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Impairment of Long-Lived Assets (Details) - USD ($)
$ in Millions
 3 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Impairment of Long Lived Assets [Line Items]    
Asset Impairment Charges $ 30 $ 16
2018 Restructuring Plan    
Impairment of Long Lived Assets [Line Items]    
Asset Impairment Charges 30  
2018 Restructuring Plan | Global Products    
Impairment of Long Lived Assets [Line Items]    
Asset Impairment Charges 23  
2018 Restructuring Plan | Corporate Segment    
Impairment of Long Lived Assets [Line Items]    
Asset Impairment Charges 5  
2018 Restructuring Plan | Power Solutions    
Impairment of Long Lived Assets [Line Items]    
Asset Impairment Charges $ 2  
2017 Restructuring Plan | Corporate Segment    
Impairment of Long Lived Assets [Line Items]    
Asset Impairment Charges   $ 15