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Subsequent Events (Acquisition) (Details) (GXS Group, Inc. [Member], Subsequent Event [Member], USD $)
In Billions, except Share data, unless otherwise specified
0 Months Ended
Jan. 16, 2014
GXS Group, Inc. [Member] | Subsequent Event [Member]
 
Subsequent Event [Line Items]  
Percentage of voting interests acquired 100.00%
Acquisition, number of shares issued 1,297,521
Acquisition, cash paid $ 1.1