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Identifiable Intangible Assets (Tables)
 12 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill [Table Text Block]
Intangible assets are presented below.
 
September 30,
 
2016
 
2015
 
(in millions)
Capitalized external-use software:
 
 
 
Cost
$
20.9

 
$
17.9

Accumulated amortization
(8.9
)
 
(7.0
)
Net book value
12.0

 
10.9

 
 
 
 
Business combination-related:
 
 
 
Cost:
 
 
 
Finite-lived intangible assets:
 
 
 
Technology
80.3

 
80.3

Customer relationships and other
400.2

 
400.2

Indefinite-lived intangible assets:
 
 
 
Trade names and trademarks
299.6

 
299.6

Goodwill
5.4

 
5.4

 
785.5

 
785.5

Accumulated amortization:
 
 
 
Technology
(75.0
)
 
(74.2
)
Customer relationships and other
(236.5
)
 
(214.9
)
 
(311.5
)
 
(289.1
)
Net book value
474.0

 
496.4

Total intangible assets net book value
$
486.0

 
$
507.3