Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Cash flows from operating activities:
Net income	$ 822	$ 734	$ 874	$ 788
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	42	42	124	130
Amortization of acquired intangible assets	15	10	45	55
Goodwill and intangible asset impairment charge	46	0	46	0
Share-based compensation expense	46	37	142	120
Pre-tax gain on sale of discontinued operations	0	0	(53)	0
Deferred income taxes	4	18	52	1
Tax benefit from share-based compensation plans	9	19	65	64
Excess tax benefit from share-based compensation plans	(9)	(19)	(65)	(62)
Other	3	1	12	3
Total adjustments	156	108	368	311
Changes in operating assets and liabilities:
Accounts receivable	229	297	(129)	(124)
Prepaid expenses, income taxes receivable and other assets	194	102	49	84
Accounts payable	18	(4)	76	80
Accrued compensation and related liabilities	28	42	(20)	(5)
Deferred revenue	(228)	(218)	(11)	(36)
Income taxes payable	273	256	274	257
Other liabilities	(43)	(39)	79	73
Total changes in operating assets and liabilities	471	436	318	329
Net cash provided by operating activities	1,449	1,278	1,560	1,428
Cash flows from investing activities:
Purchases of available-for-sale debt securities	(465)	(149)	(675)	(492)
Sales of available-for-sale debt securities	89	116	279	382
Maturities of available-for-sale debt securities	70	49	165	138
Net change in money market funds and other cash equivalents held to satisfy customer fund obligations	100	5	106	89
Net change in customer fund deposits	(100)	(5)	(106)	(89)
Purchases of property and equipment	(32)	(33)	(147)	(125)
Proceeds from divestiture of businesses	0	0	60	0
Other	(7)	0	(29)	15
Net cash used in investing activities	(345)	(17)	(347)	(82)
Cash flows from financing activities:
Repayment of debt	0	(500)	0	(500)
Net proceeds from issuance of treasury stock under employee stock plans	44	54	185	160
Purchases of treasury stock	(92)	(207)	(292)	(793)
Cash dividends paid to stockholders	(51)	(45)	(152)	(134)
Excess tax benefit from share-based compensation plans	9	19	65	62
Net cash used in financing activities	(90)	(679)	(194)	(1,205)
Effect of exchange rates on cash and cash equivalents	(1)	0	0	(4)
Net increase (decrease) in cash and cash equivalents	1,013	582	1,019	137
Cash and cash equivalents at beginning of period	399	277	393	722
Cash and cash equivalents at end of period	$ 1,412	$ 859	$ 1,412	$ 859