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Significant Accounting Policies (Details 1) (USD $)
In Millions
Sep. 30, 2011
Sep. 30, 2010
Components of AOCI  
Postretirement Benefit Plans$ (12.1)$ (12.8)
Derivative Instruments Net Losses(47.6)(54.1)
Foreign Currency Translation Adjustments42.056.8
Total$ (17.7)$ (10.1)