v2.4.0.6
EQUITY (Details) (Common Shares, USD $)
In Millions, except Share data, unless otherwise specified
1 Months Ended 22 Months Ended
Dec. 31, 2011
Y
Mar. 31, 2012
Common Shares
   
Equity Disclosures    
Repurchase of entity issued and outstanding common shares approved by the Board of Directors $ 700  
Extension period of share repurchase program (in years) 1  
Repurchase of common shares   8,647,859
Repurchase of common shares   $ 474