Segment Information - Results by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Financial results by reportable segment
Net revenue:	$ 1,323	$ 1,165
Total operating income	209	10
Unallocated corporate items:
Share-based compensation expense	(111)	(111)
Amortization of acquired technology	(7)	(6)
Amortization of other acquired intangible assets	(2)	(2)
Operating Segments
Financial results by reportable segment
Total operating income	761	555
Segment Reconciling Items
Unallocated corporate items:
Share-based compensation expense	(111)	(111)
Other common expenses	(432)	(426)
Amortization of acquired technology	(7)	(6)
Amortization of other acquired intangible assets	(2)	(2)
Total unallocated corporate items	(552)	(545)
Small Business & Self-Employed
Financial results by reportable segment
Net revenue:	1,181	1,046
Small Business & Self-Employed | Operating Segments
Financial results by reportable segment
Total operating income	767	593
Consumer
Financial results by reportable segment
Net revenue:	119	100
Consumer | Operating Segments
Financial results by reportable segment
Total operating income	4	(20)
ProConnect
Financial results by reportable segment
Net revenue:	23	19
ProConnect | Operating Segments
Financial results by reportable segment
Total operating income	$ (10)	$ (18)