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SHARE-BASED AND OTHER COMPENSATION PROGRAMS - Restricted Awards (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Restricted Awards Plan [Line Items]      
Share based compensation expense $ 187 $ 211 $ 192
Restricted Stock Units (RSUs) | Parent      
Restricted Awards Plan [Line Items]      
Vesting period 4 years    
Trading period for cash payment once vested 20 days    
Share based compensation expense $ 154 $ 174 $ 171
Unvested restricted shares and holding units 19,200,000    
Compensation cost not yet recognized $ 39    
Compensation cost, recognition period 2 years 7 months 6 days    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Unvested, Beginning Balance (in shares) 34,010    
Granted (in shares) 13,909    
Vested (in shares) 11,613    
Unvested, Ending Balance (in shares) 36,306 34,010  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Unvested, Beginning Balance, Weighted Average Grant Date Fair Value (in dollars per share) $ 18.43    
Granted, Weighted Average Grant Date Fair Value (in dollars per share) 22.63    
Vested, Weighted Average Grant Date Fair Value (in dollars per share) 23.81    
Unvested, Ending Balance, Weighted Average Grant Date Fair Value (in dollars per share) $ 24.46 $ 18.43  
Restricted Stock Units (RSUs) | Alliance Bernstein      
Restricted Awards Plan [Line Items]      
Vesting period 3 years    
Graded Vesting Period Over Three Years | Restricted Stock Units (RSUs) | Parent      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Granted (in shares) 84,611