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GOODWILL AND OTHER INTANGIBLE ASSETS (Changes in Amount of Goodwill) (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | $ 2,606.8 | [1] | $ 2,395.1 |  |
Acquisitions |  |  |  | 240.2 |  |
Adjustments to initial purchase price allocation |  |  |  | 2.1 |  |
Foreign currency translation |  | (35.8) |  | (30.5) |  |
Tax benefits of options exercised |  |  |  | (0.1) |  |
Ending Balance |  | 2,571.0 |  | 2,606.8 | [1] |
U.S. Information Solutions |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance | [1] | 1,071.3 |  | 1,004.9 | [2] |
Acquisitions |  |  |  | 66.4 |  |
Adjustments to initial purchase price allocation |  |  |  | 0.0 |  |
Foreign currency translation |  | 0.0 |  | 0.0 |  |
Tax benefits of options exercised |  |  |  | 0.0 |  |
Ending Balance |  | 1,071.3 |  | 1,071.3 | [1] |
International |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance | [1] | 473.1 |  | 322.7 | [2] |
Acquisitions |  |  |  | 173.8 |  |
Adjustments to initial purchase price allocation |  |  |  | 2.1 |  |
Foreign currency translation |  | (31.6) |  | (25.5) |  |
Tax benefits of options exercised |  |  |  | 0.0 |  |
Ending Balance |  | 441.5 |  | 473.1 | [1] |
Workforce Solutions |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 907.6 |  | 907.7 |  |
Acquisitions |  |  |  | 0.0 |  |
Adjustments to initial purchase price allocation |  |  |  | 0.0 |  |
Foreign currency translation |  | 0.0 |  | 0.0 |  |
Tax benefits of options exercised |  |  |  | (0.1) |  |
Ending Balance |  | 907.6 |  | 907.6 |  |
Personal Solutions |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 154.8 |  | 159.8 |  |
Acquisitions |  |  |  | 0.0 |  |
Adjustments to initial purchase price allocation |  |  |  | 0.0 |  |
Foreign currency translation |  | (4.2) |  | (5.0) |  |
Tax benefits of options exercised |  |  |  | 0.0 |  |
Ending Balance |  | $ 150.6 |  | 154.8 |  |
Intersegment Eliminations [Member] | Personal Solutions [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill Reallocated from USIS segment |  |  |  | 49.3 |  | $ 49.3
Goodwill [Roll Forward] |  |  |  |  |  |
Goodwill Reallocated from International segment |  |  |  | 88.8 |  | $ 93.8
Intersegment Eliminations [Member] | U.S. Information Solutions |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  |  | 21.7 |  |
Intersegment Eliminations [Member] | International |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  |  | $ 15.5 |  |
[1] | (1)The December 31, 2014 and 2013 balances have been recast to reflect the new organizational structure. As of December 31, 2014, the Personal Solutions goodwill includes $49.3 million and $88.8 million of goodwill from the USIS and International segments, respectively. As of December 31, 2013, the Personal Solutions goodwill includes $49.3 million and $93.8 million of goodwill from the USIS and International segments, respectively.
[2] | (2) The December 31, 2013 balances have been recast to reflect the new organizational structure. As of December 31, 2013, the USIS and International goodwill include $21.7 million and $15.5 million of goodwill, respectively, from the legacy NACS segment.

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