Cash and Cash Equivalents, Investments and Funds Held for Customers (Tables)

12 Months Ended

Jul. 31, 2011

Cash and Cash Equivalents, Investments and Funds Held for Customers [Abstract]

Cash and cash equivalents, investments and funds held for customers by balance sheet classification

The following table summarizes our cash and cash equivalents, investments and funds held for customers by balance sheet classification at the dates indicated.

	July 31, 2011				July 31, 2010
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Classification on balance sheets:
Cash and cash equivalents	$	722	$	722	$	214	$	214
Investments	698		699		1,407		1,408
Funds held for customers	413		414		336		337
Long-term investments	63		63		91		91
Total cash and cash equivalents, investments and funds held for customers	$	1,896	$	1,898	$	2,048	$	2,050

Cash and cash equivalents, investments and funds held for customers by investment category

The following table summarizes our cash and cash equivalents, investments and funds held for customers by investment category at the dates indicated. See Note 2 for more information on our municipal auction rate securities.

	July 31, 2011				July 31, 2010
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Type of issue:
Total cash and cash equivalents	$	961	$	961	$	401	$	401
Available-for-sale debt securities:
Municipal bonds	434		434		1,049		1,050
Municipal auction rate securities	59		59		87		87
Corporate notes	287		288		333		334
U.S. agency securities	151		152		174		174
Total available-for-sale debt securities	931		933		1,643		1,645
Other long-term investments	4		4		4		4
Total cash and cash equivalents, investments and funds held for customers	$	1,896	$	1,898	$	2,048	$	2,050

Available-for-sale debt securities classified by the stated maturity date of the security

The following table summarizes our available-for-sale debt securities classified by the stated maturity date of the security at the dates indicated.

	July 31, 2011				July 31, 2010
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due within one year	$	267	$	267	$	432	$	433
Due within two years	323		324		365		366
Due within three years	190		191		164		164
Due after three years	151		151		682		682
Total available-for-sale debt securities	$	931	$	933	$	1,643	$	1,645