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Other Current Assets (Tables)
 9 Months Ended
Jun. 30, 2015
Other Current Assets Disclosure [Abstract]  
Summary of other current assets
Other current assets are summarized as follows (in millions):
 
June 30,
2015
 
September 30,
2014
Current deferred income tax assets
$
19

 
$
21

Asbestos-related recoveries (see Note 19)
14

 
15

Deposits and collateral
2

 
4

Prepaid and other
17

 
16

Other current assets
$
52

 
$
56