxExpenseBenefitus-gaaptruedebitdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue-211000000-211falsefalse2falsetrue-110000000-110falsefalseNo definition available.No authoritative reference available.false161us-gaap_NetIncomeLossus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1truetrue841000000841falsefalse2truetrue341000000341falsefalseNo definition available.No authoritative reference available.false171us-gaap_EarningsPerShareBasicus-gaaptruenadurationdecimalNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetrue1truetrue0.50.5falsefalse2truetrue0.210.21falsefalseNo definition available.No authoritative reference available.false181us-gaap_EarningsPerShareDilutedus-gaaptruenadurationdecimalNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetrue1truetrue0.50.5falsefalse2truetrue0.20.2falsefalseNo definition available.No authoritative reference available.false191qcom_SharesUsedInPerShareCalculationsqcomfalsenadurationstringNo definition available.falsefalsefalsefalsefalsetruefalsefalsefalse1falsefalse00falsefalse2falsefalse00falsefalseNo definition available.false202us-gaap_WeightedAverageNumberOfSharesOutstandingBasicus-gaaptruenadurationsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue16720000001672falsefalse2falsetrue16530000001653falsefalseNo definition available.No authoritative reference available.false212us-gaap_WeightedAverageNumberOfDilutedSharesOutstandingus-gaaptruenadurationsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue16910000001691falsefalse2falsetrue16670000001667falsefalseNo definition available.No authoritative reference available.false221us-gaap_CommonStockDividendsPerShareDeclaredus-gaaptruenadurationdecimalNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetrue1truetrue0.170.17falsefalse2truetrue0.160.16falsefalseNo definition available.No authoritative reference available.falsefalse220falseMillionsMillionsHundredsfalsetrue