v2.4.0.8

Goodwill and Purchased Intangible Assets (Schedule of Changes in Goodwill) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Goodwill [Line Items]
Balance	$ 5,335
Goodwill acquired	831
Foreign currency translation adjustment	25
Balance	6,191
Market Services [Member]
Goodwill [Line Items]
Balance	2,955
Goodwill acquired	470
Foreign currency translation adjustment	14
Balance	3,439
Listing Services [Member]
Goodwill [Line Items]
Balance	136
Foreign currency translation adjustment	1
Balance	137
Information Services [Member]
Goodwill [Line Items]
Balance	1,964
Goodwill acquired	49
Foreign currency translation adjustment	8
Balance	2,021
Technology Solutions [Member]
Goodwill [Line Items]
Balance	280
Goodwill acquired	312
Foreign currency translation adjustment	2
Balance	$ 594

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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X

- Details

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X

- Definition

Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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