v2.4.0.8

Nasdaq Omx Stockholders' Equity (Schedule of Dividends Declared) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Dividends Payable [Line Items] |  |  |  |  |
Dividend Per Common Share | $ 0.13 | $ 0.13 | $ 0.39 |  | $ 0.26
January 31, 2013 [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Declaration Date |  |  | Jan. 31, 2013 |  |
Dividend Per Common Share |  |  | $ 0.13 |  |
Record Date |  |  | Mar. 14, 2013 |  |
Total Amount |  |  | $ 21 | [1] |
Payment Date |  |  | Mar. 28, 2013 |  |
April 24, 2013 [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Declaration Date |  |  | Apr. 24, 2013 |  |
Dividend Per Common Share |  |  | $ 0.13 |  |
Record Date |  |  | Jun. 14, 2013 |  |
Total Amount |  |  | 22 | [1] |
Payment Date |  |  | Jun. 28, 2013 |  |
July 24, 2013 [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Declaration Date |  |  | Jul. 24, 2013 |  |
Dividend Per Common Share |  |  | $ 0.13 |  |
Record Date |  |  | Sep. 13, 2013 |  |
Total Amount |  |  | $ 22 | [1] |
Payment Date |  |  | Sep. 27, 2013 |  |
[1] | This amount was recorded in retained earnings in the Condensed Consolidated Balance Sheets at September 30, 2013.

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