Quarterly report pursuant to Section 13 or 15(d)

CASH FLOW INFORMATION (Narrative) (Details)

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CASH FLOW INFORMATION (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
May. 01, 2015
Feb. 02, 2015
Nov. 03, 2014
Aug. 01, 2014
May. 01, 2014
Dividends Payable [Line Items]                  
Preferred stock cash dividend $ 0.0 $ 12.8 $ 12.8 $ 25.6          
Preferred Class A [Member]                  
Dividends Payable [Line Items]                  
Dividends payable, per share         $ 17.50 $ 17.50 $ 17.50 $ 17.50 $ 17.50
Preferred stock cash dividend $ 0.0 $ 12.8 $ 12.8 $ 25.6          
Depositary Share [Member]                  
Dividends Payable [Line Items]                  
Dividends payable, per share         $ 0.44 $ 0.44 $ 0.440 $ 0.440 $ 0.440