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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Additional Information) (Detail) shares in Thousands |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Feb. 05, 2015 shares | Oct. 24, 2014 USD ($) shares | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2015 USD ($) segment shares | Dec. 31, 2014 USD ($) shares | Dec. 31, 2013 USD ($) shares | Jan. 31, 2016 USD ($) | Jan. 31, 2016 AUD | Dec. 31, 2015 AUD
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Goodwill and Intangible Asset Impairment |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 |  |  |
Number of reportable segments | segment |  |  |  |  |  |  | 4 |  |  |  |  |
Advertising costs from continuing operation |  |  |  |  |  |  | $ 65,100,000 | 57,100,000 | 57,500,000 |  |  |
Bad debt expense from continuing operations |  |  |  |  |  |  | 4,300,000 | 2,500,000 | 2,800,000 |  |  |
Depreciation expense |  |  |  |  |  |  | 75,700,000 | 71,700,000 | 71,200,000 |  |  |
Fixed assets ,Collateral |  |  |  |  | $ 108,500,000 | $ 92,300,000 | 108,500,000 | 92,300,000 |  |  |  |
Foreign currency transaction loss |  |  |  |  |  |  | 2,000,000 | 7,000,000 | $ 6,800,000 |  |  |
Long term debt |  |  |  |  | 1,196,800,000 | 1,527,900,000 | 1,196,800,000 | 1,527,900,000 |  |  |  |
Variable interest maximum exposure to loss |  |  |  |  | 10,500,000 |  | 10,500,000 |  |  |  |  |
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net |  |  |  |  |  |  |  | 0 |  |  |  |
Variable Interest Entity, Initial Consolidation, Gain (Loss) |  |  |  |  |  |  | 0 |  |  |  |  |
Redemption Adjustment in Excess of Fair Value |  |  |  |  |  |  | 0 |  |  |  |  |
Fair Value |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative Asset | [1] |  |  |  | 14,400,000 |  | $ 14,400,000 |  |  |  |  |
Computer Software Intangible Asset | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  |  |  | 10 years |  |  |  |  |
Computer Software Intangible Asset | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  |  |  | 3 years |  |  |  |  |
Fixed Rate Debt |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Fair value of debt |  |  |  |  | 1,200,000,000 | 1,300,000,000 | $ 1,200,000,000 | 1,300,000,000 |  |  |  |
Long term debt |  |  |  |  | 1,100,000,000 | 1,100,000,000 | $ 1,100,000,000 | $ 1,100,000,000 |  |  |  |
Data Processing Equipment Capitalized Internal Use Software and Systems Costs | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  |  |  | 10 years |  |  |  |  |
Data Processing Equipment Capitalized Internal Use Software and Systems Costs | Computer Software Intangible Asset | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  |  |  | 3 years |  |  |  |  |
Building |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  |  |  | 40 years |  |  |  |  |
Other Capitalized Property Plant and Equipment | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  |  |  | 7 years |  |  |  |  |
Other Capitalized Property Plant and Equipment | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  |  |  | 3 years |  |  |  |  |
Stock Options |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive stock options excluded from computation of earnings per share | shares |  |  |  |  |  |  | 100 | 100 | 100 |  |  |
U.S. Information Solutions |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of revenue from a segment |  |  |  |  |  |  | 44.00% |  |  |  |  |
Accelerated Share Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  | $ 115,000,000 |  |  |  |  |  |  |  |  |
Shares issued under stock and benefit plans, net of minimum tax withholdings (in shares) | shares |  | 20 | 1,400 |  |  |  |  |  |  |  |  |
Treasury Stock, Holdback Provision, Percent |  |  | 10.00% |  |  |  |  |  |  |  |  |
Accelerated Share Repurchase Program, Adjustment |  |  | $ 11,500,000 |  |  |  | $ 11,500,000 | $ (11,500,000) |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | shares |  |  | 3,200 |  |  |  |  |  |  |  |  |
Other Current Assets |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  |  |  | 30,200,000 | 50,800,000.0 | 30,200,000 | 50,800,000.0 |  |  |  |
Other Current Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  |  |  | 30,200,000 | 50,800,000.0 | $ 30,200,000 | $ 50,800,000.0 |  |  |  |
Intersegment Eliminations | International |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of operating segments | segment |  |  |  |  |  |  | 4 |  |  |  |  |
Foreign Exchange Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | AUD |  |  |  |  |  |  |  |  |  |  | AUD 1,000,000,000.0000 |
Foreign currency option, weighted average strike price |  |  |  |  |  |  |  |  |  | $ 0.7091 |  |
Derivative, Loss on Derivative |  |  |  | $ 15,400,000 |  |  |  |  |  |  |  |
Foreign Exchange Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative Asset |  |  |  |  | 14,400,000 |  | $ 14,400,000 |  |  |  |  |
Derivative, Notional Amount | AUD |  |  |  |  |  |  |  |  |  |  |  | AUD 1,000,000,000.0000
Derivative, Gain on Derivative |  |  |  |  | 4,700,000 |  |  |  |  |  |  |
Foreign currency option, weighted average strike price |  |  |  |  | $ 0.7225 |  | $ 0.7225 |  |  |  |  |
Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Cash Received on Hedge |  |  |  |  |  | $ 3,800,000 |  |  |  |  |  |
[1] | (1)The fair value of our call options, designated as economic hedges, are calculated using a valuation model based on the underlying currency exchange rates and related volatility, and are classified within Level 2 of the fair value hierarchy.

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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