Quarterly report pursuant to Section 13 or 15(d)

CAPITAL STOCK (Details)

v2.4.0.6
CAPITAL STOCK (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 1 Months Ended 2 Months Ended 3 Months Ended
Mar. 13, 2012
Feb. 21, 2013
Mar. 31, 2013
Feb. 11, 2013
Mar. 31, 2012
Mar. 01, 2013
Dec. 31, 2012
Dec. 03, 2012
Aug. 31, 2012
Jun. 01, 2012
Mar. 01, 2012
Mar. 31, 2013
Minimum [Member]
Mar. 31, 2013
Maximum [Member]
Feb. 21, 2013
Common Shares [Member]
Feb. 21, 2013
Over Allotment Option [Member]
Mar. 31, 2013
Preferred Class A [Member]
Mar. 20, 2013
Preferred Class A [Member]
Feb. 21, 2013
Preferred Class A [Member]
Mar. 31, 2013
Common Stock from when Mandatory Convertible Preferred Stock Converts on February 1, 2016 [Member]
Mar. 31, 2013
Depositary Share [Member]
Mar. 20, 2013
Depositary Share [Member]
Class of Stock [Line Items]                                          
Depositary Shares Issued During Period, New Issues   29,250,000                                      
Depositary Share Offering included in Depositary Share Issuance   27,000,000                                      
Number of Shares included in Depositary Share Issuance due to Exercise of   2,250,000                                      
Depositary Share Interest in a Share of 7% Series A Mandatory Convertible Preferred Stock, Class A     0.025                                    
Series A Mandatory Convertible Preferred Stock, Class A, Percentage     0.07                                    
Preferred Stock, Liquidation Preference Per Share                               $ 1,000          
Depositary Share Liquidation Preference per Share                                       $ 25  
Number of Common Shares each Share of Manadatory Convertible Stock Converts to on February 1, 2016                       28.1480 34.4840                
Number of Depositary Shares each Share of Manadatory Convertible Stock Converts to on February 1, 2016                       0.7037                  
Common Stock, Par or Stated Value Per Share     $ 0.125       $ 0.125                       $ 0.125    
Trading Day Window Determining Number of Common Shares Issuable on Conversion     20                                    
Number of Common Shares Mandatory Convertible Stock Converts to on February 1, 2016                       20,600,000 25,200,000                
Net proceeds from issuance of Series A, Mandatory Convertible Preferred Stock, Class A   $ 709.4 $ 709.4   $ 0                                
Dividends payable, per share           $ 0.15   $ 0.625 $ 0.625 $ 0.625 $ 0.28           $ 13.6111       $ 0.34
Percentage increase in dividends payable 123.00%     76.00%                                  
Issuance of common shares, public offering (in shares)   10,350,000                                      
Common shares, issued (in shares)     159,545,469       149,195,469             9,000,000 1,350,000            
Net proceeds from issuance of common shares   $ 285.6 $ 285.6   $ 0                                
Closing price per share (in usd per share)   $ 29.00                               $ 25