Consolidated Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 26, 2014	Apr. 27, 2013	Apr. 26, 2014	Apr. 27, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 2,181	$ 2,478	$ 5,606	$ 7,713
Change in net unrealized gains, net of tax benefit (expense) of $(8) and $(131) for the three and nine months ended April 26, 2014, respectively, and $38 and $(7) for the corresponding periods of fiscal 2013, respectively	(8)	(63)	209	10
Net gains reclassified into earnings, net of tax expense of $26 and $88 for the three and nine months ended April 26, 2014, respectively, and $2 and $16 for the corresponding periods of fiscal 2013, respectively	(43)	(4)	(146)	(30)
Total available-for-sale investments	(51)	(67)	63	(20)
Change in unrealized gains and losses, net of tax benefit (expense) of $(1) and $(2) for the three and nine months ended April 26, 2014, respectively, and $1 and $(1) for the corresponding periods of fiscal 2013, respectively	13	(10)	44	58
Net (gains) losses reclassified into earnings	(16)	(4)	(44)	(7)
Total cash flow hedging instruments	(3)	(14)	0	51
Net change in cumulative translation adjustment and other, net of tax benefit (expense) of $(5) for each of the three and nine months ended April 26, 2014, respectively, and $1 and $(14) for the corresponding periods of fiscal 2013, respectively	42	(128)	27	(8)
Other comprehensive (loss) income	(12)	(209)	90	23
Comprehensive income	2,169	2,269	5,696	7,736
Comprehensive (income) loss attributable to noncontrolling interests	6	0	(1)	5
Comprehensive income attributable to Cisco Systems, Inc.	$ 2,175	$ 2,269	$ 5,695	$ 7,741