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Property, net
 12 Months Ended
Sep. 30, 2020
Property, Plant and Equipment [Abstract]  
Property, net Property, net
Property consists of (in millions):
 
 
September 30,
 
 
2020
 
2019
Land
 
$
4.8

 
$
4.1

Buildings and improvements
 
383.0

 
373.8

Machinery and equipment
 
1,220.7

 
1,154.5

Internal-use software
 
506.4

 
489.5

Construction in progress
 
134.4

 
116.0

Total
 
2,249.3

 
2,137.9

Less accumulated depreciation
 
(1,674.9
)
 
(1,566.0
)
Property, net
 
$
574.4

 
$
571.9