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

Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies Update Cumulative Effective of Adopting New Revenue Accounting Guidance (Details)

Basis of Presentation and Significant Accounting Policies Update Cumulative Effective of Adopting New Revenue Accounting Guidance (Details) - USD ($) $ in Millions	3 Months Ended							12 Months Ended
	Dec. 30, 2018	Sep. 30, 2018	Jun. 24, 2018	Mar. 25, 2018	Dec. 24, 2017	Sep. 24, 2017	Jun. 25, 2017	Sep. 30, 2018	Sep. 24, 2017	Oct. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net	$ 3,426	$ 2,904						$ 2,904		$ 3,861
Other current assets	855	699						699		700
Deferred tax assets	3,923	936				$ 2,912		936	$ 2,912	838
Other assets	2,056	1,970						1,970		1,971
Unearned revenues, current	484	500						500		506
Other current liabilities	6,831	6,978				4,789		6,978	4,789	7,103
Unearned revenues	1,420	1,620						1,620		1,510
Retained earnings	3,415	542				30,067		542	30,067	1,382
Equipment and services	3,754				$ 4,704
Licensing	1,088	1,128	$ 1,467	$ 1,284	1,331	1,190	$ 1,235	5,211	5,611
Investment and other income, net	5				114
Income tax benefit	509	287	268	13	(5,923)	(260)	12	(5,356)	(543)
Net income	1,068	(513)	$ 1,202	$ 330	$ (5,983)	$ 157	$ 856	(4,964)	$ 2,445
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net	2,581	2,904						2,904
Other current assets	878	699						699
Deferred tax assets	3,979	936						936
Other assets	2,057	1,970						1,970
Unearned revenues, current	488	500						500
Other current liabilities	6,560	6,978						6,978
Unearned revenues	1,729	1,620						1,620
Retained earnings	2,608	$ 542						$ 542
Equipment and services	3,739
Licensing	1,139
Investment and other income, net	7
Income tax benefit	504
Net income	1,101
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net	845									957
Other current assets	23									1
Deferred tax assets	56									98
Other assets	1									1
Unearned revenues, current	4									6
Other current liabilities	271									125
Unearned revenues	309									110
Retained earnings	(807)									$ 840
Equipment and services	(15)
Licensing	51
Investment and other income, net	2
Income tax benefit	(5)
Net income	$ 33