CF Industries (CF) 10-Q 7 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document and Entity Information
Entity Registrant Name	CF Industries Holdings, Inc.
Entity Central Index Key	1324404
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		47,069,448
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net sales	$953.60	$1,132.60
Cost of sales	537.8	689.8
Gross margin	415.8	442.8
Selling, general and administrative expenses	40.1	41.7
Other operating—net	18.2	-5.8
Total other operating costs and expenses	58.3	35.9
Gain on sale of phosphate business	0	747.1
Equity in earnings of operating affiliates	9.7	15.8
Operating earnings	367.2	1,169.80
Interest expense	33.9	40
Interest income	-0.4	-0.2
Other non-operating—net	0	-0.1
Earnings before income taxes and equity in earnings of non-operating affiliates	333.7	1,130.10
Income tax provision	112.7	413.2
Equity in earnings of non-operating affiliates—net of taxes	14.9	3.5
Net earnings	235.9	720.4
Less: Net earnings attributable to noncontrolling interest	5.3	11.9
Net earnings attributable to common stockholders	$230.60	$708.50
Net earnings per share attributable to common stockholders:
Basic (in dollars per share)	$4.81	$12.94
Diluted (in dollars per share)	$4.79	$12.90
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

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$235.90	$720.40
Other comprehensive income (loss):
Foreign currency translation adjustment—net of taxes	-86.3	-16.9
Unrealized gain on securities—net of taxes	0	0.1
Defined benefit plans—net of taxes	5.8	7.4
Total other comprehensive income (loss)	-80.5	-9.4
Comprehensive income	155.4	711
Less: Comprehensive income attributable to noncontrolling interest	5.3	11.9
Comprehensive income attributable to common stockholders	$150.10	$699.10

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$1,778.80	$1,996.60	$3,530.20	$1,710.80
Restricted cash	63.3	86.1
Accounts receivable—net	167.1	191.5
Inventories	267.7	202.9
Deferred income taxes	55.1	84
Prepaid income taxes	27.7	34.8
Other current assets	20	18.6
Total current assets	2,379.70	2,614.50
Property, plant and equipment—net	5,925	5,525.80
Investments in and advances to affiliates	853.5	861.5
Goodwill	2,090.40	2,092.80
Other assets	236.7	243.6
Total assets	11,485.30	11,338.20
Current liabilities:
Accounts payable and accrued expenses	693.2	589.9
Income taxes payable	79.4	16
Customer advances	495.2	325.4
Other current liabilities	43.5	48.4
Total current liabilities	1,311.30	979.7
Long-term debt	4,592.50	4,592.50
Deferred income taxes	783	818.6
Other noncurrent liabilities	380	374.9
Stockholders' equity:
Preferred stock—$0.01 par value, 50,000,000 shares authorized	0	0
Common stock—$0.01 par value, 500,000,000 shares authorized, 2015—49,219,895 shares issued and 2014—49,180,828 shares issued	0.5	0.5
Paid-in capital	1,426.50	1,415.90
Retained earnings	3,334.10	3,175.30
Treasury stock—at cost, 2015—1,658,165 shares and 2014—846,218 shares	-458.9	-222.2
Accumulated other comprehensive loss	-240.3	-159.8	-52	-42.6
Total stockholders' equity	4,061.90	4,209.70
Noncontrolling interest	356.6	362.8
Total equity	4,418.50	4,572.50	5,308.30	5,438.40
Total liabilities and equity	$11,485.30	$11,338.20

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$0.01	$0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	49,219,895	49,180,828
Treasury stock, shares	1,658,165	846,218

CONSOLIDATED_STATEMENTS_OF_EQU

CONSOLIDATED STATEMENTS OF EQUITY (USD $)	Total	Common Stock	Treasury Stock	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total Stockholders' Equity	Noncontrolling Interest
In Millions, unless otherwise specified
Balance at Dec. 31, 2013	$5,438.40	$0.60	($201.80)	$1,594.30	$3,725.60	($42.60)	$5,076.10	$362.30
Increase (decrease) in equity
Net earnings	720.4				708.5		708.5	11.9
Other comprehensive income:
Foreign currency translation adjustment—net of taxes	-16.9					-16.9	-16.9
Unrealized net gain on securities—net of taxes	0.1					0.1	0.1
Defined benefit plans—net of taxes	7.4					7.4	7.4
Comprehensive income	711						699.1	11.9
Purchases of treasury stock	-794		-794				-794
Issuance of $0.01 par value common stock under employee stock plans	9.4		0	9.4	0		9.4
Stock-based compensation expense	3.8			3.8			3.8
Excess tax benefit from stock-based compensation	4.5			4.5			4.5
Cash dividends ($1.50 and $1.00 per share) for the years ended 2015 and 2014 respectively	-55.2				-55.2		-55.2
Distributions declared to noncontrolling interest	-9.6							-9.6
Balance at Mar. 31, 2014	5,308.30	0.6	-995.8	1,612	4,378.90	-52	4,943.70	364.6
Balance at Dec. 31, 2014	4,572.50	0.5	-222.2	1,415.90	3,175.30	-159.8	4,209.70	362.8
Increase (decrease) in equity
Net earnings	235.9				230.6		230.6	5.3
Other comprehensive income:
Foreign currency translation adjustment—net of taxes	-86.3					-86.3	-86.3	0
Unrealized net gain on securities—net of taxes	0
Defined benefit plans—net of taxes	5.8					5.8	5.8
Comprehensive income	155.4						150.1	5.3
Purchases of treasury stock	-236.6		-236.6				-236.6
Acquisition of treasury stock under employee stock plans	-0.1	0	-0.1	0	0		-0.1
Issuance of $0.01 par value common stock under employee stock plans	5.7		0	5.7	0		5.7
Stock-based compensation expense	3.4			3.4			3.4
Excess tax benefit from stock-based compensation	1.5			1.5			1.5
Cash dividends ($1.50 and $1.00 per share) for the years ended 2015 and 2014 respectively	-71.8				-71.8		-71.8
Distributions declared to noncontrolling interest	-11.5							-11.5
Balance at Mar. 31, 2015	$4,418.50	$0.50	($458.90)	$1,426.50	$3,334.10	($240.30)	$4,061.90	$356.60

CONSOLIDATED_STATEMENTS_OF_EQU1

CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Stockholders' Equity [Abstract]
Common stock, par value (in dollars per share)	$0.01	$0.01
Cash Dividends (dollars per share)	$1.50	$1

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating Activities:
Net earnings	$235.90	$720.40
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	115.4	105.3
Deferred income taxes	0.3	17.1
Stock-based compensation expense	3.9	3.8
Excess tax benefit from stock-based compensation	-1.5	-4.5
Unrealized (gain) loss on derivatives	-10.6	21.9
Gain on sale of phosphate business	0	-747.1
Loss on disposal of property, plant and equipment	5.5	0.1
Undistributed earnings of affiliates—net of taxes	-18.4	-11.4
Changes in:
Accounts receivable—net	24.1	32.2
Inventories	-68	-112.3
Accrued and prepaid income taxes	83.6	279.9
Accounts payable and accrued expenses	-10.6	67.4
Customer advances	169.8	356.8
Other—net	1.5	20.4
Net cash provided by operating activities	530.9	750
Investing Activities:
Additions to property, plant and equipment	-444.8	-392.4
Proceeds from sale of property, plant and equipment	3.3	1.3
Proceeds from sale of phosphate business	0	1,353.60
Deposits to restricted cash funds	0	-505
Withdrawals from restricted cash funds	22.8	5.7
Other—net	-10.9	5.8
Net cash (used in) provided by investing activities	-429.6	469
Financing Activities:
Proceeds from long-term borrowings	0	1,494.20
Financing fees	-2	-15.7
Dividends paid on common stock	-71.8	-55.2
Distributions to noncontrolling interest	-11.5	-9.6
Purchases of treasury stock	-236.2	-781.8
Issuances of common stock under employee stock plans	5.7	9.4
Excess tax benefit from stock-based compensation	1.5	4.5
Other—net	0	-43
Net cash (used in) provided by financing activities	-314.3	602.8
Effect of exchange rate changes on cash and cash equivalents	-4.8	-2.4
(Decrease) increase in cash and cash equivalents	-217.8	1,819.40
Cash and cash equivalents at beginning of period	1,996.60	1,710.80
Cash and cash equivalents at end of period	$1,778.80	$3,530.20

Background_and_Basis_of_Presen

Background and Basis of Presentation	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Background and Basis of Presentation	Background and Basis of Presentation
	We are one of the largest manufacturers and distributors of nitrogen fertilizer and other nitrogen products in the world. Our principal customers are cooperatives, independent fertilizer distributors and industrial users. Our principal nitrogen fertilizer products are ammonia, granular urea and urea ammonium nitrate solution (UAN). Our other nitrogen products include ammonium nitrate (AN), diesel exhaust fluid (DEF), urea liquor, and aqua ammonia, which are sold primarily to our industrial customers. Our core market and distribution facilities are concentrated in the midwestern United States and other major agricultural areas of the United States and Canada. We also export nitrogen fertilizer products, primarily from our Donaldsonville, Louisiana manufacturing facility.
	Prior to March 17, 2014, we also manufactured and distributed phosphate fertilizer products. Our principal phosphate products were diammonium phosphate (DAP) and monoammonium phosphate (MAP). On March 17, 2014, we completed the sale of our phosphate mining and manufacturing business (the "Transaction"), which was located in Florida, to The Mosaic Company (Mosaic) for approximately $1.4 billion in cash. The Transaction followed the terms of the definitive agreement executed in October 2013. The accounts receivable and accounts payable pertaining to the phosphate mining and manufacturing business and certain phosphate inventory held in distribution facilities were not sold to Mosaic in the Transaction and were settled in the ordinary course.
	Upon closing the Transaction, we began to supply Mosaic with ammonia produced by our Point Lisas Nitrogen Limited (PLNL) joint venture. The contract to supply ammonia to Mosaic from our PLNL joint venture represents the continuation of a supply practice that previously existed between our former phosphate mining and manufacturing business and other operations of the Company. Prior to March 17, 2014, PLNL sold ammonia to us for use in the phosphate business and the cost was included in our production costs in the phosphate segment. Subsequent to the sale of the phosphate business, we now sell the PLNL-sourced ammonia to Mosaic. The revenue from these sales to Mosaic and the costs to purchase the ammonia from PLNL are now included in our ammonia segment. Our 50% share of the operating results of our PLNL joint venture continues to be included in our equity in earnings of operating affiliates in our consolidated statements of operations. Because of the significance of this continuing supply practice, in accordance with U.S. generally accepted accounting principles (GAAP), the phosphate mining and manufacturing business is not reported as discontinued operations in our consolidated statements of operations. See Note 3—Phosphate Business Disposition for additional information.
	In the third quarter of 2014, we completed certain changes to our reporting structures and as a result, our reporting segments increased to the following five segments: ammonia, granular urea, UAN, other, and phosphate. The phosphate segment reflects the reported results of the phosphate business through March 17, 2014, plus the continuing sales of the phosphate inventory in the distribution network after March 17, 2014. The remaining phosphate inventory was sold in the second quarter of 2014; therefore, the phosphate segment does not have operating results subsequent to that quarter. The phosphate segment will continue to be included until the reporting of comparable period phosphate results ceases. Historical financial results have been restated to reflect the new segment structure on a comparable basis. See Note 18—Segment Disclosures.
	The accompanying unaudited interim consolidated financial statements have been prepared on the same basis as our audited consolidated financial statements for the year ended December 31, 2014, in accordance with U.S. GAAP for interim financial reporting. In the opinion of management, these statements reflect all adjustments, consisting only of normal and recurring adjustments that are necessary for the fair representation of the information for the periods presented. The accompanying unaudited interim consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Operating results for any period presented apply to that period only and are not necessarily indicative of results for any future period.
	The accompanying unaudited interim consolidated financial statements should be read in conjunction with our audited consolidated financial statements and related disclosures included in our 2014 Annual Report on Form 10-K filed with the SEC on February 26, 2015.
	The preparation of the unaudited interim consolidated financial statements requires us to make use of estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the unaudited consolidated financial statements and the reported revenues and expenses for the periods presented. Significant estimates and assumptions are used for, but are not limited to, net realizable value of inventories, environmental remediation liabilities, environmental and litigation contingencies, the cost of customer incentives, useful lives of property and identifiable intangible assets, the assumptions used in the evaluation of potential impairments of property, investments, identifiable intangible assets and goodwill, income tax and valuation reserves, allowances for doubtful accounts receivable, the measurement of the fair values of investments for which markets are not active, assumptions used in the determination of the funded status and annual expense of pension and postretirement employee benefit plans and the assumptions used in the valuation of stock-based compensation awards granted to employees.
	All references to "CF Holdings," "the Company," "we," "us" and "our" refer to CF Industries Holdings, Inc. and its subsidiaries, except where the context makes clear that the reference is only to CF Industries Holdings, Inc. itself and not its subsidiaries. All references to "CF Industries" refer to CF Industries, Inc., a 100% owned subsidiary of CF Industries Holdings, Inc.

New_Accounting_Standards

New Accounting Standards	3 Months Ended
	Mar. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Standards	New Accounting Standards
	In April 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. This ASU requires debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of the related debt liability instead of being presented as an asset. Debt disclosures will include the face amount of the debt liability and the effective interest rate. The update requires retrospective application and represents a change in accounting principle. This ASU is effective for fiscal years beginning after December 15, 2015. Early adoption is permitted for financial statements that have not been previously issued. We are currently evaluating the impact of the adoption of this ASU on our consolidated financial statements.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which supersedes the revenue recognition requirements in Accounting Standards Codification (ASC) 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments. Additionally, information concerning the costs to obtain and fulfill a contract, including assets to be recognized, is to be disclosed. This ASU is effective for interim and annual reporting periods beginning after December 15, 2016. In April 2015, the FASB voted to propose to defer the effective date of this ASU by one year, with early adoption on the original effective date permitted. We are currently evaluating the impact of the adoption of this ASU on our consolidated financial statements.

Phosphate_Business_Disposition

Phosphate Business Disposition	3 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Phosphate Business Disposition	Phosphate Business Disposition
	In March 2014, we completed the sale of our phosphate mining and manufacturing business to Mosaic (the "Transaction") pursuant to the terms of an Asset Purchase Agreement dated as of October 28, 2013 (the "Purchase Agreement"), among CF Industries Holdings, Inc., CF Industries, Inc. and Mosaic for approximately $1.4 billion in cash. During the first quarter of 2014, we recognized pre-tax and after-tax gains on the Transaction of $747.1 million and $461.0 million, respectively. Under the terms of the Purchase Agreement, the accounts receivable and accounts payable pertaining to the phosphate mining and manufacturing business and certain phosphate fertilizer inventory held in distribution facilities were not sold to Mosaic in the Transaction and were settled in the ordinary course. During the fourth quarter of 2014, based on the ordinary course settlement of certain transactions and certain adjustments that were made in accordance with the Purchase Agreement, we increased the recognized pre-tax and after-tax gains on the Transaction to $750.1 million and $462.8 million, respectively.
	Upon closing the Transaction, we began to supply Mosaic with ammonia produced by our PLNL joint venture. The contract to supply ammonia to Mosaic from our PLNL joint venture represents the continuation of a supply practice that previously existed between our former phosphate mining and manufacturing business and other operations of the Company. Prior to March 17, 2014, PLNL sold ammonia to us for use in the phosphate business and the cost was included in our production costs in the phosphate segment. Subsequent to the sale of the phosphate business, we now sell the PLNL-sourced ammonia to Mosaic. The revenue from these sales to Mosaic and the costs to purchase the ammonia from PLNL are now included in our ammonia segment. Our 50% share of the operating results of our PLNL joint venture continues to be included in our equity in earnings of operating affiliates in our consolidated statements of operations.
	The phosphate segment reflects the reported results of the phosphate business through March 17, 2014, plus the continuing sales of the phosphate inventory in the distribution network after March 17, 2014. The remaining phosphate inventory was sold in the second quarter of 2014; therefore, the phosphate segment does not have operating results subsequent to that quarter. The segment will continue to be included until the reporting of comparable period phosphate results ceases.
	The phosphate mining and manufacturing business assets we sold in the Transaction include the Hardee County Phosphate Rock Mine; the Plant City Phosphate Complex; an ammonia terminal, phosphate warehouse and dock at the Port of Tampa; and the site of the former Bartow Phosphate Complex. In addition, Mosaic assumed certain liabilities related to the phosphate mining and manufacturing business, including responsibility for closure, water treatment and long-term maintenance and monitoring of the phosphogypsum stacks at the Plant City and Bartow complexes. Mosaic also received the value of the phosphate mining and manufacturing business's asset retirement obligation trust and escrow funds totaling approximately $200 million. See further discussion related to Florida environmental matters in Note 17—Contingencies.

Net_Earnings_Per_Share

Net Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Net Earnings Per Share	Net Earnings Per Share
	Net earnings per share were computed as follows:
		Three months ended
		March 31,
		2015		2014
		(in millions, except per share amounts)
	Net earnings attributable to common stockholders	$	230.6	$	708.5
	Basic earnings per common share:
	Weighted-average common shares outstanding	47.9		54.8
	Net earnings attributable to common stockholders	$	4.81	$	12.94
	Diluted earnings per common share:
	Weighted-average common shares outstanding	47.9		54.8
	Dilutive common shares—stock options	0.2		0.1
	Diluted weighted-average shares outstanding	48.1		54.9
	Net earnings attributable to common stockholders	$	4.79	$	12.9
	In the computation of diluted earnings per common share, potentially dilutive stock options are excluded if the effect of their inclusion is anti-dilutive. For the three months ended March 31, 2015 and 2014, anti-dilutive stock options were insignificant.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Inventories	Inventories
	Inventories consist of the following:
		March 31,		December 31,
		2015		2014
		(in millions)
	Finished goods	$	244.6	$	179.5
	Raw materials, spare parts and supplies	23.1		23.4
		$	267.7	$	202.9

Property_Plant_and_EquipmentNe

Property, Plant and Equipment-Net	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment, Net [Abstract]
Property, Plant and Equipment-Net	Property, Plant and Equipment—Net
	Property, plant and equipment—net consists of the following:
		March 31,			December 31,
		2015			2014
		(in millions)
	Land	$	47.9		$	48.4
	Machinery and equipment	5,276.00			5,268.70
	Buildings and improvements	159.3			160.7
	Construction in progress(1)	2,998.90			2,559.00
		8,482.10			8,036.80
	Less: Accumulated depreciation and amortization	2,557.10			2,511.00
		$	5,925.00		$	5,525.80
	_______________________________________________________________________________
	(1)	As of March 31, 2015 and December 31, 2014, we had construction in progress that was accrued but unpaid of $389.7 million and $279.0 million, respectively. These amounts included accruals related to our capacity expansion projects of $348.3 million and $244.3 million as of March 31, 2015 and December 31, 2014, respectively.
	As of March 31, 2015 and December 31, 2014, construction in progress includes expenditures of $2.5 billion and $2.0 billion, respectively, related to our capacity expansion projects in Port Neal, Iowa and Donaldsonville, Louisiana.
	Plant turnarounds—Scheduled inspections, replacements and overhauls of plant machinery and equipment at our continuous process manufacturing facilities during a full plant shutdown are referred to as plant turnarounds. The expenditures related to turnarounds are capitalized in property, plant and equipment when incurred. The following is a summary of plant turnaround activity:
		Three months ended
		March 31,
		2015			2014
		(in millions)
	Net capitalized turnaround costs:
	Beginning balance	$	153.2		$	119.8
	Additions	26.5			17.1
	Depreciation	(13.7		)	(18.7		)
	Effect of exchange rate changes	(1.7		)	(0.6		)
	Ending balance	$	164.3		$	117.6
	Scheduled replacements and overhauls of plant machinery and equipment include the dismantling, repair or replacement and installation of various components including piping, valves, motors, turbines, pumps, compressors, heat exchangers and the replacement of catalysts when a full plant shutdown occurs. Scheduled inspections are also conducted during full plant shutdowns, including required safety inspections which entail the disassembly of various components such as steam boilers, pressure vessels and other equipment requiring safety certifications. Internal employee costs and overhead amounts are not considered turnaround costs and are not capitalized.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets
	The following table shows the carrying amount of goodwill by business segment as of March 31, 2015 and December 31, 2014:
		Ammonia			Granular Urea			UAN			Other		Total
		(in millions)
	Balance as of December 31, 2014	$	578.7		$	829.6		$	577		$	107.5	$	2,092.80
	Effect of exchange rate changes	(0.7		)	(1.0		)	(0.7		)	—		(2.4		)
	Balance as of March 31, 2015	$	578		$	828.6		$	576.3		$	107.5	$	2,090.40
	Our identifiable intangibles and carrying values are shown below and are presented in noncurrent other assets on our consolidated balance sheets.
		31-Mar-15									31-Dec-14
		Gross			Accumulated			Net			Gross		Accumulated			Net
		Carrying			Amortization						Carrying		Amortization
		Amount									Amount
		(in millions)
	Intangible assets:
	Customer relationships	$	50		$	(13.9	)	$	36.1		$	50	$	(13.2	)	$	36.8
	TerraCair brand	10			(10.0		)	—			10		(5.0		)	5
	Total intangible assets	$	60		$	(23.9	)	$	36.1		$	60	$	(18.2	)	$	41.8
	Amortization expense of our identifiable intangibles was $5.7 million and $1.0 million for the three months ended March 31, 2015 and 2014, respectively. In early 2015, management approved a plan to discontinue the usage of the TerraCair brand in the sale of DEF. Based on the change in the usage of this brand, the related intangible assets were fully amortized during the quarter.
	Total estimated amortization expense for the remainder of 2015 and each of the five succeeding fiscal years is as follows:
		Estimated
		Amortization
		Expense
		(in millions)
	Remainder of 2015	$	2.1
	2016	2.8
	2017	2.8
	2018	2.8
	2019	2.8
	2020	2.8

Equity_Method_Investments

Equity Method Investments	3 Months Ended
	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Equity Method Investments
	Equity method investments consist of the following:
		March 31,		December 31,
		2015		2014
		(in millions)
	Operating equity method investments	$	376.3	$	377.6
	Non-operating equity method investments	477.2		483.9
	Investments in and advances to affiliates	$	853.5	$	861.5
	Operating Equity Method Investments
	Our equity method investments included in operating earnings consist of: (1) a 50% ownership interest in Point Lisas Nitrogen Limited (PLNL), which operates an ammonia production facility in the Republic of Trinidad and Tobago; and (2) a 50% interest in an ammonia storage joint venture located in Houston, Texas. We include our share of the net earnings from these investments as an element of earnings from operations because these operations provide additional production and storage capacity to our operations and are integrated with our other supply chain and sales activities in the ammonia segment.
	The combined results of operations and financial position for our operating equity method investments are summarized below:
		Three months ended
		March 31,
		2015		2014
		(in millions)
	Summarized statement of operations information:
	Net sales	$	75.2	$	75.2
	Net earnings	$	23	$	24.8
	Equity in earnings of operating affiliates	$	9.7	$	15.8
		March 31,		December 31,
		2015		2014
		(in millions)
	Summarized balance sheet information:
	Current assets	$	91	$	111.2
	Noncurrent assets	137.2		130.5
	Total assets	$	228.2	$	241.7
	Current liabilities	$	25.8	$	39.4
	Noncurrent liabilities	21		22
	Equity	181.4		180.3
	Total liabilities and equity	$	228.2	$	241.7
	The total carrying value of these investments as of March 31, 2015 was $376.3 million, which was $285.6 million more than our share of the affiliates' book value. The excess is primarily attributable to the purchase accounting impact of our acquisition of the investment in PLNL and reflects primarily the revaluation of property, plant and equipment, the value of an exclusive natural gas contract and goodwill. The increased basis for property, plant and equipment and the gas contract is being depreciated over a remaining period of approximately 19 years and 9 years, respectively. Our equity in earnings of operating affiliates is different from our ownership interest in income reported by the unconsolidated affiliates due to amortization of basis differences.
	We have transactions in the normal course of business with PLNL reflecting our obligation to purchase 50% of the ammonia produced by PLNL at current market prices. Our ammonia purchases from PLNL totaled $29.6 million and $34.0 million for the three months ended March 31, 2015 and 2014, respectively.
	Non-Operating Equity Method Investments
	Our non-operating equity method investments consist of: (1) a 50% ownership interest in KEYTRADE AG (Keytrade), a fertilizer trading company headquartered near Zurich, Switzerland; and (2) a 50% ownership interest in GrowHow UK Limited (GrowHow), which operates nitrogen production facilities in the United Kingdom. We account for these investments as non-operating equity method investments, and exclude the net earnings of these investments in earnings from operations since these operations do not directly provide additional capacity to us, nor are these operations integrated within our supply chain.
	The combined results of operations and financial position of our non-operating equity method investments are summarized below:
		Three months ended
		March 31,
		2015		2014
		(in millions)
	Summarized statement of operations information:
	Net sales	$	470.2	$	570.3
	Net earnings	$	35.3	$	22.4
	Equity in earnings of non-operating affiliates—net of taxes	$	14.9	$	3.5
		March 31,		December 31,
		2015		2014
		(in millions)
	Summarized balance sheet information:
	Current assets	$	523.7	$	499.8
	Noncurrent assets	281.5		298.2
	Total assets	$	805.2	$	798
	Current liabilities	$	287.9	$	290.7
	Noncurrent liabilities	174.7		186.9
	Equity	342.6		320.4
	Total liabilities and equity	$	805.2	$	798
	In conjunction with our investment in Keytrade, we provided financing to Keytrade in exchange for subordinated notes that mature on September 30, 2017 and bear interest at LIBOR plus 1.00 percent. As of March 31, 2015 and December 31, 2014, the amount of the outstanding advances to Keytrade on our consolidated balance sheets was $12.4 million. For each of the three-month periods ended March 31, 2015 and 2014, we recognized interest income on advances to Keytrade of approximately $0.1 million. The carrying value of our advances to Keytrade approximates fair value.
	Excluding the advances to Keytrade, the carrying value of our non-operating equity method investments as of March 31, 2015 was $464.8 million, which was $293.5 million more than our share of the affiliates' book value. The excess is primarily attributable to the purchase accounting impact of our acquisition of GrowHow and reflects the revaluation of property, plant and equipment, identifiable intangibles and goodwill. The increased basis for property, plant and equipment and identifiable intangibles is being depreciated over remaining periods of up to 11 years. Our equity in earnings of non-operating affiliates—net of taxes is different than our ownership interest in their net earnings due to the amortization of basis differences.
	As of March 31, 2015, the amount of our consolidated retained earnings that represents our undistributed earnings of non-operating equity method investments is $22.5 million.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	Our cash and cash equivalents and other investments consist of the following:
		31-Mar-15
		Cost Basis			Unrealized		Unrealized			Fair Value
					Gains		Losses
		(in millions)
	Cash	$	62.4		$	—	$	—		$	62.4
	Cash equivalents:
	U.S. and Canadian government obligations	1,691.40			—		—			1,691.40
	Other debt securities	25			—		—			25
	Total cash and cash equivalents	$	1,778.80		$	—	$	—		$	1,778.80
	Restricted cash	63.3			—		—			63.3
	Nonqualified employee benefit trusts	18.4			2.1		—			20.5
		31-Dec-14
		Cost Basis			Unrealized		Unrealized			Fair Value
					Gains		Losses
		(in millions)
	Cash	$	71.3		$	—	$	—		$	71.3
	Cash equivalents:
	U.S. and Canadian government obligations	1,916.30			—		—			1,916.30
	Other debt securities	9			—		—			9
	Total cash and cash equivalents	$	1,996.60		$	—	$	—		$	1,996.60
	Restricted cash	86.1			—		—			86.1
	Nonqualified employee benefit trusts	17.4			2		—			19.4
	Under our short-term investment policy, we may invest our cash balances, either directly or through mutual funds, in several types of investment-grade securities, including notes and bonds issued by governmental entities or corporations. Securities issued by governmental entities include those issued directly by the Federal government; those issued by state, local or other governmental entities; and those guaranteed by entities affiliated with governmental entities.
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
	The following tables present assets and liabilities included in our consolidated balance sheets as of March 31, 2015 and December 31, 2014 that are recognized at fair value on a recurring basis, and indicate the fair value hierarchy utilized to determine such fair value:
		31-Mar-15
		Total Fair			Quoted Prices		Significant			Significant
		Value			in Active		Other			Unobservable
					Markets		Observable			Inputs
					(Level 1)		Inputs			(Level 3)
							(Level 2)
		(in millions)
	Cash equivalents	$	1,716.40		$	1,716.40	$	—		$	—
	Restricted cash	63.3			63.3		—			—
	Derivative assets	6.2			—		6.2			—
	Nonqualified employee benefit trusts	20.5			20.5		—			—
	Derivative liabilities	(43.5		)	—		(43.5		)	—
		31-Dec-14
		Total Fair			Quoted Prices		Significant			Significant
		Value			in Active		Other			Unobservable
					Markets		Observable			Inputs
					(Level 1)		Inputs			(Level 3)
							(Level 2)
		(in millions)
	Cash equivalents	$	1,925.30		$	1,925.30	$	—		$	—
	Restricted cash	86.1			86.1		—			—
	Derivative assets	0.5			—		0.5			—
	Nonqualified employee benefit trusts	19.4			19.4		—			—
	Derivative liabilities	(48.4		)	—		(48.4		)	—
	Cash Equivalents
	As of March 31, 2015 and December 31, 2014, our cash equivalents consisted primarily of U.S. and Canadian government obligations and money market mutual funds that invest in U.S. government obligations and other investment-grade securities.
	Restricted Cash
	We maintain a cash account for which the use of the funds is restricted. The restricted cash account as of March 31, 2015 and December 31, 2014 was put in place to satisfy certain requirements included in our engineering and procurement services contract for our capacity expansion projects. Under the terms of this contract, we are required to grant an affiliate of ThyssenKrupp Industrial Solutions, formerly ThyssenKrupp Uhde, a security interest in a restricted cash account and maintain a cash balance in that account equal to the cancellation fees for procurement services and equipment that would arise if we were to cancel the projects.
	Derivative Instruments
	The derivative instruments that we use are primarily natural gas options, natural gas fixed price swaps and foreign currency forward contracts traded in the over-the-counter (OTC) markets with multi-national commercial banks, other major financial institutions and large energy companies. The natural gas derivatives are traded in months forward and settlements are scheduled to coincide with anticipated gas purchases during those future periods. The foreign currency derivative contracts held are for the exchange of a specified notional amount of currencies at specified future dates coinciding with anticipated foreign currency cash outflows associated with our Donaldsonville, Louisiana and Port Neal, Iowa capacity expansion projects. The natural gas derivative contracts settle using primarily NYMEX futures prices. To determine the fair value of these instruments, we use quoted market prices from NYMEX and standard pricing models with inputs derived from or corroborated by observable market data such as forward curves supplied by an industry-recognized unrelated third party. The currency derivatives are valued based on quoted market prices supplied by an industry-recognized independent third party. See Note 14—Derivative Financial Instruments for additional information.
	Nonqualified Employee Benefit Trusts
	We maintain trusts associated with certain deferred compensation related nonqualified employee benefits. The investments are accounted for as available-for-sale securities. The fair values of the trusts are based on daily quoted prices representing the net asset values (NAV) of the investments. These trusts are included on our consolidated balance sheets in other assets.
	Financial Instruments
	The carrying amounts and estimated fair values of our financial instruments are as follows:
		31-Mar-15					31-Dec-14
		Carrying			Fair Value		Carrying			Fair Value
		Amount					Amount
	(in millions)
Long-term debt	$	4,592.50		$	5,086.60	$	4,592.50		$	4,969.30
The fair value of our long-term debt was based on quoted prices for identical or similar liabilities in markets that are not active or valuation models in which all significant inputs and value drivers are observable and, as a result, are classified as Level 2 inputs.
The carrying amounts of cash and cash equivalents, as well as instruments included in other current assets and other current liabilities that meet the definition of financial instruments, approximate fair values because of their short-term maturities.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	Our income tax provision for the three months ended March 31, 2015 was $112.7 million on pre-tax income of $333.7 million, or an effective tax rate of 33.8%, compared to an income tax provision of $413.2 million on pre-tax income of $1,130.1 million, or an effective tax rate of 36.6%, for the three months ended March 31, 2014. Our effective tax rate was lower in the three months ended March 31, 2015 principally due to the higher effective tax rate on the gain related to the sale of our phosphate mining and manufacturing business in March 2014.
	Our effective tax rate based on pre-tax earnings differs from our effective tax rate based on pre-tax earnings exclusive of the noncontrolling interest, as our consolidated income tax provision does not include a tax provision on the earnings attributable to the noncontrolling interest in Terra Nitrogen Company, L.P. (TNCLP), which does not record an income tax provision.
	Our unrecognized tax benefits are $135.8 million as of March 31, 2015 of which approximately $97.0 million would impact our effective tax rate if these unrecognized tax benefits were to be recognized in the future.

Interest_Expense

Interest Expense	3 Months Ended
	Mar. 31, 2015
Interest Expense [Abstract]
Interest Expense	Interest Expense
	Details of interest expense are as follows:
		Three months ended
		March 31,
		2015			2014
		(in millions)
	Interest on borrowings(1)	$	63.5		$	47.9
	Fees on financing agreements(1)	1.4			3.5
	Interest on tax liabilities	0.5			1.5
	Interest capitalized	(31.5		)	(12.9		)
		$	33.9		$	40
	_______________________________________________________________________________
	(1)	See Note 12—Financing Agreements for additional information.

Financing_Agreements

Financing Agreements	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Financing Agreements	Financing Agreements
	Credit Agreement
	CF Holdings, as a guarantor, and CF Industries, as borrower, entered into a $500.0 million senior unsecured credit agreement, dated May 1, 2012 (the Credit Agreement), which provided for a revolving credit facility of up to $500.0 million with a maturity of five years. On April 22, 2013, the Credit Agreement was amended and restated to increase the credit facility from $500.0 million to $1.0 billion and extend its maturity to May 1, 2018. On March 20, 2015, the Credit Agreement was further amended and restated to increase the credit facility from $1.0 billion to $1.5 billion and extend its maturity to March 20, 2020.
	Borrowings under the Credit Agreement bear interest at a variable rate based on an applicable margin over LIBOR or a base rate and may be used for working capital, capital expenditures, acquisitions, share repurchases and other general corporate purposes. The Credit Agreement requires that the Company maintain a minimum interest coverage ratio and not exceed a maximum total leverage ratio, and includes other customary terms and conditions, including customary events of default and covenants.
	All obligations under the Credit Agreement are unsecured. Currently, CF Holdings is the only guarantor of CF Industries' obligations under the Credit Agreement. Certain of CF Industries' domestic subsidiaries would be required to become guarantors under the Credit Agreement if such subsidiary were to guarantee other debt of the Company or CF Industries in excess of $450.0 million. Currently, no such subsidiary guarantees any debt.
	As of March 31, 2015, there was $1,495.1 million of available credit under the Credit Agreement (net of outstanding letters of credit of $4.9 million), and there were no borrowings outstanding as of March 31, 2015 or December 31, 2014.
	Senior Notes
	Long-term debt presented on our consolidated balance sheets as of March 31, 2015 and December 31, 2014 consisted of the following:
		March 31,		December 31,
		2015		2014
		(in millions)
	Unsecured senior notes:
	6.875% due 2018	$	800	$	800
	7.125% due 2020	800		800
	3.450% due 2023	749.4		749.4
	5.150% due 2034	746.2		746.2
	4.950% due 2043	748.8		748.8
	5.375% due 2044	748.1		748.1
		4,592.50		4,592.50
	Less: Current portion	—		—
	Net long-term debt	$	4,592.50	$	4,592.50
	Under the indentures (including the applicable supplemental indentures) governing the senior notes identified in the table above, each series of senior notes is guaranteed by CF Holdings. Interest is paid semiannually and the senior notes are redeemable at our option, in whole at any time or in part from time to time, at specified make-whole redemption prices. The indentures governing the senior notes contain customary events of default and covenants that limit, among other things, the ability of CF Holdings and its subsidiaries, including CF Industries, to incur liens on certain properties to secure debt.
	If a Change of Control occurs together with a Ratings Downgrade (as both terms are defined under the indentures governing the senior notes), CF Industries would be required to offer to repurchase each series of senior notes at a price equal to 101% of the principal amount thereof, plus accrued and unpaid interest. In addition, in the event that a subsidiary of ours, other than CF Industries, becomes a borrower or a guarantor under the Credit Agreement (or any renewal, replacement or refinancing thereof), such subsidiary would be required to become a guarantor of the senior notes, provided that such requirement will no longer apply with respect to the senior notes due in 2023, 2034, 2043 and 2044 following the repayment of the senior notes due in 2018 and 2020 or the subsidiaries of ours, other than CF Industries, otherwise becoming no longer subject to such a requirement to guarantee the senior notes due in 2018 and 2020.

Noncontrolling_Interests

Noncontrolling Interests	3 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Noncontrolling Interests	Noncontrolling Interest
	Terra Nitrogen Company, L.P. (TNCLP) is a master limited partnership that owns a nitrogen manufacturing facility in Verdigris, Oklahoma. We own an aggregate 75.3% of TNCLP through general and limited partnership interests. Outside investors own the remaining 24.7% of the limited partnership. For financial reporting purposes, the assets, liabilities and earnings of the partnership are consolidated into our financial statements. The outside investors' limited partnership interests in the partnership are recorded in noncontrolling interest in our consolidated financial statements. The noncontrolling interest represents the noncontrolling unitholders' interest in the earnings and equity of TNCLP. An affiliate of CF Industries is required to purchase all of TNCLP's fertilizer products at market prices as defined in the Amendment to the General and Administrative Services and Product Offtake Agreement, dated September 28, 2010.
	TNCLP makes cash distributions to the general and limited partners based on formulas defined within its Agreement of Limited Partnership. Cash available for distribution is defined in the agreement generally as all cash receipts less all cash disbursements, less certain reserves (including reserves for future operating and capital needs) established as the general partner determines in its reasonable discretion to be necessary or appropriate. Changes in working capital affect available cash, as increases in the amount of cash invested in working capital items (such as increases in inventory and decreases in accounts payable) reduce available cash, while declines in the amount of cash invested in working capital items increase available cash. Cash distributions to the limited partners and general partner vary depending on the extent to which the cumulative distributions exceed certain target threshold levels set forth in the Agreement of Limited Partnership.
	In each of the applicable quarters of 2015 and 2014, the minimum quarterly distributions were satisfied, which entitled us, as the general partner, to receive increased distributions on our general partner interests as provided for in the Agreement of Limited Partnership. The earnings attributed to our general partner interest in excess of the threshold levels for the three months ended March 31, 2015 and 2014, were $20.3 million and $40.5 million, respectively.
	As of March 31, 2015, Terra Nitrogen GP Inc. (TNGP), the general partner of TNCLP (and an indirect wholly-owned subsidiary of CF Industries), and its affiliates owned 75.3% of TNCLP's outstanding units. When not more than 25% of TNCLP's issued and outstanding units are held by non-affiliates of TNGP, TNCLP, at TNGP's sole discretion, may call, or assign to TNGP or its affiliates, TNCLP's right to acquire all such outstanding units held by non-affiliated persons. If TNGP elects to acquire all outstanding units, TNCLP is required to give at least 30 but not more than 60 days' notice of TNCLP's decision to purchase the outstanding units. The purchase price per unit will be the greater of (1) the average of the previous 20 trading days' closing prices as of the date five days before the purchase is announced or (2) the highest price paid by TNGP or any of its affiliates for any unit within the 90 days preceding the date the purchase is announced.
	A reconciliation of the beginning and ending balances of TNCLP's noncontrolling interest and distributions payable to noncontrolling interests in our consolidated balance sheets is provided below.
		Three months ended
		March 31,
		2015			2014
		(in millions)
	Noncontrolling interest:
	Beginning balance	$	362.8		$	362.3
	Earnings attributable to noncontrolling interest	5.3			11.9
	Declaration of distributions payable	(11.5		)	(9.6		)
	Ending balance	$	356.6		$	364.6
	Distributions payable to noncontrolling interest:
	Beginning balance	$	—		$	—
	Declaration of distributions payable	11.5			9.6
	Distributions to noncontrolling interest	(11.5		)	(9.6		)
	Ending balance	$	—		$	—

Derivative_Financial_Instrumen

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments
	We use derivative financial instruments to reduce our exposure to changes in commodity prices and foreign currency exchange rates.
	Commodity Price Risk Management
	Natural gas is the largest and most volatile component of the manufacturing cost for nitrogen-based products. We manage the risk of changes in natural gas prices primarily through the use of derivative financial instruments covering periods of generally less than 18 months. The derivatives that we use are primarily natural gas options and natural gas fixed price swaps traded in the OTC markets. These natural gas derivatives settle using primarily a NYMEX futures price index, which represents the basis for fair value at any given time. We enter into natural gas derivative contracts with respect to natural gas to be consumed by us in the future, and settlements of those derivative contracts are scheduled to coincide with our anticipated purchases of natural gas used to manufacture nitrogen products during those future periods. We use natural gas derivatives as an economic hedge of natural gas price risk, but without the application of hedge accounting. As a result, changes in fair value of these contracts are recorded in earnings.
	As of March 31, 2015 and December 31, 2014, we had open natural gas derivative contracts for 77.4 million MMBtus and 58.7 million MMBtus, respectively. For the three months ended March 31, 2015, we used derivatives to cover approximately 93% of our natural gas consumption.
	Foreign Currency Exchange Rates
	In the fourth quarter of 2012, our Board of Directors authorized a project to construct new ammonia and urea/UAN plants at our Donaldsonville, Louisiana complex and new ammonia and urea plants at our Port Neal, Iowa complex. A portion of the capacity expansion project costs are euro-denominated. In order to manage our exposure to changes in the euro to U.S. dollar currency exchange rates, we have hedged our projected euro-denominated payments through the fourth quarter of 2015 using foreign currency forward contracts. Certain of these contracts were originally designated as cash flow hedges.
	As of December 31, 2013, we de-designated the remaining cash flow hedges related to our capacity expansion projects. As of March 31, 2015 and December 31, 2014, the notional amount of our open foreign currency derivatives was €144.0 million and €209.0 million, respectively. None of these open foreign currency derivatives were designated as hedging instruments for accounting purposes.
	As of March 31, 2015, the remaining pre-tax accumulated other comprehensive income balance of $7.4 million related to the de-designated cash flow hedges is expected to be reclassified into income over the depreciable lives of the property, plant and equipment associated with the capacity expansion projects. We expect that the amounts to be reclassified within the next twelve months will be insignificant. See Note 16—Accumulated Other Comprehensive Income (Loss), for further information.
	The effect of derivatives in our consolidated statements of operations is shown in the table below. None of our derivatives were designated as hedging instruments.
		Unrealized gain (loss) recognized in income
				Three months ended
				March 31,
		Location		2015				2014
				(in millions)
	Natural gas derivatives	Cost of sales		$	28.7			$	(22.6	)
	Foreign exchange contracts	Other operating—net		(12.3		)		(4.9		)
	Unrealized gains (losses) recognized in income			$	16.4			$	(27.5	)
		Gain (loss) in income
		Three months ended
		March 31,
	All Derivatives	2015				2014
		(in millions)
	Unrealized gains (losses)	$	16.4			$	(27.5	)
	Realized (losses) gains	(43.7		)		62
	Net derivative (losses) gains	$	(27.3	)		$	34.5
	The fair values of derivatives on our consolidated balance sheets are shown below. As of March 31, 2015 and December 31, 2014, none of our derivative instruments were designated as hedging instruments. For additional information on derivative fair values, see Note 9—Fair Value Measurements.
		Asset Derivatives										Liability Derivatives
		Balance Sheet		31-Mar-15				31-Dec-14				Balance Sheet	31-Mar-15			31-Dec-14
		Location										Location
				(in millions)									(in millions)
	Foreign exchange contracts	Other current assets		$	1.2			$	—			Other current liabilities	$	(36.0	)	$	(22.4	)
	Foreign exchange contracts	Other noncurrent assets		—				—				Other noncurrent liabilities	—			—
	Natural gas derivatives	Other current assets		5				0.5				Other current liabilities	(7.5		)	(26.0		)
	Natural gas derivatives	Other noncurrent assets		—				—				Other noncurrent liabilities	—			—
	Total derivatives			$	6.2			$	0.5				$	(43.5	)	$	(48.4	)
	Current / Noncurrent totals
		Other current assets		$	6.2			$	0.5			Other current liabilities	$	(43.5	)	$	(48.4	)
		Other noncurrent assets		—				—				Other noncurrent liabilities	—			—
	Total derivatives			$	6.2			$	0.5				$	(43.5	)	$	(48.4	)
	As of March 31, 2015 and December 31, 2014, the aggregate fair value of the derivative instruments with credit-risk-related contingent features in a net liability position was $38.3 million and $47.1 million, respectively, which also approximates the fair value of the maximum amount of additional collateral that would need to be posted or assets needed to settle the obligations if the credit-risk-related contingent features were triggered at the reporting dates. At both March 31, 2015 and December 31, 2014, we had no cash collateral on deposit with counterparties for derivative contracts. The credit support documents executed in connection with certain of our International Swaps and Derivatives Association (ISDA) agreements generally provide us and our counterparties the right to set off collateral against amounts owing under the ISDA agreements upon the occurrence of a default or a specified termination event.
	The following table presents amounts relevant to offsetting of our derivative assets and liabilities as of March 31, 2015 and December 31, 2014:
		Amounts				Gross amounts not offset in consolidated balance sheets
		presented in
		consolidated
		balance
		sheets(1)				Financial				Cash			Net
						instruments				collateral			amount
										received
										(pledged)
		(in millions)
	31-Mar-15
	Total derivative assets	$	6.2			$	5.8			$	—		$	0.4
	Total derivative liabilities	43.5				5.8				—			37.7
	Net liabilities	$	(37.3	)		$	—			$	—		$	(37.3	)
	31-Dec-14
	Total derivative assets	$	0.5			$	0.5			$	—		$	—
	Total derivative liabilities	48.4				0.5				—			47.9
	Net liabilities	$	(47.9	)		$	—			$	—		$	(47.9	)
	_______________________________________________________________________________
	(1)	We report the fair values of our derivative assets and liabilities on a gross basis on our consolidated balance sheets. As a result, the gross amounts recognized and net amounts presented are the same.
	We do not believe the contractually allowed netting, close-out netting or setoff of amounts owed to, or due from, the counterparties to our ISDA agreements would have a material effect on our financial position.

Treasury_Stock

Treasury Stock	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Treasury Stock	Treasury Stock
	Our Board of Directors has authorized certain programs to repurchase shares of our common stock. Each of these programs is consistent in that repurchases may be made from time to time in the open market, through privately-negotiated transactions, through block transactions or otherwise. The manner, timing and amount of repurchases are determined by our management based on the evaluation of market conditions, stock price and other factors.
	In the third quarter of 2012, our Board of Directors authorized a program to repurchase up to $3.0 billion of the common stock of CF Holdings through December 31, 2016 (the 2012 Program). The repurchases under this program were completed in the second quarter of 2014. On August 6, 2014, our Board of Directors authorized a program to repurchase up to $1.0 billion of the common stock of CF Holdings through December 31, 2016 (the 2014 Program).
	The following table summarizes the share repurchases under the 2014 Program and the 2012 Program:
		2014 Program			2012 Program
		Shares	Amounts		Shares	Amounts
		(in millions)
	Shares repurchased as of December 31, 2013	—	$	—	7.3	$	1,449.30
	Shares repurchased in 2014:
	First quarter	—	$	—	3.2	$	793.9
	Second quarter	—	—		3.1	756.8
	Third quarter	—	—		—	—
	Fourth quarter	1.4	372.8		—	—
	Total shares repurchased in 2014	1.4	372.8		6.3	1,550.70
	Shares repurchased as of December 31, 2014	1.4	$	372.8	13.6	$	3,000.00
	Shares repurchased in 2015:
	First quarter	0.8	$	236.6
	Shares repurchased as of March 31, 2015	2.2	$	609.4
	As of March 31, 2015 and December 31, 2014, the amount of shares repurchased that was accrued but unpaid was $29.6 million and $29.1 million, respectively.
	As of March 31, 2015 and December 31, 2014, we held in treasury approximately 1.7 million and 0.8 million shares of repurchased stock, respectively.
	See Note 20—Subsequent Event for a discussion of shares repurchased subsequent to March 31, 2015.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss)
	Changes to accumulated other comprehensive income (AOCI) are as follows:
		Foreign				Unrealized				Unrealized		Defined			Accumulated
		Currency				Gain (Loss)				Gain (Loss)		Benefit			Other
		Translation				on				on		Plans			Comprehensive
		Adjustment				Securities				Derivatives					Income (Loss)
		(in millions)
	Balance as of December 31, 2013	$	31.9			$	0.6			$	6.5	$	(81.6	)	$	(42.6	)
	Unrealized gain	—				0.1				—		—			0.1
	Reclassification to earnings	—				(0.1		)		—		0.5			0.4
	Gain arising during the period	—				—				—		2.7			2.7
	Effect of exchange rate changes and deferred taxes	(16.9		)		0.1				—		4.2			(12.6		)
	Balance as of March 31, 2014	$	15			$	0.7			$	6.5	$	(74.2	)	$	(52.0	)
	Balance as of December 31, 2014	$	(40.5	)		$	0.8			$	4.7	$	(124.8	)	$	(159.8	)
	Unrealized gain	—				0.1				—		—			0.1
	Reclassification to earnings	—				(0.1		)		—		1.4			1.3
	Effect of exchange rate changes and deferred taxes	(86.3		)		—				—		4.4			(81.9		)
	Balance as of March 31, 2015	$	(126.8	)		$	0.8			$	4.7	$	(119.0	)	$	(240.3	)
	Reclassifications out of AOCI during the three months ended March 31, 2015 and 2014 were as follows:
			Three months ended
			March 31,
			2015				2014
			(in millions)
	Unrealized (Gain) Loss on Securities
	Available-for-sale securities(1)		$	(0.1	)		$	(0.1	)
	Total before tax		(0.1		)		(0.1		)
	Tax effect		—				—
	Net of tax		$	(0.1	)		$	(0.1	)
	Defined Benefit Plans
	Amortization of prior service (benefit) cost(2)		$	(0.3	)		$	—
	Amortization of net loss(2)		1.7				0.5
	Total before tax		1.4				0.5
	Tax effect		(0.5		)		(0.2		)
	Net of tax		$	0.9			$	0.3
	Total reclassifications for the period		$	0.8			$	0.2
	_______________________________________________________________________________
	(1)	Represents the amount that was reclassified into interest income.
	(2)	These components are included in the computation of net periodic pension cost and were reclassified from AOCI into cost of sales and selling, general and administrative expenses.

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies
	Litigation
	West Fertilizer Co.
	On April 17, 2013, there was a fire and explosion at the West Fertilizer Co. fertilizer storage and distribution facility in West, Texas. According to published reports, 15 people were killed and approximately 200 people were injured in the incident, and the fire and explosion damaged or destroyed a number of homes and buildings around the facility. We have been named as defendants along with other companies in lawsuits filed in 2013 and 2014 in the District Court of McLennan County, Texas by the City of West, individual residents of the County and other parties seeking recovery for damages allegedly sustained as a result of the explosion. The cases have been consolidated for discovery and pretrial proceedings before Judge Jim Meyer in the District Court of McLennan County under the caption "In re: West Explosion Cases." The two-year statute of limitations expired on April 17, 2015. As of that date, over 400 plaintiffs had filed claims, including at least 9 entities, 325 individuals, and 80 insurance companies. Plaintiffs allege various theories of negligence, strict liability, breach of warranty and assault under Texas law. Although we do not own or operate the facility or directly sell our products to West Fertilizer Co., products we have manufactured and sold to others have been delivered to the facility and may have been stored at the West facility at the time of the incident.
	Fact and expert witness discovery continues about the circumstances surrounding the April 17, 2013 fire and explosion. On April 2, 2015, the Court entered a revised scheduling order requiring the parties to file dispositive Motions for Summary Judgment by May 15, 2015, with subsequent briefing and hearings to occur into August 2015. Any mediation between the parties must be completed by August 17, 2015. The first three cases are scheduled to begin trial on October 12, 2015. We believe we have strong legal and factual defenses and intend to continue defending ourselves vigorously in the pending lawsuits.
	Other Litigation
	From time to time, we are subject to ordinary, routine legal proceedings related to the usual conduct of our business, including proceedings regarding public utility and transportation rates, environmental matters, taxes and permits relating to the operations of our various plants and facilities. Based on the information available as of the date of this filing, we believe that the ultimate outcome of these routine matters will not have a material adverse effect on our consolidated financial position, results of operations or cash flows.
	Environmental
	Louisiana Environmental Matters
	Clean Air Act—Section 185 Fee
	Our Donaldsonville nitrogen complex is located in a five-parish region near Baton Rouge, Louisiana that, as of 2005, was designated as being in "severe" nonattainment with respect to the national ambient air quality standard (NAAQS) for ozone (the 1-hour ozone standard) pursuant to the Federal Clean Air Act (the Act). Section 185 of the Act requires states, in their state implementation plans, to levy a fee (Section 185 fee) on major stationary sources (such as the Donaldsonville complex) located in a severe nonattainment area that did not meet the 1-hour ozone standard by November 30, 2005. The fee was to be assessed for each calendar year (beginning in 2006) until the area achieved compliance with the ozone NAAQS.
	Prior to the imposition of Section 185 fees, the Environmental Protection Agency (EPA) adopted a new ozone standard (the 8-hour ozone standard) and rescinded the 1-hour ozone standard. The Baton Rouge area was designated as a "moderate" nonattainment area with respect to the 8-hour ozone standard. However, because Section 185 fees had never been assessed prior to the rescission of the 1-hour ozone standard (rescinded prior to the November 30, 2005 ozone attainment deadline), the EPA concluded in a 2004 rulemaking implementing the 8-hour ozone standard that the Act did not require states to assess Section 185 fees. As a result, Section 185 fees were not assessed against us and other companies located in the Baton Rouge area.
	In 2006, the federal D.C. Circuit Court of Appeals rejected the EPA's position and held that Section 185 fees were controls that must be maintained and fees should have been assessed under the Act. In January 2008, the U.S. Supreme Court declined to accept the case for review, making the appellate court's decision final.
	In July 2011, the EPA approved a revision to Louisiana's air pollution program that eliminated the requirement for Baton Rouge area companies to pay Section 185 fees, based on Baton Rouge's ultimate attainment of the 1-hour standard through permanent and enforceable emissions reductions. EPA's approval of the Louisiana air program revision became effective on August 8, 2011. However, a recent decision by the federal D.C. Circuit Court of Appeals struck down a similar, but perhaps distinguishable, EPA guidance document regarding alternatives to Section 185 fees. At this time, the viability of EPA's approval of Louisiana's elimination of Section 185 fees is uncertain. Regardless of the approach ultimately adopted by the EPA, we expect that it is likely to be challenged by the environmental community, the states, and/or affected industries. Therefore, the costs associated with compliance with the Act cannot be determined at this time, and we cannot reasonably estimate the impact on our consolidated financial position, results of operations or cash flows.
	Furthermore, the area has seen significant reductions in ozone levels, attributable to federal and state regulations and community involvement. Preliminary ozone design values computed for the Baton Rouge nonattainment area suggest the area has achieved attainment with the 2008 8-hour ozone standard. A determination from EPA was issued on April 4, 2014 indicating that the Baton Rouge area is currently attaining the 2008 8-hour ozone standard. The determination is based on a recent review of air quality data from 2011-2013. Additional revisions to the ozone NAAQS, like the proposed rule that would strengthen the ozone standard that was proposed on December 17, 2014, may affect the longevity and long-term consequences of this determination.
	Clean Air Act Information Request
	On February 26, 2009, we received a letter from the EPA under Section 114 of the Act requesting information and copies of records relating to compliance with New Source Review and New Source Performance Standards at the Donaldsonville facility. We have completed the submittal of all requested information. There has been no further contact from the EPA regarding this matter.
	Florida Environmental Matters
	On March 17, 2014, we completed the sale of our phosphate mining and manufacturing business, which was located in Florida, to Mosaic. Pursuant to the terms of the Purchase Agreement, Mosaic has assumed the following environmental matters and we have agreed to indemnify Mosaic with respect to losses arising out of the matters below, subject to a maximum indemnification cap and the other terms of the Purchase Agreement.
	Clean Air Act Notice of Violation
	We received a Notice of Violation (NOV) from the EPA by letter dated June 16, 2010, alleging that we violated the Prevention of Significant Deterioration (PSD) Clean Air Act regulations relating to certain projects undertaken at the former Plant City, Florida facility's sulfuric acid plants. This NOV further alleges that the actions that are the basis for the alleged PSD violations also resulted in violations of Title V air operating permit regulations. Finally, the NOV alleges that we failed to comply with certain compliance dates established by hazardous air pollutant regulations for phosphoric acid manufacturing plants and phosphate fertilizer production plants. We had several meetings with the EPA with respect to this matter prior to the sale of the phosphate mining and manufacturing business in March 2014. We do not know at this time if this matter will be settled prior to initiation of formal legal action.
	We cannot estimate the potential penalties, fines or other expenditures, if any, that may result from the Clean Air Act NOV and, therefore, we cannot determine if the ultimate outcome of this matter will have a material impact on our consolidated financial position, results of operations or cash flows.
	EPCRA/CERCLA Notice of Violation
	By letter dated July 6, 2010, the EPA issued a NOV to us alleging violations of Section 313 of the Emergency Planning and Community Right-to-Know Act (EPCRA) in connection with the former Plant City facility. EPCRA requires annual reports to be submitted with respect to the use of certain toxic chemicals. The NOV also included an allegation that we violated Section 304 of EPCRA and Section 103 of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) by failing to file a timely notification relating to the release of hydrogen fluoride above applicable reportable quantities. We not know at this time if this matter will be settled prior to initiation of formal legal action.
	We do not expect that penalties or fines, if any, that may arise out of the EPCRA/CERCLA matter will have a material impact on our consolidated financial position, results of operations or cash flows.
	Other
	CERCLA/Remediation Matters
	From time to time, we receive notices from governmental agencies or third parties alleging that we are a potentially responsible party at certain cleanup sites under CERCLA or other environmental cleanup laws. In 2011, we received a notice from the Idaho Department of Environmental Quality (IDEQ) that alleged that we were a potentially responsible party for the cleanup of a former phosphate mine site we owned in the late 1950s and early 1960s located in Georgetown Canyon, Idaho. The current owner of the property and a former mining contractor received similar notices for the site. In 2014, we and the current property owner entered into a Consent Order with IDEQ and the U.S. Forest Service to conduct a remedial investigation and feasibility study of the site. We are not able to estimate at this time our potential liability, if any, with respect to the cleanup of the site. However, based on currently available information, we do not expect that any remedial or financial obligations to which we may be subject involving this or other cleanup sites will have a material adverse effect on our business, financial condition, results of operations or cash flows.

Segment_Disclosures

Segment Disclosures	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Disclosures	Segment Disclosures
	Our reporting segments consist of the following: ammonia, granular urea, UAN, other, and phosphate. These segments are differentiated by products, which are used differently by agricultural customers based on crop application, weather and other agronomic factors or by industrial customers based on their usage.
	We sold our phosphate mining and manufacturing business during the first quarter of 2014. The phosphate segment reflects the reported results of the phosphate business through March 17, 2014, plus the continuing sales of the phosphate inventory in the distribution network after March 17, 2014. The remaining phosphate inventory was sold in the second quarter of 2014; therefore, the phosphate segment does not have operating results subsequent to that quarter. The phosphate segment will continue to be included until the reporting of comparable period phosphate results ceases. Upon selling the phosphate business, we began to supply Mosaic with ammonia produced by our PLNL joint venture. The contract to supply ammonia to Mosaic from our PLNL joint venture represents the continuation of a supply practice that previously existed between our former phosphate mining and manufacturing business and other operations of the Company. Prior to March 17, 2014, PLNL sold ammonia to us for use in the phosphate business and the cost was included in our production costs in the phosphate segment. Subsequent to the sale of the phosphate business, we now sell the PLNL-sourced ammonia to Mosaic. The revenue from these sales to Mosaic and costs to purchase the ammonia from PLNL are now included in our ammonia segment. Our 50% share of the operating results of our PLNL joint venture continues to be included in our equity in earnings of operating affiliates in our consolidated statements of operations. Because of the significance of this continuing supply practice, in accordance with U.S. GAAP, the phosphate mining and manufacturing business is not reported as discontinued operations in our consolidated statements of operations.
	Our management uses gross margin to evaluate segment performance and allocate resources. Total other operating costs and expenses (consisting of selling, general and administrative expenses and other operating—net) and non-operating expenses (interest and income taxes) are centrally managed and are not included in the measurement of segment profitability reviewed by management.
	Our assets, with the exception of goodwill, are not monitored by or reported to our Chief Operating Decision Maker by segment; therefore, we do not present total assets by segment. Goodwill by segment is presented in Note 7—Goodwill and Other Intangible Assets.
	Segment data for sales, cost of sales and gross margin for the three months ended March 31, 2015 and 2014 are presented in the tables below.
		Ammonia		Granular		UAN(1)		Other(1)		Phosphate		Consolidated
				Urea(1)
		(in millions)
	Three months ended March 31, 2015
	Net sales	$	287.7	$	212.2	$	355.7	$	98	$	—	$	953.6
	Cost of sales	167.8		100.1		197		72.9		—		537.8
	Gross margin	$	119.9	$	112.1	$	158.7	$	25.1	$	—	415.8
	Total other operating costs and expenses											58.3
	Equity in earnings of operating affiliates											9.7
	Operating earnings											$	367.2
	Three months ended March 31, 2014(2)
	Net sales	$	272.4	$	216.2	$	399.9	$	99	$	145.1	$	1,132.60
	Cost of sales	148.1		114.5		217.8		72.8		136.6		689.8
	Gross margin	$	124.3	$	101.7	$	182.1	$	26.2	$	8.5	442.8
	Total other operating costs and expenses											35.9
	Gain on sale of phosphate business											747.1
	Equity in earnings of operating affiliates											15.8
	Operating earnings											$	1,169.80
	_______________________________________________________________________________
	(1)	The cost of ammonia that is upgraded into other products is transferred at cost into the upgraded product results.
	(2)	As discussed in Note 1—Background and Basis of Presentation, in the third quarter of 2014, we changed the composition of our reportable segments. Prior-year results have been recast to conform with the new presentation of reportable segments.

Condensed_Consolidating_Financ

Condensed Consolidating Financial Statements	3 Months Ended
	Mar. 31, 2015
Condensed Consolidating Financial Statements
Condensed Consolidating Financial Statements	Condensed Consolidating Financial Statements
	The following condensed consolidating financial statements are presented in accordance with SEC Regulation S-X Rule 3-10, Financial statements of guarantors and issuers of guaranteed securities registered or being registered, and relates to the senior notes (the Notes) issued by CF Industries, Inc. (CF Industries), a 100% owned subsidiary of CF Industries Holdings, Inc. (Parent), described in Note 12—Financing Agreements, and the full and unconditional guarantee of such Notes by Parent and to debt securities of CF Industries, and the full and unconditional guarantee thereof by Parent, that may be offered and sold from time to time under the registration statement on Form S-3 filed by Parent and CF Industries with the SEC on April 22, 2013. In the event that a subsidiary of Parent, other than CF Industries, becomes a borrower or a guarantor under the Credit Agreement (or any renewal, replacement or refinancing thereof), such subsidiary would be required to become a guarantor of the Notes, provided that such requirement will no longer apply with respect to the Notes due in 2023, 2034, 2043 and 2044 following the repayment of the Notes due in 2018 and 2020 or the subsidiaries of Parent, other than CF Industries, otherwise becoming no longer subject to such a requirement to guarantee the Notes due in 2018 and 2020. As of March 31, 2015, none of such subsidiaries of Parent was, or was required to be, a guarantor to the Notes. For purposes of the presentation of condensed consolidating financial information, the subsidiaries of Parent other than CF Industries are referred to as the Other Subsidiaries.
	Presented below are condensed consolidating statements of operations and statements of cash flows for Parent, CF Industries and the Other Subsidiaries for the three months ended March 31, 2015 and 2014, and condensed consolidating balance sheets for Parent, CF Industries and the Other Subsidiaries as of March 31, 2015 and December 31, 2014. The condensed consolidating financial statements presented below are not necessarily indicative of the financial position, results of operations, comprehensive income or cash flows of Parent, CF Industries or the Other Subsidiaries on a stand-alone basis.
	In these condensed consolidating financial statements, investments in subsidiaries are presented under the equity method, in which our investments are recorded at cost and adjusted for our ownership share of a subsidiary's cumulative results of operations, distributions and other equity changes, and the eliminating entries reflect primarily intercompany transactions such as sales, accounts receivable and accounts payable and the elimination of equity investments and earnings of subsidiaries.
	Condensed Consolidating Statement of Operations
		Three months ended March 31, 2015
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Net sales	$	—		$	81.3		$	1,003.80		$	(131.5	)	$	953.6
	Cost of sales	—			81.3			588			(131.5		)	537.8
	Gross margin	—			—			415.8			—			415.8
	Selling, general and administrative expenses	0.8			0.3			39			—			40.1
	Other operating—net	—			(5.2		)	23.4			—			18.2
	Total other operating costs and expenses	0.8			(4.9		)	62.4			—			58.3
	Equity in earnings of operating affiliates	—			—			9.7			—			9.7
	Operating (losses) earnings	(0.8		)	4.9			363.1			—			367.2
	Interest expense	—			64.9			(31.0		)	—			33.9
	Interest income	—			—			(0.4		)	—			(0.4		)
	Net (earnings) of wholly-owned subsidiaries	(231.1		)	(270.7		)	—			501.8			—
	Other non-operating—net	—			0.1			(0.1		)	—			—
	Earnings before income taxes and equity in earnings of non-operating affiliates	230.3			210.6			394.6			(501.8		)	333.7
	Income tax (benefit) provision	(0.3		)	(20.5		)	133.5			—			112.7
	Equity in earnings of non-operating affiliates—net of taxes	—			—			14.9			—			14.9
	Net earnings	230.6			231.1			276			(501.8		)	235.9
	Less: Net earnings attributable to noncontrolling interest	—			—			5.3			—			5.3
	Net earnings attributable to common stockholders	$	230.6		$	231.1		$	270.7		$	(501.8	)	$	230.6
	Condensed Consolidating Statement of Comprehensive Income
		Three months ended March 31, 2015
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Net earnings	$	230.6		$	231.1		$	276		$	(501.8	)	$	235.9
	Other comprehensive income (losses)	(80.5		)	(80.5		)	(80.5		)	161			(80.5		)
	Comprehensive income	150.1			150.6			195.5			(340.8		)	155.4
	Less: Comprehensive income attributable to noncontrolling interest	—			—			5.3			—			5.3
	Comprehensive income attributable to common stockholders	$	150.1		$	150.6		$	190.2		$	(340.8	)	$	150.1
	Condensed Consolidating Statement of Operations
		Three months ended March 31, 2014
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Net sales	$	—		$	372		$	1,223.00		$	(462.4	)	$	1,132.60
	Cost of sales	—			188.3			963.9			(462.4		)	689.8
	Gross margin	—			183.7			259.1			—			442.8
	Selling, general and administrative expenses	0.7			1.4			39.6			—			41.7
	Other operating—net	—			(0.3		)	(5.5		)	—			(5.8		)
	Total other operating costs and expenses	0.7			1.1			34.1			—			35.9
	Gain on sale of phosphate business	—			761.5			(14.4		)	—			747.1
	Equity in earnings of operating affiliates	—			—			15.8			—			15.8
	Operating (losses) earnings	(0.7		)	944.1			226.4			—			1,169.80
	Interest expense	—			49.4			(9.3		)	(0.1		)	40
	Interest income	—			(0.1		)	(0.2		)	0.1			(0.2		)
	Net (earnings) of wholly-owned subsidiaries	(709.0		)	(151.3		)	—			860.3			—
	Other non-operating—net	—			(0.1		)	—			—			(0.1		)
	Earnings before income taxes and equity in earnings (losses) of non-operating affiliates	708.3			1,046.20			235.9			(860.3		)	1,130.10
	Income tax (benefit) provision	(0.2		)	337.1			76.3			—			413.2
	Equity in (losses) earnings of non-operating affiliates—net of taxes	—			(0.1		)	3.6			—			3.5
	Net earnings	708.5			709			163.2			(860.3		)	720.4
	Less: Net earnings attributable to noncontrolling interest	—			—			11.9			—			11.9
	Net earnings attributable to common stockholders	$	708.5		$	709		$	151.3		$	(860.3	)	$	708.5
	Condensed Consolidating Statement of Comprehensive Income
		Three months ended March 31, 2014
		Parent			CF Industries			Other			Eliminations			Consolidated
Subsidiaries
	(in millions)
Net earnings	$	708.5		$	709		$	163.2		$	(860.3	)	$	720.4
Other comprehensive income (losses)	(9.4		)	(9.4		)	(9.4		)	18.8			(9.4		)
Comprehensive income	699.1			699.6			153.8			(841.5		)	711
Less: Comprehensive income attributable to noncontrolling interest	—			—			11.9			—			11.9
Comprehensive income attributable to common stockholders	$	699.1		$	699.6		$	141.9		$	(841.5	)	$	699.1
Condensed Consolidating Balance Sheet
	31-Mar-15
	Parent			CF Industries			Other			Eliminations			Consolidated
							Subsidiaries			and
										Reclassifications
	(in millions)
Assets
Current assets:
Cash and cash equivalents	$	—		$	58.7		$	1,720.10		$	—		$	1,778.80
Restricted cash	—			—			63.3			—			63.3
Accounts and notes receivable—net	—			2,318.20			811.1			(2,962.2		)	167.1
Inventories	—			—			267.7			—			267.7
Deferred income taxes	—			—			55.1			—			55.1
Prepaid income taxes	2.2			2.9			27.7			(5.1		)	27.7
Other current assets	—			—			20			—			20
Total current assets	2.2			2,379.80			2,965.00			(2,967.3		)	2,379.70
Property, plant and equipment—net	—			—			5,925.00			—			5,925.00
Investments in and advances to affiliates	6,291.10			9,327.00			853.5			(15,618.1		)	853.5
Due from affiliates	570.7			—			1.7			(572.4		)	—
Goodwill	—			—			2,090.40			—			2,090.40
Other assets	—			64.8			171.9			—			236.7
Total assets	$	6,864.00		$	11,771.60		$	12,007.50		$	(19,157.8	)	$	11,485.30
Liabilities and Equity
Current liabilities:
Accounts and notes payable and accrued expenses	$	2,802.10		$	235.4		$	617.9		$	(2,962.2	)	$	693.2
Income taxes payable	—			—			84.5			(5.1		)	79.4
Customer advances	—			—			495.2			—			495.2
Other current liabilities	—			—			43.5			—			43.5
Total current liabilities	2,802.10			235.4			1,241.10			(2,967.3		)	1,311.30
Long-term debt	—			4,592.50			—			—			4,592.50
Deferred income taxes	—			44.5			738.5			—			783
Due to affiliates	—			572.4			—			(572.4		)	—
Other noncurrent liabilities	—			35.6			344.4			—			380
Equity:
Stockholders' equity:
Preferred stock	—			—			16.4			(16.4		)	—
Common stock	0.5			—			1.1			(1.1		)	0.5
Paid-in capital	1,426.50			(12.6		)	8,283.50			(8,270.9		)	1,426.50
Retained earnings	3,334.10			6,544.10			1,266.60			(7,810.7		)	3,334.10
Treasury stock	(458.9		)	—			—			—			(458.9		)
Accumulated other comprehensive income (loss)	(240.3		)	(240.3		)	(240.7		)	481			(240.3		)
Total stockholders' equity	4,061.90			6,291.20			9,326.90			(15,618.1		)	4,061.90
Noncontrolling interest	—			—			356.6			—			356.6
Total equity	4,061.90			6,291.20			9,683.50			(15,618.1		)	4,418.50
Total liabilities and equity	$	6,864.00		$	11,771.60		$	12,007.50		$	(19,157.8	)	$	11,485.30
Condensed Consolidating Balance Sheet
	31-Dec-14
	Parent			CF Industries			Other			Eliminations			Consolidated
							Subsidiaries			and
										Reclassifications
	(in millions)
Assets
Current assets:
Cash and cash equivalents	$	—		$	105.7		$	1,890.90		$	—		$	1,996.60
Restricted cash	—			—			86.1			—			86.1
Accounts and notes receivable—net	—			2,286.50			651.9			(2,746.9		)	191.5
Inventories	—			—			202.9			—			202.9
Deferred income taxes	—			—			84			—			84
Prepaid income taxes	1.9			—			34.8			(1.9		)	34.8
Other current assets	—			—			18.6			—			18.6
Total current assets	1.9			2,392.20			2,969.20			(2,748.8		)	2,614.50
Property, plant and equipment—net	—			—			5,525.80			—			5,525.80
Investments in and advances to affiliates	6,212.50			9,208.70			861.5			(15,421.2		)	861.5
Due from affiliates	570.7			—			1.7			(572.4		)	—
Goodwill	—			—			2,092.80			—			2,092.80
Other assets	—			65.1			178.5			—			243.6
Total assets	$	6,785.10		$	11,666.00		$	11,629.50		$	(18,742.4	)	$	11,338.20
Liabilities and Equity
Current liabilities:
Accounts and notes payable and accrued expenses	$	2,575.40		$	207.7		$	553.8		$	(2,747.0	)	$	589.9
Income taxes payable	—			10.8			7.1			(1.9		)	16
Customer advances	—			—			325.4			—			325.4
Other current liabilities	—			—			48.4			—			48.4
Total current liabilities	2,575.40			218.5			934.7			(2,748.9		)	979.7
Long-term debt	—			4,592.50			—			—			4,592.50
Deferred income taxes	—			34.8			783.8			—			818.6
Due to affiliates	—			572.4			—			(572.4		)	—
Other noncurrent liabilities	—			35.3			339.6			—			374.9
Equity:
Stockholders' equity:
Preferred stock	—			—			16.4			(16.4		)	—
Common stock	0.5			—			1.1			(1.1		)	0.5
Paid-in capital	1,415.90			(12.6		)	8,283.50			(8,270.9		)	1,415.90
Retained earnings	3,175.30			6,384.90			1,067.80			(7,452.7		)	3,175.30
Treasury stock	(222.2		)	—			—			—			(222.2		)
Accumulated other comprehensive income (loss)	(159.8		)	(159.8		)	(160.2		)	320			(159.8		)
Total stockholders' equity	4,209.70			6,212.50			9,208.60			(15,421.1		)	4,209.70
Noncontrolling interest	—			—			362.8			—			362.8
Total equity	4,209.70			6,212.50			9,571.40			(15,421.1		)	4,572.50
Total liabilities and equity	$	6,785.10		$	11,666.00		$	11,629.50		$	(18,742.4	)	$	11,338.20
Condensed Consolidating Statement of Cash Flows
	Three months ended March 31, 2015
	Parent			CF Industries			Other			Eliminations			Consolidated
							Subsidiaries
	(in millions)
Operating Activities:
Net earnings	$	230.6		$	231.1		$	276		$	(501.8	)	$	235.9
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	—			1.8			113.6			—			115.4
Deferred income taxes	—			9.7			(9.4		)	—			0.3
Stock-based compensation expense	3.4			—			0.5			—			3.9
Excess tax benefit from stock-based compensation	(1.5		)	—			—			—			(1.5		)
Unrealized gain on derivatives	—			—			(10.6		)	—			(10.6		)
Loss on disposal of property, plant and equipment	—			—			5.5			—			5.5
Undistributed (earnings) loss of affiliates—net	(231.1		)	(270.7		)	(18.4		)	501.8			(18.4		)
Due to/from affiliates—net	1.5			0.3			(1.8		)	—			—
Changes in:
Accounts and notes receivable—net	—			18.4			16.7			(11.0		)	24.1
Inventories	—			—			(68.0		)	—			(68.0		)
Accrued and prepaid income taxes	(0.2		)	(13.7		)	97.5			—			83.6
Accounts and notes payable and accrued expenses	—			27.8			(49.4		)	11			(10.6		)
Customer advances	—			—			169.8			—			169.8
Other—net	—			0.3			1.2			—			1.5
Net cash provided by operating activities	2.7			5			523.2			—			530.9
Investing Activities:
Additions to property, plant and equipment	—			—			(444.8		)	—			(444.8		)
Proceeds from sale of property, plant and equipment	—			—			3.3			—			3.3
Withdrawals from restricted cash funds	—			—			22.8			—			22.8
Other—net	—			—			(10.9		)	—			(10.9		)
Net cash used in investing activities	—			—			(429.6		)	—			(429.6		)
Financing Activities:
Short-term debt—net	226.3			(50.0		)	(176.3		)	—			—
Financing fees	—			(2.0		)	—			—			(2.0		)
Dividends paid on common stock	(71.8		)	(71.8		)	(71.8		)	143.6			(71.8		)
Distributions to noncontrolling interest	—			—			(11.5		)	—			(11.5		)
Purchases of treasury stock	(236.2		)	—			—			—			(236.2		)
Issuances of common stock under employee stock plans	5.7			—			—			—			5.7
Excess tax benefit from stock-based compensation	1.5			—			—			—			1.5
Dividends to/from affiliates	71.8			71.8			—			(143.6		)	—
Net cash used in financing activities	(2.7		)	(52.0		)	(259.6		)	—			(314.3		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(4.8		)	—			(4.8		)
Decrease in cash and cash equivalents	—			(47.0		)	(170.8		)	—			(217.8		)
Cash and cash equivalents at beginning of period	—			105.7			1,890.90			—			1,996.60
Cash and cash equivalents at end of period	$	—		$	58.7		$	1,720.10		$	—		$	1,778.80
Condensed Consolidating Statement of Cash Flows
	Three months ended March 31, 2014
	Parent			CF Industries			Other			Eliminations			Consolidated
							Subsidiaries
	(in millions)
Operating Activities:
Net earnings	$	708.5		$	709		$	163.2		$	(860.3	)	$	720.4
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	—			1.6			103.7			—			105.3
Deferred income taxes	—			—			17.1			—			17.1
Stock-based compensation expense	3.8			—			—			—			3.8
Excess tax benefit from stock-based compensation	(4.5		)	—			—			—			(4.5		)
Unrealized loss on derivatives	—			—			21.9			—			21.9
Gain on sale of phosphate business	—			(761.5		)	14.4			—			(747.1		)
Loss on disposal of property, plant and equipment	—			—			0.1			—			0.1
Undistributed loss (earnings) of affiliates—net	(709.0		)	(151.3		)	(11.4		)	860.3			(11.4		)
Due to/from affiliates—net	4.5			1.8			(6.3		)	—			—
Changes in:
Accounts and notes receivable—net	—			(16.7		)	(278.5		)	327.4			32.2
Inventories	—			5.6			(117.9		)	—			(112.3		)
Accrued and prepaid income taxes	(0.2		)	337.6			(57.5		)	—			279.9
Accounts and notes payable and accrued expenses	0.1			340.5			54.2			(327.4		)	67.4
Customer advances	—			—			356.8			—			356.8
Other—net	—			(3.6		)	24			—			20.4
Net cash provided by operating activities	3.2			463			283.8			—			750
Investing Activities:
Additions to property, plant and equipment	—			(16.3		)	(376.1		)	—			(392.4		)
Proceeds from sale of property, plant and equipment	—			—			1.3			—			1.3
Proceeds from sale of phosphate business	—			893.1			460.5			—			1,353.60
Deposits to restricted cash funds	—			—			(505.0		)	—			(505.0		)
Withdrawals from restricted cash funds	—			—			5.7			—			5.7
Other—net	—			—			5.8			—			5.8
Net cash provided by (used in) investing activities	—			876.8			(407.8		)	—			469
Financing Activities:
Proceeds from long-term borrowings	—			1,494.20			—			—			1,494.20
Short-term debt—net	764.7			(1,438.8		)	674.1			—			—
Financing fees	—			(15.7		)	—			—			(15.7		)
Dividends paid on common stock	(55.2		)	(55.2		)	(55.2		)	110.4			(55.2		)
Dividends to/from affiliates	55.2			55.2			—			(110.4		)	—
Distributions to noncontrolling interest	—			—			(9.6		)	—			(9.6		)
Purchases of treasury stock	(781.8		)	—			—			—			(781.8		)
Issuances of common stock under employee stock plans	9.4			—			—			—			9.4
Excess tax benefit from stock-based compensation	4.5			—			—			—			4.5
Other—net	—			(1.0		)	(42.0		)	—			(43.0		)
Net cash (used in) provided by financing activities	(3.2		)	38.7			567.3			—			602.8
Effect of exchange rate changes on cash and cash equivalents	—			—			(2.4		)	—			(2.4		)
Increase in cash and cash equivalents	—			1,378.50			440.9			—			1,819.40
Cash and cash equivalents at beginning of period	0.1			20.4			1,690.30			—			1,710.80
Cash and cash equivalents at end of period	$	0.1		$	1,398.90		$	2,131.20		$	—		$	3,530.20

Subsequent_Event

Subsequent Event	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Event	Subsequent Events
	Share Repurchases
	In April 2015, we repurchased 0.5 million of the Company's common shares for $140.6 million as part of the $1.0 billion share repurchase program announced in the third quarter of 2014 (see Note 15—Treasury Stock). Together with the 2.2 million shares repurchased through March 31, 2015, these repurchases bring the total repurchased shares to date under this program to 2.7 million for an aggregate expenditure of $750.0 million.
	Proposed Internal Revenue Service Regulation Impacting Master Limited Partnerships
	On May 6, 2015, the Internal Revenue Service (“IRS”) issued proposed regulations on the types of income and activities which constitute qualified income of a Master Limited Partnership (“MLP”). The proposed regulations would have the effect of limiting the types of income and activities which qualify under the MLP rules, subject to certain transition provisions. The IRS proposal specifically highlights companies that perform chemical processing and transformation activities as one of the focuses of the proposed changes, but the proposed regulations do not contain specific proposals regarding fertilizer-related activities. The proposed regulations reserve on the provisions relating to fertilizer activities.
	The Company holds a 75.3% interest in Terra Nitrogen Company, L.P. (TNCLP), a publicly-traded MLP, which owns a fertilizer manufacturing complex in Verdigris, Oklahoma. Currently, no federal income taxes are paid by TNCLP due to its MLP status. Any change in the tax treatment of qualified income of fertilizer-related activities could have a material impact on the taxation of TNCLP and could have a material adverse impact on unit holder distributions for unit holders who would not be entitled to a dividends received deduction or other similar offsetting deduction. If TNCLP were taxed as a corporation, under current law, due to its current ownership interest, CF Industries Holdings would qualify for a partial dividends received deduction on the dividends received from TNCLP. Therefore, we would not expect this proposed change to have a material impact on the financial condition or results of operations of CF Industries Holdings. We will continue to monitor the IRS regulatory activities.

New_Accounting_Pronouncements_

New Accounting Pronouncements and Changes in Accounting Standards (Policies)	3 Months Ended
	Mar. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Standards	New Accounting Standards
	In April 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. This ASU requires debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of the related debt liability instead of being presented as an asset. Debt disclosures will include the face amount of the debt liability and the effective interest rate. The update requires retrospective application and represents a change in accounting principle. This ASU is effective for fiscal years beginning after December 15, 2015. Early adoption is permitted for financial statements that have not been previously issued. We are currently evaluating the impact of the adoption of this ASU on our consolidated financial statements.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which supersedes the revenue recognition requirements in Accounting Standards Codification (ASC) 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments. Additionally, information concerning the costs to obtain and fulfill a contract, including assets to be recognized, is to be disclosed. This ASU is effective for interim and annual reporting periods beginning after December 15, 2016. In April 2015, the FASB voted to propose to defer the effective date of this ASU by one year, with early adoption on the original effective date permitted. We are currently evaluating the impact of the adoption of this ASU on our consolidated financial statements.

Net_Earnings_Per_Share_Tables

Net Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Summary of net earnings per share	Net earnings per share were computed as follows:
		Three months ended
		March 31,
		2015		2014
		(in millions, except per share amounts)
	Net earnings attributable to common stockholders	$	230.6	$	708.5
	Basic earnings per common share:
	Weighted-average common shares outstanding	47.9		54.8
	Net earnings attributable to common stockholders	$	4.81	$	12.94
	Diluted earnings per common share:
	Weighted-average common shares outstanding	47.9		54.8
	Dilutive common shares—stock options	0.2		0.1
	Diluted weighted-average shares outstanding	48.1		54.9
	Net earnings attributable to common stockholders	$	4.79	$	12.9

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Schedule of inventories	Inventories consist of the following:
		March 31,		December 31,
		2015		2014
		(in millions)
	Finished goods	$	244.6	$	179.5
	Raw materials, spare parts and supplies	23.1		23.4
		$	267.7	$	202.9

Property_Plant_and_EquipmentNe1

Property, Plant and Equipment-Net (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment, Net [Abstract]
Components of property, plant and equipment-net	Property, plant and equipment—net consists of the following:
		March 31,			December 31,
		2015			2014
		(in millions)
	Land	$	47.9		$	48.4
	Machinery and equipment	5,276.00			5,268.70
	Buildings and improvements	159.3			160.7
	Construction in progress(1)	2,998.90			2,559.00
		8,482.10			8,036.80
	Less: Accumulated depreciation and amortization	2,557.10			2,511.00
		$	5,925.00		$	5,525.80
	_______________________________________________________________________________
	(1)	As of March 31, 2015 and December 31, 2014, we had construction in progress that was accrued but unpaid of $389.7 million and $279.0 million, respectively. These amounts included accruals related to our capacity expansion projects of $348.3 million and $244.3 million as of March 31, 2015 and December 31, 2014, respectively.
Summary of plant turnaround activity	The following is a summary of plant turnaround activity:
		Three months ended
		March 31,
		2015			2014
		(in millions)
	Net capitalized turnaround costs:
	Beginning balance	$	153.2		$	119.8
	Additions	26.5			17.1
	Depreciation	(13.7		)	(18.7		)
	Effect of exchange rate changes	(1.7		)	(0.6		)
	Ending balance	$	164.3		$	117.6

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of carrying amount of goodwill by business segment	The following table shows the carrying amount of goodwill by business segment as of March 31, 2015 and December 31, 2014:
		Ammonia			Granular Urea			UAN			Other		Total
		(in millions)
	Balance as of December 31, 2014	$	578.7		$	829.6		$	577		$	107.5	$	2,092.80
	Effect of exchange rate changes	(0.7		)	(1.0		)	(0.7		)	—		(2.4		)
	Balance as of March 31, 2015	$	578		$	828.6		$	576.3		$	107.5	$	2,090.40
Schedule of the identifiable intangibles and their carrying values presented in other noncurrent assets on consolidated balance sheet	Our identifiable intangibles and carrying values are shown below and are presented in noncurrent other assets on our consolidated balance sheets.
		31-Mar-15									31-Dec-14
		Gross			Accumulated			Net			Gross		Accumulated			Net
		Carrying			Amortization						Carrying		Amortization
		Amount									Amount
		(in millions)
	Intangible assets:
	Customer relationships	$	50		$	(13.9	)	$	36.1		$	50	$	(13.2	)	$	36.8
	TerraCair brand	10			(10.0		)	—			10		(5.0		)	5
	Total intangible assets	$	60		$	(23.9	)	$	36.1		$	60	$	(18.2	)	$	41.8
Schedule of estimated future amortization expense	Total estimated amortization expense for the remainder of 2015 and each of the five succeeding fiscal years is as follows:
		Estimated
		Amortization
		Expense
		(in millions)
	Remainder of 2015	$	2.1
	2016	2.8
	2017	2.8
	2018	2.8
	2019	2.8
	2020	2.8

Equity_Method_Investments_Tabl

Equity Method Investments (Tables)	3 Months Ended
	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Schedule of equity method investments	Equity method investments consist of the following:
		March 31,		December 31,
		2015		2014
		(in millions)
	Operating equity method investments	$	376.3	$	377.6
	Non-operating equity method investments	477.2		483.9
	Investments in and advances to affiliates	$	853.5	$	861.5
Schedule of combined results of operations and financial position for operating equity method investments	The combined results of operations and financial position for our operating equity method investments are summarized below:
		Three months ended
		March 31,
		2015		2014
		(in millions)
	Summarized statement of operations information:
	Net sales	$	75.2	$	75.2
	Net earnings	$	23	$	24.8
	Equity in earnings of operating affiliates	$	9.7	$	15.8
		March 31,		December 31,
		2015		2014
		(in millions)
	Summarized balance sheet information:
	Current assets	$	91	$	111.2
	Noncurrent assets	137.2		130.5
	Total assets	$	228.2	$	241.7
	Current liabilities	$	25.8	$	39.4
	Noncurrent liabilities	21		22
	Equity	181.4		180.3
	Total liabilities and equity	$	228.2	$	241.7
Schedule of combined results of operations and financial position for non-operating equity method investments	The combined results of operations and financial position of our non-operating equity method investments are summarized below:
		Three months ended
		March 31,
		2015		2014
		(in millions)
	Summarized statement of operations information:
	Net sales	$	470.2	$	570.3
	Net earnings	$	35.3	$	22.4
	Equity in earnings of non-operating affiliates—net of taxes	$	14.9	$	3.5
		March 31,		December 31,
		2015		2014
		(in millions)
	Summarized balance sheet information:
	Current assets	$	523.7	$	499.8
	Noncurrent assets	281.5		298.2
	Total assets	$	805.2	$	798
	Current liabilities	$	287.9	$	290.7
	Noncurrent liabilities	174.7		186.9
	Equity	342.6		320.4
	Total liabilities and equity	$	805.2	$	798

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of cash and cash equivalents and other investments reconciliation from adjusted cost to fair value	Our cash and cash equivalents and other investments consist of the following:
		31-Mar-15
		Cost Basis			Unrealized		Unrealized			Fair Value
					Gains		Losses
		(in millions)
	Cash	$	62.4		$	—	$	—		$	62.4
	Cash equivalents:
	U.S. and Canadian government obligations	1,691.40			—		—			1,691.40
	Other debt securities	25			—		—			25
	Total cash and cash equivalents	$	1,778.80		$	—	$	—		$	1,778.80
	Restricted cash	63.3			—		—			63.3
	Nonqualified employee benefit trusts	18.4			2.1		—			20.5
		31-Dec-14
		Cost Basis			Unrealized		Unrealized			Fair Value
					Gains		Losses
		(in millions)
	Cash	$	71.3		$	—	$	—		$	71.3
	Cash equivalents:
	U.S. and Canadian government obligations	1,916.30			—		—			1,916.30
	Other debt securities	9			—		—			9
	Total cash and cash equivalents	$	1,996.60		$	—	$	—		$	1,996.60
	Restricted cash	86.1			—		—			86.1
	Nonqualified employee benefit trusts	17.4			2		—			19.4
Schedule of assets and liabilities measured at fair value on a recurring basis	The following tables present assets and liabilities included in our consolidated balance sheets as of March 31, 2015 and December 31, 2014 that are recognized at fair value on a recurring basis, and indicate the fair value hierarchy utilized to determine such fair value:
		31-Mar-15
		Total Fair			Quoted Prices		Significant			Significant
		Value			in Active		Other			Unobservable
					Markets		Observable			Inputs
					(Level 1)		Inputs			(Level 3)
							(Level 2)
		(in millions)
	Cash equivalents	$	1,716.40		$	1,716.40	$	—		$	—
	Restricted cash	63.3			63.3		—			—
	Derivative assets	6.2			—		6.2			—
	Nonqualified employee benefit trusts	20.5			20.5		—			—
	Derivative liabilities	(43.5		)	—		(43.5		)	—
		31-Dec-14
		Total Fair			Quoted Prices		Significant			Significant
		Value			in Active		Other			Unobservable
					Markets		Observable			Inputs
					(Level 1)		Inputs			(Level 3)
							(Level 2)
		(in millions)
	Cash equivalents	$	1,925.30		$	1,925.30	$	—		$	—
	Restricted cash	86.1			86.1		—			—
	Derivative assets	0.5			—		0.5			—
	Nonqualified employee benefit trusts	19.4			19.4		—			—
	Derivative liabilities	(48.4		)	—		(48.4		)	—
Schedule of carrying amounts and estimated fair values of financial instruments	The carrying amounts and estimated fair values of our financial instruments are as follows:
		31-Mar-15					31-Dec-14
		Carrying			Fair Value		Carrying			Fair Value
		Amount					Amount
		(in millions)
	Long-term debt	$	4,592.50		$	5,086.60	$	4,592.50		$	4,969.30

Interest_Expense_Tables

Interest Expense (Tables)	3 Months Ended
	Mar. 31, 2015
Interest Expense [Abstract]
Schedule of interest expense	Details of interest expense are as follows:
		Three months ended
		March 31,
		2015			2014
		(in millions)
	Interest on borrowings(1)	$	63.5		$	47.9
	Fees on financing agreements(1)	1.4			3.5
	Interest on tax liabilities	0.5			1.5
	Interest capitalized	(31.5		)	(12.9		)
		$	33.9		$	40
	_______________________________________________________________________________
	(1)	See Note 12—Financing Agreements for additional information.

Financing_Agreements_Tables

Financing Agreements (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Components of long-term debt	Long-term debt presented on our consolidated balance sheets as of March 31, 2015 and December 31, 2014 consisted of the following:
		March 31,		December 31,
		2015		2014
		(in millions)
	Unsecured senior notes:
	6.875% due 2018	$	800	$	800
	7.125% due 2020	800		800
	3.450% due 2023	749.4		749.4
	5.150% due 2034	746.2		746.2
	4.950% due 2043	748.8		748.8
	5.375% due 2044	748.1		748.1
		4,592.50		4,592.50
	Less: Current portion	—		—
	Net long-term debt	$	4,592.50	$	4,592.50

Noncontrolling_Interests_Table

Noncontrolling Interests (Tables)	3 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Schedule of reconciliation of the beginning and ending balances of noncontrolling interest and distributions payable to the noncontrolling interests on the entity's consolidated balance sheet	A reconciliation of the beginning and ending balances of TNCLP's noncontrolling interest and distributions payable to noncontrolling interests in our consolidated balance sheets is provided below.
		Three months ended
		March 31,
		2015			2014
		(in millions)
	Noncontrolling interest:
	Beginning balance	$	362.8		$	362.3
	Earnings attributable to noncontrolling interest	5.3			11.9
	Declaration of distributions payable	(11.5		)	(9.6		)
	Ending balance	$	356.6		$	364.6
	Distributions payable to noncontrolling interest:
	Beginning balance	$	—		$	—
	Declaration of distributions payable	11.5			9.6
	Distributions to noncontrolling interest	(11.5		)	(9.6		)
	Ending balance	$	—		$	—

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of effect of derivatives in the consolidated statements of operations	The effect of derivatives in our consolidated statements of operations is shown in the table below. None of our derivatives were designated as hedging instruments.
		Unrealized gain (loss) recognized in income
				Three months ended
				March 31,
		Location		2015				2014
				(in millions)
	Natural gas derivatives	Cost of sales		$	28.7			$	(22.6	)
	Foreign exchange contracts	Other operating—net		(12.3		)		(4.9		)
	Unrealized gains (losses) recognized in income			$	16.4			$	(27.5	)
		Gain (loss) in income
		Three months ended
		March 31,
	All Derivatives	2015				2014
		(in millions)
	Unrealized gains (losses)	$	16.4			$	(27.5	)
	Realized (losses) gains	(43.7		)		62
	Net derivative (losses) gains	$	(27.3	)		$	34.5
Schedule of fair values of derivatives in our consolidated balance sheet	The fair values of derivatives on our consolidated balance sheets are shown below. As of March 31, 2015 and December 31, 2014, none of our derivative instruments were designated as hedging instruments. For additional information on derivative fair values, see Note 9—Fair Value Measurements.
		Asset Derivatives										Liability Derivatives
		Balance Sheet		31-Mar-15				31-Dec-14				Balance Sheet	31-Mar-15			31-Dec-14
		Location										Location
				(in millions)									(in millions)
	Foreign exchange contracts	Other current assets		$	1.2			$	—			Other current liabilities	$	(36.0	)	$	(22.4	)
	Foreign exchange contracts	Other noncurrent assets		—				—				Other noncurrent liabilities	—			—
	Natural gas derivatives	Other current assets		5				0.5				Other current liabilities	(7.5		)	(26.0		)
	Natural gas derivatives	Other noncurrent assets		—				—				Other noncurrent liabilities	—			—
	Total derivatives			$	6.2			$	0.5				$	(43.5	)	$	(48.4	)
	Current / Noncurrent totals
		Other current assets		$	6.2			$	0.5			Other current liabilities	$	(43.5	)	$	(48.4	)
		Other noncurrent assets		—				—				Other noncurrent liabilities	—			—
	Total derivatives			$	6.2			$	0.5				$	(43.5	)	$	(48.4	)
Schedule of amounts relevant to offsetting of derivative assets and liabilities	The following table presents amounts relevant to offsetting of our derivative assets and liabilities as of March 31, 2015 and December 31, 2014:
		Amounts				Gross amounts not offset in consolidated balance sheets
		presented in
		consolidated
		balance
		sheets(1)				Financial				Cash			Net
						instruments				collateral			amount
										received
										(pledged)
		(in millions)
	31-Mar-15
	Total derivative assets	$	6.2			$	5.8			$	—		$	0.4
	Total derivative liabilities	43.5				5.8				—			37.7
	Net liabilities	$	(37.3	)		$	—			$	—		$	(37.3	)
	31-Dec-14
	Total derivative assets	$	0.5			$	0.5			$	—		$	—
	Total derivative liabilities	48.4				0.5				—			47.9
	Net liabilities	$	(47.9	)		$	—			$	—		$	(47.9	)
	_______________________________________________________________________________
	(1)	We report the fair values of our derivative assets and liabilities on a gross basis on our consolidated balance sheets. As a result, the gross amounts recognized and net amounts presented are the same.

Treasury_Stock_Tables

Treasury Stock (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Share Repurchases	The following table summarizes the share repurchases under the 2014 Program and the 2012 Program:
		2014 Program			2012 Program
		Shares	Amounts		Shares	Amounts
		(in millions)
	Shares repurchased as of December 31, 2013	—	$	—	7.3	$	1,449.30
	Shares repurchased in 2014:
	First quarter	—	$	—	3.2	$	793.9
	Second quarter	—	—		3.1	756.8
	Third quarter	—	—		—	—
	Fourth quarter	1.4	372.8		—	—
	Total shares repurchased in 2014	1.4	372.8		6.3	1,550.70
	Shares repurchased as of December 31, 2014	1.4	$	372.8	13.6	$	3,000.00
	Shares repurchased in 2015:
	First quarter	0.8	$	236.6
	Shares repurchased as of March 31, 2015	2.2	$	609.4

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Schedule of changes to AOCI	Changes to accumulated other comprehensive income (AOCI) are as follows:
		Foreign				Unrealized				Unrealized		Defined			Accumulated
		Currency				Gain (Loss)				Gain (Loss)		Benefit			Other
		Translation				on				on		Plans			Comprehensive
		Adjustment				Securities				Derivatives					Income (Loss)
		(in millions)
	Balance as of December 31, 2013	$	31.9			$	0.6			$	6.5	$	(81.6	)	$	(42.6	)
	Unrealized gain	—				0.1				—		—			0.1
	Reclassification to earnings	—				(0.1		)		—		0.5			0.4
	Gain arising during the period	—				—				—		2.7			2.7
	Effect of exchange rate changes and deferred taxes	(16.9		)		0.1				—		4.2			(12.6		)
	Balance as of March 31, 2014	$	15			$	0.7			$	6.5	$	(74.2	)	$	(52.0	)
	Balance as of December 31, 2014	$	(40.5	)		$	0.8			$	4.7	$	(124.8	)	$	(159.8	)
	Unrealized gain	—				0.1				—		—			0.1
	Reclassification to earnings	—				(0.1		)		—		1.4			1.3
	Effect of exchange rate changes and deferred taxes	(86.3		)		—				—		4.4			(81.9		)
	Balance as of March 31, 2015	$	(126.8	)		$	0.8			$	4.7	$	(119.0	)	$	(240.3	)
Schedule of reclassifications out of AOCI	Reclassifications out of AOCI during the three months ended March 31, 2015 and 2014 were as follows:
			Three months ended
			March 31,
			2015				2014
			(in millions)
	Unrealized (Gain) Loss on Securities
	Available-for-sale securities(1)		$	(0.1	)		$	(0.1	)
	Total before tax		(0.1		)		(0.1		)
	Tax effect		—				—
	Net of tax		$	(0.1	)		$	(0.1	)
	Defined Benefit Plans
	Amortization of prior service (benefit) cost(2)		$	(0.3	)		$	—
	Amortization of net loss(2)		1.7				0.5
	Total before tax		1.4				0.5
	Tax effect		(0.5		)		(0.2		)
	Net of tax		$	0.9			$	0.3
	Total reclassifications for the period		$	0.8			$	0.2
	_______________________________________________________________________________
	(1)	Represents the amount that was reclassified into interest income.
	(2)	These components are included in the computation of net periodic pension cost and were reclassified from AOCI into cost of sales and selling, general and administrative expenses.

Segment_Disclosures_Tables

Segment Disclosures (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Summary of segment data for sales, cost of sales and gross margin	Segment data for sales, cost of sales and gross margin for the three months ended March 31, 2015 and 2014 are presented in the tables below.
		Ammonia		Granular		UAN(1)		Other(1)		Phosphate		Consolidated
				Urea(1)
		(in millions)
	Three months ended March 31, 2015
	Net sales	$	287.7	$	212.2	$	355.7	$	98	$	—	$	953.6
	Cost of sales	167.8		100.1		197		72.9		—		537.8
	Gross margin	$	119.9	$	112.1	$	158.7	$	25.1	$	—	415.8
	Total other operating costs and expenses											58.3
	Equity in earnings of operating affiliates											9.7
	Operating earnings											$	367.2
	Three months ended March 31, 2014(2)
	Net sales	$	272.4	$	216.2	$	399.9	$	99	$	145.1	$	1,132.60
	Cost of sales	148.1		114.5		217.8		72.8		136.6		689.8
	Gross margin	$	124.3	$	101.7	$	182.1	$	26.2	$	8.5	442.8
	Total other operating costs and expenses											35.9
	Gain on sale of phosphate business											747.1
	Equity in earnings of operating affiliates											15.8
	Operating earnings											$	1,169.80
	_______________________________________________________________________________
	(1)	The cost of ammonia that is upgraded into other products is transferred at cost into the upgraded product results.
	(2)	As discussed in Note 1—Background and Basis of Presentation, in the third quarter of 2014, we changed the composition of our reportable segments. Prior-year results have been recast to conform with the new presentation of reportable segments.

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Statements (Tables)	3 Months Ended
	Mar. 31, 2015
Condensed Consolidating Financial Statements
Schedule of Condensed Consolidating Statements of Operations	Condensed Consolidating Statement of Operations
		Three months ended March 31, 2014
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Net sales	$	—		$	372		$	1,223.00		$	(462.4	)	$	1,132.60
	Cost of sales	—			188.3			963.9			(462.4		)	689.8
	Gross margin	—			183.7			259.1			—			442.8
	Selling, general and administrative expenses	0.7			1.4			39.6			—			41.7
	Other operating—net	—			(0.3		)	(5.5		)	—			(5.8		)
	Total other operating costs and expenses	0.7			1.1			34.1			—			35.9
	Gain on sale of phosphate business	—			761.5			(14.4		)	—			747.1
	Equity in earnings of operating affiliates	—			—			15.8			—			15.8
	Operating (losses) earnings	(0.7		)	944.1			226.4			—			1,169.80
	Interest expense	—			49.4			(9.3		)	(0.1		)	40
	Interest income	—			(0.1		)	(0.2		)	0.1			(0.2		)
	Net (earnings) of wholly-owned subsidiaries	(709.0		)	(151.3		)	—			860.3			—
	Other non-operating—net	—			(0.1		)	—			—			(0.1		)
	Earnings before income taxes and equity in earnings (losses) of non-operating affiliates	708.3			1,046.20			235.9			(860.3		)	1,130.10
	Income tax (benefit) provision	(0.2		)	337.1			76.3			—			413.2
	Equity in (losses) earnings of non-operating affiliates—net of taxes	—			(0.1		)	3.6			—			3.5
	Net earnings	708.5			709			163.2			(860.3		)	720.4
	Less: Net earnings attributable to noncontrolling interest	—			—			11.9			—			11.9
	Net earnings attributable to common stockholders	$	708.5		$	709		$	151.3		$	(860.3	)	$	708.5
	Condensed Consolidating Statement of Operations
		Three months ended March 31, 2015
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Net sales	$	—		$	81.3		$	1,003.80		$	(131.5	)	$	953.6
	Cost of sales	—			81.3			588			(131.5		)	537.8
	Gross margin	—			—			415.8			—			415.8
	Selling, general and administrative expenses	0.8			0.3			39			—			40.1
	Other operating—net	—			(5.2		)	23.4			—			18.2
	Total other operating costs and expenses	0.8			(4.9		)	62.4			—			58.3
	Equity in earnings of operating affiliates	—			—			9.7			—			9.7
	Operating (losses) earnings	(0.8		)	4.9			363.1			—			367.2
	Interest expense	—			64.9			(31.0		)	—			33.9
	Interest income	—			—			(0.4		)	—			(0.4		)
	Net (earnings) of wholly-owned subsidiaries	(231.1		)	(270.7		)	—			501.8			—
	Other non-operating—net	—			0.1			(0.1		)	—			—
	Earnings before income taxes and equity in earnings of non-operating affiliates	230.3			210.6			394.6			(501.8		)	333.7
	Income tax (benefit) provision	(0.3		)	(20.5		)	133.5			—			112.7
	Equity in earnings of non-operating affiliates—net of taxes	—			—			14.9			—			14.9
	Net earnings	230.6			231.1			276			(501.8		)	235.9
	Less: Net earnings attributable to noncontrolling interest	—			—			5.3			—			5.3
	Net earnings attributable to common stockholders	$	230.6		$	231.1		$	270.7		$	(501.8	)	$	230.6
Schedule of Condensed Consolidating Statements of Comprehensive Income	Condensed Consolidating Statement of Comprehensive Income
		Three months ended March 31, 2014
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Net earnings	$	708.5		$	709		$	163.2		$	(860.3	)	$	720.4
	Other comprehensive income (losses)	(9.4		)	(9.4		)	(9.4		)	18.8			(9.4		)
	Comprehensive income	699.1			699.6			153.8			(841.5		)	711
	Less: Comprehensive income attributable to noncontrolling interest	—			—			11.9			—			11.9
	Comprehensive income attributable to common stockholders	$	699.1		$	699.6		$	141.9		$	(841.5	)	$	699.1
	Condensed Consolidating Statement of Comprehensive Income
		Three months ended March 31, 2015
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Net earnings	$	230.6		$	231.1		$	276		$	(501.8	)	$	235.9
	Other comprehensive income (losses)	(80.5		)	(80.5		)	(80.5		)	161			(80.5		)
	Comprehensive income	150.1			150.6			195.5			(340.8		)	155.4
	Less: Comprehensive income attributable to noncontrolling interest	—			—			5.3			—			5.3
	Comprehensive income attributable to common stockholders	$	150.1		$	150.6		$	190.2		$	(340.8	)	$	150.1
Schedule of Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheet
		31-Mar-15
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries			and
											Reclassifications
		(in millions)
	Assets
	Current assets:
	Cash and cash equivalents	$	—		$	58.7		$	1,720.10		$	—		$	1,778.80
	Restricted cash	—			—			63.3			—			63.3
	Accounts and notes receivable—net	—			2,318.20			811.1			(2,962.2		)	167.1
	Inventories	—			—			267.7			—			267.7
	Deferred income taxes	—			—			55.1			—			55.1
	Prepaid income taxes	2.2			2.9			27.7			(5.1		)	27.7
	Other current assets	—			—			20			—			20
	Total current assets	2.2			2,379.80			2,965.00			(2,967.3		)	2,379.70
	Property, plant and equipment—net	—			—			5,925.00			—			5,925.00
	Investments in and advances to affiliates	6,291.10			9,327.00			853.5			(15,618.1		)	853.5
	Due from affiliates	570.7			—			1.7			(572.4		)	—
	Goodwill	—			—			2,090.40			—			2,090.40
	Other assets	—			64.8			171.9			—			236.7
	Total assets	$	6,864.00		$	11,771.60		$	12,007.50		$	(19,157.8	)	$	11,485.30
	Liabilities and Equity
	Current liabilities:
	Accounts and notes payable and accrued expenses	$	2,802.10		$	235.4		$	617.9		$	(2,962.2	)	$	693.2
	Income taxes payable	—			—			84.5			(5.1		)	79.4
	Customer advances	—			—			495.2			—			495.2
	Other current liabilities	—			—			43.5			—			43.5
	Total current liabilities	2,802.10			235.4			1,241.10			(2,967.3		)	1,311.30
	Long-term debt	—			4,592.50			—			—			4,592.50
	Deferred income taxes	—			44.5			738.5			—			783
	Due to affiliates	—			572.4			—			(572.4		)	—
	Other noncurrent liabilities	—			35.6			344.4			—			380
	Equity:
	Stockholders' equity:
	Preferred stock	—			—			16.4			(16.4		)	—
	Common stock	0.5			—			1.1			(1.1		)	0.5
	Paid-in capital	1,426.50			(12.6		)	8,283.50			(8,270.9		)	1,426.50
	Retained earnings	3,334.10			6,544.10			1,266.60			(7,810.7		)	3,334.10
	Treasury stock	(458.9		)	—			—			—			(458.9		)
	Accumulated other comprehensive income (loss)	(240.3		)	(240.3		)	(240.7		)	481			(240.3		)
	Total stockholders' equity	4,061.90			6,291.20			9,326.90			(15,618.1		)	4,061.90
	Noncontrolling interest	—			—			356.6			—			356.6
	Total equity	4,061.90			6,291.20			9,683.50			(15,618.1		)	4,418.50
	Total liabilities and equity	$	6,864.00		$	11,771.60		$	12,007.50		$	(19,157.8	)	$	11,485.30
	Condensed Consolidating Balance Sheet
		31-Dec-14
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries			and
											Reclassifications
		(in millions)
	Assets
	Current assets:
	Cash and cash equivalents	$	—		$	105.7		$	1,890.90		$	—		$	1,996.60
	Restricted cash	—			—			86.1			—			86.1
	Accounts and notes receivable—net	—			2,286.50			651.9			(2,746.9		)	191.5
	Inventories	—			—			202.9			—			202.9
	Deferred income taxes	—			—			84			—			84
	Prepaid income taxes	1.9			—			34.8			(1.9		)	34.8
	Other current assets	—			—			18.6			—			18.6
	Total current assets	1.9			2,392.20			2,969.20			(2,748.8		)	2,614.50
	Property, plant and equipment—net	—			—			5,525.80			—			5,525.80
	Investments in and advances to affiliates	6,212.50			9,208.70			861.5			(15,421.2		)	861.5
	Due from affiliates	570.7			—			1.7			(572.4		)	—
Goodwill	—			—			2,092.80			—			2,092.80
Other assets	—			65.1			178.5			—			243.6
Total assets	$	6,785.10		$	11,666.00		$	11,629.50		$	(18,742.4	)	$	11,338.20
Liabilities and Equity
Current liabilities:
Accounts and notes payable and accrued expenses	$	2,575.40		$	207.7		$	553.8		$	(2,747.0	)	$	589.9
Income taxes payable	—			10.8			7.1			(1.9		)	16
Customer advances	—			—			325.4			—			325.4
Other current liabilities	—			—			48.4			—			48.4
Total current liabilities	2,575.40			218.5			934.7			(2,748.9		)	979.7
Long-term debt	—			4,592.50			—			—			4,592.50
Deferred income taxes	—			34.8			783.8			—			818.6
Due to affiliates	—			572.4			—			(572.4		)	—
Other noncurrent liabilities	—			35.3			339.6			—			374.9
Equity:
Stockholders' equity:
Preferred stock	—			—			16.4			(16.4		)	—
Common stock	0.5			—			1.1			(1.1		)	0.5
Paid-in capital	1,415.90			(12.6		)	8,283.50			(8,270.9		)	1,415.90
Retained earnings	3,175.30			6,384.90			1,067.80			(7,452.7		)	3,175.30
Treasury stock	(222.2		)	—			—			—			(222.2		)
Accumulated other comprehensive income (loss)	(159.8		)	(159.8		)	(160.2		)	320			(159.8		)
Total stockholders' equity	4,209.70			6,212.50			9,208.60			(15,421.1		)	4,209.70
Noncontrolling interest	—			—			362.8			—			362.8
Total equity	4,209.70			6,212.50			9,571.40			(15,421.1		)	4,572.50
Total liabilities and equity	$	6,785.10		$	11,666.00		$	11,629.50		$	(18,742.4	)	$	11,338.20
Schedule of Condensed Consolidating Statements of Cash Flows	Condensed Consolidating Statement of Cash Flows
		Three months ended March 31, 2015
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Operating Activities:
	Net earnings	$	230.6		$	231.1		$	276		$	(501.8	)	$	235.9
	Adjustments to reconcile net earnings to net cash provided by operating activities:
	Depreciation and amortization	—			1.8			113.6			—			115.4
	Deferred income taxes	—			9.7			(9.4		)	—			0.3
	Stock-based compensation expense	3.4			—			0.5			—			3.9
	Excess tax benefit from stock-based compensation	(1.5		)	—			—			—			(1.5		)
	Unrealized gain on derivatives	—			—			(10.6		)	—			(10.6		)
	Loss on disposal of property, plant and equipment	—			—			5.5			—			5.5
	Undistributed (earnings) loss of affiliates—net	(231.1		)	(270.7		)	(18.4		)	501.8			(18.4		)
	Due to/from affiliates—net	1.5			0.3			(1.8		)	—			—
	Changes in:
	Accounts and notes receivable—net	—			18.4			16.7			(11.0		)	24.1
	Inventories	—			—			(68.0		)	—			(68.0		)
	Accrued and prepaid income taxes	(0.2		)	(13.7		)	97.5			—			83.6
	Accounts and notes payable and accrued expenses	—			27.8			(49.4		)	11			(10.6		)
	Customer advances	—			—			169.8			—			169.8
	Other—net	—			0.3			1.2			—			1.5
	Net cash provided by operating activities	2.7			5			523.2			—			530.9
	Investing Activities:
	Additions to property, plant and equipment	—			—			(444.8		)	—			(444.8		)
	Proceeds from sale of property, plant and equipment	—			—			3.3			—			3.3
	Withdrawals from restricted cash funds	—			—			22.8			—			22.8
	Other—net	—			—			(10.9		)	—			(10.9		)
	Net cash used in investing activities	—			—			(429.6		)	—			(429.6		)
	Financing Activities:
	Short-term debt—net	226.3			(50.0		)	(176.3		)	—			—
	Financing fees	—			(2.0		)	—			—			(2.0		)
	Dividends paid on common stock	(71.8		)	(71.8		)	(71.8		)	143.6			(71.8		)
	Distributions to noncontrolling interest	—			—			(11.5		)	—			(11.5		)
	Purchases of treasury stock	(236.2		)	—			—			—			(236.2		)
	Issuances of common stock under employee stock plans	5.7			—			—			—			5.7
	Excess tax benefit from stock-based compensation	1.5			—			—			—			1.5
	Dividends to/from affiliates	71.8			71.8			—			(143.6		)	—
	Net cash used in financing activities	(2.7		)	(52.0		)	(259.6		)	—			(314.3		)
	Effect of exchange rate changes on cash and cash equivalents	—			—			(4.8		)	—			(4.8		)
	Decrease in cash and cash equivalents	—			(47.0		)	(170.8		)	—			(217.8		)
	Cash and cash equivalents at beginning of period	—			105.7			1,890.90			—			1,996.60
	Cash and cash equivalents at end of period	$	—		$	58.7		$	1,720.10		$	—		$	1,778.80
	Condensed Consolidating Statement of Cash Flows
		Three months ended March 31, 2014
		Parent			CF Industries			Other			Eliminations			Consolidated
								Subsidiaries
		(in millions)
	Operating Activities:
	Net earnings	$	708.5		$	709		$	163.2		$	(860.3	)	$	720.4
	Adjustments to reconcile net earnings to net cash provided by operating activities:
	Depreciation and amortization	—			1.6			103.7			—			105.3
	Deferred income taxes	—			—			17.1			—			17.1
	Stock-based compensation expense	3.8			—			—			—			3.8
	Excess tax benefit from stock-based compensation	(4.5		)	—			—			—			(4.5		)
	Unrealized loss on derivatives	—			—			21.9			—			21.9
	Gain on sale of phosphate business	—			(761.5		)	14.4			—			(747.1		)
	Loss on disposal of property, plant and equipment	—			—			0.1			—			0.1
	Undistributed loss (earnings) of affiliates—net	(709.0		)	(151.3		)	(11.4		)	860.3			(11.4		)
	Due to/from affiliates—net	4.5			1.8			(6.3		)	—			—
	Changes in:
	Accounts and notes receivable—net	—			(16.7		)	(278.5		)	327.4			32.2
	Inventories	—			5.6			(117.9		)	—			(112.3		)
Accrued and prepaid income taxes	(0.2		)	337.6			(57.5		)	—			279.9
Accounts and notes payable and accrued expenses	0.1			340.5			54.2			(327.4		)	67.4
Customer advances	—			—			356.8			—			356.8
Other—net	—			(3.6		)	24			—			20.4
Net cash provided by operating activities	3.2			463			283.8			—			750
Investing Activities:
Additions to property, plant and equipment	—			(16.3		)	(376.1		)	—			(392.4		)
Proceeds from sale of property, plant and equipment	—			—			1.3			—			1.3
Proceeds from sale of phosphate business	—			893.1			460.5			—			1,353.60
Deposits to restricted cash funds	—			—			(505.0		)	—			(505.0		)
Withdrawals from restricted cash funds	—			—			5.7			—			5.7
Other—net	—			—			5.8			—			5.8
Net cash provided by (used in) investing activities	—			876.8			(407.8		)	—			469
Financing Activities:
Proceeds from long-term borrowings	—			1,494.20			—			—			1,494.20
Short-term debt—net	764.7			(1,438.8		)	674.1			—			—
Financing fees	—			(15.7		)	—			—			(15.7		)
Dividends paid on common stock	(55.2		)	(55.2		)	(55.2		)	110.4			(55.2		)
Dividends to/from affiliates	55.2			55.2			—			(110.4		)	—
Distributions to noncontrolling interest	—			—			(9.6		)	—			(9.6		)
Purchases of treasury stock	(781.8		)	—			—			—			(781.8		)
Issuances of common stock under employee stock plans	9.4			—			—			—			9.4
Excess tax benefit from stock-based compensation	4.5			—			—			—			4.5
Other—net	—			(1.0		)	(42.0		)	—			(43.0		)
Net cash (used in) provided by financing activities	(3.2		)	38.7			567.3			—			602.8
Effect of exchange rate changes on cash and cash equivalents	—			—			(2.4		)	—			(2.4		)
Increase in cash and cash equivalents	—			1,378.50			440.9			—			1,819.40
Cash and cash equivalents at beginning of period	0.1			20.4			1,690.30			—			1,710.80
Cash and cash equivalents at end of period	$	0.1		$	1,398.90		$	2,131.20		$	—		$	3,530.20

Background_and_Basis_of_Presen1

Background and Basis of Presentation (Details) (USD $)	3 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2015	Mar. 17, 2014
	Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Reportable Segments	5
Mosaic | Phosphate mining and manufacturing business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration		$1.40

Background_and_Basis_of_Presen2

Background and Basis of Presentation (Details 2) (Operating equity method investments, Point Lisas Nitrogen Limited (PLNL))	Mar. 31, 2015
Operating equity method investments | Point Lisas Nitrogen Limited (PLNL)
Equity method investments
Ownership interest (as a percent)	50.00%

Phosphate_Business_Disposition1

Phosphate Business Disposition (Details) (USD $)	3 Months Ended		1 Months Ended	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2014
Phosphate business disposition
Gain on sale of phosphate business	$0	$747,100,000
Share of operating results	50.00%
Phosphate mining and manufacturing business
Phosphate business disposition
Amount of asset retirement obligation trust and escrow funds transferred	200,000,000
Phosphate mining and manufacturing business | Mosaic | Purchase Agreement
Phosphate business disposition
Cash consideration received as per definitive agreement			1,400,000,000
Gain on sale of phosphate business		747,100,000		750,100,000
After tax gain on sale of phosphate business		$461,000,000		$462,800,000

Net_Earnings_Per_Share_Details

Net Earnings Per Share (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net earnings attributable to common stockholders	$230.60	$708.50
Basic earnings per common share:
Weighted-average common shares outstanding	47.9	54.8
Net earnings attributable to common stockholders	$4.81	$12.94
Diluted earnings per common share:
Weighted-average common shares outstanding	47.9	54.8
Dilutive common shares—stock options	0.2	0.1
Diluted weighted-average shares outstanding	48.1	54.9
Net earnings attributable to common stockholders diluted (in dollars per share)	$4.79	$12.90

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]
Finished goods	$244.60	$179.50
Raw materials, spare parts and supplies	23.1	23.4
Total inventories	$267.70	$202.90

Property_Plant_and_EquipmentNe2

Property, Plant and Equipment-Net (Details) (USD $)	3 Months Ended	12 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Property, Plant and Equipment-Net
Gross property plant and equipment	$8,482.10	$8,036.80
Less: Accumulated depreciation and amortization	2,557.10	2,511
Net property, plant and equipment	5,925	5,525.80
Construction in progress expenditures incurred but not yet paid	389.7	279
Accrued expansion project costs	348.3	244.3
Land
Property, Plant and Equipment-Net
Gross property plant and equipment	47.9	48.4
Machinery and equipment
Property, Plant and Equipment-Net
Gross property plant and equipment	5,276	5,268.70
Changes in plant turnaround activity
Balance at the beginning of the period	153.2	119.8	119.8
Additions	26.5		17.1
Depreciation	-13.7		-18.7
Effect of exchange rate changes	-1.7		-0.6
Balance at the end of the period	164.3		117.6
Buildings and improvements
Property, Plant and Equipment-Net
Gross property plant and equipment	159.3	160.7
Construction in progress
Property, Plant and Equipment-Net
Gross property plant and equipment	2,998.90	2,559
Capacity expansion project
Property, Plant and Equipment-Net
Gross property plant and equipment	$2,500	$2,000

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Goodwill
Goodwill, Beginning Balance	$2,092.80
Effect of exchange rate changes	-2.4
Goodwill, Ending Balance	2,090.40
Ammonia
Goodwill
Goodwill, Beginning Balance	578.7
Effect of exchange rate changes	-0.7
Goodwill, Ending Balance	578
Granular Urea
Goodwill
Goodwill, Beginning Balance	829.6
Effect of exchange rate changes	-1
Goodwill, Ending Balance	828.6
UAN
Goodwill
Goodwill, Beginning Balance	577
Effect of exchange rate changes	-0.7
Goodwill, Ending Balance	576.3
Other
Goodwill
Goodwill, Beginning Balance	107.5
Effect of exchange rate changes	0
Goodwill, Ending Balance	$107.50

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets (Details 2) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Identifiable intangibles
Gross Carrying Amount	$60		$60
Accumulated Amortization	-23.9		-18.2
Net	36.1		41.8
Amortization expense	5.7	1
Total estimated amortization expense for the five succeeding fiscal years
Remainder of 2015	2.1
2016	2.8
2017	2.8
2018	2.8
2019	2.8
2020	2.8
Customer relationships
Identifiable intangibles
Gross Carrying Amount	50		50
Accumulated Amortization	-13.9		-13.2
Net	36.1		36.8
Trademarks
Identifiable intangibles
Gross Carrying Amount	10		10
Accumulated Amortization	-10		-5
Net	$0		$5

Equity_Method_Investments_Deta

Equity Method Investments (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Equity method investments
Investments in and advances to affiliates	$853.50		$861.50
Summarized income statement information:
Equity in earnings of operating affiliates	9.7	15.8
Equity in earnings of non-operating affiliates—net of taxes	14.9	3.5
Operating equity method investments
Equity method investments
Investments in and advances to affiliates	376.3		377.6
Summarized income statement information:
Net sales	75.2	75.2
Net earnings	23	24.8
Equity in earnings of operating affiliates	9.7	15.8
Summarized balance sheet information:
Current assets	91		111.2
Noncurrent assets	137.2		130.5
Total assets	228.2		241.7
Current liabilities	25.8		39.4
Noncurrent liabilities	21		22
Equity	181.4		180.3
Total liabilities and equity	228.2		241.7
Non-operating equity method investments
Equity method investments
Investments in and advances to affiliates	477.2		483.9
Summarized income statement information:
Net sales	470.2	570.3
Net earnings	35.3	22.4
Equity in earnings of non-operating affiliates—net of taxes	14.9	3.5
Summarized balance sheet information:
Current assets	523.7		499.8
Noncurrent assets	281.5		298.2
Total assets	805.2		798
Current liabilities	287.9		290.7
Noncurrent liabilities	174.7		186.9
Equity	342.6		320.4
Total liabilities and equity	$805.20		$798

Equity_Method_InvestmentsNarra

Equity Method Investments-Narrative (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Equity method investments
Investments in and advances to affiliates	$853.50		$861.50
Operating equity method investments
Equity method investments
Investments in and advances to affiliates	376.3		377.6
Carrying value of investments in excess of the entity's share of the affiliates' book value	285.6
Operating equity method investments | Point Lisas Nitrogen Limited (PLNL)
Equity method investments
Ownership interest (as a percent)	50.00%
Obligation to purchase ammonia (as a percent)	50% of the ammonia produced by PLNL
Unrecorded unconditional purchase obligation, percent	50.00%
Purchases of ammonia from PLNL	29.6	34
Operating equity method investments | Ammonia storage joint venture
Equity method investments
Ownership interest (as a percent)	50.00%
Operating equity method investments | Maximum | Property, plant and equipment
Equity method investments
Number of years that the increased basis for property, plant and equipment and identifiable intangibles will be amortized	19 years
Operating equity method investments | Maximum | Gas contract
Equity method investments
Number of years that the increased basis for property, plant and equipment and identifiable intangibles will be amortized	9 years
Non-operating equity method investments
Equity method investments
Investments in and advances to affiliates	477.2		483.9
Carrying value of investments in excess of the entity's share of the affiliates' book value	293.5
Carrying value of investments	464.8
Undistributed earnings from equity method investees	22.5
Non-operating equity method investments | KEYTRADE AG
Equity method investments
Ownership interest (as a percent)	50.00%
Percentage rate of debt financing of subordinated notes to Keytrade	1.00%
Amount of outstanding advances	12.4		12.4
Recognized interest income on advances	$0.10	$0.10
Non-operating equity method investments | GrowHow
Equity method investments
Ownership interest (as a percent)	50.00%
Non-operating equity method investments | Maximum | KEYTRADE AG
Equity method investments
Number of years that the increased basis for property, plant and equipment and identifiable intangibles will be amortized	11 years

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Investment
Cash	$62.40	$71.30
Cash and cash equivalents, adjusted cost	1,778.80	1,996.60
Cash and cash equivalents, fair value disclosure	1,778.80	1,996.60
Restricted Cash, adjusted cost	63.3	86.1
Restricted Cash, Fair Value	63.3	86.1
U.S. and Canadian government obligations
Investment
Cash equivalents, adjusted cost	1,691.40	1,916.30
Cash equivalents, fair value	1,691.40	1,916.30
Other debt securities
Investment
Cash equivalents, adjusted cost	25	9
Cash equivalents, fair value	25	9
Nonqualified employee benefit trusts
Investment
Available-for-sale securities, adjusted cost	18.4	17.4
Available-for-sale securities, gross unrealized gain	2.1	2
Available-for-sale securities, fair value	$20.50	$19.40

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 2) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Assets and liabilities measured at fair value on a recurring basis
Restricted cash	$63.30	$86.10
Derivative assets	6.2	0.5
Long-term debt	4,592.50	4,592.50
Fair value of long-term debt, including current portion	5,086.60	4,969.30
Recurring basis | Quoted Prices in Active Markets (Level 1)
Assets and liabilities measured at fair value on a recurring basis
Cash equivalents	1,716.40	1,925.30
Restricted cash	63.3	86.1
Derivative assets	0	0
Nonqualified employee benefit trusts	20.5	19.4
Derivative liabilities	0	0
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets and liabilities measured at fair value on a recurring basis
Cash equivalents	0	0
Restricted cash	0	0
Derivative assets	6.2	0.5
Nonqualified employee benefit trusts	0	0
Derivative liabilities	-43.5	-48.4
Recurring basis | Fair Value, Inputs (Level 3)
Assets and liabilities measured at fair value on a recurring basis
Cash equivalents	0	0
Restricted cash	0	0
Derivative assets	0	0
Nonqualified employee benefit trusts	0	0
Derivative liabilities	0	0
Recurring basis | Total Fair Value
Assets and liabilities measured at fair value on a recurring basis
Cash equivalents	1,716.40	1,925.30
Restricted cash	63.3	86.1
Derivative assets	6.2	0.5
Nonqualified employee benefit trusts	20.5	19.4
Derivative liabilities	($43.50)	($48.40)

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Differences in the expected income tax provision based on statutory rates applied to earnings before income taxes and the income tax provision reflected in the consolidated statements of operations
Income tax provision	$112.70	$413.20
Pre-tax income	333.7	1,130.10
Differences in the expected income tax provision based on statutory rates applied to earnings before income taxes and the income tax provision reflected in the consolidated statements of operations (as a percent)
Effective income tax rate (as a percent)	33.80%	36.60%
Unrecognized tax benefits	135.8
Portion of unrecognized tax benefits, if recognized, would affect the effective tax rate	$97

Interest_Expense_Details

Interest Expense (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest Expense [Abstract]
Interest on borrowings(1)	$63.50	$47.90
Fees on financing agreements(1)	1.4	3.5
Interest on tax liabilities	0.5	1.5
Interest capitalized	-31.5	-12.9
Interest expense	$33.90	$40

Financing_Agreements_Details

Financing Agreements (Details) (USD $)	0 Months Ended	3 Months Ended
	1-May-12	Mar. 31, 2015	Mar. 20, 2015	Dec. 31, 2014	Apr. 22, 2013	1-May-12
Debt Instruments
Long-term debt		$4,592,500,000		$4,592,500,000
Net long-term debt		4,592,500,000		4,592,500,000
Credit Agreement
Debt Instruments
Threshold of Potential Guarantor Obligation		450,000,000
Number of subsidiaries of the parent that provide guarantee		0
CFI
Debt Instruments
Less: Current portion		0		0
Repurchase price of notes as a percentage of principal amount		101.00%
CFI | Credit Agreement
Debt Instruments
Maximum borrowing capacity	500,000,000		1,500,000,000		1,000,000,000	500,000,000
Maturity period	5 years
Variable interest base rate		applicable margin over LIBOR or a base rate
Available credit		1,495,100,000
Outstanding letters of credit		4,900,000
Amount outstanding		0		0
CFI | Unsecured senior notes 6.875% due 2018
Debt Instruments
Long-term debt		800,000,000		800,000,000
Interest rate (as a percent)		6.88%		6.88%
CFI | Unsecured senior notes 7.125% due 2020
Debt Instruments
Long-term debt		800,000,000		800,000,000
Interest rate (as a percent)		7.13%		7.13%
CFI | Senior notes 3.450% due 2023
Debt Instruments
Long-term debt		749,400,000		749,400,000
Interest rate (as a percent)		3.45%		3.45%
CFI | Senior notes 5.150% due 2034
Debt Instruments
Long-term debt		746,200,000		746,200,000
Interest rate (as a percent)		5.15%		5.15%
CFI | Senior notes 4.950% due 2043
Debt Instruments
Long-term debt		748,800,000		748,800,000
Interest rate (as a percent)		4.95%		4.95%
CFI | Senior notes 5.375% due 2044
Debt Instruments
Long-term debt		$748,100,000		$748,100,000
Interest rate (as a percent)		5.38%		5.38%

Noncontrolling_Interests_Detai

Noncontrolling Interests (Details) (TNCLP, USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Noncontrolling interest
Percentage of aggregate ownership held by entity through general and limited partnership	75.30%
Percentage of ownership interest held by outside investors	24.70%
Earnings attributable to general partnership interest in excess of the threshold levels	$20.30	$40.50
Average trading days for which purchase price is greater	20 days
Number of days before announcing purchase price	5 days
Period within which highest price is paid for any unit preceding the date of purchase is announced	90 days
Minimum
Noncontrolling interest
Notice period for making decision to purchase the outstanding units	30 days
Maximum
Noncontrolling interest
Percentage of ownership allowing majority owner to acquire outstanding units	25.00%
Notice period for making decision to purchase the outstanding units	60 days

Noncontrolling_Interests_Detai1

Noncontrolling Interests (Details 2) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Noncontrolling interest
Balance at the beginning of the period	$362.80
Earnings attributable to noncontrolling interest	5.3	11.9
Declaration of distribution payable	-11.5	-9.6
Balance at the end of the period	356.6
TNCLP
Noncontrolling interest
Balance at the beginning of the period	362.8	362.3
Earnings attributable to noncontrolling interest	5.3	11.9
Declaration of distribution payable	-11.5	-9.6
Balance at the end of the period	356.6	364.6
Distributions payable to noncontrolling interest:
Distribution payable to noncontrolling interest, balance at the beginning of the period	0	0
Declaration of distributions payable	11.5	9.6
Distributions to noncontrolling interest	-11.5	-9.6
Distribution payable to noncontrolling interest, balance at the end of the period	$0	$0

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Details)

3 Months Ended

3 Months Ended

Mar. 31, 2015

Mar. 31, 2014

Dec. 31, 2014

Mar. 31, 2015

Dec. 31, 2014

Mar. 31, 2015

Mar. 31, 2014

Mar. 31, 2015

Mar. 31, 2014

Mar. 31, 2015

Mar. 31, 2014

Mar. 31, 2015

USD ($)

USD ($)

USD ($)

Foreign exchange contracts

Foreign exchange contracts

Derivatives not designated as cash flow hedges

Derivatives not designated as cash flow hedges

Derivatives not designated as cash flow hedges

Derivatives not designated as cash flow hedges

Derivatives not designated as cash flow hedges

Derivatives not designated as cash flow hedges

Derivatives designated as cash flow hedges

MMBTU

MMBTU

EUR (€)

EUR (€)

USD ($)

USD ($)

Natural gas derivatives

Natural gas derivatives

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Cost of Sales

Cost of Sales

Other operating - net

Other operating - net

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Fair values of derivatives on consolidated balance sheets

Maximum period covering risk of changes in supply of gas prices

18 months

Open derivative contracts for natural gas (in MMBtus)

77,400,000

58,700,000

Percentage of natural gas consumption covered by derivatives

93.00%

Notional amount of derivative

€ 144,000,000

€ 209,000,000

$0

Unrealized gain (loss) on cash flow hedges, pretax, in AOCI

7,400,000

Derivative, net liability position, aggregate fair value

38,300,000

47,100,000

Cash collateral on deposit with derivative counterparties

0

0

Unrealized gains (losses)

Unrealized Gain (Loss) on Derivatives and Commodity Contracts

16,400,000

-27,500,000

16,400,000

-27,500,000

28,700,000

-22,600,000

-12,300,000

-4,900,000

Realized (losses) gains

-43,700,000

62,000,000

Net derivative (losses) gains

($27,300,000)

$34,500,000

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Details 2) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Fair values of derivatives on consolidated balance sheets
Other current assets	$6.20	$0.50
Other noncurrent assets	0	0
Asset Derivative	6.2	0.5
Other current liabilities	-43.5	-48.4
Other noncurrent liabilities	0	0
Liability derivative	-43.5	-48.4
Foreign exchange contracts | Derivatives not designated as cash flow hedges
Fair values of derivatives on consolidated balance sheets
Other current assets	1.2	0
Other noncurrent assets	0	0
Other current liabilities	-36	-22.4
Other noncurrent liabilities	0	0
Natural gas derivatives | Derivatives not designated as cash flow hedges
Fair values of derivatives on consolidated balance sheets
Other current assets	5	0.5
Other noncurrent assets	0	0
Other current liabilities	-7.5	-26
Other noncurrent liabilities	$0	$0

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Details 3) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross and net amounts presented in consolidated balance sheets, Total derivative assets	$6.20	$0.50
Gross and net amounts presented in consolidated balance sheets, Total derivative liabilities	43.5	48.4
Gross and net amounts presented in consolidated balance sheets, Net assets	-37.3	-47.9
Gross amounts not offset in consolidated balance sheets
Financial instruments, Total derivative assets	5.8	0.5
Financial instruments, Total derivative liabilities	5.8	0.5
Financial instruments, Net assets (liabilities)	0	0
Net Amount, Total derivative assets	0.4	0
Net Amount, Total derivative liabilities	37.7	47.9
Derivative Asset (Liability), Net	($37.30)	($47.90)

Treasury_Stock_Details

Treasury Stock (Details) (USD $)	3 Months Ended			12 Months Ended	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Jun. 30, 2014	Aug. 06, 2014	Sep. 30, 2012
Stock Repurchase Program [Roll Forward]
Beginning balance of treasury stock (in dollars)	$222,200,000
Purchase of treasury stock (in dollars)	236,600,000	794,000,000
Ending balance of treasury stock (in dollars)	458,900,000
Stock repurchase accrued but unpaid	29,600,000		29,100,000	29,100,000
Treasury stock, shares	1,658,165		846,218	846,218
2014 Program
Equity, Class of Treasury Stock [Line Items]
Share repurchase authorized						1,000,000,000
Stock Repurchase Program [Roll Forward]
Beginning balance of accumulated number of shares repurchased (in shares)	1,400,000
Number of shares repurchased (in shares)	800,000		1,400,000	1,400,000
Ending balance of accumulated number of shares repurchased (in shares)	2,200,000		1,400,000	1,400,000
Beginning balance of treasury stock (in dollars)	372,800,000
Purchase of treasury stock (in dollars)	236,600,000		372,800,000	372,800,000
Ending balance of treasury stock (in dollars)	609,400,000		372,800,000	372,800,000
2012 Program
Equity, Class of Treasury Stock [Line Items]
Share repurchase authorized							3,000,000,000
Stock Repurchase Program [Roll Forward]
Beginning balance of accumulated number of shares repurchased (in shares)		7,300,000		7,300,000
Number of shares repurchased (in shares)		3,200,000		6,300,000	3,100,000
Ending balance of accumulated number of shares repurchased (in shares)			13,600,000	13,600,000
Beginning balance of treasury stock (in dollars)		1,449,300,000		1,449,300,000
Purchase of treasury stock (in dollars)		793,900,000		1,550,700,000	756,800,000
Ending balance of treasury stock (in dollars)			$3,000,000,000	$3,000,000,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Changes to accumulated other comprehensive income (loss)
Balance at the beginning of the period	($159.80)	($42.60)
Unrealized gain	0.1	0.1
Reclassification to earnings	1.3	0.4
Gain (loss) arising during period		2.7
Effect of exchange rate changes and deferred taxes	-81.9	-12.6
Balance at the end of the period	-240.3	-52
Foreign Currency Translation Adjustment
Changes to accumulated other comprehensive income (loss)
Balance at the beginning of the period	-40.5	31.9
Effect of exchange rate changes and deferred taxes	-86.3	-16.9
Balance at the end of the period	-126.8	15
Unrealized Gain (Loss) on Securities
Changes to accumulated other comprehensive income (loss)
Balance at the beginning of the period	0.8	0.6
Unrealized gain	0.1	0.1
Reclassification to earnings	-0.1	-0.1
Effect of exchange rate changes and deferred taxes	0	0.1
Balance at the end of the period	0.8	0.7
Unrealized Gain (Loss) on Derivatives
Changes to accumulated other comprehensive income (loss)
Balance at the beginning of the period	4.7	6.5
Unrealized gain	0	0
Reclassification to earnings	0
Effect of exchange rate changes and deferred taxes	0	0
Balance at the end of the period	4.7	6.5
Defined Benefit Plans
Changes to accumulated other comprehensive income (loss)
Balance at the beginning of the period	-124.8	-81.6
Reclassification to earnings	1.4	0.5
Gain (loss) arising during period		2.7
Effect of exchange rate changes and deferred taxes	4.4	4.2
Balance at the end of the period	($119)	($74.20)

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Loss) (Details 2) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Reclassification out of AOCI
Tax effect	($112.70)	($413.20)
Net earnings	235.9	720.4
Amount Reclassified from AOCI
Reclassification out of AOCI
Net earnings	0.8	0.2
Amount Reclassified from AOCI | Unrealized Gain (Loss) on Securities
Reclassification out of AOCI
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	-0.1	-0.1
Total before tax	-0.1	-0.1
Tax effect	0	0
Net earnings	-0.1	-0.1
Amount Reclassified from AOCI | Defined Benefit Plans
Reclassification out of AOCI
Amortization of prior service cost	-0.3	0
Amortization of net loss	1.7	0.5
Total before tax	1.4	0.5
Tax effect	-0.5	-0.2
Net earnings	$0.90	$0.30

Contingencies_Details

Contingencies (Details) (Pending Litigation)	0 Months Ended	3 Months Ended	0 Months Ended
	Apr. 17, 2013	Mar. 31, 2015	Apr. 17, 2015
	People	Litigation_case	Insurance_company
			Entity
			Plaintiff
			People
Loss Contingencies [Line Items]
Number of people killed	15
Number of people injured	200
Number of litigation cases scheduled for trial		3
Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs			400
Number of entities that filed claims			9
Number of people that filed claims			325
Number of insurance companies that filed claims			80

Segment_Disclosures_Details

Segment Disclosures (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Segment data
Net sales	$953.60	$1,132.60
Cost of sales	537.8	689.8
Gross margin	415.8	442.8
Total other operating costs and expenses	58.3	35.9
Gain on sale of phosphate business	0	747.1
Equity in earnings of operating affiliates	9.7	15.8
Operating earnings	367.2	1,169.80
Operating segments | Ammonia
Segment data
Net sales	287.7	272.4
Cost of sales	167.8	148.1
Gross margin	119.9	124.3
Operating segments | Granular Urea
Segment data
Net sales	212.2	216.2
Cost of sales	100.1	114.5
Gross margin	112.1	101.7
Operating segments | UAN
Segment data
Net sales	355.7	399.9
Cost of sales	197	217.8
Gross margin	158.7	182.1
Operating segments | Other
Segment data
Net sales	98	99
Cost of sales	72.9	72.8
Gross margin	25.1	26.2
Operating segments | Phosphate
Segment data
Net sales	0	145.1
Cost of sales	0	136.6
Gross margin	0	8.5
Operating equity method investments
Segment data
Equity in earnings of operating affiliates	$9.70	$15.80
Operating equity method investments | Point Lisas Nitrogen Limited (PLNL)
Segment Reporting [Abstract]
Ownership interest (as a percent)	50.00%

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Statements (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Condensed, Consolidating Statement of Operations
Net sales	$953.60	$1,132.60
Cost of sales	537.8	689.8
Gross margin	415.8	442.8
Selling, general and administrative expenses	40.1	41.7
Other operating—net	18.2	-5.8
Total other operating costs and expenses	58.3	35.9
Gain on sale of phosphate business	0	747.1
Equity in earnings of operating affiliates	9.7	15.8
Operating earnings	367.2	1,169.80
Interest expense	33.9	40
Interest income	-0.4	-0.2
Net (earnings) of wholly-owned subsidiaries	0
Other non-operating—net	0	-0.1
Earnings before income taxes and equity in earnings of non-operating affiliates	333.7	1,130.10
Income tax (benefit) provision	112.7	413.2
Equity in earnings of non-operating affiliates—net of taxes	14.9	3.5
Net earnings	235.9	720.4
Less: Net earnings attributable to noncontrolling interest	5.3	11.9
Net earnings attributable to common stockholders	230.6	708.5
Reportable legal entities | Parent
Condensed, Consolidating Statement of Operations
Selling, general and administrative expenses	0.8	0.7
Other operating—net	0
Total other operating costs and expenses	0.8	0.7
Operating earnings	-0.8	-0.7
Net (earnings) of wholly-owned subsidiaries	-231.1	-709
Other non-operating—net	0
Earnings before income taxes and equity in earnings of non-operating affiliates	230.3	708.3
Income tax (benefit) provision	-0.3	-0.2
Net earnings	230.6	708.5
Net earnings attributable to common stockholders	230.6	708.5
Reportable legal entities | CFI
Condensed, Consolidating Statement of Operations
Net sales	81.3	372
Cost of sales	81.3	188.3
Gross margin	0	183.7
Selling, general and administrative expenses	0.3	1.4
Other operating—net	-5.2	-0.3
Total other operating costs and expenses	-4.9	1.1
Gain on sale of phosphate business		761.5
Equity in earnings of operating affiliates		0
Operating earnings	4.9	944.1
Interest expense	64.9	49.4
Interest income	0	-0.1
Net (earnings) of wholly-owned subsidiaries	-270.7	-151.3
Other non-operating—net	0.1	-0.1
Earnings before income taxes and equity in earnings of non-operating affiliates	210.6	1,046.20
Income tax (benefit) provision	-20.5	337.1
Equity in earnings of non-operating affiliates—net of taxes	0	-0.1
Net earnings	231.1	709
Net earnings attributable to common stockholders	231.1	709
Reportable legal entities | Other Subsidiaries
Condensed, Consolidating Statement of Operations
Net sales	1,003.80	1,223
Cost of sales	588	963.9
Gross margin	415.8	259.1
Selling, general and administrative expenses	39	39.6
Other operating—net	23.4	-5.5
Total other operating costs and expenses	62.4	34.1
Gain on sale of phosphate business		-14.4
Equity in earnings of operating affiliates	9.7	15.8
Operating earnings	363.1	226.4
Interest expense	-31	-9.3
Interest income	-0.4	-0.2
Other non-operating—net	-0.1	0
Earnings before income taxes and equity in earnings of non-operating affiliates	394.6	235.9
Income tax (benefit) provision	133.5	76.3
Equity in earnings of non-operating affiliates—net of taxes	14.9	3.6
Net earnings	276	163.2
Less: Net earnings attributable to noncontrolling interest	5.3	11.9
Net earnings attributable to common stockholders	270.7	151.3
Eliminations
Condensed, Consolidating Statement of Operations
Net sales	-131.5	-462.4
Cost of sales	-131.5	-462.4
Gross margin	0	0
Selling, general and administrative expenses		0
Total other operating costs and expenses		0
Operating earnings	0	0
Interest expense	0	-0.1
Interest income	0	0.1
Net (earnings) of wholly-owned subsidiaries	501.8	860.3
Earnings before income taxes and equity in earnings of non-operating affiliates	-501.8	-860.3
Net earnings	-501.8	-860.3
Less: Net earnings attributable to noncontrolling interest	0	0
Net earnings attributable to common stockholders	($501.80)	($860.30)

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Statements (Details 2) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Condensed, Consolidating Statement of Comprehensive Income
Net earnings	$235.90	$720.40
Other comprehensive income (losses)	-80.5	-9.4
Comprehensive income	155.4	711
Less: Comprehensive income attributable to noncontrolling interest	5.3	11.9
Comprehensive income attributable to common stockholders	150.1	699.1
Reportable legal entities | Parent
Condensed, Consolidating Statement of Comprehensive Income
Net earnings	230.6	708.5
Other comprehensive income (losses)	-80.5	-9.4
Comprehensive income	150.1	699.1
Comprehensive income attributable to common stockholders	150.1	699.1
Reportable legal entities | CFI
Condensed, Consolidating Statement of Comprehensive Income
Net earnings	231.1	709
Other comprehensive income (losses)	-80.5	-9.4
Comprehensive income	150.6	699.6
Comprehensive income attributable to common stockholders	150.6	699.6
Reportable legal entities | Other Subsidiaries
Condensed, Consolidating Statement of Comprehensive Income
Net earnings	276	163.2
Other comprehensive income (losses)	-80.5	-9.4
Comprehensive income	195.5	153.8
Less: Comprehensive income attributable to noncontrolling interest	5.3	11.9
Comprehensive income attributable to common stockholders	190.2	141.9
Eliminations
Condensed, Consolidating Statement of Comprehensive Income
Net earnings	-501.8	-860.3
Other comprehensive income (losses)	161	18.8
Comprehensive income	-340.8	-841.5
Less: Comprehensive income attributable to noncontrolling interest	0	0
Comprehensive income attributable to common stockholders	($340.80)	($841.50)

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Statements (Details 3) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$1,778.80	$1,996.60	$3,530.20	$1,710.80
Restricted cash	63.3	86.1
Accounts and notes receivable—net	167.1	191.5
Inventories	267.7	202.9
Deferred income taxes	55.1	84
Prepaid income taxes	27.7	34.8
Other current assets	20	18.6
Total current assets	2,379.70	2,614.50
Property, plant and equipment—net	5,925	5,525.80
Investments in and advances to affiliates	853.5	861.5
Due from affiliates		0
Goodwill	2,090.40	2,092.80
Other assets	236.7	243.6
Total assets	11,485.30	11,338.20
Current liabilities:
Accounts and notes payable and accrued expenses	693.2	589.9
Income taxes payable	79.4	16
Customer advances	495.2	325.4
Other current liabilities	43.5	48.4
Total current liabilities	1,311.30	979.7
Long-term debt	4,592.50	4,592.50
Deferred income taxes	783	818.6
Due to affiliates		0
Other noncurrent liabilities	380	374.9
Stockholders' equity:
Preferred stock	0	0
Common stock	0.5	0.5
Paid-in capital	1,426.50	1,415.90
Retained earnings	3,334.10	3,175.30
Treasury stock	-458.9	-222.2
Accumulated other comprehensive income (loss)	-240.3	-159.8	-52	-42.6
Total stockholders' equity	4,061.90	4,209.70
Noncontrolling interest	356.6	362.8
Total equity	4,418.50	4,572.50	5,308.30	5,438.40
Total liabilities and equity	11,485.30	11,338.20
Reportable legal entities | Parent
Current assets:
Cash and cash equivalents	0	0	0.1	0.1
Accounts and notes receivable—net	0
Prepaid income taxes	2.2	1.9
Total current assets	2.2	1.9
Investments in and advances to affiliates	6,291.10	6,212.50
Due from affiliates	570.7	570.7
Goodwill		0
Total assets	6,864	6,785.10
Current liabilities:
Accounts and notes payable and accrued expenses	2,802.10	2,575.40
Other current liabilities	0	0
Total current liabilities	2,802.10	2,575.40
Stockholders' equity:
Preferred stock		0
Common stock	0.5	0.5
Paid-in capital	1,426.50	1,415.90
Retained earnings	3,334.10	3,175.30
Treasury stock	-458.9	-222.2
Accumulated other comprehensive income (loss)	-240.3	-159.8
Total stockholders' equity	4,061.90	4,209.70
Noncontrolling interest		0
Total equity	4,061.90	4,209.70
Total liabilities and equity	6,864	6,785.10
Reportable legal entities | CFI
Current assets:
Cash and cash equivalents	58.7	105.7	1,398.90	20.4
Accounts and notes receivable—net	2,318.20	2,286.50
Inventories	0	0
Deferred income taxes		0
Prepaid income taxes	2.9	0
Other current assets		0
Total current assets	2,379.80	2,392.20
Property, plant and equipment—net		0
Investments in and advances to affiliates	9,327	9,208.70
Due from affiliates		0
Other assets	64.8	65.1
Total assets	11,771.60	11,666
Current liabilities:
Accounts and notes payable and accrued expenses	235.4	207.7
Income taxes payable	0	10.8
Customer advances		0
Other current liabilities	0	0
Total current liabilities	235.4	218.5
Long-term debt	4,592.50	4,592.50
Deferred income taxes	44.5	34.8
Due to affiliates	572.4	572.4
Other noncurrent liabilities	35.6	35.3
Stockholders' equity:
Common stock		0
Paid-in capital	-12.6	-12.6
Retained earnings	6,544.10	6,384.90
Treasury stock		0
Accumulated other comprehensive income (loss)	-240.3	-159.8
Total stockholders' equity	6,291.20	6,212.50
Noncontrolling interest		0
Total equity	6,291.20	6,212.50
Total liabilities and equity	11,771.60	11,666
Reportable legal entities | Other Subsidiaries
Current assets:
Cash and cash equivalents	1,720.10	1,890.90	2,131.20	1,690.30
Restricted cash	63.3	86.1
Accounts and notes receivable—net	811.1	651.9
Inventories	267.7	202.9
Deferred income taxes	55.1	84
Prepaid income taxes	27.7	34.8
Other current assets	20	18.6
Total current assets	2,965	2,969.20
Property, plant and equipment—net	5,925	5,525.80
Investments in and advances to affiliates	853.5	861.5
Due from affiliates	1.7	1.7
Goodwill	2,090.40	2,092.80
Other assets	171.9	178.5
Total assets	12,007.50	11,629.50
Current liabilities:
Accounts and notes payable and accrued expenses	617.9	553.8
Income taxes payable	84.5	7.1
Customer advances	495.2	325.4
Other current liabilities	43.5	48.4
Total current liabilities	1,241.10	934.7
Long-term debt		0
Deferred income taxes	738.5	783.8
Other noncurrent liabilities	344.4	339.6
Stockholders' equity:
Preferred stock	16.4	16.4
Common stock	1.1	1.1
Paid-in capital	8,283.50	8,283.50
Retained earnings	1,266.60	1,067.80
Treasury stock		0
Accumulated other comprehensive income (loss)	-240.7	-160.2
Total stockholders' equity	9,326.90	9,208.60
Noncontrolling interest	356.6	362.8
Total equity	9,683.50	9,571.40
Total liabilities and equity	12,007.50	11,629.50
Eliminations
Current assets:
Cash and cash equivalents			0	0
Accounts and notes receivable—net	-2,962.20	-2,746.90
Inventories		0
Prepaid income taxes	-5.1	-1.9
Total current assets	-2,967.30	-2,748.80
Investments in and advances to affiliates	-15,618.10	-15,421.20
Due from affiliates	-572.4	-572.4
Goodwill		0
Total assets	-19,157.80	-18,742.40
Current liabilities:
Accounts and notes payable and accrued expenses	-2,962.20	-2,747
Income taxes payable	-5.1	-1.9
Customer advances		0
Other current liabilities	0	0
Total current liabilities	-2,967.30	-2,748.90
Long-term debt		0
Deferred income taxes	0	0
Due to affiliates	-572.4	-572.4
Stockholders' equity:
Preferred stock	-16.4	-16.4
Common stock	-1.1	-1.1
Paid-in capital	-8,270.90	-8,270.90
Retained earnings	-7,810.70	-7,452.70
Treasury stock		0
Accumulated other comprehensive income (loss)	481	320
Total stockholders' equity	-15,618.10	-15,421.10
Noncontrolling interest		0
Total equity	-15,618.10	-15,421.10
Total liabilities and equity	($19,157.80)	($18,742.40)

Condensed_Consolidating_Financ5

Condensed Consolidating Financial Statements (Details 4) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating Activities:
Net earnings	$235.90	$720.40
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	115.4	105.3
Deferred income taxes	0.3	17.1
Stock-based compensation expense	3.9	3.8
Excess tax benefit from stock-based compensation	-1.5	-4.5
Unrealized loss (gain) on derivatives	-10.6	21.9
Gain on sale of phosphate business	0	-747.1
Loss (gain) on disposal of property, plant and equipment	5.5	0.1
Undistributed (earnings) loss of affiliates—net	-18.4	-11.4
Due to/from affiliates—net		0
Changes in:
Accounts and notes receivable—net	24.1	32.2
Inventories	-68	-112.3
Accrued and prepaid income taxes	83.6	279.9
Accounts and notes payable and accrued expenses	-10.6	67.4
Customer advances	169.8	356.8
Other—net	1.5	20.4
Net cash provided by operating activities	530.9	750
Investing Activities:
Additions to property, plant and equipment	-444.8	-392.4
Proceeds from sale of property, plant and equipment	3.3	1.3
Proceeds from sale of phosphate business	0	1,353.60
Deposits to restricted cash funds	0	-505
Withdrawals from restricted cash funds	22.8	5.7
Other—net	-10.9	5.8
Net cash (used in) provided by investing activities	-429.6	469
Financing Activities:
Proceeds from long-term borrowings	0	1,494.20
Short-term debt—net	0
Financing fees	-2	-15.7
Dividends paid on common stock	-71.8	-55.2
Distributions to noncontrolling interest	-11.5	-9.6
Purchases of treasury stock	-236.2	-781.8
Issuances of common stock under employee stock plans	5.7	9.4
Excess tax benefit from stock-based compensation	1.5	4.5
Dividends to/from affiliates	0	0
Other—net	0	-43
Net cash (used in) provided by financing activities	-314.3	602.8
Effect of exchange rate changes on cash and cash equivalents	-4.8	-2.4
(Decrease) increase in cash and cash equivalents	-217.8	1,819.40
Cash and cash equivalents at beginning of period	1,996.60	1,710.80
Cash and cash equivalents at end of period	1,778.80	3,530.20
Reportable legal entities | Parent
Operating Activities:
Net earnings	230.6	708.5
Adjustments to reconcile net earnings to net cash provided by operating activities:
Deferred income taxes		0
Stock-based compensation expense	3.4	3.8
Excess tax benefit from stock-based compensation	-1.5	-4.5
Loss (gain) on disposal of property, plant and equipment		0
Undistributed (earnings) loss of affiliates—net	-231.1	-709
Due to/from affiliates—net	1.5	4.5
Changes in:
Accounts and notes receivable—net	0	0
Accrued and prepaid income taxes	-0.2	-0.2
Accounts and notes payable and accrued expenses	0	0.1
Net cash provided by operating activities	2.7	3.2
Financing Activities:
Short-term debt—net	226.3	764.7
Financing fees	0
Dividends paid on common stock	-71.8	-55.2
Purchases of treasury stock	-236.2	-781.8
Issuances of common stock under employee stock plans	5.7	9.4
Excess tax benefit from stock-based compensation	1.5	4.5
Dividends to/from affiliates	71.8	55.2
Other—net		0
Net cash (used in) provided by financing activities	-2.7	-3.2
(Decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0.1
Cash and cash equivalents at end of period	0	0.1
Reportable legal entities | CFI
Operating Activities:
Net earnings	231.1	709
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	1.8	1.6
Deferred income taxes	9.7	0
Excess tax benefit from stock-based compensation		0
Unrealized loss (gain) on derivatives		0
Gain on sale of phosphate business		-761.5
Loss (gain) on disposal of property, plant and equipment		0
Undistributed (earnings) loss of affiliates—net	-270.7	-151.3
Due to/from affiliates—net	0.3	1.8
Changes in:
Accounts and notes receivable—net	18.4	-16.7
Inventories	0	5.6
Accrued and prepaid income taxes	-13.7	337.6
Accounts and notes payable and accrued expenses	27.8	340.5
Other—net	0.3	-3.6
Net cash provided by operating activities	5	463
Investing Activities:
Additions to property, plant and equipment	0	-16.3
Proceeds from sale of property, plant and equipment		0
Proceeds from sale of phosphate business		893.1
Net cash (used in) provided by investing activities	0	876.8
Financing Activities:
Proceeds from long-term borrowings		1,494.20
Short-term debt—net	-50	-1,438.80
Financing fees	-2	-15.7
Dividends paid on common stock	-71.8	-55.2
Distributions to noncontrolling interest	0	0
Purchases of treasury stock	0
Issuances of common stock under employee stock plans	0
Excess tax benefit from stock-based compensation	0
Dividends to/from affiliates	71.8	55.2
Other—net		-1
Net cash (used in) provided by financing activities	-52	38.7
Effect of exchange rate changes on cash and cash equivalents		0
(Decrease) increase in cash and cash equivalents	-47	1,378.50
Cash and cash equivalents at beginning of period	105.7	20.4
Cash and cash equivalents at end of period	58.7	1,398.90
Reportable legal entities | Other Subsidiaries
Operating Activities:
Net earnings	276	163.2
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	113.6	103.7
Deferred income taxes	-9.4	17.1
Stock-based compensation expense	0.5	0
Excess tax benefit from stock-based compensation		0
Unrealized loss (gain) on derivatives	-10.6	21.9
Gain on sale of phosphate business		14.4
Loss (gain) on disposal of property, plant and equipment	5.5	0.1
Undistributed (earnings) loss of affiliates—net	-18.4	-11.4
Due to/from affiliates—net	-1.8	-6.3
Changes in:
Accounts and notes receivable—net	16.7	-278.5
Inventories	-68	-117.9
Accrued and prepaid income taxes	97.5	-57.5
Accounts and notes payable and accrued expenses	-49.4	54.2
Customer advances	169.8	356.8
Other—net	1.2	24
Net cash provided by operating activities	523.2	283.8
Investing Activities:
Additions to property, plant and equipment	-444.8	-376.1
Proceeds from sale of property, plant and equipment	3.3	1.3
Proceeds from sale of phosphate business		460.5
Deposits to restricted cash funds		-505
Withdrawals from restricted cash funds	22.8	5.7
Other—net	-10.9	5.8
Net cash (used in) provided by investing activities	-429.6	-407.8
Financing Activities:
Proceeds from long-term borrowings		0
Short-term debt—net	-176.3	674.1
Financing fees	0	0
Dividends paid on common stock	-71.8	-55.2
Distributions to noncontrolling interest	-11.5	-9.6
Purchases of treasury stock	0	0
Issuances of common stock under employee stock plans	0
Excess tax benefit from stock-based compensation	0
Dividends to/from affiliates	0
Other—net		-42
Net cash (used in) provided by financing activities	-259.6	567.3
Effect of exchange rate changes on cash and cash equivalents	-4.8	-2.4
(Decrease) increase in cash and cash equivalents	-170.8	440.9
Cash and cash equivalents at beginning of period	1,890.90	1,690.30
Cash and cash equivalents at end of period	1,720.10	2,131.20
Eliminations
Operating Activities:
Net earnings	-501.8	-860.3
Adjustments to reconcile net earnings to net cash provided by operating activities:
Loss (gain) on disposal of property, plant and equipment		0
Undistributed (earnings) loss of affiliates—net	501.8	860.3
Changes in:
Accounts and notes receivable—net	-11	327.4
Accounts and notes payable and accrued expenses	11	-327.4
Other—net		0
Net cash provided by operating activities	0
Financing Activities:
Dividends paid on common stock	143.6	110.4
Dividends to/from affiliates	-143.6	-110.4
Net cash (used in) provided by financing activities		0
(Decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period		0
Cash and cash equivalents at end of period		$0

Subsequent_Event_Details

Subsequent Event (Details) (USD $)	3 Months Ended			12 Months Ended	1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Apr. 30, 2015	Aug. 06, 2014
Subsequent Event [Line Items]
Purchase of treasury stock (in dollars)	$236,600,000	$794,000,000
Treasury Stock, Value	458,900,000		222,200,000	222,200,000
TNCLP
Subsequent Event [Line Items]
Percentage of aggregate ownership held by entity through general and limited partnership	75.30%
2014 Program
Subsequent Event [Line Items]
Number of shares repurchased (in shares)	800,000		1,400,000	1,400,000
Purchase of treasury stock (in dollars)	236,600,000		372,800,000	372,800,000
Share repurchase authorized						1,000,000,000
Accumulated number of shares repurchased (in shares)	2,200,000		1,400,000	1,400,000
Treasury Stock, Value	609,400,000		372,800,000	372,800,000
2014 Program | Subsequent Event
Subsequent Event [Line Items]
Number of shares repurchased (in shares)					500,000
Purchase of treasury stock (in dollars)					140,600,000
Accumulated number of shares repurchased (in shares)					2,700,000
Treasury Stock, Value					$750,000,000