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Business Combinations (Details) (USD $)
In Millions, unless otherwise specified
1 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended
May 31, 2010
Medfusion, Inc. [Member]
Years
May 21, 2010
Medfusion, Inc. [Member]
Nov. 30, 2009
Mint Software Inc. [Member]
Years
Jul. 31, 2011
Mint Software Inc. [Member]
Nov. 02, 2009
Mint Software Inc. [Member]
Jul. 31, 2009
PayCycle, Inc. [Member]
Years
Jul. 23, 2009
PayCycle, Inc. [Member]
Business Combinations (Textuals)              
Period Cash Retention Bonuses And Fair Value Of Assumed Equity Awards Are Being Charged Over       3 years      
Cost of acquired entity   $ 89     $ 170   $ 169
Fair value of assumed equity awards and cash retention bonuses that will be charged to expense over a three year service period   10     24    
Allocation of consideration to tangible assets and liabilities   8     1   5
Allocation of consideration to identified intangible assets   23     43   42
Excess consideration as goodwill   62     102   122
Amortization of identified intangible assets over weighted average life, in years 6   7     7  
Expected tax deductible amount of goodwill acquired   $ 0     $ 0   $ 0