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Income Tax (Tables)
 3 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]  
Effective Tax Rate

Effective Tax Rate

 

 

 

Three Months Ended

 

 

 

December 31,

 

 

 

2015

 

 

2014

 

 

 

(Dollars in millions)

 

(Benefit) Provision for income taxes

 

$

(5

)

 

$

3

 

Effective tax rate

 

 

74

%

 

 

5

%