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Shares that could be issued due to the conversion of warrants.

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Percentage of convertible notes tendered in exchange offer.

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Premium over the closing price of the Companys shares of common stock included in strick price

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Strike Price Of Warrants

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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The price per share of the conversion feature embedded in the debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Interest rate stated in the contractual debt agreement.

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Date the debt instrument was issued, in CCYY-MM-DD format.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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Long-Term Debt (Convertible Notes) (Narrative) (Details) (North America [Member], USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended							0 Months Ended		2 Months Ended	9 Months Ended
	Dec. 15, 2009 Subordinated Convertible Notes Due 2029 [Member]	Sep. 28, 2012 Subordinated Convertible Notes Due 2029 [Member]	Dec. 31, 2011 Subordinated Convertible Notes Due 2029 [Member]	Sep. 28, 2012 1.00% Senior Convertible Notes Due 2012 [Member]	Dec. 31, 2011 1.00% Senior Convertible Notes Due 2012 [Member]	Dec. 15, 2009 1.00% Senior Convertible Notes Due 2012 [Member]	Sep. 30, 2007 1.00% Senior Convertible Notes Due 2012 [Member]	Dec. 15, 2009 1.00% Senior Convertible Notes Due 2012 [Member] Phelps Dodge International Corporation (PDIC) [Member]	Nov. 30, 2006 0.875% Convertible Notes Due 2013 [Member]	Dec. 31, 2006 0.875% Convertible Notes Due 2013 [Member]	Sep. 28, 2012 0.875% Convertible Notes Due 2013 [Member]	Dec. 31, 2011 0.875% Convertible Notes Due 2013 [Member]
Debt Instrument [Line Items]
Debt principal amount	$ 429.5					$ 10.6	$ 475.0		$ 355.0
Nonconvertible debt borrowing rate on debt instrument issuance date	12.50%						7.50%		7.35%
Liability component of convertible notes	162.9	429.5	429.5	10.6	10.6	389.7	348.2		230.9		355.0	355.0
Debt discount	266.6	263.4	264.4	0	0.5	74.7	126.8		124.1		25.5	40.6
Debt issuance fees and expenses	14.5
Percentage of convertible notes tendered in exchange offer						97.80%
Amount of convertible notes tendered in exchange offer						464.4
Interest rate				1.00%	1.00%	1.00%			0.875%		0.875%	0.875%
Purchase price, funded by proceeds from notes								707.6
Debt instrument original issuance date									Nov. 30, 2006
Conversion price per share									$ 50.36
Common stock covered under note hedges									7,048,880
Strike price of warrants, per share									$ 76.00		$ 76.00
Premium over the closing price of the companys shares of common stock included in strick price									92.40%
Payments of outstanding debt including accrued interest, under Company's amended credit facility										87.8
Payments for cost of note hedges										124.5
Payments of issuance costs and expenses of related to notes								12.3		9.4
Proceeds from issuance of warrants										80.4
Net increase in cash from receipt of the funds from convertible notes and related payments used for general corporate purposes including acquisitions										$ 213.7