Goodwill and Acquired Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Goodwill [Roll Forward]
Goodwill, beginning	$ 1,286	$ 960
Goodwill Acquired/ Adjusted	(2)	326
Goodwill Impairment Charges	(38)
Goodwill, ending	1,246	1,286
Goodwill, Impaired, Accumulated Impairment Loss			0
Financial management solutions [Member]
Goodwill [Roll Forward]
Goodwill, beginning	467	151
Goodwill Acquired/ Adjusted	(2)	316
Goodwill Impairment Charges	0
Goodwill, ending	465	467
Employee management solutions [Member]
Goodwill [Roll Forward]
Goodwill, beginning	271	271
Goodwill Acquired/ Adjusted	0	0
Goodwill Impairment Charges	0
Goodwill, ending	271	271
Payment solutions [Member]
Goodwill [Roll Forward]
Goodwill, beginning	191	182
Goodwill Acquired/ Adjusted	0	9
Goodwill Impairment Charges	0
Goodwill, ending	191	191
Consumer tax [Member]
Goodwill [Roll Forward]
Goodwill, beginning	30	30
Goodwill Acquired/ Adjusted	0	0
Goodwill Impairment Charges	0
Goodwill, ending	30	30
Accounting professionals [Member]
Goodwill [Roll Forward]
Goodwill, beginning	90	90
Goodwill Acquired/ Adjusted	0	0
Goodwill Impairment Charges	0
Goodwill, ending	90	90
Other businesses [Member]
Goodwill [Roll Forward]
Goodwill, beginning	237	236
Goodwill Acquired/ Adjusted	0	1
Goodwill Impairment Charges	(38)
Goodwill, ending	$ 199	$ 237

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details