QUALCOMM Incorporated Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies Legal and Regulatory Proceedings (Details)

Commitments and Contingencies Legal and Regulatory Proceedings (Details) € in Millions, $ in Millions, ₩ in Billions		3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 16, 2019	Mar. 31, 2019 USD ($)	Dec. 24, 2017 USD ($)	Mar. 31, 2019 USD ($)	Mar. 25, 2018 USD ($)	Sep. 30, 2018 EUR (€)	Sep. 24, 2017 USD ($)	Sep. 24, 2017 KRW (₩)	Sep. 27, 2009 USD ($)	Sep. 27, 2009 KRW (₩)	Jan. 03, 2019 EUR (€)	Sep. 30, 2018 USD ($)
Apple [Member]
Loss Contingencies [Line Items]
Financial guarantees to enforce injunction		$ 1,500		$ 1,500
Apple [Member] \| Euro Member Countries, Euro
Loss Contingencies [Line Items]
Financial guarantees to enforce injunction \| €											€ 1,300
KFTC Complaint [Member]
Loss Contingencies [Line Items]
Loss contingency, loss in period									$ 230
Proceeds from fine reversal		$ 56
KFTC Complaint [Member] \| Korea (South), Won
Loss Contingencies [Line Items]
Loss contingency, loss in period \| ₩										₩ 273.2
KFTC Investigation [Member]
Loss Contingencies [Line Items]
Loss contingency, loss in period							$ 927
KFTC Investigation [Member] \| Korea (South), Won
Loss Contingencies [Line Items]
Loss contingency, loss in period \| ₩								₩ 1,030.0
EC [Member]
Loss Contingencies [Line Items]
Loss contingency, loss in period			$ 1,200		$ 1,200
Per annum interest rate for financial guarantees		1.50%		1.50%
Accrual for EC fine - other current liabilities		$ 1,140		$ 1,140								$ 1,167
EC [Member] \| Euro Member Countries, Euro
Loss Contingencies [Line Items]
Loss contingency, loss in period \| €						€ 997
Other Expenses [Member] \| KFTC Complaint [Member]
Loss Contingencies [Line Items]
Loss contingency, loss in period		(43)		$ (43)
Investment and Other Income, Net [Member] \| KFTC Complaint [Member]
Loss Contingencies [Line Items]
Interest income related to KFTC complaint		$ 13
Subsequent Event [Member] \| Apple [Member]
Loss Contingencies [Line Items]
Terms of settlement agreements with Apple	On April 16, 2019, we entered into settlement agreements with Apple and its contract manufacturers to dismiss all outstanding litigation between the parties.