XML 63 R50.htm IDEA: XBRL DOCUMENT v3.19.2
Contingencies (Tables)
 9 Months Ended
Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]  
Summary of environmental reserves The following are the components of the Superfund and non-Superfund environmental reserves (in millions):
 
Superfund Sites
 
Non-Superfund Sites
 
Total
Beginning Balance at September 30, 2018
$
12

 
$
5

 
$
17

Payments and other
(3
)
 
(2
)
 
(5
)
Accruals
2

 
1

 
3

Ending Balance at June 30, 2019
$
11

 
$
4

 
$
15