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Supplementary Financial Statement Information (Tables)
 12 Months Ended
Dec. 31, 2014
Supplementary Financial Statement Information [Abstract]  
Allowance for doubtful accounts
The following shows changes in the allowance for doubtful accounts for the years ended December 31, 2014, 2013 and 2012:
 
2014
 
2013
 
2012
Balance at beginning of year
$
8.1

 
$
9.1

 
$
11.9

Increase (decrease) in allowance
0.9

 
(0.4
)
 
(2.7
)
Receivables written off
—

 
(0.6
)
 
(0.1
)
Balance at end of year
$
9.0

 
$
8.1

 
$
9.1
Inventory, net
Inventories as of December 31, 2014 and 2013, consist of:
 
2014
 
2013
Finished and semi-finished
$
1,053.4

 
$
722.2

Raw materials
494.2

 
260.9

Total cost
1,547.6

 
983.1

Adjustment to state inventories at LIFO value
(375.5
)
 
(396.5
)
Inventory, net
$
1,172.1

 
$
586.6
Change in LIFO reserve
The following shows changes in the LIFO reserve for the years ended December 31, 2014, 2013 and 2012:
 
2014
 
2013
 
2012
Balance at beginning of year
$
396.5

 
$
435.0

 
$
524.0

Change in reserve
(21.0
)
 
(38.5
)
 
(89.0
)
Balance at end of year
$
375.5

 
$
396.5

 
$
435.0
Property, plant and equipment
The Company’s property, plant and equipment balances as of December 31, 2014 and 2013 are as follows:
 
2014
 
2013
Land, land improvements and leaseholds
$
260.7

 
$
249.5

Buildings
466.7

 
403.7

Machinery and equipment
5,571.0

 
5,178.0

Construction in progress
90.0

 
40.7

Total
6,388.4

 
5,871.9

Less accumulated depreciation
(4,175.2
)
 
(3,991.8
)
Property, plant and equipment, net
$
2,213.2

 
$
1,880.1
Other non-current assets
Other non-current assets as of December 31, 2014 and 2013, consist of:
 
2014
 
2013
Investment in AFSG Holdings, Inc.
$
55.6

 
$
55.6

Goodwill
32.8

 
32.8

Deferred tax assets, non-current
70.3

 
76.6

Other
72.2

 
73.3

Other non-current assets
$
230.9

 
$
238.3