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GOODWILL AND INTANGIBLE ASSETS (Changes in Amount of Goodwill) (Detail) $ in Millions | 6 Months Ended
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Jun. 30, 2015 USD ($)
Goodwill [Line Items] |  |
Balance, December 31, 2014 |  | $ 2,606.8
Acquisitions |  | 0.0
Adjustments to initial purchase price allocation |  | 0.0
Foreign currency translation |  | (6.4)
Tax benefits of stock options exercised |  | 0.0
Balance, June 30, 2015 |  | 2,600.4
U.S. Information Solutions |  |
Goodwill [Line Items] |  |
Balance, December 31, 2014 |  | 1,120.6
Acquisitions |  | 0.0
Adjustments to initial purchase price allocation |  | 0.0
Foreign currency translation |  | 0.0
Tax benefits of stock options exercised |  | 0.0
Balance, June 30, 2015 |  | 1,120.6
International |  |
Goodwill [Line Items] |  |
Balance, December 31, 2014 | [1] | 487.0
Acquisitions |  | 0.0
Adjustments to initial purchase price allocation |  | 0.0
Foreign currency translation |  | (7.3)
Tax benefits of stock options exercised |  | 0.0
Balance, June 30, 2015 |  | 479.7
Workforce Solutions |  |
Goodwill [Line Items] |  |
Balance, December 31, 2014 |  | 907.6
Acquisitions |  | 0.0
Adjustments to initial purchase price allocation |  | 0.0
Foreign currency translation |  | 0.0
Tax benefits of stock options exercised |  | 0.0
Balance, June 30, 2015 |  | 907.6
Personal Solutions |  |
Goodwill [Line Items] |  |
Balance, December 31, 2014 | [1] | 91.6
Acquisitions |  | 0.0
Adjustments to initial purchase price allocation |  | 0.0
Foreign currency translation |  | 0.9
Tax benefits of stock options exercised |  | 0.0
Balance, June 30, 2015 |  | $ 92.5
[1] | The December 31, 2014 balances have been recast to reflect the new organizational structure. As of December 31, 2014, the Personal Solutions goodwill includes $75.0 million of goodwill from the Europe reporting unit.

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising 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 -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 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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