Business Combinations (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			12 Months Ended		12 Months Ended
	Jul. 31, 2012	Jul. 31, 2012 Demandforce, Inc. [Member]	May 18, 2012 Demandforce, Inc. [Member]	Jul. 31, 2012 Medfusion, Inc. [Member]	May 21, 2010 Medfusion, Inc. [Member]	Jul. 31, 2012 Mint Software Inc. [Member]	Nov. 02, 2009 Mint Software Inc. [Member]
Business Combinations (Textuals)
Cost of acquired entity			$ 449		$ 89		$ 170
Fair value of assumed equity awards and cash retention bonuses that will be charged to expense over the service period			44		10		24
Business Acquisition Purchase Price Allocation Net Tangible Liabilities			4		8
Allocation of consideration to identified intangible assets			93		23		43
Excess consideration as goodwill			316		62		102
Amortization of identified intangible assets over weighted average life, in years		6 years		6 years		7 years
Period Cash Retention Bonuses And Fair Value Of Assumed Equity Awards Are Being Charged Over	3 years
Business Acquisition, Purchase Price Allocation, Net Tangible Assets							1
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount			$ 0		$ 0		$ 0