Annual report pursuant to Section 13 and 15(d)

DEBT (Details)

v2.4.0.6
DEBT (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
item
Oct. 31, 2012
Revolving Credit Agreement
   
Short-term debt    
Line of credit maximum borrowing capacity $ 175.0 $ 175.0
Number of anniversaries for optional annual extensions of the credit agreement 3  
Period of extension 1 year  
Number of options available for calculating variable interest rate 2  
Letter of credit subfacility
   
Short-term debt    
Line of credit maximum borrowing capacity 75.0 75.0
Letter of credit amount maintained 33.2  
Swingline subfacility
   
Short-term debt    
Line of credit maximum borrowing capacity $ 25.0 $ 25.0