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Basis of Presentation Share-Based Compensation Expense (Details) (USD $)
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3 Months Ended | 6 Months Ended | ||
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Mar. 29, 2015
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Mar. 30, 2014
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Mar. 29, 2015
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Mar. 30, 2014
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| Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Share-based compensation expense before income taxes | $ 249,000,000us-gaap_AllocatedShareBasedCompensationExpense | $ 251,000,000us-gaap_AllocatedShareBasedCompensationExpense | $ 522,000,000us-gaap_AllocatedShareBasedCompensationExpense | $ 532,000,000us-gaap_AllocatedShareBasedCompensationExpense |
| Related income tax benefit | (43,000,000)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense | (53,000,000)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense | (86,000,000)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense | (109,000,000)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense |
| Share-based compensation expense, net of income taxes | 206,000,000us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | 198,000,000us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | 436,000,000us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | 423,000,000us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax |
| Share-based compensation expense related to share-based awards granted during period | 81,000,000qcom_ShareBasedCompensationExpenseRelatedToShareBasedAward | 82,000,000qcom_ShareBasedCompensationExpenseRelatedToShareBasedAward | ||
| Cost of equipment and services revenues | ||||
| Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Share-based compensation expense before income taxes |
11,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |
13,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |
23,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |
25,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |
| Research and development | ||||
| Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Share-based compensation expense before income taxes |
158,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember |
163,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember |
333,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember |
336,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember |
| Selling, general and administrative | ||||
| Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Share-based compensation expense before income taxes |
80,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember |
75,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember |
166,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember |
171,000,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember |
| Restricted Stock [Member] | ||||
| Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Unrecognized compensation costs related to non-vested restricted stock units |
$ 1,300,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
$ 1,300,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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| Weighted average period over which unrecognized compensation expense related to nonvested restricted stock units is expected to be recognized | 1 year 10 months | |||
| Equity Compensation Plans Consolidated [Member] | ||||
| Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Net share based awards granted in fiscal year as percent of total outstanding stock at beginning of fiscal period |
0.40%qcom_NetShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtBeginningOfFiscalYear / us-gaap_PlanNameAxis = qcom_EquityCompensationPlansConsolidatedMember |
0.40%qcom_NetShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtBeginningOfFiscalYear / us-gaap_PlanNameAxis = qcom_EquityCompensationPlansConsolidatedMember |
0.40%qcom_NetShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtBeginningOfFiscalYear / us-gaap_PlanNameAxis = qcom_EquityCompensationPlansConsolidatedMember |
0.40%qcom_NetShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtBeginningOfFiscalYear / us-gaap_PlanNameAxis = qcom_EquityCompensationPlansConsolidatedMember |
| Total share based awards granted in fiscal year as percent of total outstanding stock at end of fiscal period |
0.50%qcom_TotalShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtEndOfFiscalYear / us-gaap_PlanNameAxis = qcom_EquityCompensationPlansConsolidatedMember |
0.50%qcom_TotalShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtEndOfFiscalYear / us-gaap_PlanNameAxis = qcom_EquityCompensationPlansConsolidatedMember |
0.50%qcom_TotalShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtEndOfFiscalYear / us-gaap_PlanNameAxis = qcom_EquityCompensationPlansConsolidatedMember |
0.50%qcom_TotalShareBasedAwardsGrantedInFiscalYearAsPercentOfTotalOutstandingStockAtEndOfFiscalYear / us-gaap_PlanNameAxis = qcom_EquityCompensationPlansConsolidatedMember |
| X | ||||||||||
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- Definition
Represents net share-based awards granted (after forfeitures and cancellations) in a fiscal year as a percentage of the total number of stock outstanding at the beginning of each fiscal year. No definition available.
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- Definition
Represents the expense recognized during the period arising from share-based awards granted in the period (for example, shares of stock, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
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- Definition
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.
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
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- Definition
Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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