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.

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Balance Type:	na
Period Type:	duration

X

- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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X

- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Balance Type:	debit
Period Type:	duration

X

- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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X

- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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