Restructuring and Asset Impairment Charges (Tables)
 6 Months Ended
Mar. 31, 2017
Restructuring Costs and Asset Impairment Charges [Abstract]  
Summary of Restructuring and Asset Impairment Charges
The $45 million of charges were recorded in 2016 as follows:
(in millions)
Cost of Sales
 
Selling, General and Administrative Expenses
 
Total
Employee separation costs
$
31

 
$
8

 
$
39

Asset impairment charges
2

 
4

 
6

Restructuring and asset impairment charges
$
33

 
$
12

 
$
45