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GOODWILL AND INTANGIBLE ASSETS (Purchased Intangible Assets) (Detail) - USD ($) $ in Millions | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 1,446.8 | $ 1,475.4
Accumulated Amortization | (587.1) | (521.5)
Net | 859.7 | 953.9
Purchased data files |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 668.4 | 692.0
Accumulated Amortization | (231.6) | (218.8)
Net | 436.8 | 473.2
Acquired software and technology |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 53.1 | 53.9
Accumulated Amortization | (33.7) | (26.4)
Net | 19.4 | 27.5
Customer relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 567.9 | 570.7
Accumulated Amortization | (230.0) | (204.3)
Net | 337.9 | 366.4
Reacquired rights |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 73.3 | 73.3
Accumulated Amortization | (36.1) | (26.3)
Net | 37.2 | 47.0
Proprietary database |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 7.4 | 7.4
Accumulated Amortization | (5.7) | (5.4)
Net | 1.7 | 2.0
Non-compete agreements |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 26.3 | 27.0
Accumulated Amortization | (17.3) | (11.8)
Net | 9.0 | 15.2
Trade names and other intangible assets |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 50.4 | 51.1
Accumulated Amortization | (32.7) | (28.5)
Net | $ 17.7 | $ 22.6

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