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Other Subsidiary Debt (Details) (Other Debt, Accounts Receivable Securitization Program, USD $)
In Millions, unless otherwise specified
12 Months Ended
Mar. 31, 2012
Sep. 30, 2014
Other Debt | Accounts Receivable Securitization Program
   
Debt Instrument [Line Items]    
Line of Credit Facility, Term 5 years  
Line of Credit Facility, Remaining Borrowing Capacity   $ 100.0