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Discontinued Operations, Assets Held for Sale and Divestitures (Tables)
 12 Months Ended
Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]  
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
The table below represents a summary of the operating results for the U.S. Pipe discontinued operations. These operating results do not reflect what they would have been had U.S. Pipe not been classified as discontinued operations.
 
2013
 
2012
 
(in millions)
Net sales
$
—

 
$
197.0

Cost of sales
—

 
197.9

Gross loss
—

 
(0.9
)
Operating expenses (income)
(0.5
)
 
4.2

Operating income (loss)
0.5

 
(5.1
)
Interest expense
—

 
0.3

(Income) loss on sale of discontinued operations
(4.9
)
 
119.7

Income tax benefit
—

 
(21.9
)
Income (loss) from discontinued operations, net of tax
$
5.4

 
$
(103.2
)
The allocations of current income tax expense (benefit) between continuing and discontinued operations are provided below.
 
2014
 
2013
 
2012
 
Continuing operations
 
Continuing operations
 
Discontinued operations
 
Continuing operations
 
Discontinued operations
 
(in millions)
 
 
 
 
 
 
 
 
Expense from operations
$
30.1

 
$
17.5

 
$
2.1

 
$
1.4

 
$
(48.7
)
Valuation allowance-related benefit
(9.6
)
 
(8.5
)
 
(2.1
)
 
6.5

 
26.7

Other items
(2.5
)
 
(0.2
)
 
—

 
—

 
0.1

Income tax expense
$
18.0

 
$
8.8

 
$
—

 
$
7.9

 
$
(21.9
)