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Intangible Assets, net (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	$ 522.1		$ 423.3
Intangible assets subject to amortization, Accumulated Amortization	(135.7)		(110.0)
Intangible assets
Intangible assets, Gross Carrying Amount	1,045.5		865.8
Other intangible assets	7.3
Amortization expense for intangible assets	25.9	21.7
Changes in intangible assets due to foreign currency translation losses	7.6
Summary of estimated aggregated amortization expense for the remaining six months of 2011 and each of the succeeding five years
2011	9.9
2012	39.5
2013	39.4
2014	37.4
2015	35.8
2016	34.2
Covenants not to compete
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	7.4		7.1
Intangible assets subject to amortization, Accumulated Amortization	(6.9)		(6.7)
Intangible assets
Other intangible assets	0.3
Weighted average lives (in years)	5
Loan fees
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	31.2		23.9
Intangible assets subject to amortization, Accumulated Amortization	(17.4)		(14.1)
Customer lists/relationships
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	470.5		379.3
Intangible assets subject to amortization, Accumulated Amortization	(104.9)		(83.7)
Software - internal use
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	8.1		8.1
Intangible assets subject to amortization, Accumulated Amortization	(4.5)		(3.8)
Other
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	4.9		4.9
Intangible assets subject to amortization, Accumulated Amortization	(2.0)		(1.7)
Continental Alloys & Services, Inc. | Trade names
Intangible assets
Other intangible assets	84.3
Trade names
Intangible assets not subject to amortization:
Intangible assets not subject to amortization, Gross Carrying Amount	523.4		442.5
Customer relationships
Intangible assets
Other intangible assets	95.6
Weighted average lives (in years)	10
Continental Alloys & Services, Inc.
Intangible assets
Other intangible assets	$ 180.2

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