CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net sales	$ 953.6us-gaap_SalesRevenueNet	$ 1,132.6us-gaap_SalesRevenueNet
Cost of sales	537.8us-gaap_CostOfGoodsSold	689.8us-gaap_CostOfGoodsSold
Gross margin	415.8us-gaap_GrossProfit	442.8us-gaap_GrossProfit
Selling, general and administrative expenses	40.1	41.7
Other operating—net	18.2us-gaap_OtherCostAndExpenseOperating	(5.8)us-gaap_OtherCostAndExpenseOperating
Total other operating costs and expenses	58.3us-gaap_OperatingCostsAndExpenses	35.9us-gaap_OperatingCostsAndExpenses
Gain on sale of phosphate business	0us-gaap_GainLossOnSaleOfBusiness	747.1us-gaap_GainLossOnSaleOfBusiness
Equity in earnings of operating affiliates	9.7	15.8
Operating earnings	367.2us-gaap_OperatingIncomeLoss	1,169.8us-gaap_OperatingIncomeLoss
Interest expense	33.9us-gaap_InterestExpense	40.0us-gaap_InterestExpense
Interest income	(0.4)us-gaap_InterestIncomeOther	(0.2)us-gaap_InterestIncomeOther
Other non-operating—net	0us-gaap_OtherNonoperatingIncomeExpense	(0.1)us-gaap_OtherNonoperatingIncomeExpense
Earnings before income taxes and equity in earnings of non-operating affiliates	333.7	1,130.1
Income tax provision	112.7us-gaap_IncomeTaxExpenseBenefit	413.2us-gaap_IncomeTaxExpenseBenefit
Equity in earnings of non-operating affiliates—net of taxes	14.9	3.5
Net earnings	235.9us-gaap_ProfitLoss	720.4us-gaap_ProfitLoss
Less: Net earnings attributable to noncontrolling interest	5.3	11.9
Net earnings attributable to common stockholders	$ 230.6	$ 708.5
Net earnings per share attributable to common stockholders:
Basic (in dollars per share)	$ 4.81us-gaap_EarningsPerShareBasic	$ 12.94us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 4.79us-gaap_EarningsPerShareDiluted	$ 12.90us-gaap_EarningsPerShareDiluted
Weighted average common shares outstanding:
Basic (in shares)	47.9	54.8
Diluted (in shares)	48.1	54.9
Dividends declared per common share (in dollars per share)	$ 1.50	$ 1.00

This item represents the entity's proportionate share for the period of the net income (loss) of its operating investees (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investees at the date of investment.

No definition available.