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Commitments and Contingencies Purchase Obligations (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Purchase Obligation, Due in Next Twelve Months $ 298.7
Purchase Obligation, Due in Second and Third Year 6.8
Purchase Obligation, Due in Fourth and Fifth Year 3.4
Purchase Obligation, Due after Fifth Year 1.6
Other Commitment, Due in Next Twelve Months $ 216.6