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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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The amount of cash and cash equivalents acquired in a business combination.

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The amount of acquisition cost of a business combination allocated to inventory, including finished goods, work-in-process, and raw materials.

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The amount of acquisition cost of a business combination allocated to receivables.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Acquisitions (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		2 Months Ended		9 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Continental Alloys & Services, Inc.	Aug. 02, 2011 Continental Alloys & Services, Inc. Country Location	Sep. 30, 2011 Lampros Steel, Inc	Dec. 01, 2010 Lampros Steel Plate Distribution, LLC LSI Plate	Sep. 30, 2011 Diamond
Acquisitions
Number of locations of the aquiree entity						12
Number of countries of the aquiree entity						7
Ownership percentage in equity method investment (as a percent)								50.00%
Net sales	$ 2,138.6	$ 1,653.8	$ 6,100.8	$ 4,728.5	$ 88.4		$ 29.9		$ 77.2
Allocation of the total purchase price of Continental to the fair value of the assets acquired and liabilities assumed
Cash					22.8
Accounts receivable					55.7
Inventories					126.7
Property, plant and equipment					30.5
Goodwill					126.3
Intangible assets subject to amortization					95.9
Intangible assets not subject to amortization					84.3
Other current and long-term assets					1.8
Total assets acquired					544.0
Current and long-term debt					(104.8)
Deferred taxes					(58.5)
Other current and long-term liabilities					(51.4)
Total liabilities assumed					(214.7)
Net assets acquired					$ 329.3