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DEBT (Details 11) (7.5% Senior Unsecured Notes due 2020, USD $)
In Millions, unless otherwise specified
Feb. 03, 2013
Feb. 01, 2013
Debt disclosures    
Note issued, amount   $ 1,275
Note issued, interest rate 7.50% 7.50%
Threshold percentage for debt that must remain after each redemption 50.00%  
Prior to October 15, 2016
   
Debt disclosures    
Optional prepayment price percentage 100.00%  
2016
   
Debt disclosures    
Optional prepayment price percentage 103.75%  
2017
   
Debt disclosures    
Optional prepayment price percentage 101.875%  
2018 and thereafter
   
Debt disclosures    
Optional prepayment price percentage 100.00%  
Prior to October15, 2015
   
Debt disclosures    
Percentage limit on amount that can be redeemed 35.00%  
Prepayment percentage price as a percent of the principal, with proceeds from certain equity offerings 107.50%