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Goodwill Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jul. 31, 2016 | Jan. 31, 2016
Goodwill [Roll Forward] |  |
Goodwill before accumulated impairment losses beginning balance | $ 1,684.2 |
Accumulated impairment losses | (149.2) | $ (149.2)
Goodwill | 1,597.4 | 1,535.0
Effect of foreign currency translation, purchase accounting adjustments, and other | (0.4) |
Goodwill before accumulated impairment losses ending balance | 1,746.6 |
Platform Solutions and Emerging Business |  |
Goodwill [Roll Forward] |  |
Goodwill before accumulated impairment losses beginning balance | 386.9 |
Accumulated impairment losses | 0.0 | 0.0
Goodwill | 405.0 | 386.9
Effect of foreign currency translation, purchase accounting adjustments, and other | 0.7 |
Goodwill before accumulated impairment losses ending balance | 405.0 |
Architecture, Engineering and Construction |  |
Goodwill [Roll Forward] |  |
Goodwill before accumulated impairment losses beginning balance | 427.2 |
Accumulated impairment losses | 0.0 | 0.0
Goodwill | 429.2 | 427.2
Effect of foreign currency translation, purchase accounting adjustments, and other | 2.0 |
Goodwill before accumulated impairment losses ending balance | 429.2 |
Manufacturing |  |
Goodwill [Roll Forward] |  |
Goodwill before accumulated impairment losses beginning balance | 613.9 |
Accumulated impairment losses | 0.0 | 0.0
Goodwill | 624.0 | 613.9
Effect of foreign currency translation, purchase accounting adjustments, and other | (3.5) |
Goodwill before accumulated impairment losses ending balance | 624.0 |
Media and Entertainment |  |
Goodwill [Roll Forward] |  |
Goodwill before accumulated impairment losses beginning balance | 256.2 |
Accumulated impairment losses | (149.2) | (149.2)
Goodwill | 139.2 | $ 107.0
Effect of foreign currency translation, purchase accounting adjustments, and other | 0.4 |
Goodwill before accumulated impairment losses ending balance | 288.4 |
Other |  |
Goodwill [Roll Forward] |  |
Goodwill | 62.8 |
Addition arising from other acquisitions | 62.8 |
Other | Platform Solutions and Emerging Business |  |
Goodwill [Roll Forward] |  |
Addition arising from other acquisitions | 17.4 |
Other | Architecture, Engineering and Construction |  |
Goodwill [Roll Forward] |  |
Addition arising from other acquisitions | 0.0 |
Other | Manufacturing |  |
Goodwill [Roll Forward] |  |
Addition arising from other acquisitions | 13.6 |
Other | Media and Entertainment |  |
Goodwill [Roll Forward] |  |
Addition arising from other acquisitions | $ 31.8 |

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