v2.4.0.6
Deferred Revenue (Changes in Deferred Revenue) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Deferred Revenue Arrangement [Line Items]    
Balance $ 295 $ 278
Additions 194 [1] 217 [1]
Amortization (89) [1] (90) [1]
Translation adjustment (2) 5
Balance 398 410
Initial Listing Revenues [Member]
    
Deferred Revenue Arrangement [Line Items]    
Balance 36 39
Additions 2 [1] 3 [1]
Amortization (4) [1] (4) [1]
Balance 34 38
Listing of Additional Shares Revenues [Member]
    
Deferred Revenue Arrangement [Line Items]    
Balance 78 86
Additions 8 [1] 2 [1]
Amortization (10) [1] (10) [1]
Balance 76 78
Annual Renewal and Other Revenues [Member]
    
Deferred Revenue Arrangement [Line Items]    
Balance 32 25
Additions 168 [1] 165 [1]
Amortization (55) [1] (52) [1]
Translation adjustment (7)  
Balance 138 138
Technology Solutions [Member]
    
Deferred Revenue Arrangement [Line Items]    
Balance 149 [2] 128 [2]
Additions 16 [1],[2] 47 [1],[2]
Amortization (20) [1],[2] (24) [1],[2]
Translation adjustment 5 [2] 5 [2]
Balance $ 150 [2],[3] $ 156 [2]
[1] The additions and amortization for initial listing revenues, listing of additional shares revenues and annual renewal and other revenues primarily reflect revenues from our U.S. listing services business.
[2] Market Technology deferred revenues include revenues from delivered client contracts in the support phase charged during the period. Under contract accounting, 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. 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 Market Technology deferred revenue primarily includes revenues earned from client contracts recognized during the period.
[3] The timing of recognition of our deferred Market Technology revenues is dependent upon the completion of customization and any significant modifications made pursuant to existing contracts. As such, as it relates to these revenues, the timing represents our best estimate.