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Income Taxes (Details Textuals) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Valuation Allowance [Line Items]        
Net pre-tax income (loss) in which a tax benefit is not recorded $ 6 $ 149 $ 42 $ 184
Settled Litigation | Antitrust Lawsuit, Eaton Corporation        
Valuation Allowance [Line Items]        
Earnings from antitrust lawsuit settlement       210
Recovery of legal expenses       20
Decrease in valuation allowance       $ 79