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GOODWILL AND INTANGIBLE ASSETS (Purchased Intangible Assets) (Detail) - USD ($) $ in Millions | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 1,457.5 | $ 1,475.4
Accumulated Amortization | (562.0) | (521.5)
Net | 895.5 | 953.9
Purchased data files |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 672.6 | 692.0
Accumulated Amortization | (223.7) | (218.8)
Net | 448.9 | 473.2
Acquired software and technology |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 54.0 | 53.9
Accumulated Amortization | (31.5) | (26.4)
Net | 22.5 | 27.5
Customer relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 572.4 | 570.7
Accumulated Amortization | (220.8) | (204.3)
Net | 351.6 | 366.4
Reacquired rights |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 73.3 | 73.3
Accumulated Amortization | (32.8) | (26.3)
Net | 40.5 | 47.0
Proprietary database |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 7.4 | 7.4
Accumulated Amortization | (5.6) | (5.4)
Net | 1.8 | 2.0
Non-compete agreements |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 26.9 | 27.0
Accumulated Amortization | (16.2) | (11.8)
Net | 10.7 | 15.2
Trade names and other intangible assets |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 50.9 | 51.1
Accumulated Amortization | (31.4) | (28.5)
Net | $ 19.5 | $ 22.6

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