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DEBT (Details) (USD $)
In Millions, unless otherwise specified
1 Months Ended 1 Months Ended 3 Months Ended
Sep. 30, 2012
7.75% Senior Notes, due November 1, 2013 ("2013 Senior Notes")
Aug. 31, 2012
2.35% Senior Notes due August 15, 2022 (2022 Senior Notes)
Sep. 30, 2012
2.35% Senior Notes due August 15, 2022 (2022 Senior Notes)
Aug. 31, 2012
3.70% Senior Notes due August 15, 2042 (2042 Senior Notes)
Sep. 30, 2012
3.70% Senior Notes due August 15, 2042 (2042 Senior Notes)
Sep. 30, 2012
Commercial paper
Current and long-term debt and available financing            
Senior Notes issued   $ 250.0   $ 250.0    
Interest rate, stated percentage 7.75%   2.35%   3.70%  
Debt issuance price (as a percent)   99.911%   99.567%    
Yield or effective interest rate (as a percent)   2.36%   3.724%    
Repayment of debt 230.1         200.0
Redemption price as a percentage of principal amount of debt (as a percent) 108.00%          
Pre-tax expense on the extinguishment of debt 19.1          
Pro-rata write-off of issuance costs and debt discount on the extinguishment of debt 0.5          
Call premium on extinguishment of debt $ 18.6