Quarterly report pursuant to Section 13 or 15(d)

SHAREHOLDERS' EQUITY (Details)

v3.10.0.1
SHAREHOLDERS' EQUITY (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2018
Feb. 27, 2018
Feb. 22, 2018
Dec. 31, 2017
Equity, Class of Treasury Stock [Line Items]          
Stock Issued During Period, Value, New Issues   $ 495      
Preferred Stock, Shares Outstanding 740,500 740,500     1,098,006
Preferred Stock, Value, Outstanding $ 1,203 $ 1,203      
Preferred Stock, Value, Issued $ 1,203 $ 1,203     $ 1,071
Series A Preferred Stock [Member]          
Equity, Class of Treasury Stock [Line Items]          
Preferred Stock, Dividend Payment Rate, Variable .0850        
Series B Preferred Stock [Member]          
Equity, Class of Treasury Stock [Line Items]          
Preferred Stock, Shares Outstanding 35,500 35,500      
Preferred Stock, Value, Outstanding $ 23 $ 23      
Preferred Stock, Dividend Payment Rate, Variable 3-mo. LIBOR + 270 bps        
Preferred Stock, Redemption Date Jan. 15, 2017        
Preferred Class A [Member]          
Equity, Class of Treasury Stock [Line Items]          
Convertible Preferred Stock, Shares Issued upon Conversion       83.668  
Series C Preferred Stock          
Equity, Class of Treasury Stock [Line Items]          
Preferred Stock, Shares Outstanding 100,000 100,000      
Preferred Stock, Value, Outstanding $ 100 $ 100      
Preferred Stock, Dividend Payment Rate, Variable .05875        
Preferred Stock, Redemption Date Jan. 15, 2022        
Series E Preferred Stock          
Equity, Class of Treasury Stock [Line Items]          
Stock Issued During Period, Value, New Issues   $ 495      
Preferred Stock, Liquidation Preference Per Share     $ 100,000    
Depositary Shares, Liquidation Preference Per Share     $ 1,000    
Preferred Stock, Shares Outstanding 5,000 5,000      
Preferred Stock, Value, Outstanding $ 495 $ 495      
Preferred Stock, Dividend Payment Rate, Variable 0.057        
Preferred Stock, Value, Issued     $ 500    
Depositary Shares, Issued 500,000        
Preferred Stock, Par or Stated Value Per Share     $ 0.01    
Payments of Stock Issuance Costs $ 5        
Preferred Stock, Redemption Date Apr. 15, 2023        
Series D Preferred Stock          
Equity, Class of Treasury Stock [Line Items]          
Preferred Stock, Shares Outstanding 400,000 400,000      
Preferred Stock, Value, Outstanding $ 386 $ 386      
Preferred Stock, Dividend Payment Rate, Variable .0625        
Preferred Stock, Redemption Date Jul. 15, 2021        
Series D Preferred Stock2 [Member]          
Equity, Class of Treasury Stock [Line Items]          
Preferred Stock, Shares Outstanding 200,000 200,000      
Preferred Stock, Value, Outstanding $ 199 $ 199