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Schedule II-Valuation and Qualifying Accounts
 12 Months Ended
Sep. 30, 2017
Valuation and Qualifying Accounts [Abstract]  
Schedule II-Valuation and Qualifying Accounts
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended September 30, 2017, 2016, and 2015
 
Balance at
Beginning
of Period
 
Change
Charged to
Expense
 
Other
Changes (A)
 
Balance at
End of Period
(In millions)

Year Ended September 30, 2017
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
0.8

 
0.2

 
—

 
$
1.0

Allowance for deferred tax assets
$
55.6

 
0.9

 
(55.6
)
 
$
0.9

Year Ended September 30, 2016
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
0.8

 
—

 
—

 
$
0.8

Allowance for deferred tax assets
$
77.7

 
(20.8
)
 
(1.3
)
 
$
55.6

Year Ended September 30, 2015
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
2.2

 
0.1

 
(1.5
)
 
$
0.8

Allowance for deferred tax assets
$
83.3

 
(4.9
)
 
(0.7
)
 
$
77.7

(A) 
For 2017, Other Changes primarily includes adjustments related to the Separation.
For 2016 and 2015, Other Changes primarily includes write-offs of uncollectible trade receivable accounts and the impact of foreign currency translation adjustments.