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SHAREHOLDERS' EQUITY AND SHARE-BASED COMPENSATION - EARs (Details) - shares
shares in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Equity And Share-Based Compensation    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 1.1  
Stock Appreciation Rights (SARs) [Member]    
Equity And Share-Based Compensation    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Percentage Of Divisions, Maximum 15.00%  
Stock Appreciation Rights (SARs) [Member] | Consumer Analytics Division [Member]    
Equity And Share-Based Compensation    
EARs Outstanding 5.60% 0.00%
EARs Granted 5.60%  
EARs Forfeited 0.00%  
Stock Appreciation Rights (SARs) [Member] | Document Solutions Division [Member]    
Equity And Share-Based Compensation    
EARs Outstanding 5.60% 0.00%
EARs Granted 5.80%  
EARs Forfeited (0.20%)  
Stock Appreciation Rights (SARs) [Member] | Marketplace Solutions Division [Member]    
Equity And Share-Based Compensation    
EARs Outstanding 5.30% 0.00%
EARs Granted 5.30%  
EARs Forfeited 0.00%  
Time-Based Stock Appreciation Rights (SARs) [Member]    
Equity And Share-Based Compensation    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Percentage Of Total Award 25.00%  
Vesting period 4 years  
Performance-Based Stock Appreciation Rights (SARs) [Member]    
Equity And Share-Based Compensation    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Percentage Of Total Award 75.00%  
Maximum    
Equity And Share-Based Compensation    
Share Based Compensation Arrangement by Share Based Payment Award Estimated Forfeiture Rate 40.00%  
Maximum | Restricted Stock [Member]    
Equity And Share-Based Compensation    
Vesting period 4 years  
Minimum    
Equity And Share-Based Compensation    
Share Based Compensation Arrangement by Share Based Payment Award Estimated Forfeiture Rate 0.00%  
Minimum | Restricted Stock [Member]    
Equity And Share-Based Compensation    
Vesting period 1 year