Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014 Segment	Apr. 30, 2013
Segment Reporting Information [Line Items]
Number of Reportable Segments			3
Financial results by reportable segment
Net revenue	$ 2,388	$ 2,091	$ 3,792	$ 3,537
Operating income (loss) from continuing operations	1,494	1,282	1,371	1,293
Unallocated corporate items:
Share-based compensation expense	(49)	(43)	(148)	(133)
Amortization of acquired technology	(6)	(5)	(18)	(14)
Amortization of other acquired intangible assets	(5)	(7)	(14)	(21)
Operating Segments [Member]
Financial results by reportable segment
Operating income (loss) from continuing operations	1,717	1,471	2,059	1,902
Small Business Segment [Member]
Financial results by reportable segment
Net revenue	569	530	1,649	1,517
Operating income (loss) from continuing operations	224	223	611	578
Small Business Segment [Member] | Small Business Financial Solutions [Member]
Financial results by reportable segment
Net revenue	347	336	1,003	950
Small Business Segment [Member] | Small Business Management Solutions [Member]
Financial results by reportable segment
Net revenue	204	177	595	516
Small Business Segment [Member] | Accountant and Advisor [Member]
Financial results by reportable segment
Net revenue	18	17	51	51
Consumer Segment [Member]
Segment Reporting Information [Line Items]
Number of Product Lines	2		2
Financial results by reportable segment
Net revenue	1,485	1,308	1,749	1,639
Operating income (loss) from continuing operations	1,199	1,033	1,172	1,054
Consumer Segment [Member] | Consumer Tax [Member]
Financial results by reportable segment
Net revenue	1,437	1,261	1,617	1,515
Consumer Segment [Member] | Consumer Ecosystem [Member]
Financial results by reportable segment
Net revenue	48	47	132	124
Professional Tax Segment [Member]
Financial results by reportable segment
Net revenue	334	253	394	381
Operating income (loss) from continuing operations	294	215	276	270
Segment Reconciling Items [Member]
Unallocated corporate items:
Share-based compensation expense	(49)	(43)	(148)	(133)
Other common expenses	(163)	(134)	(508)	(441)
Amortization of acquired technology	(6)	(5)	(18)	(14)
Amortization of other acquired intangible assets	(5)	(7)	(14)	(21)
Total unallocated corporate items	$ (223)	$ (189)	$ (688)	$ (609)
Maximum [Member]
Segment Reporting Information [Line Items]
International Total Net Revenue As A Percentage Of Total	5.00%	5.00%	5.00%	5.00%