v2.4.0.6
SHAREHOLDERS' EQUITY (DETAILS 2) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Common Shares [Member]
Dec. 31, 2011
Series A 7.25% Preferred Shares [Member]
Dec. 31, 2011
Series B 7.5% Preferred Shares [Member]
Class of Stock [Line Items]          
Authorized common shares     800,000,000    
Common stock par value     $ 0.0125    
Preferred shares, value issued $ 500,000 $ 500,000   $ 250,000 $ 250,000
Preferred shares, dividend rate       7.25% 7.50%
Preferred shares, par value       $ 0.0125  
Liquidation preference, per share       $ 25.00 $ 100.00
Redemption price, per share       $ 25.00 $ 100.00
Preferred dividends declared, per share       $ 1.8125 $ 7.50
Preferred dividends paid, per share       $ 1.8125 $ 7.50
Series B floating rate base         3.4525%