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Goodwill and Acquired Intangible Assets (Schedule of Changes in Goodwill) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2016 USD ($)
Goodwill [Roll Forward] |
Balance at beginning of period | $ 5,395
Goodwill acquired | 837
Foreign currency translation adjustment | (205)
Balance at end of period | 6,027
Market Services |
Goodwill [Roll Forward] |
Balance at beginning of period | 2,941
Goodwill acquired | 549
Foreign currency translation adjustment | (100)
Balance at end of period | 3,390
Corporate Services |
Goodwill [Roll Forward] |
Balance at beginning of period | 467
Goodwill acquired | 234
Foreign currency translation adjustment | (27)
Balance at end of period | 674
Information Services |
Goodwill [Roll Forward] |
Balance at beginning of period | 1,823
Goodwill acquired | 54
Foreign currency translation adjustment | (71)
Balance at end of period | 1,806
Market Technology Revenues |
Goodwill [Roll Forward] |
Balance at beginning of period | 164
Goodwill acquired | 0
Foreign currency translation adjustment | (7)
Balance at end of period | $ 157

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- 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 (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits 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=35741047&loc=d3e13816-109267 + Details
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