v2.4.0.8
Deferred Revenue (Estimated Deferred Revenue) (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2011
Deferred Revenue Arrangement [Line Items]        
2013 $ 109 [1]      
2014 95      
2015 58      
2016 42      
2017 23      
2018 and thereafter 12      
Deferred revenue estimated revenue to be recognized 339 295 325 278
Initial Listing Revenues [Member]
        
Deferred Revenue Arrangement [Line Items]        
2013 3 [1]      
2014 10      
2015 9      
2016 7      
2017 5      
2018 and thereafter 4      
Deferred revenue estimated revenue to be recognized 38 36 36 39
Listing of Additional Shares Revenues [Member]
        
Deferred Revenue Arrangement [Line Items]        
2013 10 [1]      
2014 31      
2015 20      
2016 12      
2017 3      
Deferred revenue estimated revenue to be recognized 76 78 79 86
Annual Renewal and Other Revenues [Member]
        
Deferred Revenue Arrangement [Line Items]        
2013 60 [1]      
2014 4      
Deferred revenue estimated revenue to be recognized 64 32 69 25
Technology Solutions [Member]
        
Deferred Revenue Arrangement [Line Items]        
2013 36 [1],[2]      
2014 50 [2]      
2015 29 [2]      
2016 23 [2]      
2017 15 [2]      
2018 and thereafter 8 [2]      
Deferred revenue estimated revenue to be recognized $ 161 [2],[3] $ 149 [3] $ 141 [3] $ 128 [3]
[1] Represents deferred revenue that is anticipated to be recognized over the remaining three months of 2013.
[2] The timing of recognition of our deferred Technology Solutions revenues is primarily dependent upon the completion of customization and any significant modifications made pursuant to existing Market Technology contracts and the timing of Corporate Solutions subscription-based contracts. As such, as it relates to Market Technology revenues, the timing represents our best estimate.
[3] Technology Solutions deferred revenues primarily include revenues from our Market Technology delivered client contracts in the support phase charged during the period and our Corporate Solutions subscription based contracts. For our Market Technology contracts, where customization and significant modifications to the software are made to meet the needs of our customers, total revenues, as well as costs incurred, are deferred until significant modifications are completed and delivered. Once delivered, deferred revenue and the related deferred costs are recognized over the post contract support period. For these Market Technology contracts, we have included the deferral of costs in other current assets and other non-current assets in the Condensed Consolidated Balance Sheets. The amortization of Technology Solutions deferred revenue primarily includes revenues earned from Market Technology client contracts and Corporate Solutions subscription based contracts recognized during the period.