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Goodwill (Tables) | 6 Months Ended
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Jul. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The change in the carrying amount of goodwill by reportable segment during the six months ended July 31, 2016 is as follows:
| Platform Solutions and Emerging Business |  | Architecture, Engineering and Construction |  | Manufacturing |  | Media and Entertainment |  | Total
Balances as of January 31, 2016 |  |  |  |  |  |  |  |  |
Goodwill | $ | 386.9 |  |  | $ | 427.2 |  |  | $ | 613.9 |  |  | $ | 256.2 |  |  | $ | 1,684.2 |
Accumulated impairment losses | — |  |  | — |  |  | — |  |  | (149.2 | ) |  | (149.2 | )
| 386.9 |  |  | 427.2 |  |  | 613.9 |  |  | 107.0 |  |  | 1,535.0 |
Addition arising from other acquisitions | 17.4 |  |  | — |  |  | 13.6 |  |  | 31.8 |  |  | 62.8 |
Effect of foreign currency translation, purchase accounting adjustments, and other | 0.7 |  |  | 2.0 |  |  | (3.5 | ) |  | 0.4 |  |  | (0.4 | )
Balances as of July 31, 2016 |  |  |  |  |  |  |  |  |
Goodwill | 405.0 |  |  | 429.2 |  |  | 624.0 |  |  | 288.4 |  |  | 1,746.6 |
Accumulated impairment losses | — |  |  | — |  |  | — |  |  | (149.2 | ) |  | (149.2 | )
| $ | 405.0 |  |  | $ | 429.2 |  |  | $ | 624.0 |  |  | $ | 139.2 |  |  | $ | 1,597.4 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + 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=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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