Amount of any recovery from third parties that is credited to environmental remediation costs.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 30

-Section 50

-Paragraph 12

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- Definition

The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 45

-Paragraph 28

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The net proceeds or assets obtained in excess of (less than) the net carrying amount of assets recorded, or assets distributed and liabilities assumed less than (in excess of) estimated litigation liability extinguished, in settlement of a litigation matter. Represents (for other than an insurance entity in its normal claims settlement process), the amount of income (expense) recognized in the period to settle pending or threatened litigation and insurance claims.

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Income derived from investments in equity securities representing a distribution of earnings to shareholders by the investee companies.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin.

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No definition available.

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The fair value of notes issued in noncash investing and financing activities.

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Cash received for the settlement of litigation during the current period.

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Amount of the estimated recovery from third parties recorded in the period for an individual site that reduces environmental remediation expense.

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Other Income, net - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended								1 Months Ended		3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Amalgamated Sugar Company LLC [Member]	Dec. 31, 2011 Amalgamated Sugar Company LLC [Member]	Dec. 31, 2010 Amalgamated Sugar Company LLC [Member]	Dec. 31, 2010 Past Environmental Litigation Settlement [Member]	Dec. 31, 2012 NL [Member]	Apr. 30, 2009 NL [Member] Certain Real Property Litigation Settlement [Member]	Oct. 31, 2008 NL [Member] Certain Real Property Litigation Settlement [Member]	Jun. 30, 2012 NL [Member] Certain Real Property Litigation Settlement [Member]	Jun. 30, 2012 NL [Member] Certain Real Property Litigation Settlement [Member]	Dec. 31, 2012 NL [Member] Certain Real Property Litigation Settlement [Member]
Dividends and interest income				$ 25.4	$ 25.4	$ 25.4
Disposal of property and equipment, net	1.5	(0.9)	(1.8)					3.2
Promissory note received										15.0
Interest payable rate										2.75%
Aggregate cash received	15.6								11.8				15.6
Litigation settlement gain	14.7		6.3				6.3				7.8	14.7
Additional recovery of past environmental remediation and related legal costs							4.0
Reduction in accrued environmental remediation and legal settlement costs							$ 2.3