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Other Intangible Assets
 12 Months Ended
Sep. 30, 2013
Other Intangible Assets [Abstract]  
Other Intangible Assets
Other Intangible Assets

The gross carrying amount and accumulated amortization relating to intangible assets, excluding goodwill, is as follows (in millions, except weighted avg. life): 
  
 
 
September 30,
 
 
 
2013
 
2012
 
Weighted
Avg. Life
 
Gross  Carrying
Amount
 
Accumulated
Amortization
 
Gross  Carrying
Amount
 
Accumulated
Amortization
Customer relationships
11.8
 
$
876.5

 
$
(230.4
)
 
$
873.9

 
$
(153.6
)
Favorable contracts
11.8
 
23.9

 
(14.3
)
 
42.2

 
(18.8
)
Technology and patents
8.0
 
14.3

 
(4.8
)
 
14.3

 
(3.2
)
Trademarks and tradenames
33.9
 
30.2

 
(9.8
)
 
30.3

 
(6.4
)
Non-compete agreements
N/A
 
—

 
—

 
5.1

 
(4.1
)
License costs
10.0
 
15.9

 
(2.1
)
 
15.9

 
(0.5
)
Total
12.4
 
$
960.8

 
$
(261.4
)
 
$
981.7

 
$
(186.6
)


During fiscal 2013, 2012 and 2011, intangible amortization expense was $80.7 million, $88.9 million and $42.4 million, respectively. Estimated intangible asset amortization expense for the succeeding five fiscal years is as follows (in millions):

Fiscal 2014
$
85.4

Fiscal 2015
81.5

Fiscal 2016
80.9

Fiscal 2017
80.7

Fiscal 2018
80.6