Fair Value Measurements (Tables)

12 Months Ended

Jul. 31, 2014

Fair Value Disclosures [Abstract]

Financial assets and liabilities measured at fair value on recurring basis

The following table summarizes financial assets and financial liabilities that we measured at fair value on a recurring basis at the dates indicated, classified in accordance with the fair value hierarchy described above.

	At July 31, 2014								At July 31, 2013
(In millions)	Level 1		Level 2		Level 3		Total Fair Value		Level 1		Level 2		Level 3		Total Fair Value
Assets:
Cash equivalents, primarily money market funds	$	652	$	—	$	—	$	652	$	917	$	—	$	—	$	917
Available-for-sale debt securities:
Municipal bonds	—		701		—		701		—		489		—		489
Municipal auction rate securities	—		—		21		21		—		—		33		33
Corporate notes	—		466		—		466		—		269		—		269
U.S. agency securities	—		42		—		42		—		69		—		69
Available-for-sale corporate equity securities	—		—		—		—		33		—		—		33
Total available-for-sale securities	—		1,209		21		1,230		33		827		33		893
Total assets measured at fair value on a recurring basis	$	652	$	1,209	$	21	$	1,882	$	950	$	827	$	33	$	1,810
Liabilities:
Senior notes (1)	$	—	$	556	$	—	$	556	$	—	$	560	$	—	$	560

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(1) Carrying value on our balance sheets at July 31, 2014 was $499 million and at July 31, 2013 was $499 million. See Note 9.

Cash equivalents and available-for-sale debt and equity securities by balance sheet classification and level in the fair value hierarchy

The following table summarizes our cash equivalents and available-for-sale debt and equity securities by balance sheet classification and level in the fair value hierarchy at the dates shown:

	At July 31, 2014								At July 31, 2013
(In millions)	Level 1		Level 2		Level 3		Total Fair Value		Level 1		Level 2		Level 3		Total Fair Value
Cash equivalents:
In cash and cash equivalents	$	507	$	—	$	—	$	507	$	857	$	—	$	—	$	857
In funds held for customers	145		—		—		145		60		—		—		60
Total cash and cash equivalents	$	652	$	—	$	—	$	652	$	917	$	—	$	—	$	917
Available-for-sale securities:
In investments	$	—	$	1,065	$	—	$	1,065	$	—	$	652	$	—	$	652
In funds held for customers	—		144		—		144		—		175		—		175
In long-term investments	—		—		21		21		33		—		33		66
Total available-for-sale securities	$	—	$	1,209	$	21	$	1,230	$	33	$	827	$	33	$	893