v2.4.0.8
Clearing Operations (Schedule of Clearing Member Default Fund Contributions And Margin Deposits) (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Clearing Operations [Line Items]  
Default fund contributions $ 314
Margin deposits 11,174
Default fund contributions and margin deposits 11,488
Cash Contributions [Member]
  
Clearing Operations [Line Items]  
Default fund contributions 239 [1],[2]
Margin deposits 1,695 [1],[2]
Default fund contributions and margin deposits 1,934 [1],[2]
Non-Cash Contributions [Member]
  
Clearing Operations [Line Items]  
Default fund contributions 75
Margin deposits 9,479
Default fund contributions and margin deposits $ 9,554
[1] As of September 30, 2013, in accordance with its investment policy, NASDAQ OMX Nordic Clearing has invested cash contributions of $1,229 million in reverse repurchase agreements and $663 million in highly rated government debt securities
[2] Pursuant to clearing member agreements, we pay interest on cash contributions to clearing members.