XML 109 R62.htm IDEA: XBRL DOCUMENT v2.4.0.8
FAIR VALUE (Details 4) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Carrying value and estimated fair value of financial instruments    
Long-term debt to parent $ 6.8 $ 7.2
Preferred stock 51.2 51.2
Carrying Amount
   
Carrying value and estimated fair value of financial instruments    
Long-term debt 849.5 871.4
Long-term debt to parent 6.8 7.2
Preferred stock 51.2 51.2
Fair Value
   
Carrying value and estimated fair value of financial instruments    
Long-term debt 879.7 966.2
Long-term debt to parent 7.4 8.2
Preferred stock $ 57.9 $ 52.8