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] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Depositary Shares Issued During Period, New Issues | Ìý | 29,250,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Depositary Share Offering included in Depositary Share Issuance | Ìý | 27,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Number of Shares included in Depositary Share Issuance due to Exercise of | Ìý | 2,250,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Depositary Share Interest in a Share of 7% Series A Mandatory Convertible Preferred Stock, Class A | Ìý | Ìý | 0.025 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Series A Mandatory Convertible Preferred Stock, Class A, Percentage | Ìý | Ìý | 0.07 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Preferred Stock, Liquidation Preference Per Share | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 1,000 | Ìý | Ìý | Ìý | Ìý | Ìý |
Depositary Share Liquidation Preference per Share | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 25 | Ìý |
Number of Common Shares each Share of Manadatory Convertible Stock Converts to on February 1, 2016 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 28.1480 | 34.4840 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Number of Depositary Shares each Share of Manadatory Convertible Stock Converts to on February 1, 2016 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 0.7037 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Common Stock, Par or Stated Value Per Share | Ìý | Ìý | $ 0.125 | Ìý | Ìý | Ìý | $ 0.125 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 0.125 | Ìý | Ìý |
Trading Day Window Determining Number of Common Shares Issuable on Conversion | Ìý | Ìý | 20 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Number of Common Shares Mandatory Convertible Stock Converts to on February 1, 2016 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 20,600,000 | 25,200,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Net proceeds from issuance of Series A, Mandatory Convertible Preferred Stock, Class A | Ìý | $ 709.4 | $ 709.4 | Ìý | $ 0 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Dividends payable, per share | Ìý | Ìý | Ìý | Ìý | Ìý | $ 0.15 | Ìý | $ 0.625 | $ 0.625 | $ 0.625 | $ 0.28 | Ìý | Ìý | Ìý | Ìý | Ìý | $ 13.6111 | Ìý | Ìý | Ìý | $ 0.34 |
Percentage increase in dividends payable | 123.00% | Ìý | Ìý | 76.00% | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Issuance of common shares, public offering (in shares) | Ìý | 10,350,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Common shares, issued (in shares) | Ìý | Ìý | 159,545,469 | Ìý | Ìý | Ìý | 149,195,469 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 9,000,000 | 1,350,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Net proceeds from issuance of common shares | Ìý | $ 285.6 | $ 285.6 | Ìý | $ 0 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Closing price per share (in usd per share) | Ìý | $ 29.00 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 25 | Ìý | Ìý | Ìý |