March 31,
2012

December 31,
2011

(Dollars in millions)

Average or actual cost (which approximates current costs):

Finished products

$

228.0

$

220.8

In-process

2,507.0

2,360.6

Raw materials and supplies

798.2

753.7

3,533.2

3,335.1

Less:

Reserve to reduce certain inventories to LIFO basis

(54.6

)

(54.2

)

Progress payments and advances

(417.0

)

(404.3

)

Total

$

3,061.6

$

2,876.6