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GOODWILL AND INTANGIBLE ASSETS (Changes in Amount of Goodwill) (Detail) $ in Millions		6 Months Ended
		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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