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Restructuring (Tables)
 3 Months Ended
Dec. 31, 2017
Restructuring And Related Activities [Abstract]  
Restructuring Activities and Related Reserves

Details of all restructuring activities and the related reserves during the three months ended December 31, 2017 were as follows:

 

 

Severance

and Employee

Benefits

 

 

Environmental

Remediation

 

 

Other

 

 

Total

 

 

 

(In millions)

 

Reserve at September 30, 2017

 

$

1

 

 

$

2

 

 

$

—

 

 

$

3

 

Charges

 

 

—

 

 

 

—

 

 

 

1

 

 

 

1

 

Cash paid

 

 

—

 

 

 

—

 

 

 

(1

)

 

 

(1

)

Reserve at December 31, 2017

 

$

1

 

 

$

2

 

 

$

—

 

 

$

3