v2.4.0.8
Acquisitions and Divestitures (Schedule Of Acquisition) (Details)
In Millions, unless otherwise specified
 3 Months Ended
Sep. 30, 2013
USD ($)
Dec. 31, 2012
USD ($)
May 31, 2012
USD ($)
Sep. 30, 2012
NOS Clearing [Member]
USD ($)
Dec. 31, 2012
NOS Clearing [Member]
USD ($)
Jul. 31, 2012
NOS Clearing [Member]
USD ($)
Jul. 31, 2012
NOS Clearing [Member]
NOK
Dec. 31, 2012
BWise [Member]
USD ($)
May 31, 2012
BWise [Member]
USD ($)
May 31, 2012
BWise [Member]
EUR (€)
Sep. 30, 2013
eSpeed [Member]
USD ($)
Jun. 28, 2013
eSpeed [Member]
USD ($)
Sep. 30, 2013
TR Businesses [Member]
USD ($)
May 31, 2013
TR Businesses [Member]
USD ($)
Business Acquisition [Line Items]                            
Purchase consideration         $ 40 [1] $ 40 233 $ 77 $ 77 € 62 $ 1,239 $ 1,200 $ 366 $ 390
Net assets acquired         43 [1] 43   (11) (11)   5 5 (37) 37
Purchased Intangible Assets     35   1 [1] 1   35 35   715 715 91  
Goodwill 6,191 5,335           53     519   312  
Gain on acquisition       $ 4                    
[1] In the third quarter of 2012, we recognized a gain of $4 million on our acquisition of NOS Clearing, which is included in merger and strategic initiatives expense in the Condensed Consolidated Statements of Income.