Goodwill and Intangible Assets, Amortization Table (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Goodwill and Intangible Assets (Textuals) [Abstract]
Amortization expense related to definite-lived intangible assets recorded in Fabricated products Segment	$ 0.5	$ 0.5	$ 0.9	$ 1.1
Expected amortization of intangible assets for the remainder of 2012 and the next four years
2012			0.9
2013			1.7
2014			1.6
2015			1.6
2016			1.6
Thereafter			28.9
Total			$ 36.3