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Business Segments (Tables) | 3 Months Ended
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Mar. 31, 2017
Segment Reporting [Abstract] |
Schedule of Operating Segments | The following table presents certain information regarding our operating segments for the three months ended March 31, 2017 and 2016:
| Market Services |  | Corporate Services |  | Information Services |  | Market Technology |  | Corporate Items |  | Consolidated
| (in millions)
Three Months Ended March 31, 2017 |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ | 606 |  |  | $ | 160 |  |  | $ | 138 |  |  | $ | 67 |  |  | $ | — |  |  | $ | 971 |
Transaction-based expenses | (388 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (388 | )
Revenues less transaction-based expenses | 218 |  |  | 160 |  |  | 138 |  |  | 67 |  |  | — |  |  | 583 |
Operating income (loss) | $ | 119 |  |  | $ | 43 |  |  | $ | 102 |  |  | $ | 13 |  |  | $ | (29 | ) |  | $ | 248 |
Three Months Ended March 31, 2016 |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ | 572 |  |  | $ | 143 |  |  | $ | 133 |  |  | $ | 57 |  |  | $ | — |  |  | $ | 905 |
Transaction-based expenses | (371 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (371 | )
Revenues less transaction-based expenses | 201 |  |  | 143 |  |  | 133 |  |  | 57 |  |  | — |  |  | 534 |
Operating income (loss) | $ | 113 |  |  | $ | 34 |  |  | $ | 97 |  |  | $ | 10 |  |  | $ | (35 | ) |  | $ | 219 |
Schedule of Corporate Items | A summary of our corporate items are as follows:
| Three Months Ended March 31,
| 2017 |  | 2016
| (in millions)
Amortization expense of acquired intangible assets | $ | 23 |  |  | $ | 17 |
Restructuring charges | — |  |  | 9 |
Merger and strategic initiatives expense | 6 |  |  | 9 |
Total | $ | 29 |  |  | $ | 35 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: 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=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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