10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

x    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended May 31, 2013

¨    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from          to         

Commission file number 001-32327

The Mosaic Company

(Exact name of registrant as specified in its charter)

Delaware	20-1026454
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

3033 Campus Drive

Suite E490

Plymouth, Minnesota 55441

(800) 918-8270

(Address and zip code of principal executive offices and registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Stock, par value $0.01 per share	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: NONE

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer”, and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one): Large accelerated filer x Accelerated filer  ¨    Non-accelerated filer  ¨    Smaller reporting company  ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

As of November 30, 2012, the aggregate market value of the registrant’s voting common stock held by stockholders, other than directors, executive officers, subsidiaries of the Registrant and any other person known by the Registrant as of the date hereof to beneficially own ten percent or more of any class of Registrant's outstanding voting common stock, and consisting of shares of Common Stock and Class A Common Stock, was approximately $20.1 billion based upon the closing price of a share of Common Stock on the New York Stock Exchange on that date.

Indicate the number of shares outstanding of each of the registrant’s classes of common stock: 297,061,272 shares of Common Stock, 128,759,772 shares of Class A Common Stock and 0 shares of Class B Common Stock, each par value $0.01 per share, as of July 12, 2013.

DOCUMENTS INCORPORATED BY REFERENCE

1. Portions of the registrant’s definitive proxy statement to be delivered in conjunction with the 2013 Annual Meeting of Stockholders (Part III)

2013 FORM 10-K CONTENTS

Part I:		Page
Item 1.	Business		1
	•         Overview		1
	•         Business Segment Information		5
	•         Sales and Distribution Activities		22
	•         Competition		23
	•         Factors Affecting Demand		25
	•         Other Matters		25
	•         Executive Officers		26
Item 1A.	Risk Factors		28
Item 1B.	Unresolved Staff Comments		48
Item 2.	Properties		48
Item 3.	Legal Proceedings		48
Item 4.	Mine Safety Disclosures		50
Part II:
Item 5.	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		51
Item 6.	Selected Financial Data		51
Item 7.	Management's Discussion and Analysis of Financial Condition and Results of Operations		52
Item 7A.	Quantitative and Qualitative Disclosures about Market Risk		52
Item 8.	Financial Statements and Supplementary Data		52
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure		52
Item 9A.	Controls and Procedures		52
Item 9B.	Other Information		53
Part III:
Item 10.	Directors, Executive Officers and Corporate Governance		54
Item 11.	Executive Compensation		54
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		54
Item 13.	Certain Relationships and Related Transactions, and Director Independence		54
Item 14.	Principal Accounting Fees and Services		54
Part IV.
Item 15.	Exhibits and Financial Statement Schedules		55
Signatures			S-1
Exhibit Index			E-1
Financial Table of Contents			F-1

PART I.

Item 1. Business.

OVERVIEW

The Mosaic Company is the world’s leading producer and marketer of concentrated phosphate and potash crop nutrients. We are the largest integrated phosphate producer in the world and one of the largest producers and marketers of phosphate-based animal feed ingredients in the United States. We are the fourth largest producer of potash in the world. Through our broad product offering, we are a single source supplier of phosphate-and potash-based crop nutrients and animal feed ingredients. We serve customers in approximately 40 countries. We mine phosphate rock in Florida and process rock into finished phosphate products at facilities in Florida and Louisiana. We mine potash in Saskatchewan, New Mexico and Michigan. We have other production, blending or distribution operations in Brazil, China, India, Argentina, and Chile, and a strategic equity investment in a phosphate rock mine in the Bayovar region in Peru. Our operations serve the top four nutrient-consuming countries in the world.

The Mosaic Company is a Delaware corporation that was incorporated in March 2004 and serves as the parent company of the business that was formed through the October 2004 combination of IMC Global Inc. and the fertilizer businesses of Cargill, Incorporated. On May 25, 2011, we consummated the first in a series of transactions intended to result in the split-off and orderly distribution of Cargill, Incorporated’s then approximately 64% equity interest in us through a series of public offerings. Further information regarding this transaction is described under “Cargill Transaction” in this report. We are publicly traded on the New York Stock Exchange under the ticker symbol “MOS” and are headquartered in Plymouth, Minnesota.

We conduct our business through wholly and majority-owned subsidiaries as well as businesses in which we own less than a majority or a non-controlling interest. We are organized into two reportable business segments: Phosphates and Potash. The following charts show the respective contributions to fiscal 2013 sales volumes, net sales and operating earnings for each of these business segments:

Phosphates Segment — We are the largest integrated phosphate producer in the world and the largest producer and marketer of phosphate-based animal feed ingredients in the United States. We sell phosphate-based crop nutrients and animal feed ingredients throughout North America and internationally. Our Phosphates segment also includes our international distribution activities. Our distribution activities include sales offices, port terminals and warehouses in the United States, Canada, and several other key international countries. In addition,

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the international distribution activities include blending, bagging and production facilities in Brazil, China, India, Argentina and Chile. We accounted for approximately 12% of estimated global production and 59% of estimated North American production of concentrated phosphate crop nutrients during fiscal 2013.

Potash Segment — We are the fourth-largest producer of potash in the world. We sell potash throughout North America and internationally, principally as fertilizer, but also for use in industrial applications and, to a lesser degree, as animal feed ingredients. We accounted for approximately 13% of estimated global potash production and 42% of estimated North American potash production during fiscal 2013.

As used in this report:

• “Mosaic” means The Mosaic Company, both before and after the Merger;

• “GNS” means the company known as GNS II (U.S.) Corp. until it was renamed The Mosaic Company in connection with the Merger;

• “MOS Holdings” means the company known as The Mosaic Company until it was renamed MOS Holdings Inc. in connection with the Merger;

• “we”, “us”, and “our” refer to Mosaic and its direct and indirect subsidiaries, individually or in any combination;

• “IMC” means IMC Global Inc.;

• “Cargill” means Cargill, Incorporated and its direct and indirect subsidiaries, individually or in any combination;

• “Cargill Crop Nutrition” means the crop nutrient business we acquired from Cargill in the Combination;

• “Combination” means the October 22, 2004 combination of IMC and Cargill Crop Nutrition;

• “Cargill Transaction” means the transactions described below under “Cargill Transaction”;

• “MAC Trusts” means the Margaret A. Cargill foundation established under the Acorn Trust dated January 30, 1995, as amended, and the Anne Ray Charitable Trust dated August 20, 1996, as amended;

• “Merger” means a Merger that occurred on May 25, 2011 as part of the transaction described below under “Cargill Transaction.” The Merger was between a subsidiary of GNS and MOS Holdings and had the effect of recapitalizing our Common Stock and making GNS the parent company of MOS Holdings. Prior to the Merger, GNS was a wholly-owned subsidiary of the company then known as The Mosaic Company. In the Merger, all of the outstanding stock of MOS Holdings was converted, on a one-for-one basis, into GNS stock. In connection with the Merger, the company formerly known as The Mosaic Company was renamed MOS Holdings Inc. and GNS was renamed The Mosaic Company. Following the Merger, our common stock continues to trade under the ticker symbol MOS;

• references in this report to a particular fiscal year are to the twelve months ended May 31 of that year; and

• “tonne” or “tonnes” means a metric tonne or tonnes of 2,205 pounds each unless we specifically state that we mean short or long tons.

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Cargill Transaction

In fiscal 2011, Cargill divested its interest in us in a split-off (the “Split-off”) to its stockholders (the “Exchanging Cargill Stockholders”), including the MAC Trusts, and a debt exchange (the “Debt Exchange”) with certain Cargill debt holders (the “Exchanging Cargill Debt Holders”). The agreements relating to the Cargill Transaction contemplated an orderly distribution of the approximately 64% (285.8 million) of our shares that Cargill formerly held. Following the Split-off and Debt Exchange, the MAC Trusts and Exchanging Cargill Debt Holders sold an aggregate of 157.0 million of these shares in underwritten public secondary offerings or to us. These transactions completed the disposition of shares designated to be sold during the 15-month period following the Split-off.

All other shares (approximately 128.8 million shares in the aggregate) of our Class A Common Stock (“Class A Shares”) received by the Exchanging Cargill Stockholders in the Split-off are generally subject to transfer restrictions unless we consent. These transfer restrictions are removed as the Class A Shares convert to regular Common Stock. A conversion of the Class A Shares into regular Common Stock would occur in three equal annual installments beginning on November 26, 2013 or if they are sold in one of the registered public secondary offerings described in the next sentence. In each of the calendar years 2013 through 2015, the MAC Trusts have an opportunity, from May 26 to June 26, to request that we register these shares for sale in an underwritten public secondary offering that could occur during the period May 26 through October 26. If such a request is made, or if we voluntarily offer to do so, we would effect such a registration for holders of Class A Shares who elect to participate. The maximum number of shares that would be included in each such offering would be determined by the lead underwriter chosen by us for such offering.

The agreements relating to the Cargill Transaction continue to restrict our ability to engage in share buybacks other than self-tender offers to all of our stockholders, including holders of Class A Shares, complying with Rule 13e-4 under the Securities Exchange Act of 1934. The restriction on share buybacks applies until November 26, 2013. A self-tender offer would require us to offer the same price to all holders of Class A Shares and Common Stock even though we are prohibited from purchasing Class A Shares at a premium to the volume-weighted average trading price of our Common Stock for the prior twenty trading days.

After May 26, 2013, we engaged in discussions with Cargill and the MAC Trusts regarding the disposition of the Class A Shares, including a potential share repurchase transaction. In connection with these discussions, we, with the MAC Trusts' support, requested that Cargill amend the split-off agreement to allow for a negotiated repurchase of Class A Shares prior to November 26, 2013. After considering the request, Cargill declined to amend the agreement to allow for earlier share repurchases. As a result, we are not permitted to engage in open market or negotiated share repurchases until after November 26, 2013. The only practical means for holders of the Class A Shares to dispose of their shares prior to that date would be through an underwritten public secondary offering, which could only be initiated by the MAC Trusts prior to June 26, 2013 or by us thereafter. After considering their alternatives, the MAC Trusts notified us that they would not exercise their first right to request an underwritten public secondary offering, that would occur during the period May 26, 2013 through October 26, 2013. We look forward to initiating share repurchases after November 26, 2013. At that time, depending on market conditions and sellers' interest, we will consider the repurchase of shares either in a negotiated transaction with the holders of the Class A Shares or through open market repurchases.

We have included additional information about the Cargill Transaction in Note 2 of our Consolidated Financial Statements and in response to Item 13 of Part III of this report, which information is incorporated herein by reference, and the principal transaction documents related to the Cargill Transaction are incorporated by reference as exhibits to this report.

Other Business Developments during Fiscal 2013

We continue to execute on our strategic and other priorities. During fiscal year 2013, we concluded an extensive strategy review, establishing the following strategic priorities: people, growth, market access and innovation in

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order to accomplish our ultimate strategic priority of creating value for shareholders. In fiscal 2013, we took the following steps toward achieving our objectives:

• People: Invest in people so that Mosaic is a company where people want to work and grow

• We continue to improve on safety performance, setting a new record low for our injury frequency rate from last fiscal year’s record performance.

• Growth: Grow our production of essential crop nutrients and operate with increasing efficiency

• On March 19, 2013, we entered into a Heads of Agreement with Saudi Arabian Mining Company (“Ma’aden”) and Saudi Basic Industries Corporation (“SABIC”) under which the parties intend to form a joint venture (the “Northern Promise Joint Venture”) to develop integrated phosphate production facilities in the Kingdom of Saudi Arabia. We would own 25% of the joint venture and market approximately 25% of the production of the joint venture. When completed, the project is expected to offer an additional source of phosphate crop nutrients and feed as well as facilitate access to key customers in India and Asia. Completion of a definitive shareholders agreement is ongoing.

• We continued the expansion of capacity in our Potash segment, in line with our view of the long-term fundamentals of increasing global demand in that business. From the inception of our brownfield expansions, our plans provide for an increase in our annual operational capacity for finished product by approximately five million tonnes. We have deferred construction on approximately two million tonnes of capacity until such time as construction costs moderate and we believe we are able to achieve higher expected returns on our investment.

• We ended our obligation to supply potash from our Esterhazy mine under a tolling agreement (the “Tolling Agreement”) at the end of calendar 2012. In addition, effective December 31, 2012, we received credit for 1.2 million tonnes of potash capacity at our Esterhazy mine for purposes of calculating our relative share of annual sales of potash to Canpotex Limited (“Canpotex”), increasing our allocation from 37.1% to 43.0%. We have been notified by Canpotex that our entitlement is being changed effective July 1, 2013 to approximately 40% as a result of a recent change in the members’ respective peaking capacities.

• Annual operational capacity at the Miski Mayo mine, of which we own 35% through a joint venture, is expected to reach 3.5 million tonnes by the end of calendar 2013.

• Market Access: Expand our reach and impact by continuously strengthening our distribution network

• It is important that we have access to distribution facilities in key growing geographies, and we will accomplish that through our distribution relationships, and our own internal distribution network. For example, we intend to invest up to $300 million in Brazil – a key growth region and strategically important country – over the next five years.

• Innovation: Build on our industry-leading product, process and sustainability innovations

• We set a new record for sales of the premium product MicroEssentials^® (“MES”). MES sales increased approximately 28% in the current fiscal year from the prior fiscal year. We believe our premium products provide us a competitive advantage with customers in North and South America.

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• Total Shareholder return: Deliver strong financial performance and provide meaningful returns to our shareholders

• Beginning with the dividend paid in August 2012, we increased our annual dividend 100%, to $1.00 per share, from the level of $0.50 per share announced in February 2012.

• Fiscal Year Change

• On December 17, 2012, we announced that we will change our fiscal year end to December 31 from May 31. We will begin reporting quarterly results on a calendar-year basis with the quarter ending on September 30, 2013 and report results for a transition period of June 1 to December 31, 2013. Our first full calendar reporting year will be 2014. Unless otherwise noted, fiscal year as used in this report refers to the twelve months ended May 31.

We have included additional information about these and other developments in our business during fiscal 2013 in our Management’s Discussion and Analysis of Financial Condition and Results of Operations (“Management’s Analysis”) and in the Notes to our Consolidated Financial Statements.

BUSINESS SEGMENT INFORMATION

The discussion below of our business segment operations should be read in conjunction with the following information that we have included in this report:

• The risk factors discussed in this report in Part I, Item 1A, “Risk Factors.”

• Our Management’s Analysis.

• The financial statements and supplementary financial information in our Consolidated Financial Statements (“Consolidated Financial Statements”). This information is incorporated by reference in this report in Part II, Item 8, “Financial Statements and Supplementary Data.”

Phosphates Segment

Our Phosphates business segment owns and operates mines and production facilities in Florida which produce concentrated phosphate crop nutrients and phosphate-based animal feed ingredients, and processing plants in Louisiana which produce concentrated phosphate crop nutrients. Our Phosphates segment’s results include our international distribution activities in addition to the consolidated results of Phosphate Chemicals Export Association, Inc. (“PhosChem”), a U.S. Webb-Pomerene Act association of phosphate producers which exports concentrated phosphate crop nutrient products around the world for us and PhosChem’s other member.

U.S. Phosphate Crop Nutrients and Animal Feed Ingredients

Our U.S. phosphates operations have capacity to produce approximately 4.3 million tonnes of phosphoric acid (“P₂O₅”) per year, or about 8% of world capacity and about 46% of North American capacity. Phosphoric acid is produced by reacting finely ground phosphate rock with sulfuric acid. Phosphoric acid is the key building block for the production of high analysis or concentrated phosphate crop nutrients and animal feed products, and is the most comprehensive measure of phosphate capacity and production and a commonly used benchmark in our industry. Our U.S. phosphoric acid production totaled approximately 3.8 million tonnes during fiscal 2013 and accounted for approximately 9% of estimated global production and 46% of estimated North American output during fiscal 2013.

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Our phosphate crop nutrient products are marketed worldwide to crop nutrient manufacturers, distributors and retailers. Our principal phosphate crop nutrient products are:

• Diammonium Phosphate (18-46-0) Diammonium Phosphate (“DAP”) is the most widely used high-analysis phosphate crop nutrient worldwide. DAP is produced by first combining phosphoric acid with anhydrous ammonia. This initial reaction creates a slurry that is then pumped into a granulation plant where it is reacted with additional ammonia to produce DAP. DAP is a solid granular product that is applied directly or blended with other solid plant nutrient products such as urea and potash.

• Monoammonium Phosphate (11-52-0) Monoammonium Phosphate (“MAP”) is the second most widely used high-analysis phosphate crop nutrient and the fastest growing phosphate product worldwide. MAP is also produced by first combining phosphoric acid with anhydrous ammonia in a reaction vessel. The resulting slurry is then pumped into the granulation plant where it is reacted with additional phosphoric acid to produce MAP. MAP is a solid granular product that is applied directly or blended with other solid plant nutrient products.

• MicroEssentials^® is a value-added ammoniated phosphate product that is enhanced through a patented process that creates very thin platelets of sulfur and other micronutrients, such as zinc, on the granulated product. The patented process incorporates both the sulfate and elemental forms of sulfur, providing season long availability to crops.

Production of our animal feed ingredients products is located at our New Wales, Florida facility. We market our feed phosphate primarily under the leading brand names of Biofos^® and Nexfos^®.

Our primary phosphate crop nutrient production facilities are located in central Florida and Louisiana. The following map shows the locations of each of our phosphate concentrates plants in the United States and the locations of each of our active and planned phosphate mines in Florida:

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Annual capacity by plant as of May 31, 2013 and production volumes by plant for fiscal 2013 are listed below:

(tonnes in millions)	Phosphoric Acid				Processed Phosphate(a)/DAP/MAP/ MicroEssentials® /Feed Phosphate
Facility	Operational Capacity(b)		Production		Operational Capacity(b)		Production
Florida:
Bartow		0.9		0.9		2.2		2.0
New Wales		1.7		1.5		4.1		3.3
Riverview		0.9		0.8		1.8		1.8
		3.5		3.2		8.1		7.1
Louisiana:
Faustina		-		-		1.6		1.1
Uncle Sam		0.8		0.6		-		-
		0.8		0.6		1.6		1.1
Total		4.3		3.8		9.7		8.2

^(a)  Our ability to produce processed phosphates has been less than our operational capacity stated in the table above, except to the extent we purchase phosphoric acid.

^(b)  Actual production varies from that shown in the above table due to factors that include among others the level of demand for our products, maintenance and turnaround time, accidents, mechanical failure, product mix, and other operating conditions.

The phosphoric acid produced at Uncle Sam is shipped to Faustina, where it is used to produce DAP and MAP. Our Faustina plant also manufactures ammonia that is mostly consumed in our concentrate plants.

We produced approximately 7.6 million tonnes of concentrated phosphate crop nutrients for fiscal 2013 and accounted for roughly 12% of estimated world output and 59% of estimated North American production.

Phosphate Rock

Phosphate rock is the key mineral used to produce phosphate crop nutrients and feed phosphate. Our phosphate rock production totaled approximately 15.4 million tonnes in fiscal 2013 and accounted for approximately 8% of estimated world production and 49% of estimated North American production. We are the world’s second largest miner of phosphate rock and currently operate four mines with a combined annual capacity of approximately 16.0 million tonnes. Production of one tonne of DAP requires between 1.6 and 1.7 tonnes of phosphate rock.

All of our wholly owned phosphate mines and related mining operations are located in central Florida. During fiscal 2013, we operated four active mines: Four Corners, South Fort Meade, Hookers Prairie and Wingate. We plan to develop two large mines at Ona and at DeSoto to replace mines that will be depleted at various times during the next decade.

The phosphate deposits of Florida are of sedimentary origin and are part of a phosphate-bearing province that extends from southern Florida north along the Atlantic coast into southern Virginia. Our active phosphate mines are primarily located in what is known as the Bone Valley Member of the Peace River Formation in the Central Florida Phosphate District. The southern portions of the Four Corners and Wingate mines are in what is referred to as the Undifferentiated Peace River Formation, in which our future Ona and DeSoto mines would also be

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located. Phosphate mining has been conducted in the Central Florida Phosphate District since the late 1800’s. The potentially mineable portion of the district encompasses an area approximately 80 miles in length in a north-south direction and approximately 40 miles in width.

We extract phosphate ore using large surface mining machines that we own called “draglines.” Prior to extracting the ore, the draglines must first remove a 10 to 50 foot layer of sandy overburden. At our Wingate mine, we also utilize dredges to remove the overburden and mine the ore. We then process the ore at beneficiation plants that we own at each active mine where the ore goes through washing, screening, sizing and flotation processes designed to separate the phosphate rock from sands, clays and other foreign materials. Prior to commencing operations at any of our planned future mines, we would need to acquire new draglines or move existing draglines to the mines and, unless the beneficiation plant at an existing mine were used, construct a beneficiation plant.

The following table shows, for each of our phosphate mines, annual capacity as of May 31, 2013 and rock production volume and grade for the past three fiscal years:

(tonnes in millions)	Annual Operational Capacity(a)		2013						2012						2011
Facility			Production		Average BPL(b)		% P2O5(c)		Production(d)		Average BPL(b)		% P2O5(c)		Production(d)		Average BPL(b)		% P2O5(c)
Four Corners		7.0		6.4		64.5		29.5		7.4		64.1		29.3		6.7		65.5		30.0
South Fort Meade		5.5		5.5		64.2		29.4		1.2		65.6		30.0		1.8		63.7		29.2
Hookers Prairie(e)		2.0		2.0		65.6		30.0		2.1		65.9		30.2		1.8		65.8		30.1
Wingate		1.5		1.5		61.8		28.3		1.4		62.8		28.7		1.0		64.6		29.6
Hopewell(f)		-		-		-		-		-		-		-		0.2		66.5		30.4
Total		16.0		15.4		64.4		29.5		12.1		64.4		29.5		11.5		65.2		29.8

^(a)  Actual production varies from annual operational capacity shown in the above table due to factors that include among others the level of demand for our products, the quality of the reserves, the nature of the geologic formations we are mining at any particular time, maintenance and turnaround time, accidents, mechanical failure, weather conditions, and other operating conditions, as well as the effect of recent initiatives intended to improve operational excellence.

^(b)  Bone Phosphate of Lime (“BPL”) is a traditional reference to the amount (by weight percentage) of calcium phosphate contained in phosphate rock or a phosphate ore body. A higher BPL corresponds to a higher percentage of calcium phosphate.

^(c)  The percent of P₂O₅ in the above table represents a measure of the phosphate content in phosphate rock or a phosphate ore body. A higher percentage corresponds to a higher percentage of phosphate content in phosphate rock or a phosphate ore body.

^(d)  Production at the South Fort Meade mine reflects the temporary shutdown during most of the first six months of fiscal 2011 and subsequently reduced production level for the remainder of that fiscal year and all of fiscal 2012 as a result of the preliminary injunctions entered in connection with court proceedings over the federal wetlands permit for the extension of our South Fort Meade, Florida, phosphate rock mine into Hardee County (the “Hardee County Extension Permit Litigation”).

^(e)  We expect to exhaust the Hookers Prairie mine’s reserves in calendar 2014.

^(f)  The Hopewell mine’s reserves were exhausted in January 2011.

We also purchase phosphate rock. The level of our purchases of phosphate rock in the future will depend upon, among other factors, our phosphate rock mining plans, the status of our permits, our need for additional phosphate rock to allow us to operate our concentrates plants at or near full capacity, the quality and level of

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impurities in the phosphate rock that we mine, and our development or acquisition of additional phosphate rock deposits and mines. Depending on product mix and tonnage requirements, our need for purchased phosphate rock could increase in the future in order to meet product specifications, particularly as we develop our proposed Ona and DeSoto mines.

Reserves

We estimate our phosphate rock reserves based upon exploration core drilling as well as technical and economic analyses to determine that reserves can be economically mined. Proven (measured) reserves are those resources of sufficient concentration to meet minimum physical, chemical and economic criteria related to our current product standards and mining and production practices. Our estimates of probable (indicated) reserves are based on information similar to that used for proven reserves, but sites for drilling are farther apart or are otherwise less adequately spaced than for proven reserves, although the degree of assurance is high enough to assume continuity between such sites. Proven reserves are determined using a minimum drill hole spacing of two sites per 40 acre block. Probable reserves have less than two drill holes per 40 acre block, but geological data provides a high degree of assurance that continuity exists between sites.

The following table sets forth our proven and probable phosphate reserves as of May 31, 2013:

(tonnes in millions)	Reserve Tonnes (a)  (b) (c)			Average  BPL(d)		% P2O5
Active Mines
Four Corners		52.6			63.9		29.2
South Fort Meade		44.0			64.4		29.5
Hookers Prairie		2.7	(e)		65.5		30.0
Wingate		37.8			63.2		28.9
Total Active Mines		137.1			63.9		29.2
Planned Mining
Ona		245.5			63.5		29.0
DeSoto		149.6	(f)		64.6		29.5
Total Planned Mining		395.1			63.9		29.2
Total Mining		532.2			63.9		29.2

^(a)  Reserves are in areas that are fully accessible for mining; free of surface or subsurface encumbrance, legal setbacks, wetland preserves and other legal restrictions that preclude permittable access for mining; believed by us to be permittable; and meet specified minimum physical, economic and chemical criteria related to current mining and production practices.

^(b)  Reserve estimates are generally established by our personnel without a third party review. There has been no third party review of reserve estimates within the last five years, except that in fiscal 2008, we engaged a third party to review the recoverable reserves at our Wingate mine’s Tract 2 pursuant to contractual requirements related to our acquisition of these reserves. The reserve estimates have been prepared in accordance with the standards set forth in Industry Guide 7 promulgated by the United States Securities and Exchange Commission (“SEC”).

^(c)  Of the reserves shown, 498.7 million tonnes are proven reserves, while probable reserves totaled 33.5 million tonnes.

^(d)  Average product BPL ranges from approximately 63% to 66%.

^(e)  Of the tonnes shown at Hookers Prairie, our lease of 0.8 million tonnes requires us to pay royalties of $2.00 per short ton of the reserves that we mine. In addition, our lease of 0.4 million tonnes requires us to pay royalties between $1.25 to $1.35 per short ton. We estimate that Hookers Prairie mine’s reserves will be exhausted by the end of calendar 2014.

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^(f)  In connection with the sale in 1994 of certain of the surface rights related to approximately 40.7 million tonnes of the reported DeSoto reserves, we agreed not to mine such reserves until at least 2014. Our current mining plans do not contemplate mining these reserves until at least that time. In addition, in connection with the purchase in 1996 of approximately 108.9 million tonnes of the reported DeSoto reserves, we agreed to (i) pay royalties of between $0.50 and $0.90 per ton of rock mined based on future levels of DAP margins, (ii) pay to the seller lost income from the loss of surface use to the extent we use the property for mining related purposes before January 1, 2015 and (iii) re-convey to the seller the lands which are not scheduled to be mined upon completion of the permitting process and the approval of the Development Order for the mine.

We generally own the reserves shown for active mines in the table above, with the only significant exceptions being further described below:

• We hold the reserves referred to in Note (e) to the above table under leases that we have rights to extend to 2015 and 2022, respectively.

• We own the above-ground assets of the South Fort Meade mine, including the beneficiation plant, rail track and the initial clay settling areas. A limited partnership, South Ft. Meade Partnership, L.P. (“SFMP”), owns the majority of the mineable acres shown in the table for the South Fort Meade mine.

• We currently have a 94% economic interest in the profits and losses of SFMP. SFMP is included as a consolidated subsidiary in our financial statements.

• We have a long-term mineral lease with SFMP. This lease expires on the earlier of December 31, 2025 or on the date that we have completed mining and reclamation obligations associated with the leased property. Lease provisions include royalty payments and a commitment to give mining priority to the South Fort Meade phosphate reserves. We pay the partnership a royalty on each tonne mined and shipped from the areas that we lease from it. Royalty payments to SFMP averaged approximately $6 million annually over the last three fiscal years ended May 31, 2013, 2012 and 2011.

• Through its arrangements with us, SFMP also earns income from mineral lease payments, agricultural lease payments and interest income, and uses those proceeds primarily to pay dividends to its equity owners.

• The surface rights to approximately 882 acres for the South Fort Meade Mine are owned by SFMP, while the U.S. government owns the mineral rights beneath. We control the rights to mine these reserves under a mining lease agreement and pay royalties on the tonnage extracted. Under the lease, we paid $1.5 million in royalties to the U.S. government in fiscal 2013.

In light of the long-term nature of our rights to our reserves, we expect to be able to mine all reported reserves that are not currently owned prior to termination or expiration of our rights. Additional information regarding permitting is included in Part I, Item 1A, “Risk Factors”, under “Environmental, Health and Safety Matters—Operating Requirements and Permitting” in our Management’s Analysis, and under “Phosphate Mine Permitting in Florida” in Note 21 of our Consolidated Financial Statements.

Investments in Joint Ventures

We have a 35% economic interest in a joint venture, which owns a phosphate rock mine (the “Miski Mayo Mine”) in the Bayovar region of Peru. Our investment in the Miski Mayo Mine and related commercial offtake supply agreement to purchase a share of the phosphate rock from the Miski Mayo Mine reduces our purchases of phosphate rock from other suppliers. The Miski Mayo Mine’s annual production capacity is expected to be 3.9 million tonnes when fully operational.

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On March 19, 2013, we entered into a Heads of Agreement with Ma’aden and SABIC under which the parties intend to enter into the Northern Promise Joint Venture. The Northern Promise Joint Venture would develop a mine and chemical complexes that is presently expected to produce phosphate fertilizers, animal feed, food grade purified phosphoric acid and tripolyphosphate in the Kingdom of Saudi Arabia. We would have a 25% interest in the joint venture and in connection with our equity share, we would market approximately 25% of the production of the joint venture. Subject to final financing terms, our cash investment would be up to $1 billion, funded over a four-year period beginning in calendar 2013. The joint venture’s final financing arrangements are expected to include commitments by the shareholders to fund, on a limited basis, certain construction cost overruns and provide guarantees of financing through the construction phase. The approximately $7 billion greenfield project would be built in the northern region of Saudi Arabia at Wa’ad Al Shammal Minerals Industrial City, and include further expansion of processing plants in Ras Al Khair Minerals Industrial City which is located on the east coast of Saudi Arabia. The facilities are expected to have a production capacity of approximately 3.5 million tonnes of finished product per year. The project is expected to benefit from the availability of key raw nutrients that are available from sources within Saudi Arabia. Operations are expected to commence in late calendar 2016.

Sulfur

We use molten sulfur at our phosphates concentrates plants to produce sulfuric acid primarily for use in our production of phosphoric acid. We purchased approximately 3.5 million long tons of sulfur during fiscal 2013. We purchase most of this sulfur from North American oil and natural gas refiners who are required to remove or recover sulfur during the refining process. Production of one tonne of DAP requires approximately 0.40 long tons of sulfur. We procure our sulfur from multiple sources and receive it by truck, rail, barge and vessel, either direct to our phosphate plants or have it sent for gathering to terminals that are located on the US gulf coast.

We own and operate sulfur terminals in Houston, Texas and Riverview, Florida. We also lease terminal space in Tampa, Florida and Galveston and Beaumont, Texas. We own two ocean-going barges and contract for operation of another ocean-going vessel that transport molten sulfur from the Texas terminals to Tampa and then onward by truck to our Florida phosphate plants. In addition, we own a 50% equity interest in Gulf Sulphur Services Ltd., LLLP (“Gulf Sulphur Services”), which is operated by our joint venture partner. Gulf Sulphur Services has a large sulfur transportation and terminaling business in the Gulf of Mexico, and handles these functions for a substantial portion of our Florida sulfur volume. Gulf Sulphur Services’ capabilities include melting solid sulfur into the molten form that we use, which permits us to access sources of solid as well as molten sulfur. We further round out our sulfur logistic assets with a large fleet of leased railcars that supplement our marine sulfur logistic system. Our Louisiana operations are served by truck, rail and barge from nearby refineries.

Although sulfur is readily available from many different suppliers and can be transported to our phosphate facilities by a variety of means, sulfur is an important raw material used in our business that has in the past been and may in the future be the subject of volatile pricing and availability. Alternative transportation and terminaling facilities might not have sufficient capacity to fully serve all of our facilities in the event of a disruption to current transportation or terminaling facilities. Changes in the price of sulfur or disruptions to sulfur transportation or terminaling facilities could have a material impact on our business. We have included a discussion of sulfur prices in our Management’s Analysis.

Ammonia

We use ammonia together with phosphoric acid to produce DAP, MAP and MES. We used approximately 1.4 million tonnes of ammonia during fiscal 2013. Production of one tonne of DAP requires approximately 0.23 tonnes of ammonia.

Our Florida ammonia needs are supplied by offshore producers, under multi-year contracts. Ammonia for our New Wales and Riverview plants is terminaled through an ammonia facility at Port Sutton, Florida that we lease for a term expiring in calendar 2013, which we may extend for up to five additional years. A third party operates

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the Port Sutton ammonia facility pursuant to an agreement that expires in calendar 2013, which we may extend for an unlimited number of additional five year terms, as long as we or the other party is entitled to operate the ammonia facility. Ammonia for our Bartow plant is terminaled through another ammonia facility owned and operated by a third party at Port Sutton, Florida pursuant to an agreement that expires in calendar 2015. Ammonia is transported by pipeline from the terminals to our production facilities. We recently renewed the service agreements with the operators of the pipelines for Bartow, New Wales, and Riverview, which provide service through June 30, 2015 and may be extended in one year increments unless either party objects.

We produce ammonia at Faustina, Louisiana primarily for our own consumption. We have also begun front-end engineering and design work on a potential ammonia production plant at our existing Faustina site, which would substantially increase our capacity, allowing us to meet a significant portion of our internal needs. From time to time we sell surplus ammonia to unrelated parties.

Although ammonia is readily available from many different suppliers and can be transported to our phosphates facilities by a variety of means, ammonia is an important raw material used in our business that has in the past been and may in the future be the subject of volatile pricing, and alternative transportation and terminaling facilities might not have sufficient capacity to fully serve all of our facilities in the event of a disruption to existing transportation or terminaling facilities. Changes in the price of ammonia or disruptions to ammonia transportation or terminaling could have a material impact on our business. We have included a discussion of ammonia prices in our Management’s Analysis.

Natural Gas

Natural gas is the primary raw material used to manufacture ammonia. At our Faustina facility, ammonia is manufactured on site. The majority of natural gas is purchased through firm delivery contracts based on published index-based prices and is sourced from Texas and Louisiana via pipelines interconnected to the Henry Hub. We use over-the-counter swap and/or option contracts to forward price portions of future gas purchases. The portions of gas purchases not forward priced are purchased at the index based prices or at domestic spot market prices under short-term contracts. On average, we purchase approximately 18 million MMbtu of natural gas per year for use in ammonia production at Faustina.

Because our ammonia requirements for our Florida operations are purchased rather than manufactured on site, we purchase on average approximately two million MMbtu of natural gas per year in Florida only as a thermal fuel for various production processes.

Florida Land Holdings

We are a significant landowner in the State of Florida, which in the future is expected to return to its historical status as one of the fastest areas of population growth in the United States. We own land comprising approximately 255,000 acres held in fee simple title in central Florida, and have the right to mine additional properties which contain phosphate rock reserves. Some of our land holdings are needed to operate our Phosphates business, while a portion of our land assets, such as reclaimed properties, are not related to our operations. As a general matter, more of our reclaimed property becomes available for uses other than for phosphate operations each year. Our land assets are generally comprised of concentrates plants, port facilities, phosphate mines and other property which we have acquired through our presence in Florida. We are currently taking initial steps as part of a long-term future land use strategy to optimize the value of our land assets. For example, during fiscal 2011 we began development of Streamsong, a destination resort and conference center, in an area of previously mined land as part of our long-term business strategy to maximize the value and utility of our extensive land holdings in Florida. In addition to the two golf courses and clubhouse that were opened in fiscal year 2013, the resort and conference center are expected to be completed in calendar 2014.

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International Production

Our international operations include production in Brazil and Argentina. Our production facilities include plants that produce up to 740,000 tonnes per year of single superphosphate (“SSP”) and granulated SSP crop nutrients by mixing sulfuric acid with phosphate rock purchased from unrelated third party and the Miski Mayo Mine.

Potash Segment

We are one of the leading potash producers in the world. We mine and process potash in Canada and the United States and sell potash in North America and internationally. The term “potash” applies generally to the common salts of potassium. Muriate of potash (“MOP”) is the primary source of potassium for the crop nutrient industry. Red MOP has traces of iron oxide. The granular and standard grade Red MOP products are well suited for direct fertilizer application and bulk blending. White MOP has a higher percent potassium oxide (“K₂O”). White MOP, besides being well suited for the agricultural market, is used in many industrial applications.

Our potash products are marketed worldwide to crop nutrient manufacturers, distributors and retailers and are also used in the manufacture of mixed crop nutrients and, to a lesser extent, in animal feed ingredients. We also sell potash to customers for industrial use. In addition, our potash products are used for de-icing and as a water softener regenerant.

We operate three potash mines in Canada, including two shaft mines with a total of three production shafts and one solution mine, as well as two potash mines in the United States, including one shaft mine and one solution mine. We also own related refineries at each of the mines.

We have a long term potash capacity expansion plan in Saskatchewan, Canada in response to expected growth in global potash demand. From the inception of our brownfield expansions, our plans provide for an increase in our annual operational capacity for finished product by approximately five million tonnes.

• At our Esterhazy mine, the K2 shaft underground and mill expansions are complete and the K3 shaft is scheduled for completion in 2017.

• Our Colonsay mine’s new mill is being commissioned and underground work will be completed during calendar 2013.

• Our Belle Plaine Stage One expansion will come on-line in early 2014.

We have deferred construction on approximately two million tonnes of capacity until such time as construction costs moderate and we believe we are able to achieve higher expected returns on our investment.

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POTASH EXPANSION PROJECTS

(tonnes in millions)	Estimated Completion (Fiscal  Year)(a)	Estimated In-service (Fiscal Year)(b)		Estimated Additional Annual Operational Capacity(c)
Complete
Colonsay			2011-2012		0.2
Esterhazy
K1			2012		0.1
K2			2013		0.7
Belle Plaine			2013-2016		0.6
In progress
Colonsay	2014		2014-2015		0.5
Esterhazy
K3	2017		2017-2018		0.9
Future(d)
Belle Plaine					1.5
Colonsay					0.5
					5.0

^(a)  Estimated completion years indicate when capital will be substantially invested.

^(b)  Estimated in-service years indicate when capacity is expected to begin to be added; does not necessarily reflect full operating capacity.

^(c)  Project engineering estimates will be impacted by factors which include the quality of reserves and nature of geological formations we are mining at a particular time.

^(d)  Brownfield expansions currently deferred (the “Future Expansions”).

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As shown in the table above, we have realized the first capacity increases from the expansions at our potash mines. In addition, we anticipate that additional capacity increases will begin to be realized from expansion projects at our Belle Plaine and Colonsay potash mines beginning in fiscal 2014. All other expansion projects are progressing as planned. We estimate that our total operational capacity including the planned expansions and the Future Expansions will approximate 14.6 million tonnes. We estimate that our proven peaking capacity including the planned expansions and the Future Expansions will approximate 16.1 million tonnes.

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The map below shows the location of each of our potash mines.

Our current potash annualized operational capacity totals 10.7 million tonnes of product per year and accounted for approximately 13% of world capacity and 35% of North American capacity. Production during fiscal 2013 totaled 8.3 million tonnes and accounted for approximately 13% of estimated world production and 42% of estimated North American production.

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The following table shows, for each of our potash mines, annual capacity as of May 31, 2013 and volume of mined ore, average grade and finished product output for the past three fiscal years:

(tonnes in millions)					2013						2012						2011
Facility	Annualized Proven Peaking Capacity (a)(c )(d)		Annual Operational Capacity (a)(b)(d)(e)		Ore Mined		Grade % K2O(f)		Finished Product(b)		Ore Mined		Grade % K2O(f)		Finished Product		Ore Mined		Grade % K2O(f)		Finished Product
Canada
Belle Plaine—MOP		2.8		2.4		8.1		18.0		2.1		8.8		18.0		2.3		8.4		18.0		2.2
Colonsay—MOP		1.8		1.5		3.2		25.8		1.1		3.1		25.4		1.1		3.2		25.0		1.1
Esterhazy—MOP		5.3		5.3		12.6		23.0		4.0		12.4		23.2		4.0		11.8		23.9		3.9
Canadian Total		9.9		9.2		23.9		21.7		7.2		24.3		21.6		7.4		23.4		21.9		7.2
United States
Carlsbad—MOP		0.5		0.5		3.2		10.5		0.3		2.5		10.6		0.2		3.0		10.2		0.3
Carlsbad—K-Mag® (g)		1.1		1.0		3.7		5.7		0.7		3.8		5.1		0.8		3.5		5.1		0.7
Carlsbad Total		1.6		1.5		6.9		7.9		1.0		6.3		7.2		1.0		6.5		7.4		1.0
Hersey—MOP(h)		-		-		0.1		26.7		0.1		0.2		26.7		0.1		0.1		26.7		0.1
United States Total		1.6		1.5		7.0				1.1		6.5				1.1		6.6				1.1
Totals		11.5		10.7		30.9		18.6		8.3		30.8		18.7		8.5		30.0		18.8		8.3
Total excluding toll production(i)										7.8		27.5				7.4		27.2				7.4

^(a)  Finished product.

^(b)  Actual production varies from annual operational capacity shown in the above table due to factors that include among others the level of demand for our products, maintenance and turnaround time, the quality of the reserves and the nature of the geologic formations we are mining at any particular time, accidents, mechanical failure, product mix, and other operating conditions.

^(c)  Represents full capacity assuming no turnaround or maintenance time.

^(d)  The annualized proven peaking capacity shown above is the capacity currently used to determine our share of Canpotex sales. Canpotex members’ respective shares of Canpotex sales are based upon the members’ respective proven peaking capacities for producing potash. When a Canpotex member expands its production capacity, the new capacity is added to that member’s proven peaking capacity based on a test run at the maximum production level. The annual operational capacity reported in the table above can exceed the annualized proven peaking capacity until the test run has been completed.

^(e)  Annual operational capacity is our estimated long term potash capacity based on the quality of reserves and the nature of the geologic formations expected to be mined, milled and/or processed over the long term, average amount of scheduled down time and product mix, and no significant modifications to operating conditions, equipment or facilities. Operational capacities will continue to be updated to the extent new production results impact ore grades assumptions.

^(f)  Grade % K₂O is a traditional reference to the percentage (by weight) of potassium oxide contained in the ore. A higher percentage corresponds to a higher percentage of potassium oxide in the ore.

^(g)  K-Mag is a specialty product that we produce at our Carlsbad facility.

^(h)  The Hersey facility also mines, processes and sells salt. We currently operate Hersey at minimum production levels.

⁽ⁱ⁾  We toll produced MOP, for an unrelated third party, at our Esterhazy mine under a Tolling Agreement that expired December 31, 2012.

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Canadian Mines

We operate three Canadian potash facilities all located in the southern half of the Province of Saskatchewan, including our solution mine at Belle Plaine, two interconnected mine shafts at our Esterhazy shaft mine and our shaft mine at Colonsay.

Extensive potash deposits are found in the southern half of the Province of Saskatchewan. The potash ore is contained in a predominantly rock salt formation known as the Prairie Evaporites. The Prairie Evaporites deposits are bounded by limestone formations and contain the potash beds. Three potash deposits of economic importance occur in Saskatchewan: the Esterhazy, Belle Plaine and Patience Lake members. The Patience Lake member is mined at Colonsay, and the Esterhazy member at Esterhazy. At Belle Plaine all three members are mined. Each of the major potash members contains several potash beds of different thicknesses and grades. The particular beds mined at Colonsay and Esterhazy have a mining height of 11 and 8 feet, respectively. At Belle Plaine several beds of different thicknesses are mined.

Our potash mines in Canada produce MOP exclusively. Esterhazy and Colonsay utilize shaft mining while Belle Plaine utilizes solution mining technology. Traditional potash shaft mining takes place underground at depths of over 1,000 meters where continuous mining machines cut out the ore face and load it onto conveyor belts. The ore is then crushed, moved to storage bins and hoisted to refineries above ground. In contrast, our solution mining process involves heated brine, which is pumped through a “cluster” to dissolve the potash in the ore beds at a depth of approximately 1,500 meters. A cluster consists of a series of boreholes drilled into the potash ore. A separate distribution center at each cluster controls the brine flow. The solution containing dissolved potash and salt is pumped to a refinery where sodium chloride, a co-product of this process, is separated from the potash through the use of evaporation and crystallization techniques. Concurrently, the solution is pumped into a cooling pond where additional crystallization occurs and the resulting product is recovered via a floating dredge. Refined potash is dewatered, dried and sized. Our Canadian operations produce 14 different MOP products, including industrial grades, many through proprietary processes.

Under the Tolling Agreement, we mined and refined Potash Corporation of Saskatchewan Inc.’s (“PCS’s”) potash reserves at our Esterhazy mine for a nominal fee plus a pro rata share of operating and capital costs for approximately forty years. Under the agreement, we delivered to PCS up to 1.1 million tonnes of potash per year. The Tolling Agreement expired December 31, 2012. The productive capacity at our Esterhazy mine previously used to satisfy our obligations under the Tolling Agreement is now fully available to us for sales to any of our customers at then-current market prices.

As previously reported, on December 7, 2011, we and PCS settled, among other matters, a dispute regarding the expiration of the Tolling Agreement. Under the settlement, the Tolling Agreement expired at December 31, 2012. In addition, effective December 31, 2012, we received credit for 1.2 million tonnes of capacity at our Esterhazy mine for purposes of calculating our relative share of annual sales of potash to international customers by Canpotex, capacity which was previously allocated to PCS. Canpotex is an export association of certain Canadian potash producers. Canpotex sales are generally allocated among the producer members based on production capacity.

Our potash mineral rights in the Province of Saskatchewan consist of the following:

	Belle Plaine		Colonsay		Esterhazy		Total
Acres under control
Owned in fee		14,649		10,524		113,020		138,193
Leased from Province		51,568		67,006		191,633		310,207
Leased from others		-		2,726		68,766		71,492
Total under control		66,217		80,256		373,419		519,892

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We believe that our mineral rights in Saskatchewan are sufficient to support current operations for more than a century. Leases are generally renewable at our option for successive terms, generally 21 years each, except that certain of the acres shown above as “Leased from others” are leased under long-term leases with terms (including renewals at our option) that expire from 2023 to 2142.

We pay Canadian resource taxes consisting of the Potash Production Tax and resource surcharge. The Potash Production Tax is a Saskatchewan provincial tax on potash production and consists of a base payment and a profits tax. We also pay a percentage of the value of resource sales from our Saskatchewan mines. In addition to the Canadian resource taxes, royalties are payable to the mineral owners in respect of potash reserves or production of potash. We have included a further discussion of the Canadian resource taxes and royalties in our Management’s Analysis.

Since December 1985, we have effectively managed an inflow of salt saturated brine into our Esterhazy mine. At various times since then, we have experienced changing amounts and patterns of brine inflows at Esterhazy. To date, the brine inflow, including our remediation efforts to control it, have not had a material impact on our production processes or volumes. The volume of the net brine inflow (the rate of inflow less the amount we are pumping out of the mine) or net outflow (when we are pumping more brine out of the mine than the rate of inflow) fluctuates and is dependent on a number of variables, such as the location of the source of the inflow; the magnitude of the inflow; available pumping, surface and underground brine storage capacities; underground injection well capacities, and the effectiveness of calcium chloride and cementatious grout used to reduce or prevent the inflows, among other factors. As a result of these brine inflows, we incur expenditures, certain of which have been capitalized and others that have been charged to expense, in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).

It is possible that the costs of remedial efforts at Esterhazy may further increase in the future and that such an increase could be material, or, in the extreme scenario, that the brine inflows, risk to employees or remediation costs may increase to a level which would cause us to change our mining processes or abandon the mine. See “Key Factors that can Affect Results of Operations and Financial Condition” and “Potash Net Sales and Gross Margin” in our Management’s Analysis and “Our Esterhazy mine has had an inflow of salt saturated brine for more than 25 years” in Part I, Item 1A, “Risk Factors” in this report, which are incorporated herein by reference, for a discussion of costs, risks and other information relating to the brine inflows. We have begun construction of a new third shaft at the Esterhazy mine as part of our potash expansion plan which is also designed to mitigate risk from current and future inflows.

Due to the ongoing brine inflow at Esterhazy, underground operations at this facility are currently not insurable for water incursion problems. Like other potash producers’ shaft mines, our Colonsay, Saskatchewan, and Carlsbad, New Mexico, mines are also subject to the risks of inflow of water as a result of their shaft mining operations, but water inflow risks at these mines are included in our insurance coverage subject to deductibles, retentions and limits negotiated with our insurers.

United States Mines

In the United States, we have two potash facilities, including a shaft mine located in Carlsbad, New Mexico and a solution mine located in Hersey, Michigan.

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Our potash mineral rights in the United States consist of the following:

	Carlsbad		Hersey		Total
Acres under control
Owned in fee		-		581		581
Long-term leases		77,103		1,799		78,902
Total under control		77,103		2,380		79,483

The Carlsbad ore reserves are of two types: (1) sylvinite, a mixture of potassium chloride and sodium chloride that is the same as the ore mined in Saskatchewan, and (2) langbeinite, a double sulfate of potassium and magnesium. These two types of potash reserves occur in a predominantly rock salt formation known as the Salado Formation. The McNutt Member of this formation consists of eleven units of economic importance, of which we currently mine two. The McNutt Member’s evaporite deposits are interlayered with anhydrite, polyhalite, potassium salts, clay, and minor amounts of sandstone and siltstone.

Continuous underground mining methods are utilized to extract the ore. Drum type mining machines are used to cut the sylvinite and langbeinite ores from the face. Mined ore is then loaded onto conveyors, transported to storage areas, and then hoisted to the surface for further processing at our refinery.

Two types of potash are produced at the Carlsbad refinery. MOP is the primary source of potassium for the crop nutrient industry. Double sulfate of potash magnesia is the second type of potash, which we market under our brand name K-Mag^®, and contains sulfur, potassium and magnesium, with low levels of chloride.

At the Carlsbad facility, we mine and refine potash from 77,103 acres of mineral rights. We control these reserves pursuant to either (i) leases from the U.S. government that, in general, continue in effect at our option (subject to readjustment by the U.S. government every 20 years) or (ii) leases from the State of New Mexico that continue as long as we continue to produce from them. These reserves contain an estimated total of 256 million tonnes of potash mineralization (calculated after estimated extraction losses) in two mining beds evaluated at thicknesses ranging from 4.5 feet to in excess of 11 feet. At average refinery rates, these ore reserves are estimated to be sufficient to yield 16 million tonnes of concentrates from sylvinite with an average grade of approximately 60% K₂O and 20 million tonnes of langbeinite concentrates with an average grade of approximately 22% K₂O. At projected rates of production, we estimate that Carlsbad’s reserves of sylvinite and langbeinite are sufficient to support operations for approximately 31 years and 19 years, respectively.

At Hersey, Michigan, we operate a solution mining facility which produces salt and potash. Mining occurs in the Michigan Basin in a predominantly rock salt formation called the Salina Group Evaporite. This formation is a clean salt deposit with interlayered beds of sylvinite and carbonate. At the Hersey facility, our mineral rights consist of 581 acres owned in fee and 1,799 acres controlled under leases that, in general, continue in effect at our option as long as we continue our operations at Hersey. These lands contain an estimated 40 million tonnes of potash mineralization contained in two beds ranging in thickness from 14 to 30 feet.

Royalties for the U.S. operations amounted to approximately $20.4 million for fiscal 2013. These royalties are established by the U.S. Department of the Interior, Bureau of Land Management, in the case of the Carlsbad leases from the U.S. government, and pursuant to provisions set forth in the leases, in the case of the Carlsbad state leases and the Hersey leases.

Reserves

Our estimates below of our potash reserves and non-reserve potash mineralization are based on exploration drill hole data, seismic data and actual mining results over more than 35 years. Proven reserves are estimated by

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identifying material in place that is delineated on at least two sides and material in place within a half-mile radius or distance from an existing sampled mine entry or exploration core hole. Probable reserves are estimated by identifying material in place within a one mile radius from an existing sampled mine entry or exploration core hole. Historical extraction ratios from the many years of mining results are then applied to both types of material to estimate the proven and probable reserves. We believe that all reserves and non-reserve potash mineralization reported below are potentially recoverable using existing production shaft and refinery locations.

Our estimated recoverable potash reserves and non-reserve potash mineralization as of May 31, 2013 for each of our mines is as follows:

(tonnes in millions)	Reserves(a)(b)				Potash Mineralization(a)(c)
Facility	Recoverable Tonnes		Average Grade (%  K2O)		Potentially Recoverable Tonnes
Canada
Belle Plaine		797		18.0		2,331
Colonsay		224		26.4		295
Esterhazy		860		24.5		729
sub-totals		1,881		22.0		3,355
United States
Carlsbad		256		7.7		-
Hersey		40		26.7		-
sub-totals		296		10.2		-
Totals		2,177		20.4		3,355

^(a)  There has been no third party review of reserve estimates within the last five years. The reserve estimates have been prepared in accordance with the standards set forth in Industry Guide 7 promulgated by the SEC.

^(b)  Includes 1.3 billion tonnes of proven reserves and 0.9 billion tonnes of probable reserves.

^(c)  The non-reserve potash mineralization reported in the table in some cases extends to the boundaries of the mineral rights we own or lease. Such boundaries are up to 16 miles from the closest existing sampled mine entry or exploration core hole. Based on available geologic data, the non-reserve potash mineralization represents potash that we expect to mine in the future, but it may not meet all of the technical requirements for categorization as proven or probable reserves under Industry Guide 7.

As discussed more fully above, we either own the reserves and mineralization shown above or lease them pursuant to mineral leases that generally remain in effect or are renewable at our option, or are long-term leases. Accordingly, we expect to be able to mine all reported reserves that are leased prior to termination or expiration of the existing leases.

Natural Gas

Natural gas is used at our potash solution mines as a fuel to produce steam and to dry potash products. The steam is used to generate electricity, in evaporation and crystallization processes and to provide thermal heat to the solution mining process. Our two solution mines accounted for approximately 78% of our Potash segment’s total natural gas requirements for potash production in fiscal 2013. At our shaft mines, natural gas is used as a fuel to heat fresh air supplied to the shaft mines and for drying potash products. Combined natural gas usage for both the solution and shaft mines approximated 17 million MMbtu for fiscal 2013. We purchase our natural gas requirements on firm delivery index price-based physical contracts and on short term spot-priced physical

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contracts. Our Canadian operations purchase all of their physical gas in Saskatchewan via the TransGas pipeline system using AECO price indices as pricing references. The U.S. potash operations in Michigan and New Mexico purchase physical gas in their respective regional markets via the MichCon and El Paso Permian Basin market hubs as pricing references, respectively. We use financial derivative contracts to manage the price of portions of our future purchases.

SALES AND DISTRIBUTION ACTIVITIES

United States and Canada

We have a United States and Canada sales and marketing team that serves our business segments. We sell to wholesale distributors, retail chains, cooperatives, independent retailers and national accounts.

Customer service and the ability to effectively minimize the overall supply chain costs are key competitive factors in the crop nutrient and animal feed ingredients businesses. In addition to our production facilities, to service the needs of our customers, we own, lease or have contractual throughput or other arrangements at strategically located distribution warehouses along or near the Mississippi and Ohio Rivers as well as in other key agricultural regions of the United States and Canada. From these facilities, we market Mosaic produced phosphate and potash products for customers who in turn resell the product into the distribution channel or directly to farmers in the United States and Canada.

We own port facilities in Savage, Minnesota as well as warehouse distribution facilities in Pekin, Illinois; Henderson, Kentucky; and Houston, Texas, which has a deep water berth providing access to the Gulf of Mexico.

In addition to the geographically situated facilities that we own, our U.S. distribution operations also include leased distribution space or contractual throughput agreements in other key geographical areas such as California, Florida, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maryland, Minnesota, Nebraska, New York, North Dakota, Pennsylvania and Texas.

Our Canadian customers include independent dealers and national accounts. We also lease and own warehouse facilities in Saskatchewan, Ontario, Quebec and Manitoba in Canada.

International

Outside of the United States and Canada, we market our Phosphates segment’s products through PhosChem, as well as our Phosphates segment’s own international distribution activities. During fiscal 2013, PhosChem marketed approximately 67% of our phosphate export sales volume. We administer PhosChem on behalf of PhosChem’s member companies. We estimate that PhosChem’s sales represent approximately 59% of total U.S. export volume of concentrated phosphates and 10% of global trade volume. The countries that account for the largest amount of PhosChem’s sales of concentrated phosphates include India, Brazil, Australia, Japan and Colombia.

Our sales outside of the United States and Canada of Saskatchewan potash products are made through Canpotex. Canpotex sales are allocated among its members based on peaking capacity. Our current entitlement is 43.0%, by volume, of Canpotex’s requirements. We have been notified by Canpotex that our entitlement is being changed effective July 1, 2013 to approximately 40% as a result of a recent change in the members’ respective peaking capacities. Our potash exports from Carlsbad are sold through our own sales force. We also market our Potash segment’s products through our Phosphates segment international distribution activities, which acquire potash primarily through Canpotex. The largest amount of international potash sales, by volume, are to Brazil, China, Indonesia, Malaysia, India, Japan, Korea, Thailand, Taiwan and Australia.

Our Phosphates segment also purchases phosphates, potash and nitrogen products from unrelated third parties to produce blended crop nutrients (“Blends”).

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To service the needs of our customers, our international distribution activities include a network of strategically located sales offices, crop nutrient blending and bagging facilities, port terminals and warehouse distribution facilities that we own and operate in key geographic areas throughout several countries. The blending and bagging facilities primarily produce Blends from phosphate, potash and nitrogen. The average product mix in our Blends (by volume) contains approximately 50% phosphate, 25% potash and 25% nitrogen, although this mix differs based on seasonal and other factors. Our international operations serve primarily as a sales outlet for our North American Phosphates production, both for resale and as an input for Blends. Our Potash segment also has historically furnished a portion of the raw materials needs for the production of Blends, primarily via Canpotex, and is expected to continue to do so in the future.

The following maps show the locations of our primary distribution operations in South America and Asia:

 

Other Products

With a strong brand position in a multi-billion dollar animal feed ingredients global market, our Phosphates segment supplies animal feed ingredients for poultry and livestock to customers in North America, Latin America and Asia. Our potash sales to non-agricultural users are primarily to large industrial accounts and the animal feed industry. Additionally, we sell potash for de-icing and as a water softener regenerant, as well as fluorosilicic acid for water fluoridation.

COMPETITION

Because crop nutrients are global commodities available from numerous sources, crop nutrition companies compete primarily on the basis of delivered price. Other competitive factors include product quality, cost and availability of raw materials, customer service, plant efficiency and availability of product. As a result, markets for our products are highly competitive. We compete with a broad range of domestic and international producers, including farmer cooperatives, subsidiaries of larger companies, and independent crop nutrient companies. Foreign competitors often have access to cheaper raw materials, are required to comply with less stringent regulatory requirements or are owned or subsidized by governments and, as a result, may have cost advantages over North American companies. We believe that our extensive North American and international production and

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distribution system provides us with a competitive advantage by allowing us to achieve economies of scale, transportation and storage efficiencies, and obtain market intelligence. Also, we believe our premium products provide us a competitive advantage with customers in North and South America.

Unlike many of our competitors, we have our own distribution system to sell phosphate- and potash-based crop nutrients and animal feed ingredients, whether produced by us or by other third parties, around the globe. In North America, we have one of the largest and most strategically located distribution systems for crop nutrients, including warehouse facilities in key agricultural regions. We also have an extensive network of distribution facilities internationally, including in the key growth regions of Latin America and Asia, with port terminals, warehouses, and blending plants in the following countries: Brazil, Argentina, Chile, China, and India. Our global presence allows us to efficiently serve customers in approximately 40 countries.

Phosphates Segment

Our Phosphates segment operates in a highly competitive global market. Among the competitors in the global phosphate industry are domestic and foreign companies, as well as foreign government-supported producers in Asia and North Africa. Phosphate producers compete primarily based on price and, to a lesser extent, product quality, service and innovation, such as our MicroEssentials^® product. Major integrated producers of feed phosphates are located in the United States, Europe and China. Many smaller producers are located in emerging markets around the world. Many of these smaller producers are not miners of phosphate rock or manufacturers of phosphoric acid and are required to purchase this material on the open market.

We believe that we are a low cost integrated producer of phosphate-based crop nutrients, due in part to our scale, vertical integration and strategic network of production and distribution facilities. As the world’s largest producer of concentrated phosphates, as well as the second largest miner of phosphate rock in the world and the largest in the United States, we maintain an advantage over some competitors as the scale of operations effectively reduces production costs per unit. We are also vertically integrated to captively supply one of our key inputs, phosphate rock, to our phosphate production facilities. We believe that our position as an integrated producer of phosphate rock provides us with a significant cost advantage over competitors that are non-integrated phosphate producers. Our investment in the Miski Mayo Mine and related commercial offtake supply agreement to purchase a share of the phosphate rock also allows us to reduce our purchases of phosphate rock from other suppliers. In addition, we expect that the Northern Promise Joint Venture will enable us to not only further diversify our sources of phosphates but also improve our access to key agricultural countries in Asia and the Middle East.

We produce ammonia at our Faustina, Louisiana concentrates plant in quantities sufficient to meet approximately one quarter of our total ammonia needs. With no captive ammonia production in Florida, we are subject to significant volatility in our purchase price of ammonia from world markets. With our own sulfur transportation barges and our 50% ownership interest in Gulf Sulphur Services, we are also well-positioned to source an adequate, flexible and cost-effective supply of sulfur, our third key input. We believe that our investments in sulfur transportation assets continue to afford us a competitive advantage compared to other North American producers in cost and access to sulfur.

With facilities in both central Florida and Louisiana, in addition to dedicated marine and other assets for the transportation and handing of sulfur, we are logistically well positioned to fulfill our needs at very competitive prices. Those multiple production points also afford us the flexibility to optimally balance supply and demand.

We have a strong brand in several of the countries in which we have international distribution activities. In addition to having access to our own production, our international distribution activities have the capability to supply a wide variety of crop nutrients to our dealer/farmer customer base. Our presence in Latin America and Asia allows us to capitalize on the growth in nutrient demand in these large and growing international regions.

We are subject to many environmental laws and regulations in Florida and Louisiana that are often more stringent than those to which producers in other countries are subject.

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Potash Segment

Potash is a commodity available from several geographical regions around the world and, consequently, the market is highly competitive. Through our participation in Canpotex, we compete outside of North America against various independent and state-owned potash producers. We also ship product from our Carlsbad, New Mexico, potash facility to our South American and Asian distribution centers. Our principal methods of competition with respect to the sale of potash include product pricing, and offering consistent, high-quality products and superior service. We believe that our potash cost structure is competitive in the industry and should improve as we achieve the expected increases in production from our potash expansion projects.

FACTORS AFFECTING DEMAND

Our results of operations historically have reflected the effects of several external factors which are beyond our control and have in the past produced significant downward and upward swings in operating results. Revenues are highly dependent upon conditions in the agriculture industry and can be affected by, among other factors: crop conditions; changes in agricultural production practices; worldwide economic conditions, including the increasing world population, household incomes, and demand for more protein rich food, particularly in developing regions such as China, India, and Latin America; changing demand for biofuels; variability in commodity pricing; governmental policies; the level of inventories in the crop nutrient distribution channels; customer expectations about farmer economics, future crop nutrient prices and availability and transportation costs, among other matters; market trends in raw material costs; market prices for crop nutrients; and weather. Furthermore, our crop nutrients business is seasonal to the extent farmers and agricultural enterprises in the markets in which we compete purchase more crop nutrient products during the spring and fall. The international scope of our business, spanning the northern and southern hemispheres, reduces to some extent the seasonal impact on our business. The degree of seasonality of our business can change significantly from year to year due to conditions in the agricultural industry and other factors. The seasonal nature of our businesses requires significant working capital for inventory in advance of the planting seasons.

We sell products throughout the world. Unfavorable changes in trade protection laws, policies and measures, government policies and other regulatory requirements affecting trade; unexpected changes in tax and trade treaties; strengthening or weakening of foreign economies as well as political relations with the United States may cause sales trends to customers in one or more foreign countries to differ from sales trends in the United States.

Our international operations are subject to risks from changes in foreign currencies, or government policy, which can affect local farmer economics.

OTHER MATTERS

Employees

We had approximately 8,400 employees as of May 31, 2013, consisting of approximately 3,600 salaried and 4,800 hourly employees.

Labor Relations

As of May 31, 2013:

• We had ten collective bargaining agreements with unions covering approximately 93% of our hourly employees in the U.S. and Canada. Of these employees, approximately 32% are covered under collective bargaining agreements scheduled to expire in fiscal 2014.

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• Agreements with ten unions covered all employees in Brazil, representing 73% of our international employees. More than one agreement may govern our relations with each of these unions. In general, the agreements are renewable on an annual basis.

• We also had collective bargaining agreements with unions covering employees in several other countries.

Failure to renew any of our union agreements could result in a strike or labor stoppage that could have a material adverse effect on our operations. However, we have not experienced significant work stoppage in many years and historically have had good labor relations.

Financial Information about our Business Segments and Operations by Geographic Areas

We have included financial information about our business segments, our operations by geographic area and our revenues by class of similar products in Note 23 of our Consolidated Financial Statements.

Information Available on our Website

Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments thereto, filed with the SEC pursuant to Section 13(a) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder are made available free of charge on our website, (www.mosaicco.com), as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. The information contained on our website is not being incorporated in this report.

EXECUTIVE OFFICERS

Information regarding our executive officers as of July 16, 2013 is set forth below:

Name	Age		Position
Anthony T. Brausen		54	Senior Vice President—Finance and Chief Accounting Officer
Gary “Bo” N. Davis		61	Senior Vice President—Phosphates Operations
Mark E. Kaplan		45	Vice President—Public Affairs
Richard L. Mack		45	Executive Vice President, General Counsel and Corporate Secretary
Richard N. McLellan		56	Senior Vice President—Commercial
James “Joc” C. O’Rourke		52	Executive Vice President—Operations and Chief Operating Officer
James T. Prokopanko		59	Chief Executive Officer, President and Director
Corrine D. Ricard		50	Senior Vice President—Human Resources
Lawrence W. Stranghoener		59	Executive Vice President and Chief Financial Officer

Anthony T. Brausen. Mr. Brausen was elected Senior Vice President—Finance and Chief Accounting Officer of Mosaic in December 2011. His responsibilities include global Accounting, Financial Planning, Treasury, Tax, Risk Advisory & Assurance and Information Technology. Previously, Mr. Brausen served as Vice President—Finance and Chief Accounting Officer since April 2006. Prior to joining Mosaic as an employee in February 2006, Mr. Brausen had been Vice President and Chief Financial Officer of Tennant Company, a designer, manufacturer and marketer of floor maintenance and outdoor cleaning equipment, chemical-free cleaning technologies, specialty surface coatings and related products, since March 2000. From 1989-2000, Mr. Brausen held several financial management positions, including Vice President and Treasurer, Assistant Controller and Director of Investor Relations, with International Multifoods Corporation, a diversified publicly-traded food processor and distributor. From 1981-1989, Mr. Brausen held various positions with KPMG LLP.

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Gary “Bo” N. Davis. Mr. Davis was elected Senior Vice President—Phosphate Operations of Mosaic in July 2011. Previously, Mr. Davis served as Vice President—Phosphate Operations of Mosaic since June 2010, as Vice-President—Phosphate Operations for all of Mosaic’s Florida and Louisiana operations since 2007 and Vice President of Mining since Mosaic’s formation in 2004. Prior to the Combination, Mr. Davis held several positions at Cargill, including Vice President, Operations for the fertilizer division from 1999 to 2004. Mr. Davis has worked in the crop nutrient industry for over 30 years.

Mark E. Kaplan. Mr. Kaplan was elected Vice President—Public Affairs in August 2011. Mr. Kaplan joined Mosaic in January 2007 as Vice President – Planning and Government Affairs of our subsidiary Mosaic Fertilizer, LLC to lead its government affairs function in Florida. In May 2010, Mr. Kaplan became Vice President – Public Affairs and Policy for Mosaic’s Phosphates business segment, leading its overall public affairs function. Prior to joining Mosaic, Mr. Kaplan served as chief of staff for former Florida Governor Jeb Bush. He also held roles as president and general counsel of Carlisle Development Group LLC, executive director of the Florida Housing Finance Corporation and a shareholder in the law firm Katz, Kutter, Haigler, Alderman, Bryant & Yon, P.A.

Richard L. Mack. Mr. Mack was elected Executive Vice President, General Counsel and Corporate Secretary effective January 1, 2009. Mr. Mack served as Senior Vice President, General Counsel and Corporate Secretary of Mosaic since its formation in 2004. Mr. Mack also provides executive oversight for Mosaic’s land development and permitting organizations. Prior to the formation of Mosaic in 2004, Mr. Mack was a Senior Attorney in Cargill’s worldwide law department and a co-founder of Cargill’s venture capital business unit.

Richard N. McLellan. Mr. McLellan was elected as Senior Vice President—Commercial in April 2007. Previously, Mr. McLellan had served us as our Vice President—North American Sales since December 2005 and as Country Manager for our (and, prior to the Combination, Cargill’s) Brazilian crop nutrient business since November, 2002. Mr. McLellan joined Cargill in 1989 and held various roles in its Canadian and U.S. operations, including grain, retail and wholesale crop nutrient distribution.

James “Joc” C. O’Rourke. Mr. O’Rourke was promoted to Executive Vice President—Operations and Chief Operating Officer in August 2012. Previously, Mr. O’Rourke served as Executive Vice President—Operations since January 2009. Prior to joining Mosaic, Mr. O’Rourke was President, Australia Pacific for Barrick Gold Corporation, the largest gold producer in Australia, since May 2006, where he was responsible for the Australia Pacific Business Unit consisting of ten gold and copper mines in Australia and Papua New Guinea. Before that, Mr. O’Rourke was Executive General Manager Australia and Managing Director of Placer Dome Asia Pacific Ltd., the second largest gold producer in Australia, from December 2004, where he was responsible for the Australia Business Unit consisting of five gold and copper mines; and General Manager Western Australia Operations for Iluka Resources Ltd., the world’s largest zircon and second largest titanium producer, from September 2003, where he was responsible for six mining and concentrating operations and two mineral separation/synthetic rutile refineries. Mr. O’Rourke had previously held various management, engineering and other roles in the mining industry in Canada and Australia since 1984.

James T. Prokopanko. Mr. Prokopanko became our President and Chief Executive Officer on January 1, 2007. Until joining us as Executive Vice President and Chief Operating Officer on July 31, 2006, Mr. Prokopanko was a Corporate Vice President of Cargill since 2004. He was Cargill’s Corporate Vice President with executive responsibility for procurement from 2002 to 2006 and a platform leader responsible for Cargill’s Ag Producer Services Platform from 1999 to July 2006. After joining Cargill in 1978, Mr. Prokopanko served in a wide range of leadership positions, including being named Vice President of North American crop inputs business in 1995. During his Cargill career, Mr. Prokopanko was engaged in retail agriculture businesses in the United States, Canada, Brazil, Argentina and the United Kingdom. Mr. Prokopanko resigned from all of his current positions with Cargill and its subsidiaries (other than Mosaic) in connection with his election as Executive Vice President and Chief Operating Officer of Mosaic. Mr. Prokopanko has served as a director of Mosaic since October 2004 and served as a member of the Corporate Governance and Nominating Committee and the Environmental, Health and Safety Committee of the Company’s Board of Directors since his election to the Board through July 31, 2006.

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Corrine D. Ricard. Ms. Ricard was named Senior Vice President—Human Resources in April 2012. Ms. Ricard has held various leadership positions at Mosaic since its formation, including Vice President—International Distribution, Vice President—Business Development and Vice President—Supply Chain. Prior to Mosaic’s formation, Ms. Ricard worked for Cargill in various roles including risk management, supply chain and commodity trading.

Lawrence W. Stranghoener. Mr. Stranghoener joined us as Executive Vice President and Chief Financial Officer in October 2004. He previously served as Executive Vice President and Chief Financial Officer of Thrivent Financial for Lutherans and its predecessor organization from January 1, 2001 until October 2004, where he had responsibility over the organization’s investments, finance and related functions. Prior to that, from 1983 through December 1999, Mr. Stranghoener worked in various senior management positions with Honeywell, Inc. in the United States and Europe, including Vice President and Chief Financial Officer, Vice President of Business Development, Vice President of Finance, Director of Corporate Financial Planning and Analysis and Director of Investor Relations. In December 1999, following the Honeywell-AlliedSignal merger, Mr. Stranghoener joined Techies.com of Edina, Minnesota, as Executive Vice President and Chief Financial Officer.

Our executive officers are generally elected to serve until their respective successors are elected and qualified or until their earlier death, resignation or removal. No “family relationships,” as that term is defined in Item 401(d) of Regulation S-K, exist among any of the listed officers.

Item 1A. Risk Factors

Our business, financial condition or results of operations could be materially adversely affected by any of the risks and uncertainties described below.

Our operating results are highly dependent upon and fluctuate based upon business and economic conditions and governmental policies affecting the agricultural industry where we or our customers operate. These factors are outside of our control and may significantly affect our profitability.

Our operating results are highly dependent upon business and economic conditions and governmental policies affecting the agricultural industry, which we cannot control. The agricultural products business can be affected by a number of factors. The most important of these factors, for U.S. markets, are:

• weather patterns and field conditions (particularly during periods of traditionally high crop nutrients consumption);

• quantities of crop nutrients imported to and exported from North America;

• current and projected grain inventories and prices, which are heavily influenced by U.S. exports and world-wide grain markets; and

• U.S. governmental policies, including farm and biofuel policies, which may directly or indirectly influence the number of acres planted, the level of grain inventories, the mix of crops planted or crop prices.

International market conditions, which are also outside of our control, may also significantly influence our operating results. The international market for crop nutrients is influenced by such factors as the relative value of the U.S. dollar and its impact upon the cost of importing crop nutrients, foreign agricultural policies, including subsidy policies, the existence of, or changes in, import or foreign currency exchange barriers in certain foreign markets, changes in the hard currency demands of certain countries and other regulatory policies of foreign governments, as well as the laws and policies of the United States affecting foreign trade and investment.

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Our most important products are global commodities, and we face intense global competition from other crop nutrient producers that can affect our prices and volumes.

Our most important products are concentrated phosphate crop nutrients, including diammonium phosphate, or DAP, and monoammonium phosphate, or MAP, and muriate of potash, or MOP. We sell most of our DAP, MAP and MOP in the form of global commodities. Our sales of these products face intense global competition from other crop nutrient producers.

Changes in competitors’ production or shifts in their marketing focus have in the past significantly affected both the prices at which we sell our products and the volumes that we sell, and are likely to continue to do so in the future.

Competitors are more likely to increase their production at times when world agricultural and crop nutrient markets are strong, and to focus on sales into regions where their returns are highest. Increases in the global supply of DAP, MAP and MOP or competitors’ increased sales into regions in which we have significant sales could adversely affect our prices and volumes.

Competitors and potential new entrants in the markets for both concentrated phosphate crop nutrients and potash have in recent years expanded capacity or begun, or announced plans, to expand capacity or build new facilities. The extent to which current global or local economic and financial conditions, changes in global or local economic and financial conditions, or other factors may cause delays or cancellation of some of these ongoing or planned projects, or result in the acceleration of existing or new projects, is unclear. In addition, the level of exports by producers of concentrated phosphate crop nutrients in China depends to a significant extent on Chinese government actions to curb exports through, among other measures, prohibitive export taxes at times when the government believes it desirable to assure ample domestic supplies of concentrated phosphate crop nutrients to stimulate grain and oilseed production.

In addition, some of our competitors who are expanding their potash production capacity include other members of Canpotex. Canpotex members’ respective shares of Canpotex sales is based upon the members’ respective proven peaking capacity for producing potash. When a Canpotex member expands its production capacity, the new capacity is added to that member’s proven peaking capacity based on a test run at the maximum production level. Antitrust and competition laws prohibit the members of Canpotex from coordinating their production decisions, including the timing of their respective test runs. Worldwide potash production levels during these test runs could exceed then-current market demand, resulting in an oversupply of potash and lower potash prices.

We cannot accurately predict when or whether competitors’ or new entrants’ ongoing or planned capacity expansions or new facilities will be completed, the timing of competitors’ tests to prove peaking capacity for Canpotex purposes, the cumulative effect of these and recently completed expansions, the impact of future decisions by the Chinese government on the level of Chinese exports of concentrated phosphate crop nutrients, or the effects of these or other actions by our competitors on the prices for our products or the volumes that we are able to sell.

Our crop nutrients and other products are subject to price and demand volatility resulting from periodic imbalances of supply and demand, which may cause our results of operations to fluctuate.

Historically, the market for crop nutrients has been cyclical, and prices and demand for our products have fluctuated to a significant extent, particularly for phosphates and, to a lesser extent, potash. Periods of high demand, increasing profits and high capacity utilization tend to lead to new plant investment and increased production. This growth increases supply until the market is over-saturated, leading to declining prices and declining capacity utilization until the cycle repeats.

As a result, crop nutrient prices and volumes have been volatile. This price and volume volatility may cause our results of operations to fluctuate and potentially deteriorate. The price at which we sell our crop nutrient products

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and our sales volumes could fall in the event of industry oversupply conditions, which could have a material adverse effect on our business, financial condition and results of operations. In contrast, high prices may lead our customers and farmers to delay purchasing decisions in anticipation of future lower prices, thus impacting our sales volumes.

Due to reduced market demand, depressed agricultural economic conditions and other factors, we and our predecessors have at various times suspended or reduced production at some of our facilities. The extent to which we utilize available capacity at our facilities will cause fluctuations in our results of operations, as we will incur costs for any temporary or indefinite shutdowns of our facilities and lower sales tend to lead to higher fixed costs as a percentage of sales.

Variations in crop nutrient application rates may exacerbate the cyclicality of the crop nutrient markets.

Farmers are able to maximize their economic return by applying optimum amounts of crop nutrients. Farmers’ decisions about the application rate for each crop nutrient, or to forego application of a crop nutrient, particularly phosphate and potash, vary from year to year depending on a number of factors, including among others, crop prices, crop nutrient and other crop input costs or the level of the crop nutrient remaining in the soil following the previous harvest. Farmers are more likely to increase application rates when crop prices are relatively high, crop nutrient and other crop input costs are relatively low and the level of the crop nutrient remaining in the soil is relatively low. Conversely, farmers are likely to reduce or forego application when farm economics are weak or declining or the level of the crop nutrients remaining in the soil is relatively high. This variability in application rates can materially accentuate the cyclicality in prices for our products and our sales volumes.

Our crop nutrient business is seasonal, which may result in carrying significant amounts of inventory and seasonal variations in working capital, and our inability to predict future seasonal crop nutrient demand accurately may result in excess inventory or product shortages.

The crop nutrient business is seasonal. Farmers tend to apply crop nutrients during two short application periods, the strongest one in the Spring before planting and the other in the Fall after harvest. As a result, the strongest demand for our products typically occurs during the Spring planting season, with a second period of strong demand following the Fall harvest. In contrast, we and other crop nutrient producers generally produce our products throughout the year. As a result, we and/or our customers generally build inventories during the low demand periods of the year in order to ensure timely product availability during the peak sales seasons. The seasonality of crop nutrient demand results in our sales volumes and net sales typically being the highest during the North American Spring season and our working capital requirements typically being the highest just prior to the start of the Spring season. Our quarterly financial results can vary significantly from one year to the next due to weather-related shifts in planting schedules and purchasing patterns.

If seasonal demand exceeds our projections, we will not have enough product and our customers may acquire products from our competitors, which would negatively impact our profitability. If seasonal demand is less than we expect, we will be left with excess inventory and higher working capital and liquidity requirements.

The degree of seasonality of our business can change significantly from year to year due to conditions in the agricultural industry and other factors.

The distribution channels for crop nutrients have capacity to build significant levels of inventories. Significant levels of inventories in the distribution channels for crop nutrients can adversely affect our sales volumes and selling prices.

In order to balance the production needs of crop nutrient producers with farmers’ seasonal use of crop nutrients, crop nutrient distribution channels need to have the capacity to build significant inventories. The build-up of inventories in the distribution channels can become excessive, particularly during the cyclical periods of low

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demand that have been typical in the crop nutrient industry. When there are excessive inventories in the distribution channel, our sales volumes and selling prices can be adversely impacted, even during periods in which farmers’ use of crop nutrients may remain strong.

Changes in transportation costs can affect our sales volumes and selling prices.

The cost of delivery is a significant factor in the total cost to customers and farmers of crop nutrients. As a result, changes in transportation costs or in customer expectations about them can affect our sales volumes and prices.

Customer expectations about future events can have a significant effect on the demand for our products. These expectations can significantly affect our sales volumes and selling prices.

Customer expectations about future events has had and is expected to continue to have an effect on the demand and prices for crop nutrients. Future events that may be affected by customer expectations include, among others:

• Customer expectations about future crop nutrient prices and availability.

Customer expectations about selling prices and availability of crop nutrients has had and is expected to continue to have an effect on the demand for crop nutrients. When customers anticipate increasing crop nutrient selling prices, customers tend to accumulate inventories before the anticipated price increases. This can result in a lag in our realization of rising market prices for our products. Conversely, customers tend to delay their purchases when they anticipate future selling prices for crop nutrients will stabilize or decrease, adversely affecting our sales volumes and selling prices. Customer expectations about availability of crop nutrients can have similar effects on sales volumes and prices.

• Customer expectations about future farmer economics.

Similarly, customer expectations about future farmer economics has had and is expected to continue to have an effect on the demand for crop nutrients. When customers anticipate improving farmer economics, customers tend to accumulate crop nutrient inventories in anticipation of increasing sales volumes and selling prices. This can result in a lag in our realization of rising market prices for our products. Conversely, when customers anticipate declining farmer economics, customers tend to reduce the level of their purchases of crop nutrients, adversely affecting our sales volumes and selling prices.

• Changes in customer expectations about transportation costs.

As discussed above, increasing transportation costs effectively increase customers’ and farmers’ costs for crop nutrients and can reduce the amount we realize for our sales. Expectations of decreasing transportation costs can result in customers and farmers anticipating that they may be able to decrease their costs by delaying purchases. As a result, changes in customer expectations about transportation costs can affect our sales volumes and prices.

We conduct our operations primarily through a limited number of key production and distribution facilities. Any disruption at one of these facilities could have a material adverse impact on our business. The risk of material disruption increases when demand for our products results in high operating rates at our facilities.

We conduct our operations through a limited number of key production and distribution facilities. These facilities include our phosphate mines and concentrates plants, our potash mines and the ports and other distribution facilities through which we conduct our business. Any disruption of operations at one of these facilities has the possibility of significantly affecting our production or our ability to distribute our products. Operating these facilities at high rates during periods of high demand for our products increases the risk of mechanical or

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structural failures, decreases the time available for routine maintenance and increases the impact on our operating results from any disruption. A disruption of operations at one of our key facilities could have a material adverse effect on our results of operations or financial condition.

Insurance market conditions, our loss experience and other factors affect the insurance coverage that we carry, and we are not fully insured against all potential hazards and risks incident to our business. As a result, our insurance coverage may not adequately cover our losses.

We maintain property, business interruption and casualty insurance policies, but we are not fully insured against all potential hazards and risks incident to our business. We are subject to various self-retentions and deductibles under these insurance policies. As a result of market conditions, our loss experience and other factors, our premiums, self-retentions and deductibles for insurance policies can increase substantially and, in some instances, certain insurance may become unavailable or available only for reduced amounts of coverage. In addition, significantly increased costs could lead us to decide to reduce, or possibly eliminate, coverage. As a result, a disruption of operations at one of our key facilities or a significant casualty could have a material adverse effect on our results of operation or financial condition.

Important raw materials and energy used in our businesses in the past have been and may in the future be the subject of volatile pricing. Changes in the price of our raw materials could have a material impact on our businesses.

Natural gas, ammonia and sulfur are key raw materials used in the manufacture of phosphate crop nutrient products. Natural gas is used as both a chemical feedstock and a fuel to produce anhydrous ammonia, which is a raw material used in the production of concentrated phosphate products. Natural gas is also a significant energy source used in the potash solution mining process. From time to time, our profitability has been and may in the future be impacted by the price and availability of these raw materials and other energy costs. Because most of our products are commodities, there can be no assurance that we will be able to pass through increased costs to our customers. A significant increase in the price of natural gas, ammonia, sulfur or energy costs that is not recovered through an increase in the price of our related crop nutrients products could have a material impact on our business.

During periods when the price for concentrated phosphates is falling because of falling raw material prices, we may experience a lag in realizing the benefits of the falling raw materials prices. This lag can adversely affect our gross margins and profitability.

During some periods, changes in market prices for raw materials can lead to changes in the global market prices for concentrated phosphate crop nutrients. In particular, the global market prices for concentrated phosphate crop nutrients can be affected by changes in the market prices for sulfur, ammonia, phosphate rock and/or phosphoric acid raw materials. Increasing market prices for these raw materials tend to put upward pressure on the selling prices for concentrated phosphate crop nutrients, and decreasing market prices for these raw materials tend to put downward pressure on selling prices for concentrated phosphate crop nutrients. When the market prices for these raw materials plunge rapidly, the selling prices for our concentrated phosphate crop nutrients can fall more rapidly than we are able to consume our raw material inventory that we purchased or committed to purchase in the past at higher prices. As a result, our costs may not fall as rapidly as the selling prices of our products. Until we are able to consume the higher priced raw materials, our gross margins and profitability can be adversely affected.

During periods when the prices for our products are falling because of falling raw material prices, we could be required to write down the value of our inventories. Any such write-down would adversely affect our results of operations and the level of our assets.

We carry our inventories at the lower of cost or market. In periods when the market prices for our products are falling rapidly in response to falling market prices for raw materials, it is possible that we could be required to

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write down the value of our inventories if market prices fall below our costs. Any such write-down would adversely affect our results of operations and the level of our assets. Any such effect could be material.

Our estimates of future selling prices reflect in part the purchase commitments we have from our customers. As a result, defaults on these existing purchase commitments because of the global or local economic and financial conditions or for other reasons could adversely affect our estimates of future selling prices and require additional inventory write-downs.

In the event of a disruption to existing transportation or terminaling facilities for our products or raw materials, alternative transportation and terminaling facilities might not have sufficient capacity to fully serve all of our customers or facilities.

In the event of a disruption of existing transportation or terminaling facilities for our products or raw materials, alternative transportation and terminaling facilities might not have sufficient capacity to fully serve all of our customers or facilities.

An extended interruption in delivering of products to our customers or the supply of natural gas, ammonia or sulfur to our production facilities could have a material adverse effect on our business, financial condition or results of operations.

We are subject to risks associated with our international sales and operations, which could negatively affect our sales to customers in foreign countries as well as our operations and assets in foreign countries. Some of these factors may also make it less attractive to distribute cash generated by our operations outside the United States to our stockholders, or to utilize cash generated by our operations in one country to fund our operations or repayments of indebtedness in another country or to support other corporate purposes.

For fiscal 2013, we derived approximately 61% of our net sales from customers located outside of the United States. As a result, we are subject to numerous risks and uncertainties relating to international sales and operations, including:

• difficulties and costs associated with complying with a wide variety of complex laws, treaties and regulations;

• unexpected changes in regulatory environments;

• increased government ownership and regulation of the economy in the countries we serve;

• political and economic instability, including the possibility for civil unrest, inflation and adverse economic conditions resulting from governmental attempts to reduce inflation, such as imposition of higher interest rates and wage and price controls;

• nationalization of properties by foreign governments;

• the imposition of tariffs, exchange controls, trade barriers or other restrictions; and

• currency exchange rate fluctuations between the U.S. dollar and foreign currencies, particularly the Brazilian real and the Canadian dollar.

The occurrence of any of the above in the countries in which we operate or elsewhere could jeopardize or limit our ability to transact business there and could adversely affect our revenues and operating results and the value of our assets located outside of the United States.

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In addition, tax regulations, currency exchange controls and other restrictions may also make it economically unattractive to:

• distribute cash generated by our operations outside the United States to our stockholders; or

• utilize cash generated by our operations in one country to fund our operations or repayments of indebtedness in another country or to support other corporate purposes.

Our international assets are located in countries with volatile conditions, which could subject us and our assets to significant risks.

We are a global business with substantial assets located outside of the United States and Canada. Our operations in Brazil, Argentina, Chile, China and India are a fundamental part of our business, and we have a joint venture investment in the Miski Mayo mine in Peru that supplies phosphate rock to us. We also recently entered into a Heads of Agreement to form the Northern Promise Joint Venture which would develop a mine and chemical complexes that we presently expect would produce phosphate fertilizers, animal feed, feed grade purified phosphoric acid and sodium tripolyphosphate in the Kingdom of Saudi Arabia. Volatile economic, political and market conditions in these and other emerging market countries may have a negative impact on our operations, operating results and financial condition.

Natural resource extraction is an important part of the economy in Peru, and, in the past, there have been protests against other natural resource operations in Peru. As of the date of this report, there remain numerous social conflicts that exist within the natural resource sector in Peru and as a result there is potential for active protests against natural resource companies. If the Government of Peru’s proactive efforts to address the social and environmental issues surrounding natural resource activities were not successful, protests could extend to or impact the Miski Mayo mine and adversely affect our investment in the Miski Mayo joint venture or the supply of phosphate rock to us from the mine.

Adverse weather conditions, including the impact of potential hurricanes, excess rainfall or drought, have in the past, and may in the future, adversely affect our operations, particularly our Phosphates business, and result in increased costs, decreased production and potential liabilities.

Adverse weather conditions, including the impact of potential hurricanes and excess rainfall, have in the past and may in the future adversely affect our operations, particularly our Phosphates business. In the past, hurricanes have resulted in minor physical damage to our facilities in Florida and Louisiana. In addition, a release of phosphoric acid process wastewater at our Riverview, Florida facility during a hurricane resulted in a small civil fine, settlement for an immaterial amount of claims for natural resource damages by governmental agencies and an ongoing private class action lawsuit.

More significantly, water treatment costs, particularly at our Florida operations, due to high water balances tend to increase significantly following excess rainfall from hurricanes and other adverse weather. Some of our Florida facilities have high water levels that may, from time to time, require treatment. The high water balances at phosphate facilities in Florida also led the Florida Department of Environmental Protection to adopt new rules requiring phosphate production facilities to meet more stringent process water management objectives for phosphogypsum management systems.

If additional excess rainfall or hurricanes continue to occur in coming years, our facilities may be required to take additional measures to manage process water to comply with existing or future requirements and these measures could potentially have a material effect on our business and financial condition.

Adverse weather may also cause a loss of production due to disruptions in our supply chain. For example, oil refineries that supply sulfur to us can be closed as a result of a hurricane and incoming shipments of ammonia can be delayed, disrupting production at our Florida or Louisiana facilities.

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Conversely, drought can also adversely affect us. For example, drought can reduce farmers’ crop yields and the uptake of phosphates and potash, reducing the need for application of additional phosphates and potash for the next planting season. Drought can also lower river levels, adversely affecting delivery of our products to our customers.

Our operations are dependent on having the required permits and approvals from governmental authorities. Denial or delay by a government agency in issuing any of our permits and approvals or imposition of restrictive conditions on us with respect to these permits and approvals may impair our business and operations.

We hold numerous governmental environmental, mining and other permits and approvals authorizing operations at each of our facilities. A decision by a government agency to revoke or substantially modify an existing permit or approval could have a material adverse effect on our ability to continue operations at the affected facility.

Expansion of our operations also is predicated upon securing the necessary environmental or other permits or approvals. Over the next several years, we and our subsidiaries will be continuing our efforts to obtain permits in support of our anticipated Florida mining operations at certain of our properties.

A denial of, or delay in issuing, these permits, the issuance of permits with cost-prohibitive conditions, legal actions that prevent us from relying on permits or revocation of permits, could prevent us from mining at these properties and thereby have a material adverse effect on our business, financial condition or results of operations.

For example:

• In Florida, local community participation has become an important factor in the permitting process for mining companies, and various local counties and other parties in Florida have in the past and continue to file lawsuits challenging the issuance of some of the permits we require. In fiscal 2009, in connection with our efforts to permit an extension of our Four Corners, Florida, phosphate rock mine, non-governmental organizations for the first time filed a lawsuit in federal court against the U.S. Army Corps of Engineers (the “Corps”) with respect to its actions in issuing a federal wetlands permit. The federal wetlands permit issued by the Corps has remained in effect. Mining on the extension commenced and approximately 600 acres were mined and/or disturbed. The remaining 1,200 acres of this extension of our Four Corners mine are not currently in our near-term mining plan. This lawsuit remains pending before the United States District Court for the Middle District of Florida, Jacksonville Division.

• Delays in receiving a federal wetlands permit impacted the scheduled progression of mining activities for the extension of our South Fort Meade, Florida, phosphate rock mine into Hardee County. As a result, we began to idle a portion of our mining equipment at the mine in the latter part of fiscal 2010. In June 2010, the Corps issued the federal wetlands permit. Subsequently, certain non-governmental organizations filed another lawsuit in the United States District Court for the Middle District of Florida, Jacksonville Division, contesting the issuance of this federal wetlands permit, alleging that the Corps’ actions in issuing the permit violated several federal laws relating to the protection of the environment. Preliminary injunctions entered into in connection with this lawsuit resulted in shutdowns or reduced production at our South Fort Meade mine until April 2012. Following a settlement of the lawsuit in February 2012 and court approval, we were able to resume normal production at our South Fort Meade mine.

The periods of shutdown and reduced phosphate rock production at our South Fort Meade mine resulted in costs to suspend operations and idle plant costs. Lower phosphate rock mining production levels also adversely affected gross margin.

• In fiscal 2011, we were notified by the Corps that it planned to conduct an area-wide environmental impact statement (“AEIS”) for the central Florida phosphate district. On June 1, 2012 the Corps

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published notice of availability of the draft AEIS in the Federal Register and announced that it would accept public comment on the draft AEIS through July 31, 2012. We, along with other members of the public, submitted comments for the Corps to consider as it completed the final AEIS. The Corps issued the final AEIS on April 25, 2013. The final AEIS includes information on environmental impacts upon which the Corps will rely in its consideration of our pending federal wetlands permits for our future Ona and DeSoto mines and an extension of our Wingate mine. The Corps has announced that it will issue an addendum to the AEIS to provide a Spanish language version of the Executive Summary section of the final AEIS and to address several minor technical questions raised by commenters. We do not expect that issuance of the addendum will delay our development of permit applications.

We have included additional discussion about permitting for our phosphate mines in Florida under “Environmental, Health and Safety Matters—Permitting” in our Management’s Analysis and in Note 21 of our Consolidated Financial Statements.

We are subject to financial assurance requirements as part of our routine business operations. These financial assurance requirements affect our costs and increase our liquidity requirements. If we were unable to satisfy applicable financial assurance requirements, we might not be able to obtain or maintain permits we need to operate our business as we have in the past. Our need to comply with these requirements could materially affect our business, results of operations or financial condition.

In many cases, as a condition to procuring or maintaining permits and approvals or otherwise, we are required to comply with financial assurance regulatory requirements. The purpose of these requirements is to provide comfort to the government that sufficient funds will be available for the ultimate closure, post-closure care and/or reclamation of our facilities. In most cases, these financial assurance requirements have historically been satisfied without the need for any expenditure of corporate funds to the extent our financial statements meet certain balance sheet and income statement financial strength tests. In the event that we are unable to satisfy these financial strength tests, we must utilize alternative methods of complying with the financial assurance requirements or could be subject to enforcement proceedings brought by relevant government agencies. Potential alternative methods of compliance include negotiating a consent decree that imposes alternative financial assurance or other conditions or, alternatively, providing credit support in the form of cash escrows or trusts, surety bonds from insurance companies, letters of credit from banks, or other forms of financial instruments or collateral to satisfy the financial assurance requirements. Use of these alternative means of financial assurance imposes additional expense on us. Some of them, such as letters of credit, also use a portion of our available liquidity. Other alternative means of financial assurance, such as surety bonds, may in some cases require collateral and generally require us to obtain a discharge of the bonds or to post additional collateral (typically in the form of cash or letters of credit) at the request of the issuer of the bonds. Collateral that is required may be in many forms including letters of credit or other financial instruments that utilize a portion of our available liquidity, or in the form of assets such as real estate, which reduces our flexibility to manage or sell assets. In the past, we have also not always been able to satisfy applicable financial strength tests, and in the future, it is possible that we will not be able to pass the applicable financial strength tests, negotiate consent decrees, establish escrow or trust accounts or obtain letters of credit, surety bonds or other financial instruments on acceptable terms and conditions or at a reasonable cost, or that the form and/or cost of compliance could increase, which could materially adversely affect our business, results of operations or financial condition.

As more fully discussed in Note 21 of our Consolidated Financial Statements, the U.S. Environmental Protection Agency is engaged in an ongoing review of mineral processing industries, including us and other phosphoric acid producers, under the U.S. Resource Conservation and Recovery Act. We are negotiating with the government the terms of a possible settlement of certain matters related to this review. The final terms of this possible settlement are not yet agreed or approved; however, if a settlement can be achieved, in all likelihood our multi-faceted commitments would include as one of its key elements our deposit into a trust fund of an amount currently estimated at $625 million to pre-fund a material portion of our existing asset retirement obligations for closure and post-closure care of our phosphogypsum management systems.

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We have included additional discussion about financial assurance requirements under “Off Balance Sheet Arrangements and Obligations—Other Commercial Commitments” in our Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The other environmental regulations to which we are subject may also have a material adverse effect on our business, financial condition and results of operations.

In addition to permitting and financial assurance requirements, we are subject to numerous other environmental, health and safety laws and regulations in the U.S., Canada, China, Brazil and other countries where we operate. These laws and regulations govern a wide range of matters, including environmental controls, land reclamation, discharges to air and water and remediation of hazardous substance releases. They significantly affect our operating activities as well as the level of our operating costs and capital expenditures. In some international jurisdictions, environmental laws change frequently and it may be difficult for us to determine if we are in compliance with all material environmental laws at any given time.

We are, and may in the future be, involved in legal and regulatory proceedings that could be material to us. These proceedings include “legacy” matters arising from activities of our predecessor companies and from facilities and businesses that we have never owned or operated.

We have in the past been, are currently and may in the future be subject to legal and regulatory proceedings that could be material to our business, results of operations, liquidity or financial condition. These proceedings may be brought by the government or private parties and may arise out of a variety of matters, including:

• Allegations by the government or private parties that we have violated the permitting, financial assurance or other environmental, health and safety laws and regulations discussed above. For example, in connection with possible settlement of matters relating to the U.S. Environmental Protection Agency’s ongoing review of mineral processing industries under the U.S. Resource Conservation and Recovery Act, we anticipate that any settlement would include, in general and among other elements, in addition to the trust fund discussed above, our commitment to capital expenditures likely to exceed $150 million in the aggregate over a period of several years and civil penalties. We are also involved in other proceedings alleging that, or to review whether, we have violated environmental laws in the United States and Brazil.

• Other environmental, health and safety matters, including alleged personal injury, wrongful death, complaints that our operations are adversely impacting nearby farms and other business operations, other property damage, subsidence from mining operations, natural resource damages and other damage to the environment, arising out of operations, including accidents. For example, several actions were initiated by the government and private parties related to releases of phosphoric acid process wastewater at our Riverview, Florida facility during the hurricanes in 2004.

• Antitrust, commercial, tax (including tax audits) and other disputes. For example, we were one of a number of defendants in multiple class-action lawsuits, in which the plaintiffs sought unspecified amounts of damages including treble damages, alleging that we and other defendants conspired to, among other matters, fix the price at which potash was sold in the United States, allocated market shares and customers and fraudulently concealed their anticompetitive conduct. In January 2013, we settled these class action antitrust lawsuits for an aggregate of $43.8 million.

The legal and regulatory proceedings to which we are currently or may in the future be subject can, depending on the circumstances, result in monetary damage awards, fines, penalties, other liabilities, injunctions or other court or administrative rulings that interrupt, impede or otherwise materially affect our business operations, and/or criminal sanctions.

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Among other environmental laws, the U.S. Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) imposes liability, including for cleanup costs, without regard to fault or to the legality of a party’s conduct, on certain categories of persons, including current and former owners and operators of a site and parties who are considered to have contributed to the release of “hazardous substances” into the environment. Under CERCLA, or various U.S. state analogs, one party may, under certain circumstances, be required to bear more than its proportional share of cleanup costs at a site where it has liability if payments cannot be obtained from other responsible parties. As a crop nutrient company working with chemicals and other hazardous substances, we will periodically incur liabilities and cleanup costs, under CERCLA and other environmental laws, with regard to our current or former facilities, adjacent or nearby third-party facilities or offsite disposal locations.

Pending and potential legal and regulatory proceedings may arise out of our present activities, including operations at current facilities. They may also arise out of past activities by us, our predecessor companies and subsidiaries that our predecessors have sold. These past activities were in some cases at facilities that we and our subsidiaries no longer own or operate and may have never owned or operated.

Settlements of legal and regulatory matters frequently require court approval. In the event a court were not to approve of a settlement, it is possible that we and the other party or parties to the matter might not be able to settle it on terms that were acceptable to all parties or that we could be required to accept more stringent terms of settlement than required by the opposing parties.

We have included additional information with respect to pending legal and regulatory proceedings in Note 21 of our Consolidated Financial Statements and in this report in Part I, Item 3, “Legal Proceedings”.

These legal and regulatory proceedings involve inherent uncertainties and could negatively impact our business, results of operations, liquidity or financial condition.

The permitting, financial assurance and other environmental, health and safety laws and regulations to which we are subject may become more stringent over time. This could increase the effects on us of these laws and regulations, and the increased effects could be material.

Continued government and public emphasis on environmental, health and safety issues in the U.S., Canada, China, Brazil and other countries where we operate can be expected to result in requirements that apply to us and our operations that are more stringent than those that are described above and elsewhere in this report. These more stringent requirements may include among other matters increased levels of future investments and expenditures for environmental controls at ongoing operations which will be charged against income from future operations, increased levels of the financial assurance requirements to which we are subject, increased efforts or costs to obtain permits or denial of permits, other new or interpretations of existing statutes or regulations that impose new or more stringent restrictions or liabilities, including liabilities under CERCLA or similar statutes, including restrictions or liabilities related to elevated levels of naturally-occurring radiation that arise from disturbing the ground in the course of mining activities, and other matters that could increase our expenses, capital requirements or liabilities or adversely affect our business, liquidity or financial condition. In addition, to the extent restrictions imposed in countries where our competitors operate, such as China, India, Former Soviet Union countries or Morocco, are less stringent than in the countries where we operate, our competitors could gain cost or other competitive advantages over us. These effects could be material.

Among other matters, there are several ongoing initiatives relating to nutrient discharges. New regulatory restrictions from these initiatives could have a material effect on either us or our customers. For example:

• On December 6, 2010, the EPA adopted numeric water quality standards for the discharge of nitrogen and/or phosphorus into Florida lakes and streams (the “NNC Rule”). The NNC Rule set criteria for such discharges that would require drastic reductions in the levels of nutrients allowed in Florida lakes and

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streams, and would have required us and others to significantly limit discharges of these nutrients in Florida by March, 2012. Subsequently, in a lawsuit that we and others brought, a federal court invalidated the NNC Rule in part, upheld it in part, remanded the invalid parts of the rule to the EPA for reconsideration and reproposal and postponed the effective date of the parts of the rule that the court upheld. The part of the EPA’s NNC Rule that applies to lakes and springs is now in effect, and we are reviewing its potential effect on us. Other portions of the proposed NNC Rule remain pending. The Florida Department of Environmental Protection (“FDEP”) has adopted state rules that could supplant many of the requirements of the NNC Rule, and the EPA and the FDEP have reached an agreement in principle under which the FDEP, not the EPA, would implement numeric nutrient criteria for Florida’s water. The agreement in principle is contingent upon the State of Florida passing further legislation and the EPA adopting further rules. Subject to further legislative, rulemaking and litigation developments, we expect that compliance with the requirements of the NNC Rule could adversely affect our Florida Phosphate operations, require significant capital expenditures and substantially increase our annual operating expenses.

• The Gulf Coast Ecosystem Restoration Task Force, established by executive order of the President and comprised of five Gulf states and eleven federal agencies, has delivered a final strategy for long-term ecosystem restoration for the Gulf Coast. The strategy calls for, among other matters, reduction of the flow of excess nutrients into the Gulf through state nutrient reduction frameworks, new nutrient reduction approaches and reduction of agricultural and urban sources of excess nutrients. Implementation of the strategy will require legislative or regulatory action at the state level. We cannot predict what the requirements of any such legislative or regulatory action could be or whether or how it would affect us or our customers.

• In March 2012, several nongovernmental organizations brought a lawsuit in federal court against the EPA, seeking to require it to establish numeric nutrient criteria for nitrogen and phosphorous in the Mississippi River basin and the Gulf of Mexico. The EPA had previously denied a 2008 petition seeking such standards. On May 30, 2012, the court granted our motion to intervene in this lawsuit. In the event that the EPA were to adopt such a rule, we cannot predict what its requirements would be or the effects it would have on us or our customers.

Regulatory restrictions on greenhouse gas emissions in the United States, Canada or elsewhere could adversely affect us, and these effects could be material.

Various governmental initiatives to limit greenhouse gas emissions are under way or under consideration around the world. These initiatives could restrict our operating activities, require us to make changes in our operating activities that would increase our operating costs, reduce our efficiency or limit our output, require us to make capital improvements to our facilities, increase our energy, raw material and transportation costs or limit their availability, or otherwise adversely affect our results of operations, liquidity or capital resources, and these effects could be material to us.

Governmental greenhouse gas emission initiatives include among others:

• Initiatives in the United States: Various legislative or regulatory initiatives relating to greenhouse gases have been adopted or considered by the U.S. Congress, the EPA or various states. It is possible that future legislation or regulation addressing climate change could adversely affect our operating activities, energy, raw material and transportation costs, results of operations, liquidity or capital resources, and these effects could be material.

• Initiatives in Canada: While the Canadian federal government has withdrawn from the Kyoto Protocol, Canada remains committed to significant greenhouse gas reductions. Public announcements have indicated that future federal targets will align with the previously stated reduction targets for 2020 of

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17 % below 2005 levels through a sector-by-sector approach aligned with the United States, where appropriate. Our Saskatchewan Potash facilities continue to work with the Canadian Fertilizer Institute and Environment Canada on a sector based approach.

In May 2009, the Province of Saskatchewan, in which our Canadian potash mines are located, began to consider legislation intended to lead to the development and administration of climate change regulation in Saskatchewan by the Province rather than the federal government. Key elements under consideration by the Province include a primary focus on achieving the 20% reduction by 2020 through technological advancements and creation of a Technology Fund to finance low-carbon investments by regulated emitters. As part of this initiative, a Climate Change Foundation will be established to fund research and development projects related to reducing and avoiding greenhouse gas emissions, water conservation, biodiversity conservation, energy efficiency, adaptation planning, and education and public awareness.

• International Initiatives. Although international negotiations concerning greenhouse gas emission reductions and other responses to climate change are underway, final obligations in the post-Kyoto Protocol period after 2012 remain undefined. Any new international agreements addressing climate change could adversely affect our operating activities, energy, raw material and transportation costs, results of operations, liquidity or capital resources, and these effects could be material. In addition, to the extent climate change restrictions imposed in countries where our competitors operate, such as China, India, Former Soviet Union countries or Morocco, are less stringent than in the United States or Canada, our competitors could gain cost or other competitive advantages over us.

Future climate change could adversely affect us.

The prospective impact of potential climate change on our operations and those of our customers and farmers remains uncertain. Some scientists have hypothesized that the impacts of climate change could include changes in rainfall patterns, water shortages, changing sea levels, changing storm patterns and intensities, and changing temperature levels and that these changes could be severe. These impacts could vary by geographic location. At the present time, we cannot predict the prospective impact of potential climate change on our results of operations, liquidity or capital resources, or whether any such effects could be material to us.

Some of our competitors and potential competitors have greater resources than we do which may place us at a competitive disadvantage and adversely affect our sales and profitability. These competitors include state-owned and government-subsidized entities in other countries.

We compete with a number of producers in North America and throughout the world, including state-owned and government-subsidized entities. Some of these entities may have greater total resources than we do, and may be less dependent on earnings from crop nutrients sales than we are. In addition, some of these entities may have access to lower cost or government-subsidized natural gas supplies, placing us at a competitive disadvantage. Furthermore, governments as owners of some of our competitors may be willing to accept lower prices and profitability on their products in order to support domestic employment or other political or social goals. To the extent other producers of crop nutrients enjoy competitive advantages or are willing to accept lower profit levels, the price of our products, our sales volumes and our profits may be adversely affected.

We have substantial cash balances that we invest in what we believe to be relatively short-term, highly liquid and high credit quality investments. We intend the investment risks, including counterparty default and lack of liquidity, on these types of investments to be relatively low, but market rates of return on these types of investments are also generally relatively low. In addition, our efforts to manage the investment risks could be unsuccessful. This could result in a material adverse effect on our results of operations, liquidity or financial condition.

Our significant cash flows from operations have resulted in cash and cash-equivalents of approximately $3.7 billion as of May 31, 2013. Our cash and cash-equivalents should continue to increase when we generate cash

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from operations, except to the extent we reinvest in our business or make distributions to our stockholders. We generally invest these cash and cash-equivalents in what we believe to be relatively short-term, highly liquid and high credit quality instruments. Because of these characteristics of our cash and cash-equivalents, the market rates of return on them are lower than our expectations for the return on capital invested in our business operations. Moreover, our efforts to manage investment risk by focusing our investing on short-term, highly liquid and high credit quality investments could prove unsuccessful. The likelihood that our efforts to manage investment risk might prove unsuccessful is heightened during times when there is significant turmoil in the financial markets. As a result, counterparties could default on their obligations to us, or the liquidity of financial instruments that we hold could become impaired. Any such event could have a material adverse effect on our results of operations, liquidity or financial condition.

We have stated our intention to consider repurchases of our shares once restrictions under the agreements relating to the Cargill Transaction expire on November 26, 2013. In the event we repurchase our shares, our substantial cash balances and liquidity could be reduced.

The agreements relating to the Cargill Transaction prevent us from repurchasing our shares in a negotiated transaction or through open market repurchases until November 26, 2013. We have announced our intention to consider repurchasing shares, either in negotiated transactions with the Class A shareholders or through open market repurchases, once the restrictions under the agreements relating to the Cargill Transaction expire. We have also indicated our willingness to use our available debt capacity, as well as our surplus cash, to fund share repurchases, financial assurance requirements arising in our business and strategic investments. To the extent we utilize our surplus cash and/or available debt capacity for these purposes, our available cash and liquidity could be reduced.

We do not own a controlling equity interest in our non-consolidated companies, some of which are foreign companies, and therefore our operating results and cash flow may be materially affected by how the governing boards and majority owners operate such businesses. There may also be limitations on monetary distributions from these companies that are outside of our control. Together, these factors may lower our equity earnings or cash flow from such businesses and negatively impact our results of operations.

We recently entered into a Heads of Agreement to form the Northern Promise Joint Venture that would develop a mine and chemical complexes for an estimated $7 billion that would produce phosphate fertilizers, animal feed, feed grade purified phosphoric acid and sodium tripolyphosphate in the Kingdom of Saudi Arabia. We expect to have a 25% interest in the joint venture and expect our cash investment will be up to $1 billion, funded over a four-year period. The success of this joint venture will depend on, among other matters, the ability of Mosaic, Ma’aden and SABIC to agree upon definitive agreements relating to the Northern Promise Joint Venture, the final terms of any such definitive agreements, the ability of the Northern Promise Joint Venture to obtain project financing in acceptable amounts and upon acceptable terms, the future success of current plans for the Northern Promise Joint Venture and any future changes in those plans.

We also hold minority ownership interests in a joint venture that owns and operates a phosphate rock mine and in other companies that are not controlled by us. We expect that the operations and results of the Northern Promise Joint Venture will be, and the operations or results of some of the other joint ventures or companies are, significant to us, and their operations can affect our earnings. Because we do not control these companies either at the board or stockholder levels and because local laws in foreign jurisdictions and contractual obligations may place restrictions on monetary distributions by these companies, we cannot ensure that these companies will operate efficiently, pay dividends, or generally follow the desires of our management by virtue of our board or stockholder representation. As a result, these companies may contribute less than anticipated to our earnings and cash flow, negatively impacting our results of operations and liquidity.

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Strikes or other forms of work stoppage or slowdown could disrupt our business and lead to increased costs.

Our financial performance is dependent on a reliable and productive work force. A significant portion of our workforce is covered by collective bargaining agreements with unions. Unsuccessful contract negotiations or adverse labor relations could result in strikes or slowdowns. Any disruptions may decrease our production and sales or impose additional costs to resolve disputes. The risk of adverse labor relations may increase as our profitability increases because labor unions’ expectations and demands generally rise at those times.

Our Esterhazy mine has had an inflow of salt saturated brine for more than 25 years.

Since December 1985, we have had inflows of salt saturated brine into our Esterhazy, Saskatchewan mine. Over the past century, several potash mines experiencing water inflow problems have flooded. In order to control brine inflows at Esterhazy, we have incurred, and will continue to incur, expenditures, certain of which, due to their nature, have been capitalized, while others have been charged to expense.

At various times, we experience changing amounts and patterns of brine inflows at the Esterhazy mine. Periodically, some of these inflows have exceeded available pumping capacity. If that were to continue for several months without abatement, it could exceed our available storage capacity and ability to effectively manage the brine inflow. This could adversely affect production at the Esterhazy mine. See “Key Factors that can Affect Results of Operations and Financial Condition” and “Potash Net Sales and Gross Margin” in our Management’s Analysis for a discussion of costs and other information relating to the brine inflows. The brine inflow is variable, resulting in both net inflows (the rate of inflow is less the amount we are pumping out of the mine) and net outflows (when we are pumping more brine out of the mine than the rate of inflow). There can be no assurance that:

• our pumping, surface storage, underground storage or injection well capacities for brine will continue to be sufficient, or that the pumping, grouting and other measures that we use to manage the inflows at the Esterhazy mine will continue to be effective;

• there will not be a disruption in the supply of calcium chloride, which is a primary material used to reduce or prevent the flow of incoming brine;

• our estimates of the volumes of net inflows or net outflows of brine, or storage capacity for brine at the Esterhazy mine, are accurate;

• the volumes of the brine inflows will not fluctuate from time to time, the rate of the brine inflows will not be greater than our prior experience or current assumptions, changes in inflow patterns will not adversely affect our ability to locate and manage the inflows, or that any such fluctuations, increases or changes would not be material; and

• the expenditures to control the inflows will be consistent with our prior experience or future estimates.

From time to time, new or improved technology becomes available to facilitate our remediation of the inflows, such as horizontal drilling techniques. Taking advantage of these new or improved technologies may require significant capital expenditures and/or may increase our costs of remediation.

It is possible that the costs of remedial efforts at Esterhazy may further increase beyond our current estimates in the future and that such an increase could be material, or, in the extreme scenario, that the water inflows, risk to employees or remediation costs may increase to a level which would cause us to change our mining processes or abandon the mine, which in turn could significantly negatively impact our results of operations, liquidity or capital resources.

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Due to the ongoing brine inflow at Esterhazy, underground operations at this facility are currently not insurable for water incursion problems. Our mines at Colonsay, Saskatchewan, and Carlsbad, New Mexico, are also subject to the risks of inflow of water as a result of our shaft mining operations.

Other accidents occurring in the course of our operating activities could result in significant liabilities, interruptions or shutdowns of facilities or the need for significant safety or other expenditures.

We engage in mining and industrial activities that can result in serious accidents. Mining, in particular, can be a dangerous activity. If our safety procedures are not effective, or if an accident occurs, we could be subject to liabilities arising out of personal injuries or death, our operations could be interrupted and we might have to shut down or abandon affected facilities. Accidents could cause us to expend significant amounts to remediate safety issues or to repair damaged facilities. For example:

• Some of our mines are subject to potential damage from earthquakes.

The excavation of mines can result in potential seismic events or can increase the likelihood or potential severity of a seismic event. The rise and fall of water levels, such as those arising from the brine inflows and our remediation activities at our Esterhazy mine, can also result in or increase the likelihood or potential severity of a seismic event. Our Esterhazy mine has experienced minor seismic events from time to time. A significant seismic event at one of our mines could result in damage to or flooding of the mine or, in the extreme scenario, cause us to change our mining process or abandon the mine.

• Our underground potash shaft mines are subject to risk from fire. In the event of a fire, if our emergency procedures are not successful, we could have significant injuries or deaths. In addition, fire at one of our underground shaft mines could halt our operations at the affected mine while we investigate the origin of the fire or for longer periods for remedial work or otherwise.

Our underground potash shaft mines at Esterhazy and Colonsay, Saskatchewan and Carlsbad, New Mexico are subject to risk from fire. Any failure of our safety procedures in the future could result in serious injuries or death, or shutdowns, which could result in significant liabilities and/or impact on the financial performance of our Potash business, including a possible material adverse effect on our results of operations, liquidity or financial condition.

• We handle significant quantities of ammonia at several of our facilities. If our safety procedures are not effective, an accident involving our ammonia operations could result in serious injuries or death, or result in the shutdown of our facilities.

We produce ammonia at our Faustina, Louisiana phosphate concentrates plant, use ammonia in significant quantities at all of our Florida and Louisiana phosphates concentrates plants and store ammonia at some of our distribution facilities. We are considering a possible significant expansion of our ammonia production at our Faustina, Louisiana phosphate concentrates plant. For our Florida phosphates concentrates plants, ammonia is received at terminals in Tampa and transported by pipelines to our facilities. Our ammonia is generally stored and transported at high pressures. An accident could occur that could result in serious injuries or death, or the evacuation of areas near an accident. An accident could also result in property damage or the shutdown of our Florida or Louisiana phosphates concentrates plants, the ammonia terminals or pipelines serving those plants or our other ammonia storage and handling facilities. As a result, an accident involving ammonia could have a material adverse effect on our results of operations, liquidity or financial condition.

• We also use or produce other hazardous or volatile chemicals at some of our facilities. If our safety procedures are not effective, an accident involving these other hazardous or volatile chemicals could result in serious injuries or death, or result in the shutdown of our facilities.

We use sulfuric acid in the production of concentrated phosphates in our Florida and Louisiana operations. Some of our Florida and Louisiana facilities produce fluorosilicic acid, which is a hazardous chemical, for resale to third parties. We also use or produce other hazardous or volatile chemicals at

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some of our facilities. An accident involving any of these chemicals could result in serious injuries or death, or evacuation of areas near an accident. An accident could also result in property damage or shutdown of our facilities, or cause us to expend significant amounts to remediate safety issues or to repair damaged facilities. As a result, an accident involving any of these chemicals could have a material adverse effect on our results of operations, liquidity or financial condition.

Deliberate, malicious acts, including terrorism, could damage our facilities, disrupt our operations or injure employees, contractors, customers or the public and result in liability to us.

Intentional acts of destruction could hinder our sales or production and disrupt our supply chain. Our facilities could be damaged or destroyed, reducing our operational production capacity and requiring us to repair or replace our facilities at substantial cost. Employees, contractors and the public could suffer substantial physical injury for which we could be liable. Governmental authorities may impose security or other requirements that could make our operations more difficult or costly. The consequences of any such actions could adversely affect our operating results and financial condition.

We may be adversely affected by changing antitrust laws to which we are subject. Increases in crop nutrient prices can increase the scrutiny to which we are subject under these laws.

We are subject to antitrust and competition laws in various countries throughout the world. We cannot predict how these laws or their interpretation, administration and enforcement will change over time. Changes in antitrust laws globally, or in their interpretation, administration or enforcement, may limit our existing or future operations and growth, or the operations of Canpotex and PhosChem, which serve as export associations for our Potash and Phosphates businesses, respectively. Increases in crop nutrient prices have in the past resulted in increased scrutiny of the crop nutrient industry under antitrust and competition laws and can increase the risk that these laws could be interpreted, administered or enforced in a manner that could affect our operating practices or impose liability on us in a manner that could materially adversely affect our operating results and financial condition.

We may be adversely affected by other changes in laws resulting from increases in food and crop nutrient prices.

Increases in prices for, among other things, food, fuel and crop inputs (including crop nutrients) have in the past been the subject of significant discussion by various governmental bodies and officials throughout the world. In response to increases, it is possible that governments in one of more of the locations in which we operate or where we or our competitors sell our products could take actions that could affect us. Such actions could include, among other matters, changes in governmental policies relating to agriculture and biofuels (including changes in subsidy levels), price controls, tariffs, windfall profits taxes or export or import taxes. Any such actions could materially adversely affect our operating results and financial condition.

Our competitive position could be adversely affected if we are unable to participate in continuing industry consolidation.

Most of our products are readily available from a number of competitors, and price and other competition in the crop nutrient industry is intense. In addition, crop nutrient production facilities and distribution activities frequently benefit from economies of scale. As a result, particularly during pronounced cyclical troughs, the crop nutrient industry has a long history of consolidation. Mosaic itself is the result of a number of industry consolidations. We expect consolidation among crop nutrient producers could continue. Our competitive position could suffer to the extent we are not able to expand our own resources either through consolidations, acquisitions, joint ventures or partnerships. In the future, we may not be able to find suitable companies to combine with, assets to purchase or joint venture or partnership opportunities to pursue. Even if we are able to locate desirable opportunities, we may not be able to enter into transactions on economically acceptable terms. If we do not

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successfully participate in continuing industry consolidation, our ability to compete successfully could be adversely affected and result in the loss of customers or an uncompetitive cost structure, which could adversely affect our sales and profitability.

Our strategy for managing market risk may not be effective.

Our businesses are affected by fluctuations in market prices for our products, the purchase price of natural gas, ammonia and sulfur consumed in operations, freight and shipping costs and foreign currency exchange rates. We periodically enter into derivatives and forward purchase contracts to mitigate some of these risks. However, our strategy may not be successful in minimizing our exposure to these fluctuations. See “Market Risk” in our Management’s Analysis and Note 15 of our Consolidated Financial Statements that is incorporated by reference in this report in Part II, Item 8.

A shortage of railcars, barges and ships for carrying our products and the raw materials we use in our business could result in customer dissatisfaction, loss of production or sales, and higher transportation or equipment costs.

We rely heavily upon truck, rail, barge and ocean freight transportation to obtain the raw materials we need and to deliver our products to our customers. In addition, the cost of transportation is an important part of the final sale price of our products. Finding affordable and dependable transportation is important in obtaining our raw materials and to supply our customers. Higher costs for these transportation services or an interruption or slowdown due to factors including high demand, high fuel prices, labor disputes, layoffs or other factors affecting the availability of qualified transportation workers, adverse weather or other environmental events, or changes to rail, barge or ocean freight systems, could negatively affect our ability to produce our products or deliver them to our customers, which could affect our performance and results of operations.

Strong demand for grain and other products and a strong world economy increase the demand for and reduce the availability of transportation, both domestically and internationally. Shortages of railcars, barges and ocean transport for carrying product and increased transit time may result in customer dissatisfaction, loss of sales and higher equipment and transportation costs. In addition, during periods when the shipping industry has a shortage of ships the substantial time needed to build new ships prevents rapid market response. Delays and missed shipments due to transportation shortages, including vessels, barges, railcars and trucks, could result in customer dissatisfaction or loss of sales potential, which could negatively affect our performance and results of operations.

A lack of customers’ access to credit can adversely affect their ability to purchase our products.

Some of our customers require access to credit to purchase our products. A lack of available credit to customers in one or more countries, due to global or local economic conditions or for other reasons, could adversely affect demand for crop nutrients.

We extend trade credit to our customers and guarantee the financing that some of our customers use to purchase our products. Our results of operations may be adversely affected if these customers are unable to repay the trade credit from us or financing from their banks. Increases in prices for crop nutrient, other agricultural inputs and grain may increase this risk.

We extend trade credit to our customers in the United States and throughout the world, in some cases for extended periods of time. In Brazil, where there are fewer third-party financing sources available to farmers, we also have several programs under which we guarantee customers’ financing from financial institutions that they use to purchase our products. As our exposure to longer trade credit extended throughout the world and use of guarantees in Brazil increases, we are increasingly exposed to the risk that some of our customers will not pay us or the amounts we have guaranteed. Additionally, we become increasingly exposed to risk due to weather and crop growing conditions, fluctuations in commodity prices or foreign currencies, and other factors that influence

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the price, supply and demand for agricultural commodities. Significant defaults by our customers could adversely affect our financial condition and results of operations.

Increases in prices for crop nutrients increase the dollar amount of our sales to customers. The larger dollar value of our customers’ purchases may also lead them to request longer trade credit from us and/or increase their need for us to guarantee their financing of our products. Either factor could increase the amount of our exposure to the risk that our customers may be unable to repay the trade credit from us or financing from their banks that we guarantee. In addition, increases in prices for other agricultural inputs and grain may increase the working capital requirements, indebtedness and other liabilities of our customers, increase the risk that they will default on the trade credit from us or their financing that we guarantee, and decrease the likelihood that we will be able to collect from our customers in the event of their default.

Tax rules governing the Cargill Transaction limited our ability to execute certain actions for a period of time following the Cargill Transaction and, if our procedures for compliance with those restrictions were ineffective, notwithstanding the IRS ruling and tax opinion issued to Cargill in connection with the Cargill Transaction, we could owe significant tax-related indemnification liabilities to Cargill.

The IRS issued a ruling to the effect that the Split-off that is part of the Cargill Transaction would be tax-free to Cargill and its stockholders, and in connection with the completion of the Cargill Transaction, Cargill received a tax opinion relating to certain tax consequences of the Cargill Transaction. Notwithstanding the IRS ruling and tax opinion, however, the Split-off and Debt Exchanges could be taxable to Cargill and its stockholders under certain circumstances. Therefore, we and Cargill agreed to tax-related restrictions and indemnities set forth in a tax agreement related to the Cargill Transaction, under which we were restricted or deterred from taking certain actions until May 26, 2013, including (i) redeeming or purchasing our stock in excess of agreed-upon amounts; (ii) issuing any equity securities in excess of agreed upon amounts; (iii) approving or recommending a third party’s acquisition of us; (iv) permitting any merger or other combination of Mosaic or MOS Holdings; and (v) entering into an agreement for the purchase of any interest in Mosaic or MOS Holdings, subject to certain exceptions. We agreed to indemnify Cargill for taxes and tax-related losses imposed on Cargill as a result of the Split-off and/or Debt Exchange failing to qualify as tax-free, if the taxes and related losses are attributable to, arise out of or result from certain prohibited acts or to any breach of, or inaccuracy in, any representation, warranty or covenant made by us in the tax agreement referred to above. The taxes and tax-related losses of Cargill would be material if these transactions fail to qualify as tax-free, and, if our procedures for avoiding any of these prohibited acts or breaches were ineffective, this indemnity would result in material liabilities from us to Cargill that could have a material adverse effect on us. For a further discussion of the restrictions and indemnities set forth in the agreements related to the Cargill Transaction, please see Note 2 to our Consolidated Financial Statements.

Limitations on equity buybacks.

The agreements relating to the Cargill Transaction restrict our ability to buy back our shares (other than self-tender offers to all of our stockholders complying with Rule 13e-4 under the Securities Exchange Act of 1934). This restriction applies until November 26, 2013. The restriction may prevent us from pursuing business opportunities that may arise prior to expiration of such restriction. Please see Note 2 to our Consolidated Financial Statements for a summary of this restriction. In addition, we are restricted from buying shares of Class A Common Stock at a premium to the then-current market price of the Common Stock.

Stock sales following the Split-off may affect the stock price of our common stock.

The agreements relating to the Cargill Transaction provide for the possibility of another series of underwritten secondary public offerings, which would begin no earlier than May 26, 2013, with respect to our shares received by Exchanging Cargill Stockholders (including shares received but not previously sold by the MAC Trusts). This second series of underwritten secondary public offerings is expected to be completed, at the latest, by

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October 26, 2015. These sales could result in downward pressure on the stock price of our common stock. The MAC Trusts have notified us that they will not exercise their first right to request such an offering during the period of May 26, 2013 through October 26, 2013.

Provisions in our restated certificate of incorporation and bylaws and of Delaware law may prevent or delay an acquisition of our company, which could decrease the trading price of our common stock.

Our restated certificate of incorporation and our amended and restated bylaws contain provisions that could have the effect of rendering more difficult or discouraging an acquisition deemed undesirable by our board of directors. These provisions include the ability of our board of directors to issue preferred stock without stockholder approval, the classification of our board of directors into three classes, a prohibition on stockholder action by written consent and the inability of our stockholders to request that our board of directors or chairman of our board call a special meeting of stockholders.

We are also subject to Section 203 of the Delaware General Corporation Law. In general, Section 203 prohibits a publicly held Delaware corporation from engaging in a “business combination” with an “interested stockholder” for a period of three years from the date of the transaction in which the person became an interested stockholder, unless the interested stockholder attained this status with the approval of the board of directors or unless the business combination was approved in a prescribed manner. A “business combination” includes mergers, asset sales and other transactions resulting in a financial benefit to the interested stockholder. Subject to exceptions, an “interested stockholder” is a person who, together with affiliates and associates, owns, or within three years owned, 15% or more of the corporation’s voting stock. This statute could prohibit or delay the accomplishment of mergers or other takeover or change in control attempts with respect to us and, accordingly, may discourage attempts to acquire us.

These provisions apply not only when they may protect our stockholders from coercive or otherwise unfair takeover tactics but even if the offer may be considered beneficial by some stockholders and could delay or prevent an acquisition that our board of directors determines is not in our best interests or those of our stockholders.

Our success will increasingly depend on our ability to attract and retain highly qualified and motivated employees.

We believe our continued success depends on the collective abilities and efforts of our employees. Like many businesses, a significant number of our employees, including some of our most highly skilled employees with specialized expertise in potash and phosphates operations, will be approaching retirement age throughout the next decade and beyond. In addition, we compete for a talented workforce with other businesses, particularly within the mining and chemicals industries in general and the crop nutrients industry in particular. Our expansion plans are highly dependent on our ability to attract, retain and train highly qualified and motivated employees who are essential to the success of our ongoing operations as well as to our expansion plans. If we were to be unsuccessful in attracting, retaining and training the employees we require, our ongoing operations and expansion plans could be materially and adversely affected.

Future technological innovation could affect our business.

Future technological innovation such as the development of seeds that require less crop nutrients, or developments in the application of crop nutrients, if they occur, could have the potential to adversely affect the demand for our products and our results of operations, liquidity and capital resources.

The success of our Potash expansion plans and other strategic initiatives depends on our ability to effectively manage these initiatives.

We have initiated several significant strategic initiatives, principally our plans to expand the annual production capacity of our Potash business and the prospective Northern Promise Joint Venture. These strategic initiatives

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involve capital and other expenditures of several billions of dollars over a number of years and require effective project management. To the extent the processes we (or, for the Northern Promise Joint Venture, we together with Ma’aden and SABIC) put in place to manage these initiatives are not effective, our capital expenditure and other costs may exceed our expectations or the benefits we expect from these initiatives might not be fully realized.

Item 1B. Unresolved Staff Comments.

None.

Item 2. Properties.

Information regarding our plant and properties is included in Part I, Item 1, “Business,” of this report.

Item 3. Legal Proceedings.

We have included information about legal and environmental proceedings in Note 21 of our Notes to Consolidated Financial Statements. This information is incorporated herein by reference.

We are also subject to the following legal and environmental proceedings in addition to those described in Note 21 of our Notes to Consolidated Financial Statements:

• Water Quality Regulations for Nutrient Discharges in Florida. On December 7, 2010, we filed a lawsuit in the U.S. District Court for the Northern District of Florida, Pensacola Division, against the EPA challenging a rule adopted by the EPA that set numeric water quality standards (the “NNC Rule”) for nitrogen and/or phosphorus in Florida lakes and streams. Our lawsuit was subsequently transferred to the U.S. District Court for the Northern District of Florida, Tallahassee Division (the “Tallahassee District Court”), for consolidation with a number of lawsuits brought by other parties challenging the NNC Rule. The NNC Rule set criteria that would require drastic reductions in the levels of nutrients discharged into Florida lakes and streams, and would have required us and others to significantly limit discharges of these nutrients in Florida beginning in March 2012. Our lawsuit asserted, among other matters, that the criteria set by EPA did not comport with the requirements of the Federal Water Pollution Control Act or the Administrative Procedure Act, and sought a declaration that the NNC Rule is arbitrary, capricious, an abuse of discretion and not in accordance with law, and vacating the NNC Rule and remanding it for further rulemaking proceedings consistent with the Federal Water Pollution Control Act and its implementing regulations.

In February 2012, the Tallahassee District Court invalidated the NNC Rule in part and upheld it in part, and remanded the invalid parts of the rule to the EPA for reconsideration and reproposal. The Tallahassee District Court subsequently ordered that the effective date of the parts of the NNC Rule that the court had upheld and any parts re-proposed to comply with the court’s order be postponed until January 2013. Although we have not appealed, several other parties have appealed certain of the Tallahassee District Court’s rulings.

The NNC Rule includes an option to seek approval for alternative water quality criteria for specific waters or stream segments, where the science or water quality data demonstrated that the alternative criteria would be adequately protective. We are exploring the use of alternative criteria, where appropriate; however, we cannot presently predict whether we will be able to obtain approval of site-specific alternative criteria or the extent to which such approved criteria would moderate the impacts of the NNC Rule on us.

The Florida Department of Environmental Protection (the “FDEP”) has adopted state rules that could supplant many, or potentially all, of the requirements of the NNC Rule and mitigate some of the

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potential adverse effects of the NNC Rule. In June 2012, the FDEP rule was upheld by a state administrative law judge in an administrative proceeding challenging the rule brought by certain nongovernmental organizations and the FDEP rule was submitted to the EPA for approval. In July 2012, the nongovernmental organizations appealed the state administrative law judge’s decision upholding the FDEP rule to the Florida First District Court of Appeal. In February 2013, the Florida First District Court of Appeal upheld the administrative law judge’s decision.

In November 2012, the EPA approved the FDEP rule. The EPA also proposed two rules that would establish new federal nutrient criteria for (i) streams and unimpaired lakes, and (ii) coastal waters, certain estuaries not covered in the FDEP rule and flowing waters in South Florida. Pursuant to an order of the Tallahassee District Court, the EPA must adopt final versions of these rules by August 31, 2013 and September 30, 2013, respectively.

The EPA has stated that the criteria in the two new proposed rules either would supplement the scope of the FDEP rule, or would apply to all waters in Florida in the event that the FDEP rule does not go into effect. By its terms, the FDEP rule will not take effect until EPA withdraws the criteria upheld by the Tallahassee District Court in February 2012. The EPA also suggested that if FDEP takes further action or provides clarifications to the existing FDEP rule that would address nutrient discharges to waters not covered by the FDEP rule, the EPA would take other action, including not finalizing its proposed rules and withdrawing its current nutrient rules. In connection with that process, the EPA proposed to extend the effective date of all of its final NNC Rules from January 6, 2013 until November 15, 2013.

Separately, in November 2012, the EPA proposed total maximum daily load standards, including standards for total nitrogen and total phosphorus, for a number of waterways flowing into Tampa Bay in Florida. The waterways include sections of the Alafia River, which is a receiving water for permitted discharges from several of our operations.

On March 15, 2013, the EPA and the FDEP announced that the agencies had reached an agreement in principle under which the FDEP, not the EPA, would implement numeric nutrient criteria for Florida’s waters. Among other things, the agreement is contingent upon the State of Florida passing legislation requiring the development of numeric nutrient criteria for certain categories of other water bodies and the FDEP adopting by rule a standard for implementing numeric nutrient criteria in Florida.

On April 12, 2013, the Tallahassee District Court granted the EPA’s motion to delay the effective date of the EPA’s rules establishing downstream protection values but denied the EPA’s motion to delay the effective date of the EPA’s NNC Rule for lakes and springs, which are now in effect. We are reviewing the potential effect on us of the NNC Rule for lakes and springs.

Subject to further litigation or rulemaking developments, we expect that compliance with the requirements of nutrient criteria rules could adversely affect our Florida Phosphate operations, require significant capital expenditures and substantially increase our annual operating expenses.

• Nutrient Discharges into the Gulf of Mexico and Mississippi River Basin. On March 13, 2012, the Gulf Restoration Network, the Missouri Coalition for the Environment, the Iowa Environmental Council, the Tennessee Clean Water Network, the Minnesota Center for Environmental Advocacy, Sierra Club, the Waterkeeper Alliance, Inc., the Prairie Rivers Network, the Kentucky Waterways Alliance, the Environmental Law & Policy Center and the Natural Resources Defense Council, Inc. brought a lawsuit in the U.S. District Court for the Eastern District of Louisiana against the EPA, seeking to require it to establish numeric nutrient criteria for nitrogen and phosphorous in the Mississippi River basin and the Gulf of Mexico. The EPA had previously denied a 2008 petition seeking such standards. On May 30, 2012, the court granted our motion to intervene in this lawsuit.

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We intend to defend vigorously the EPA’s decision not to establish numeric nutrient criteria for nitrogen and phosphorous in the Mississippi River basin and the Gulf of Mexico. In the event that the EPA were to adopt such a rule, we cannot predict what its requirements would be or the effects it would have on us or our customers.

Item 4. Mine Safety Disclosures.

Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K is included in Exhibit 95 to this report.

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PART II.

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

We have included information about the market price of, dividends on and the number of holders of our common stock under “Quarterly Results (Unaudited)” in the financial information that is incorporated by reference in this report in Part II, Item 8, “Financial Statements and Supplementary Data.”

The principal stock exchange on which our common stock is traded is The New York Stock Exchange.

The following provides information related to equity compensation plans:

Plan category	Number of shares to be issued upon exercise of outstanding  options, warrants and rights (a)		Weighted-average exercise price of outstanding options, warrants and  rights (b)		Number of shares remaining available for future issuance under equity compensation plans (excluding shares reflected in first column)
Equity compensation plans approved by stockholders		3,393,359	$	43.93		16,429,641
Equitycompensation plans not approved by stockholders		-		-		-
Total		3,393,359	$	43.93		16,429,641

^(a)  Includes grants of stock options, time-based restricted stock units, performance units and retention awards. For purposes of the table above, the number of shares to be issued under a performance unit reflects the maximum number of shares of our common stock that may be issued pursuant to such performance unit; the actual number of shares to be issued will depend on the change in the market price of our common stock over a three-year vesting period, with no shares issued if the market price of a share of our common stock at the vesting date (plus, for grants made on and after July 18, 2012 dividends thereon), is less than 50% of its market price on the date of grant and the maximum number issued only if the market price of a share of our common stock at the vesting date (plus, for grants made on and after July 18, 2012 dividends thereon) is at least twice its market price on the date of grant. For purposes of the table above, the number of shares to be issued under a retention award reflects the fixed dollar value of the award divided by the market price of a share of our common stock at the close of business on May 31, 2013. A retention award will be paid if the participant is employed by us on July 21, 2014.

^(b)  Includes weighted average exercise price of stock options only.

Pursuant to our equity compensation plans, we have granted and may in the future grant employee stock options to purchase shares of common stock of Mosaic for which the purchase price may be paid by means of delivery to us by the optionee of shares of common stock of Mosaic that are already owned by the optionee (at a value equal to market value on the date of the option exercise). During the period covered by this report, no options to purchase shares of common stock of Mosaic were exercised for which the purchase price was so paid.

Item 6. Selected Financial Data.

We have included selected financial data for our fiscal years 2009 through 2013 under “Five Year Comparison,” in the financial information that is included in this report in Part II, Item 8, “Financial Statements and Supplementary Data.” This information is incorporated herein by reference.

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operation.

The Management’s Discussion and Analysis of Financial Condition and Results of Operations listed in the Financial Table of Contents included in this report is incorporated herein by reference.

Item 7A. Quantitative and Qualitative Disclosures about Market Risk.

We have included a discussion about market risks under “Market Risk” in the Management’s Analysis that is included in this report in Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operation”. This information is incorporated herein by reference.

Item 8. Financial Statements and Supplementary Data.

Our Consolidated Financial Statements, the Notes to Consolidated Financial Statements, the report of our Independent Registered Public Accounting Firm, and the information under “Quarterly Results” listed in the Financial Table of Contents included in this report are incorporated herein by reference. All other schedules for which provision is made in the applicable accounting regulation of the SEC are not required under the related instructions or are inapplicable, and therefore, have been omitted.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

None.

Item 9A. Controls and Procedures.

(a) Disclosure Controls and Procedures

We maintain disclosure controls and procedures designed to ensure that information required to be disclosed in our filings under the Securities Exchange Act of 1934 (the “Exchange Act”) is (i) recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and (ii) accumulated and communicated to management, including our principal executive officer and our principal financial officer, to allow timely decisions regarding required disclosures. Our management, with the participation of our principal executive officer and our principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures as of the end of the period covered by this Annual Report on Form 10-K. Our principal executive officer and our principal financial officer have concluded, based on such evaluations, that our disclosure controls and procedures were effective for the purpose for which they were designed as of the end of such period.

(b) Management’s Report on Internal Control Over Financial Reporting

We have included management’s report on internal control over financial reporting under “Management’s Report on Internal Control Over Financial Reporting” listed in the Financial Table of Contents included in this report.

We have included our registered public accounting firm’s attestation report on our internal controls over financial reporting under “Report of Independent Registered Public Accounting Firm” listed in the Financial Table of Contents included in this report.

This information is incorporated herein by reference.

(c) Changes in Internal Control Over Financial Reporting

Our management, with the participation of our principal executive officer and our principal financial officer, have evaluated any change in internal control over financial reporting that occurred during the fiscal quarter

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ended May 31, 2013 in accordance with the requirements of Rule 13a-15(d) promulgated by the SEC under the Exchange Act. There were no changes in internal control over financial reporting identified in connection with management’s evaluation that occurred during the fiscal quarter ended May 31, 2013 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information

None.

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PART III.

Item 10. Directors, Executive Officers and Corporate Governance.

The information contained under the headings “Proposal No. 1—Election of Directors,” “Corporate Governance—Committees of the Board of Directors,” and “Section 16(a) Beneficial Ownership Reporting Compliance” included in our definitive proxy statement for our 2013 annual meeting of stockholders and the information contained under “Executive Officers of the Registrant” in Part I, Item 1, “Business,” in this report is incorporated herein by reference.

We have a Code of Business Conduct and Ethics within the meaning of Item 406 of Regulation S-K adopted by the SEC under the Exchange Act that applies to our principal executive officer, principal financial officer and principal accounting officer. Our Code of Business Conduct and Ethics is available on Mosaic’s website (www.mosaicco.com), and we intend to satisfy the disclosure requirement under Item 5.05 of Form 8-K regarding any amendment to, or waiver from, a provision of our code of ethics by posting such information on our website. The information contained on Mosaic’s website is not being incorporated herein.

Item 11. Executive Compensation.

The information under the headings “Director Compensation”, “Executive Compensation”, and “Compensation Committee Interlocks and Insider Participation” included in our definitive proxy statement for our 2013 annual meeting of stockholders is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information under the headings “Beneficial Ownership of Securities” and “Certain Relationships and Related Transactions” included in our definitive proxy statement for our 2013 annual meeting of stockholders is incorporated herein by reference. The table set forth in Part II, Item 5, “Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities,” of this report is also incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence.

The information under the headings “Corporate Governance—Board Independence,” “Corporate Governance—Committees of the Board of Directors,” “Corporate Governance—Other Policies Relating to the Board of Directors—Policy and Procedures Regarding Transactions with Related Persons,” and “Certain Relationships and Related Transactions” included in our definitive proxy statement for our 2013 annual meeting of stockholders is incorporated herein by reference.

Item 14. Principal Accounting Fees and Services.

The information included under “Audit Committee Report and Payment of Fees to Independent Registered Public Accounting Firm—Fees Paid to Independent Registered Public Accounting Firm” and “Audit Committee Report and Payment of Fees to Independent Registered Public Accounting Firm—Pre-approval of Independent Registered Public Accounting Firm Services” included in our definitive proxy statement for our 2013 annual meeting of stockholders is incorporated herein by reference.

54

PART IV.

Item 15. Exhibits and Financial Statement Schedules

(a) (1) Consolidated Financial Statements filed as part of this report are listed in the Financial Table of Contents included in this report and incorporated by reference in this report in Part II, Item 8, “Financial Statements and Supplementary Data.”

(2) All schedules for which provision is made in the applicable accounting regulations of the SEC are listed in this report in Part II, Item 8, “Financial Statements and Supplementary Data.”

(3) Reference is made to the Exhibit Index beginning on page E-1 hereof.

(b) Exhibits

Reference is made to the Exhibit Index beginning on page E-1 hereof.

(c) Summarized financial information of 50% or less owned persons is included in Note 9 of Notes to Consolidated Financial Statements. Financial statements and schedules are omitted as none of such persons are significant under the tests specified in Regulation S-X under Article 3.09 of general instructions to the financial statements.

55

*********************************************

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

    THE MOSAIC COMPANY

(Registrant)

/s/ James T. Prokopanko

James T. Prokopanko

Chief Executive Officer and President

Date: July 16, 2013

S-1

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated:

Name	Title	Date
/s/ James T. Prokopanko James T. Prokopanko	Chief Executive Officer and President and Director (principal executive officer)	July 16, 2013
/s/ Lawrence W. Stranghoener Lawrence W. Stranghoener	Executive Vice President and Chief Financial Officer (principal financial officer)	July 16, 2013
/s/ Anthony T. Brausen Anthony T. Brausen	Senior Vice President—Finance and Chief Accounting Officer (principal accounting officer)	July 16, 2013
* Robert L. Lumpkins	Chairman of the Board of Directors	July 16, 2013
* Phyllis E. Cochran	Director	July 16, 2013
* Nancy E. Cooper	Director	July 16, 2013
* Gregory L. Ebel	Director	July 16, 2013
* William R. Graber	Director	July 16, 2013
* Emery N. Koenig	Director	July 16, 2013
* Harold H. MacKay	Director	July 16, 2013
* William T. Monahan	Director	July 16, 2013
* James L. Popowich	Director	July 16, 2013
* David T. Seaton	Director	July 16, 2013
* Steven M. Seibert	Director	July 16, 2013

*By:
	/s/ Lawrence W. Stranghoener
	Lawrence W. Stranghoener Attorney-in-fact

S-2

Exhibit Index

Exhibit No.	Description	Incorporated Herein by Reference to	Filed with Electronic Submission
2.i.	Agreement and Plan of Merger and Contribution, dated as of January 26, 2004, by and among IMC Global Inc. (now known as Mosaic Global Holdings Inc.), Global Nutrition Solutions, Inc. (now known as MOS Holdings Inc. (“MOS Holdings”)), GNS Acquisition Corp., Cargill, Incorporated (“Cargill”) and Cargill Fertilizer, Inc., as amended by Amendment No. 1 to Agreement and Plan of Merger and Contribution, dated as of June 15, 2004, and as further amended by Amendment No. 2 to Agreement and Plan of Merger and Contribution, dated as of October 18, 2004*	Exhibit 2.1 to the Current Report on Form 8-K of Mosaic dated October 22, 2004, and filed on October 28, 2004**
2.ii.	Letter Agreement dated April 11, 2005, to Agreement and Plan of Merger and Contribution, dated as of January 26, 2004, by and among IMC Global Inc., Global Nutrition Solutions, Inc., Cargill and Cargill Fertilizer, Inc., as amended by Amendment No. 1 to Agreement and Plan of Merger and Contribution, dated as of June 15, 2004, and as further amended by Amendment No. 2 to Agreement and Plan of Merger and Contribution, dated as of October 18, 2004	Exhibit 2 to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period ended February 28, 2005**
2.iii.	Form of Merger and Distribution Agreement, dated January 18, 2011, by and among MOS Holdings Inc., Cargill, The Mosaic Company (“Mosaic,” formerly known as GNS II (U.S.) Corp. (“GNS”), GNS Merger Sub LLC, and, for the limited purposes set forth therein, the Margaret A. Cargill Foundation, the Acorn Trust, the Lilac Trust and the Anne Ray Charitable Trust*	Annex A to the proxy statement/prospectus forming a part of the Registration Statement on Form S-4 filed by GNS pursuant to Rule 424(b)(3) of the Securities Act on April 11, 2011***
2.iv.	Form of Registration Agreement, dated January 18, 2011, by and among MOS Holdings, Cargill, Mosaic, the Margaret A. Cargill Foundation, the Acorn Trust, the Lilac Trust and the Anne Ray Charitable Trust	Annex D to the proxy statement/prospectus forming a part of the Registration Statement on Form S-4 filed by GNS on February 4, 2011***
2.v.	Form of Tax Agreement, dated January 18, 2011, by and among MOS Holdings, Mosaic and Cargill (the “Tax Agreement”)	Annex F to the proxy statement/prospectus forming a part of the Registration Statement on Form S-4 filed by GNS on February 4, 2011***

E-1

Exhibit No.	Description	Incorporated Herein by Reference to	Filed with Electronic Submission
2.vi.	Amendment, dated May 24, 2011, to Tax Agreement	Exhibit 2.1 to the Current Report on Form 8-K12B of Mosaic dated May 24, 2011 and filed on May 25, 2011**
2.vii.	Amended and Restated Governance Agreement, dated as of May 25, 2011, by and among MOS Holdings, Mosaic and each of the other parties thereto	Exhibit 2.2 to the Current Report on Form 8-K12B of Mosaic dated May 24, 2011 and filed on May 25, 2011**
2.viii.	Form of Registration Rights Agreement, dated as of January 18, 2011, among MOS Holdings, Mosaic and Cargill	Annex G to the proxy statement/prospectus forming a part of the Registration Statement on Form S-4 filed by GNS on February 4, 2011***
3.i.a.	Restated Certificate of Incorporation of Mosaic	Exhibit 3.1 to Mosaic’s Form 8-K12B dated May 24, 2011, and filed on May 25, 2011**
3.ii.	Amended and Restated Bylaws of Mosaic, effective July 19, 2012	Exhibit 3.1 to Mosaic’s Current Report on Form 8-K dated July 19, 2012, and filed on July 25, 2012**
4.iii.	Registrant hereby agrees to furnish to the Commission, upon request, with all instruments defining the rights of holders of each issue of long-term debt of the Registrant and its consolidated subsidiaries
10.iii.a.****	The Mosaic Company 2004 Omnibus Stock and Incentive Plan (the “Omnibus Incentive Plan”), as amended October 8, 2009	Appendix A to the Proxy Statement of The Mosaic Company dated August 25, 2009**
10.iii.b.****	Form of Employee Non-Qualified Stock Option under the Omnibus Incentive Plan	Exhibit 10.iii.b. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period Ended November 30, 2004**
10.iii.c.****	Description of Executive Physical Program	Fourth Paragraph of Item 1.01 of the Current Report on Form 8-K of Mosaic dated May 26, 2005, and filed on June 1, 2005**
10.iii.d.****	Description of Mosaic Management Incentive Program		X
10.iii.e.****	Form of Employee Non-Qualified Stock Option under the Omnibus Incentive Plan, effective August 1, 2005	Exhibit 99.1 to the Current Report on Form 8-K of Mosaic dated August 2, 2006, and filed on August 2, 2006**
10.iii.f.****	Summary of Board of Director Compensation of Mosaic	Exhibit 10.iii.f. to the Quarterly Report on Form 10-Q for the Fiscal Quarter Ended August 31, 2011**

E-2

Exhibit No.	Description	Incorporated Herein by Reference to	Filed with Electronic Submission
10.iii.g.****	Form of Employee Non-Qualified Stock Option under the Omnibus Incentive Plan, approved July 6, 2006	Exhibit 99.3. to the Current Report on Form 8-K of Mosaic dated August 2, 2006, and filed on August 2, 2006**
10.iii.h.****	Form of Employee Non-Qualified Stock Option under the Omnibus Incentive Plan, approved July 30, 2008	Exhibit 10.iii.a. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period Ended August 31, 2008**
10.iii.i.****	Form of Employee Restricted Stock Unit Award Agreement under the Omnibus Incentive Plan, approved July 30, 2008	Exhibit 10.iii.b to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period Ended August 31, 2008**
10.iii.j.****	Form of Indemnification Agreement between Mosaic and its directors and executive officers	Exhibit 10.iii. to the Current Report on Form 8-K of Mosaic dated October 8, 2008, and filed on October 14, 2008**
10.iii.k.****	Form of Mosaic Nonqualified Deferred Compensation Plan, as amended and restated effective October 9, 2008	Exhibit 10.iii.b. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period Ended November 30, 2008**
10.iii.l.****	Form of Director Restricted Stock Unit Award Agreement under the Omnibus Incentive Plan, approved October 9, 2008	Exhibit 10.iii.c. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period Ended November 30, 2008**
10.iii.m.****	Description of Executive Financial Planning Program, as amended effective January 1, 2009	Exhibit 10.iii.a. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period Ended February 28, 2009**
10.iii.n.****	Form of Senior Management Severance and Change in Control Agreement	Exhibit 10.78 to Amendment No. 2 to Registration Statement on Form S-1 filed by GNS II (U.S.) Corp. pursuant to Rule 424(b)(3) of the Securities Act on May 12, 2011*****
10.iii.o.****	Form of Amendment dated April 13, 2011, to the Mosaic Nonqualified Deferred Compensation Plan, as amended and restated effective October 9, 2008	Exhibit 10.iii.r. to the Annual Report on Form 10-K of Mosaic for the Fiscal Year Ended May 31, 2011**
10.iii.p.****	Form of Amendment dated May 11, 2011, to the Omnibus Incentive Plan	Exhibit 10.iii.u. to the Annual Report on Form 10-K of Mosaic for the Fiscal Year Ended May 31, 2011**

E-3

Exhibit No.	Description	Incorporated Herein by Reference to	Filed with Electronic Submission
10.iii.q.****	Form of Employee Nonqualified Stock Option under the Omnibus Incentive Plan, approved July 20, 2011	Exhibit 10.iii.b. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period ended August 31, 2011**
10.iii.r.****	Form of Employee Restricted Stock Unit Award Agreement under the Omnibus Incentive Plan, approved July 20, 2011	Exhibit 10.iii.c. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period ended August 31, 2011**
10.iii.s.****	Form of Performance Unit Award Agreement under the Omnibus Incentive Plan, approved August 29, 2011	Exhibit 10.iii.d. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period ended August 31, 2011**
10.iii.t.****	Summary of executive life and disability plans	The material under “Compensation Discussion and Analysis—Compensation Components and Process—Elements of Compensation—Executive Life and Disability Plans” in the Proxy Statement of Mosaic dated August 23, 2012**
10.iii.u.****	Form of Retention Award Agreement under the Omnibus Incentive Plan, approved July 20, 2011	Exhibit 10.iii.g. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period ended August 31, 2011**
10.iii.v.****	Form of Performance Unit Award Agreement under the Omnibus Incentive Plan, approved July 18, 2012	Exhibit 10.iii.a. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period ended August 31, 2012**
10.iii.w.****	Form of Agreement between Cargill and Mosaic relating to certain former Cargill employees' participation in the Cargill International Pension Plan	Exhibit 10.iii.b. to the Quarterly Report on Form 10-Q of Mosaic for the Quarterly Period ended August 31, 2012**
10.iii.x.****	Form of Supplemental Agreement between Mosaic and certain former participants in the Cargill International Pension Plan.		X
21	Subsidiaries of the Registrant		X
23.1	Consent of KPMG LLP, independent registered public accounting firm for Mosaic		X
24	Power of Attorney		X
31.1	Certification of Chief Executive Officer Required by Rule 13a-14(a)		X

E-4

Exhibit No.	Description	Incorporated Herein by Reference to	Filed with Electronic Submission
31.2	Certification of Chief Financial Officer Required by Rule 13a-14(a)		X
32.1	Certification of Chief Executive Officer Required by Rule 13a-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code		X
32.2	Certification of Chief Financial Officer Required by Rule 13a-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code		X
95	Mine Safety Disclosures		X
101	Interactive Data Files		X

* Mosaic agrees to furnish supplementally to the Commission a copy of any omitted schedules and exhibits to the extent required by rules of the Commission upon request.

** SEC File No. 001-32327

*** Registration Statement No. 333-172076

**** Denotes management contract or compensatory plan.

***** Registration Statement No. 333-172253

E-5

Financial Table of Contents

	Page
Management's Discussion and Analysis of Financial Condition and Results of Operations		F-2
Introduction		F-2
Key Factors that can Affect Results of Operations and Financial Condition		F-2
Results of Operations		F-4
Overview		F-4
Phosphates		F-8
Potash		F-11
Other Income Statement Items		F-14
Selling, General and Administrative Expenses		F-14
Other Operating Expenses		F-14
Foreign Currency Transaction Gain (Loss)		F-14
Gain on Sale of Equity Investment		F-15
Other Income (Expense)		F-15
Provision for Income Taxes		F-15
Equity in Earnings (Loss) of Non-Consolidated Companies		F-15
Critical Accounting Estimates		F-16
Liquidity and Capital Resources		F-20
Off-Balance Sheet Arrangements and Obligations		F-22
Market Risk		F-25
Environmental, Health and Safety Matters		F-27
Contingencies		F-35
Related Parties		F-35
Recently Issued Accounting Guidance		F-35
Forward-Looking Statements		F-35
Report of Independent Registered Public Accounting Firm		F-39
Consolidated Statements of Earnings		F-41
Consolidated Comprehensive Income Statements		F-42
Consolidated Balance Sheets		F-43
Consolidated Statements of Cash Flows		F-44
Consolidated Statements of Equity		F-45
Notes to Consolidated Financial Statements		F-46
Quarterly Results (Unaudited)		F-94
Five Year Comparison		F-95
Schedule II—Valuation and Qualifying Accounts		F-97
Management's Report on Internal Control Over Financial Reporting		F-98

F-1

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Introduction

The Mosaic Company (before or after the Cargill Transaction, as defined below, “Mosaic”, and with its consolidated subsidiaries, “we”, “us”, “our”, or the “Company”) is the parent company of the business that was formed through the business combination (“Combination”) of IMC Global Inc. and the Cargill Crop Nutrition fertilizer businesses of Cargill, Incorporated and its subsidiaries (collectively, “Cargill”) on October 22, 2004. On May 25, 2011, we consummated the first in a series of transactions (collectively, the “Cargill Transaction”) intended to result in the split-off (the “Split-off”) and orderly distribution of Cargill’s then approximately 64% ownership in us through a series of public offerings. Further information regarding this transaction is included in Note 2 of our Notes to Consolidated Financial Statements.

We produce and market concentrated phosphate and potash crop nutrients. We conduct our business through wholly and majority owned subsidiaries as well as businesses in which we own less than a majority or a non-controlling interest, including consolidated variable interest entities and investments accounted for by the equity method. We are organized into the following business segments:

Our Phosphates business segment owns and operates mines and production facilities in Florida which produce concentrated phosphate crop nutrients and phosphate-based animal feed ingredients, and processing plants in Louisiana which produce concentrated phosphate crop nutrients. In fiscal 2011, the Phosphates segment acquired a 35% economic interest in a joint venture, which owns a phosphate rock mine (the “Miski Mayo Mine”) in Peru. Our Phosphates segment’s results also include our international distribution activities as well as the consolidated results of Phosphate Chemicals Export Association, Inc. (“PhosChem”), a U.S. Webb-Pomerene Act association of phosphate producers that exports concentrated phosphate crop nutrient products around the world for us and PhosChem’s other member. Our share of PhosChem’s sales volume was approximately 93% for the fiscal year ended May 31, 2013.

Our Potash business segment owns and operates potash mines and production facilities in Canada and the U.S. which produce potash-based crop nutrients, animal feed ingredients and industrial products. Potash sales include domestic and international sales. We are a member of Canpotex, Limited (“Canpotex”), an export association of Canadian potash producers through which we sell our Canadian potash outside of the U.S. and Canada.

Key Factors that can Affect Results of Operations and Financial Condition

Our primary products, phosphate and potash crop nutrients, are, to a large extent, global commodities that are also available from a number of domestic and international competitors, and are sold by negotiated contracts or by reference to published market prices. The most important competitive factor for our products is delivered price. As a result, the markets for our products are highly competitive. Business and economic conditions and governmental policies affecting the agricultural industry and customer sentiment are the most significant factors affecting worldwide demand for crop nutrients. The profitability of our businesses is heavily influenced by worldwide supply and demand for our products, which affects our sales prices and volumes. Our costs per tonne to produce our products are also heavily influenced by significant raw material costs in our Phosphates business and fixed costs associated with owning and operating our major facilities.

World prices for the key raw material inputs for concentrated phosphate products, including ammonia, sulfur and phosphate rock, have an effect on industry-wide phosphate prices and costs. The primary feedstock for producing ammonia is natural gas, and costs for ammonia are generally highly dependent on natural gas prices as well as the supply and demand balance for ammonia. Sulfur is a global commodity that is primarily produced as a co-product of oil refining, where the market price is based primarily on the supply and demand balance for sulfur. We believe our investments in sulfur transportation assets continue to afford us a competitive advantage compared to other North American producers in the cost of and security of supply of sulfur. We produce most of our requirements for phosphate rock through either wholly or partly owned mines.

F-2

Our products are generally sold based on the market prices prevailing at the time the sales contract is signed or through contracts which are priced at the time of shipment based on a formula. Additionally, in certain circumstances the final price of our products is determined after shipment based on the current market at the time the price is agreed to with the customer. Forward sales programs at fixed prices create a lag between prevailing market prices and our average realized selling prices. The mix and parameters of these sales programs vary over time based on our marketing strategy, which considers factors that include among others optimizing our production and operating efficiency with warehouse limitations, as well as customer requirements. The use of forward sales programs and level of customer prepayments may be magnified in periods of changing supply and demand.

Our per tonne selling prices for potash are affected by shifts in the product mix, geography and customer mix. Our Potash business is significantly affected by Canadian resource taxes and royalties that we pay the Province of Saskatchewan to mine and sell our potash products. In addition, cost of goods sold is affected by the level of periodic inflationary pressures on resources, such as labor, processing materials and construction costs, due to the rate of economic growth in western Canada where we produce most of our potash; the operating costs we incur to manage salt saturated brine inflows at our potash mine at Esterhazy, Saskatchewan which are affected by changes in the amount and pattern of the inflows, among other factors; and natural gas costs for operating our potash solution mine at Belle Plaine, Saskatchewan. We also incur capital costs to manage the brine inflows at Esterhazy.

We manage brine inflows at Esterhazy through a number of methods, primarily by reducing or preventing particular sources of brine inflow by locating the point of entry through the use of various technologies, including 3D seismic surveys, injecting calcium chloride into the targeted areas from surface, and grouting targeted areas from underground. We also pump brine out of the mine, which we impound in surface storage areas and dispose of by injecting it below the surface through the use of injection wells. Excess brine is also stored in mined-out areas of the mine, and the level of this stored brine fluctuates either up or down, from time to time, depending on the net inflow or net outflow rate. To date, our brine inflow and remediation efforts have not had a material impact on our production processes or volumes. In recent years, we have been investing in additional capacity and technology to manage the brine inflows. For example, in order to more effectively manage the brine inflow, we have significantly expanded our pumping capacity at Esterhazy in the last several years. In addition, we have also introduced horizontal drilling capabilities to locate points of inflow and inject calcium chloride, and have added additional brine injection capacity at a site that is remote from our current mine workings.

Our results of operations are also affected by changes in currency exchange rates due to our international footprint. The most significant currency impacts are generally from the Canadian dollar and the Brazilian real.

We have expanded production in our Potash segment, in line with our view of the long-term fundamentals of increasing global demand in that business. From the inception of our brownfield expansions, our plans provide for an increase in our annual operational capacity for finished product by approximately five million tonnes. We have deferred construction on approximately two million tonnes of capacity until such time as construction costs moderate and we believe we are able to achieve higher expected returns on our investment.

A discussion of these and other factors that affected our results of operations and financial condition for the periods covered by this Management’s Discussion and Analysis of Financial Condition and Results of Operations is set forth in further detail below. This Management’s Discussion and Analysis of Financial Condition and Results of Operations should also be read in conjunction with the narrative description of our business in Item 1, and the risk factors described in Item 1A, of Part I of this annual report on Form 10-K, and our Consolidated Financial Statements, accompanying notes and other information listed in the accompanying Financial Table of Contents.

Throughout the discussion below, we measure units of production, sales and raw materials in metric tonnes which are the equivalent of 2,205 pounds, unless we specifically state that we mean short or long ton(s) which are the equivalent of 2,000 pounds and 2,240 pounds, respectively. References to a particular fiscal year are to the twelve months ended May 31 of that year. In the following table, there are certain percentages that are not considered to be meaningful and are represented by “NM”.

F-3

Results of Operations

The following table shows the results of operations for the three years ended May 31, 2013, 2012 and 2011:

	Years Ended May 31,									2013-2012						2012-2011
(in millions, except per share data)	2013			2012			2011			Change			Percent			Change			Percent
Net sales	$	9,974.1		$	11,107.8		$	9,937.8		$	(1,133.7	)		(10	%)	$	1,170.0			12	%
Cost of goods sold		7,213.9			8,022.8			6,816.0			(808.9	)		(10	%)		1,206.8			18	%
Gross margin		2,760.2			3,085.0			3,121.8			(324.8	)		(11	%)		(36.8	)		(1	%)
Gross margin percentage		27.7	%		27.8	%		31.4	%
Selling, general and administrative expenses		427.3			410.1			372.5			17.2			4	%		37.6			10	%
Other operating expenses		123.3			63.8			85.1			59.5			93	%		(21.3	)		(25	%)
Operating earnings		2,209.6			2,611.1			2,664.2			(401.5	)		(15	%)		(53.1	)		(2	%)
Interest income (expense), net		18.8			18.7			(5.1	)		0.1			1	%		23.8			N	M
Foreign currency transaction (loss) gain		(15.9	)		16.9			(56.3	)		(32.8	)		(194	%)		73.2			N	M
Gain on sale of equity investment		-			-			685.6			-			-			(685.6	)		N	M
Other income (expense)		2.0			(17.8	)		(17.1	)		19.8			(111	%)		(0.7	)		4	%
Earnings from consolidated companies before income taxes		2,214.5			2,628.9			3,271.3			(414.4	)		(16	%)		(642.4	)		(20	%)
Provision for income taxes		341.0			711.4			752.8			(370.4	)		(52	%)		(41.4	)		(5	%)
Earnings from consolidated companies		1,873.5			1,917.5			2,518.5			(44.0	)		(2	%)		(601.0	)		(24	%)
Equity in net earnings (loss) of nonconsolidated companies		18.3			13.3			(5.0	)		5.0			38	%		18.3			N	M
Net earnings including noncontrolling interests		1,891.8			1,930.8			2,513.5			(39.0	)		(2	%)		(582.7	)		(23	%)
Less: Net earnings (loss) attributable to noncontrolling interests		3.1			0.6			(1.1	)		2.5			N	M		1.7			N	M
Net earnings attributable to Mosaic	$	1,888.7		$	1,930.2		$	2,514.6		$	(41.5	)		(2	%)	$	(584.4	)		(23	%)
Diluted net earnings per share attributable to Mosaic	$	4.42		$	4.42		$	5.62		$	-			-		$	(1.20	)		(21	%)
Diluted weighted average number of shares outstanding		426.9			436.5			447.5

Overview of Fiscal 2013, 2012 and 2011

Net earnings attributable to Mosaic for fiscal 2013 and 2012 were $1.9 billion, or $4.42 per diluted share, and $2.5 billion, or $5.62 per diluted share, for fiscal 2011. Included in fiscal 2013 net earnings is a discrete income tax benefit of approximately $180 million, or $0.42 per diluted share, related to the resolution of certain tax matters and resulting in an overall lower effective tax rate. Fiscal 2011 included a $685.6 million pre-tax gain on the sale of our interest in Vale Fertilizantes S.A. (formerly Fosfertil S.A. or “Fosfertil”), or after tax earnings per share impact of $1.27. The more significant factors that affected our results of operations and financial condition in fiscal 2013, 2012 and 2011 are listed below. These factors are discussed in more detail in the following sections of this Management’s Discussion and Analysis of Financial Condition and Results of Operations.

F-4

Fiscal 2013

In fiscal 2013, average Potash selling prices were lower than the prior year primarily due to cautious customer purchasing behavior leading up to the signing of significant supply contracts with customers in both China and India in the third quarter of fiscal 2013. The impact of lower selling prices was more than offset by higher Potash sales volumes compared to the prior year. North American sales volumes increased in the second half of fiscal 2013 compared to the prior year due primarily due to robust spring demand and continuing strong farmer economics. Our international potash sales through Canpotex also increased in the second half of fiscal 2013 due to an increase in our allocation of annual sales by Canpotex combined with the signing of supply contracts with India and China mentioned above. Additionally, Potash sales volumes in the prior year were constrained by high pipeline inventories and the related impact on buyer sentiment.

Average Phosphates selling prices were lower than the prior year. Phosphate fertilizer prices have remained below those in the prior year due to a market recalibration that occurred in the third quarter of fiscal 2012. Phosphate sales volumes decreased from the prior year due primarily to lack of product availability as a result of entering fiscal 2013 with lower inventory levels and lower shipments to India.

Lower raw material costs, including sulfur, ammonia and phosphate rock, partially offset the decrease in selling prices for our phosphates products. The lower costs for ammonia were the result of internal production of ammonia at our Faustina ammonia facility which was operating at near full capacity in fiscal 2013, but was temporarily shut down during the first half of the prior fiscal year due to an unplanned outage. The lower phosphate rock costs were due to increased production from our South Fort Meade mine in fiscal 2013 compared to the prior year when it operated on a limited basis.

Current weakness in the market has reduced both phosphates and potash prices. However, we continue to believe the crop nutrient market fundamentals remain strong due to the positive long-term global outlook for agriculture, supported by increased demand for grains and oilseeds and modest global grain and oilseed stocks.

Other highlights in fiscal 2013:

• We generated $1.9 billion in cash flows from operations in fiscal 2013, down from the prior year due to an increase in working capital. The positive cash flow in the current year was primarily generated by net earnings. We maintained cash and cash equivalents of $3.7 billion as of May 31, 2013 compared to $3.8 billion as of May 31, 2012.

• Capital expenditures were $1.6 billion in fiscal 2013. We continue to invest in our business through sustaining capital and through the expansion of capacity in our Potash segment, in line with our view of the long-term fundamentals of increasing global demand in that business. From the inception of our brownfield expansions, our plans provide for an increase in our annual operational capacity for finished product by approximately five million tonnes. We have deferred construction on approximately two million tonnes of capacity until such time as construction costs moderate and we believe we are able to achieve higher expected returns on our investment.

• On March 19, 2013, we entered into a Heads of Agreement with Saudi Arabian Mining Company (“Ma’aden”) and Saudi Basic Industries Corporation (“SABIC”) under which the parties intend to enter into a joint venture (the “Northern Promise Joint Venture”) to develop a phosphate rock mine and chemical complexes. The Northern Promise Joint Venture is presently planned to produce phosphate fertilizers, animal feed, food grade purified phosphoric acid and sodium tripolyphosphate in the Kingdom of Saudi Arabia. We expect to own 25% of the joint venture and market approximately 25% of production. When completed, the project is expected to diversify our sources for phosphate production. For further information see Note 9 to our Notes to Consolidated Financial Statements.

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• Beginning with the dividend paid in August 2012, we increased our annual dividend 100% to $1.00 per share, from the level of $0.50 per share announced in February 2012. Dividend payments were $426.6 million in fiscal 2013.

• On December 17, 2012, we announced that we will change our fiscal year end to December 31 from May 31. We will begin reporting quarterly results on a calendar-year basis with the quarter ending September 30, 2013 and report results for a transition period of June 1 to December 31, 2013. Our first full calendar reporting year will be 2014. For purposes of this report, references to a particular fiscal year are to the twelve months ended May 31 of that year. For example, fiscal 2014 refers to the twelve month period ending May 31, 2014.

• We ended our obligation to supply potash from our Esterhazy mine under a tolling agreement (the “Tolling Agreement”) at the end of calendar 2012. Under the Tolling Agreement, we had been delivering up to 1.1 million tonnes of potash per year. In addition, effective December 31, 2012, we received credit for 1.2 million tonnes of potash capacity at our Esterhazy mine for purposes of calculating our allocation of annual sales of potash to Canpotex Limited (“Canpotex”).

• On January 30, 2013, we entered into agreements to settle certain lawsuits against us under federal and state antitrust laws (the “Potash Antitrust Cases”) for an aggregate of $43.8 million. The settlement and related costs resulted in a pre-tax charge of $42 million, or $0.07 per diluted share, in the third quarter of fiscal 2013, and total charges for the year of $51 million, or $0.09 per diluted share, included in other operating expenses.

• Mosaic set a new record for sales of the premium product MicroEssentials^®. MES sales volume increased approximately 28% in the current fiscal year from the prior year.

Fiscal 2012

In fiscal 2012, the average Phosphates and Potash selling prices were higher than fiscal 2011 as a result of stronger farmer economics and increased grain prices, particularly corn. Beginning in fiscal 2011, Phosphate selling prices increased steadily throughout the year and the increases continued through the first half of fiscal 2012. In the second half of fiscal 2012, we saw lower average selling prices due to a market recalibration that occurred in the third quarter. However, in the latter part of fiscal 2012 and early in fiscal 2013 Phosphate selling prices increased but remained below levels of the first half of fiscal 2012. The average Potash selling price increased early in fiscal 2012 and remained within a fairly narrow range for the remainder of the year.

Phosphate sales volumes remained relatively flat from the prior year. Fiscal 2012 started with high phosphate producer inventory levels. The high phosphate producer inventory levels were reduced by the end of fiscal 2012 to low levels as a result of an extended North American spring application period, elevated global demand and modest production curtailments from January thru March 2012. Potash sales volumes decreased when compared to the prior year due to cautious customer purchasing behavior in North America. Potash producer inventory levels were low entering fiscal 2012. These potash producer inventory levels increased throughout fiscal 2012 and ended at relatively high levels.

Higher raw material costs more than offset the benefit from the increase in selling prices for our phosphate products. The higher prices for our key raw materials for concentrated phosphates, primarily sulfur and ammonia, resulted from higher global demand and tighter supply for these raw materials in fiscal 2012 compared to the prior year. In addition, because of the preliminary injunctions relating to the extension of our South Fort Meade, Florida, phosphate rock mine into Hardee County, we increased our use of phosphate rock purchased from third parties in our production of crop nutrients, contributing to increased raw material costs.

On February 21, 2012, we announced that we had entered into a settlement that resolved in their entirety the pending court proceedings over the federal wetlands permit for the extension of our South Fort Meade, Florida, phosphate rock mine into Hardee County and allowed mining at the South Fort Meade mine to proceed. The settlement resulted in a pre-tax charge of approximately $13 million included in other operating expenses. We received final court approval of the settlement on March 28, 2012.

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On October 24, 2011, we completed a $750 million public debt offering consisting of $450 million aggregate principal amount of 3.750% Senior Notes due 2021 and $300 million aggregate principal amount of 4.875% Senior Notes due 2041 (collectively, the “New Senior Notes”). On December 1, 2011, we redeemed the remaining $469.3 million aggregate principal amount of the 7-5/8% Senior Notes due December 2016 (the “7-5/8% Senior Notes”) of our subsidiary, MOS Holdings Inc. We recorded a pre-tax charge of approximately $20 million in other expense, primarily related to the call premium.

On November 17, 2011, we purchased an aggregate 21.3 million shares of our Class A Common Stock, Series A-4 from two former Cargill stockholders (the “MAC Trusts”) that received the shares in the Split-off. The purchase price was $54.58 per share, the closing price for our common Stock on November 16, 2011, resulting in a total purchase price of $1.2 billion.

On September 23, 2011, Standard and Poor’s included us in the S&P 500 index and on September 29, 2011, we completed an underwritten secondary public offering by the MAC Trusts of 20.7 million shares of our Common Stock that the MAC Trusts acquired in the Cargill Transaction.

We generated a fiscal record of $2.7 billion in cash flows from operations in fiscal 2012 and maintained cash and cash equivalents of $3.8 billion as of May 31, 2012.

Fiscal 2011

Our results for fiscal 2011 reflected continued strengthening of phosphate sales prices compared to fiscal 2010 when the recovery in phosphates selling prices was in its early stages. Potash sales volumes increased compared to the prior year due to increasing demand. The crop nutrient market showed significant improvement compared to fiscal 2010 due to the strengthening global outlook for agriculture fundamentals, supported by increased demand for grains and oilseeds in fiscal 2011. Other factors contributing to the strong market dynamics were low producer and pipeline inventories and the impact of improving application rates as farmers made up for lower rates in recent years.

The selling prices for our phosphate products in fiscal 2011 were significantly higher than in fiscal 2010 due to the factors discussed above and the effect on selling prices of high raw material costs.

Higher raw material costs partially offset the benefit from the increase in market prices for our phosphates products. The higher prices for our key raw materials for concentrated phosphates, primarily sulfur and ammonia, resulted from higher global demand for these raw materials in fiscal 2011 compared to fiscal 2010.

In the first quarter of fiscal 2011, we acquired a 35% economic interest in a joint venture that owns the Miski Mayo Mine in the Bayovar region of Peru for approximately $385 million. We also entered into a commercial supply agreement to purchase phosphate rock from the Miski Mayo Mine for volumes proportionate to our economic interest. Phosphate rock production started at the Miski Mayo Mine during the first quarter of fiscal 2011 and shipments began that same quarter.

In the second quarter of fiscal 2011, we completed the sale of our interest in Fosfertil, which resulted in a pre-tax gain of $685.6 million ($569.4 million after tax). The tax impact of this transaction was $116.2 million and is included in our provision for income taxes for the year ended May 31, 2011.

In the fourth quarter of fiscal 2011, we, Cargill and certain Cargill shareholders consummated the first in a series of transactions as part of the Cargill Transaction as discussed further in Note 2 to our Consolidated Financial Statements.

We generated cash flow from operations of $2.4 billion in fiscal 2011 and maintained cash and cash equivalents of $3.9 billion as of May 31, 2011.

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Phosphates Net Sales and Gross Margin

The following table summarizes Phosphates net sales, gross margin, sales volumes and certain other information:

	Years Ended May 31,									2013-2012						2012-2011
(in millions, except price per tonne or unit)	2013			2012			2011			Change			Percent			Change			Percent
Net sales:
North America	$	2,467.9		$	2,553.0		$	2,185.6		$	(85.1	)		(3	%)	$	367.4			17	%
International		4,026.7			5,286.2			4,709.6			(1,259.5	)		(24	%)		576.6			12	%
Total		6,494.6			7,839.2			6,895.2			(1,344.6	)		(17	%)		944.0			14	%
Cost of goods sold		5,332.4			6,372.3			5,241.2			(1,039.9	)		(16	%)		1,131.1			22	%
Gross margin	$	1,162.2		$	1,466.9		$	1,654.0		$	(304.7	)		(21	%)	$	(187.1	)		(11	%)
Gross margin as a percent of net sales		17.9	%		18.7	%		24.0	%
Sales volume (in thousands of metric tonnes)
Crop Nutrients(a):
North America		3,803			3,746			3,441			57			2	%		305			9	%
International		3,126			3,810			4,116			(684	)		(18	%)		(306	)		(7	%)
Crop Nutrient Blends(b)		2,651			2,620			2,636			31			1	%		(16	)		(1	%)
Feed Phosphates		534			621			567			(87	)		(14	%)		54			10	%
Other(c)		1,092			1,039			1,188			53			5	%		(149	)		(13	%)
Total		11,206			11,836			11,948			(630	)		(5	%)		(112	)		(1	%)
Average selling price per tonne:
DAP (FOB plant)	$	512		$	555		$	491		$	(43	)		(8	%)	$	64			13	%
Crop Nutrient Blends (FOB destination)		555			579			475			(24	)		(4	%)		104			22	%
Average price per unit:
Ammonia (metric tonne)(Central Florida)	$	524		$	528		$	407		$	(4	)		(1	%)	$	121			30	%
Sulfur (long ton)		184			223			162			(39	)		(18	%)		61			38	%

^(a)  Excludes tonnes sold by PhosChem for its other member.

^(b)  The average product mix in crop nutrient blends (“Blends”) (by volume) contains approximately 50% phosphate, 25% potash and 25% nitrogen.

^(c)  Other volumes are primarily single superphosphate (“SSP”), potash and urea sold outside of North America.

Fiscal 2013 compared to Fiscal 2012

The Phosphates segment’s net sales decreased to $6.5 billion in fiscal 2013, compared to $7.8 billion in fiscal 2012. The decrease was primarily due to lower sales volumes in the first half of the fiscal year that resulted in a reduction to net sales of approximately $390 million combined with a decrease in sales prices that impacted net sales by approximately $390 million. We consolidate the results of PhosChem. Included in our results for fiscal 2013 are PhosChem net sales and costs for its other member of $92 million compared with $645 million in fiscal 2012.

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Our average DAP selling price was $512 per tonne in fiscal 2013, a decrease of $43 per tonne or 8% compared with fiscal 2012 due to the factors discussed in the Overview. The selling price per tonne of Blends decreased 4% in fiscal 2013 compared with fiscal 2012, reflecting decreases in the price of materials used to produce Blends, primarily phosphates and potash while nitrogen remained flat.

The Phosphates segment’s sales volumes decreased to 11.2 million tonnes in fiscal 2013, compared to 11.8 million tonnes in the same period a year ago. The decline in phosphate sales volumes from the same period in the prior year was due to the factors discussed in the Overview.

Gross margin for the Phosphates segment decreased to $1.2 billion in fiscal 2013 compared with $1.5 billion in fiscal 2012, primarily due to lower average selling prices and sales volume. These factors unfavorably impacted gross margin by approximately $580 million partially offset by lower product costs of approximately $280 million. The lower costs were driven primarily by lower raw materials costs in our North American operations, which include sulfur, ammonia and phosphate rock, of approximately $210 million and lower product costs of approximately $130 million sold by our international distribution locations, including Blends. These lower costs were partially offset by approximately $40 million of increased plant spending. Other factors affecting gross margin and costs are discussed below. As a result of these factors, gross margin as a percentage of net sales decreased to 18% in fiscal 2013 compared to 19% for the same period a year ago.

The average consumed price for ammonia for our North American operations decreased to $524 per tonne in fiscal 2013 from $528 in the same period a year ago. The average consumed price for sulfur for our North American operations decreased to $184 per long ton for fiscal 2013 from $223 in the same period a year ago. The purchase price of these raw materials is driven by global supply and demand. Despite higher market prices for ammonia during the current fiscal year compared to the prior year, we benefitted from the internal production of ammonia at our Faustina facility which was operating at near full capacity in the current fiscal year, but was temporarily shut down during the first half of the prior fiscal year due to an unplanned outage. The average consumed cost of purchased and produced rock decreased to $65 per tonne in fiscal 2013, compared to $73 per tonne in the same period a year ago, primarily due to increased production from our South Fort Meade mine, as discussed below. The percentage of phosphate rock purchased from our Miski Mayo Mine used in finished product production in our North American operations increased to 8% for fiscal 2013 from 7% in the same period a year ago. The percentage of purchased rock from unrelated parties used in phosphate finished product production in our North American operations decreased to 5% in fiscal 2013, from 8% in the same period a year ago.

Costs were also impacted by net unrealized mark-to-market derivative gains of $1.8 million in fiscal 2013, primarily on natural gas derivatives, compared to losses of $3.6 million in fiscal 2012, primarily on freight and natural gas derivatives.

The Phosphates segment’s North American production of crop nutrient dry concentrates and animal feed ingredients was 8.2 million tonnes for fiscal 2013 compared with 8.3 million tonnes in the same period a year ago. Our operating rate for processed phosphate production was consistent at 85% in fiscal 2013 and fiscal 2012. Our phosphate rock production was 15.4 million tonnes for fiscal 2013 compared with 12.1 million tonnes in the same period a year ago. The increase in phosphate rock production in fiscal 2013 was primarily due to the settlement of the lawsuit challenging the federal wetlands permit for extension of our South Fort Meade mine into Hardee County, Florida in the fourth quarter of fiscal 2012 that allowed us to resume normal mining operations at South Fort Meade.

Fiscal 2012 compared to Fiscal 2011

The Phosphates segment’s net sales increased to $7.8 billion in fiscal 2012, compared to $6.9 billion in fiscal 2011. The increase was primarily due to an increase in sales prices that resulted in incremental net sales of approximately $770 million.

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Our average DAP selling price was $555 per tonne in fiscal 2012, an increase of $64 per tonne or 13% compared with fiscal 2011 due to the factors discussed in the Overview. The selling price per tonne of Blends increased 22% in fiscal 2012 compared with fiscal 2011. The increase in Blends pricing was driven by the price increase in all nutrients used to produce Blends, mainly nitrogen and potash. During fiscal 2012, the price of these nutrients increased at a higher rate than phosphate prices.

The Phosphates segment’s sales volumes remained relatively flat at 11.8 million tonnes in fiscal 2012, compared to 11.9 million tonnes in the same period a year ago. Domestic sales volumes increased due to a strong spring season and good farmer economics. The decrease in export sales volumes was due to our focus on growing volumes in North America.

We consolidate the results of PhosChem. Included in our results for fiscal 2012 is PhosChem net sales and costs for its other member of $645 million compared with $507 million in fiscal 2011.

Gross margin for the Phosphates segment decreased to $1.5 billion in fiscal 2012 compared with $1.7 billion in fiscal 2011, primarily due to higher product costs of approximately $990 million partially offset by higher average selling prices which favorably impacted gross margin by approximately $770 million. The higher costs were driven by higher raw materials costs in our North American operations, which include sulfur, ammonia and purchased rock, of approximately $490 million and higher raw materials costs used in the production of our international products, including the nitrogen and potash components of Blends, of approximately $420 million. Other factors affecting gross margin and costs are discussed below. As a result of these factors, gross margin as a percentage of net sales decreased to 19% in fiscal 2012 compared to 24% for the same period a year ago.

The average consumed price for sulfur increased to $223 per long ton in fiscal 2012 from $162 in the same period a year ago. The average consumed price for ammonia increased to $528 per tonne for fiscal 2012 from $407 in the same period a year ago. The increase in the market prices of these raw materials was due to the factors discussed in the Overview. The increase in ammonia costs was also impacted by approximately $60 million due to the temporary shutdown of our Faustina ammonia plant as a result of an outage, partially offset by insurance proceeds related to the outage of approximately $49 million of which $8 million is included in cost of goods sold and $41 million is included in other operating expense. The average consumed price for rock increased to $73 per tonne for fiscal 2012 from $59 in the same period a year ago as a result of the higher use of purchased rock. The percentage of phosphate rock from our Miski Mayo Mine used in finished product production in our North American operation increased from 4% in fiscal 2011 to 7% in fiscal 2012. The percentage of purchased rock from unrelated third parties used in phosphate finished product production in our North American operations increased from 4% in fiscal 2011 to 8% in fiscal 2012 primarily related to the limited production at our South Fort Meade mine in fiscal 2012.

Costs were also impacted by net unrealized mark-to-market derivative losses of $3.6 million in fiscal 2012, primarily on freight and natural gas derivatives, compared to gains of $0.5 million in fiscal 2011, primarily on natural gas derivatives.

The Phosphates segment’s North American production of crop nutrient dry concentrates and animal feed ingredients was 8.3 million tonnes for fiscal 2012 compared with 8.4 million tonnes in the same period a year ago. Our operating rate for processed phosphate production was 85% in fiscal 2012 compared to 87% in fiscal 2011. During the second half of fiscal 2012, we reduced finished phosphate production to help manage our inventory levels. Our phosphate rock production was 12.1 million tonnes for fiscal 2012 compared with 11.5 million tonnes in fiscal 2011. The increase in phosphate rock production rates was primarily due to increased production at our Four Corners, Wingate and Hookers Prairie mines. The South Fort Meade mine, which was producing on a limited basis in fiscal 2012, was temporarily shutdown for most of the first half of fiscal 2011 and subsequently operated at a reduced production level for the remainder of fiscal 2011 due to the preliminary injunctions relating to the extension of the mine into Hardee County as discussed under “Environmental, Health and Safety Matters—Operating Requirements and Impacts—Permitting” below.

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Potash Net Sales and Gross Margin

The following table summarizes Potash net sales, gross margin, sales volumes and certain other information:

	Years Ended May 31,									2013-2012						2012-2011
(in millions, except price per tonne or unit)	2013			2012			2011			Change			Percent			Change			Percent
Net sales:
North America	$	2,108.0		$	1,851.9		$	1,949.7		$	256.1			14	%	$	(97.8	)		(5	%)
International		1,421.3			1,449.4			1,111.3			(28.1	)		(2	%)		338.1			30	%
Total		3,529.3			3,301.3			3,061.0			228.0			7	%		240.3			8	%
Cost of goods sold		1,918.0			1,679.3			1,592.0			238.7			14	%		87.3			5	%
Gross margin	$	1,611.3		$	1,622.0		$	1,469.0		$	(10.7	)		(1	%)	$	153.0			10	%
Gross margin as a percent of net sales		45.7	%		49.1	%		48.0	%
Sales volume (in thousands of metric tonnes)
Crop Nutrients (a):
North America		3,139			2,350			3,263			789			34	%		(913	)		(28	%)
International		3,966			3,666			3,626			300			8	%		40			1	%
Total		7,105			6,016			6,889			1,089			18	%		(873	)		(13	%)
Non-agricultural		666			704			634			(38	)		(5	%)		70			11	%
Total		7,771			6,720			7,523			1,051			16	%		(803	)		(11	%)
Average selling price per tonne (FOB plant):
MOP - North America crop nutrients	$	450		$	515		$	394		$	(65	)		(13	%)	$	121			31	%
MOP - International		349			401			309			(52	)		(13	%)		92			30	%
MOP - Average (b)		405			448			359			(43	)		(10	%)		89			25	%

^(a)  Excludes tonnes related to a third-party tolling arrangement.

^(b)  MOP – Average selling price includes feed and industrial selling prices.

Fiscal 2013 compared to Fiscal 2012

The Potash segment’s net sales increased to $3.5 billion in fiscal 2013 compared with $3.3 billion in fiscal 2012 due to an increase in sales volumes that resulted in higher net sales of approximately $520 million, partially offset by a decrease in sales prices which resulted in lower net sales of approximately $300 million.

The Potash segment’s sales volumes increased to 7.8 million tonnes for fiscal 2013 compared to 6.7 million tonnes in the same period a year ago, primarily driven by the factors described in the Overview.

Our average MOP selling price was $405 per tonne in fiscal 2013, which is a decrease of 10% compared to the prior year average price of $448 per tonne. MOP selling prices, both domestic and international, decreased due to factors discussed in the Overview.

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Gross margin for the Potash segment in fiscal 2013 was comparable to the prior year at $1.6 billion. The gross margin was favorably impacted by approximately $360 million due to the increase in sales volumes, partially offset by a decrease in selling prices which unfavorably impacted gross margin by approximately $300 million. In addition, gross margin was unfavorably impacted by higher costs of approximately $60 million, which are further described in the following paragraphs. The factors affecting gross margin and costs are further discussed below. Gross margin as a percentage of net sales decreased to 46% in fiscal 2013 from 49% in fiscal 2012.

We incurred $301.9 million in depreciation expense during fiscal 2013 compared to $233.1 million in fiscal 2012. The higher depreciation relates to more fixed assets being depreciated as they have been brought into service for our expansion and sustaining projects.

We incurred $450.9 million in labor and contract labor costs during fiscal 2013 compared to $393.7 million in fiscal 2012. The increase in labor and contract labor costs primarily related to the effects of the settlement of collective bargaining agreements and additional headcount to support our expansion projects.

We incurred $249.9 million in Canadian resource taxes in fiscal 2013 compared with $257.9 million in fiscal 2012. The lower taxes were due primarily to lower selling prices in fiscal 2013. The potash expansions resulted in a reduction to our Canadian resource taxes of approximately $162 million and $185 million for fiscal 2013 and 2012, respectively. We incurred $58.0 million in royalties in fiscal 2013 compared to $69.2 million in fiscal 2012. The decrease in royalties was due primarily to lower selling prices in fiscal 2013.

Costs were impacted by net unrealized mark-to-market derivative gains, primarily on natural gas derivatives, of $13.3 million in fiscal 2013 compared with losses, primarily on foreign currency and natural gas derivatives, of $38.3 million in fiscal 2012.

We incurred $235.5 million in expenses, including depreciation on brine assets, and $131.5 million in capital expenditures related to managing the brine inflows at our Esterhazy mine during fiscal 2013, compared to $205.0 million and $44.4 million, respectively, in fiscal 2012. We have been effectively managing the brine inflows at Esterhazy since 1985, and from time to time we experience changes to the amounts and patterns of brine inflows. During the current fiscal year, inflows continued to be higher than average but are still estimated to be within the range of our historical experience. Brine inflow costs, beginning in the third quarter of fiscal 2013, included the costs for pumping brine from the mine to a new brine injection site that is remote from our current mine workings. This new remote injection site, which commenced operations in December 2012, enhances our flexibility for disposing of brine that has been pumped out of the mine and, together with increased pumping capacity, is helping us alleviate the effects of constraints on our pumping that began in the latter half of fiscal 2012. These constraints affected available storage capacity in surface ponds and were primarily due to abnormal rainfall in Saskatchewan as well as the downtime of certain of our brine injection wells. The amount of brine stored in the mined out areas at Esterhazy had reached a level higher than past experience as a result of the factors described above, but has not impeded mining. In general, higher levels of brine stored in the mine result in less time available to mitigate new or increased inflows that exceed our capacity for pumping or disposal of brine outside the mine and less time to avoid flooding and/or loss of the mine. As a result of our investments in the new remote injection and increased pumping capacities, however, we have begun to reduce the amount of brine stored in the mine. Brine inflow costs also continue to reflect the cost of addressing changing inflow patterns and inflows from below our mine workings, which can be more complex and costly to manage, as well as higher costs associated with the introduction of horizontal drilling beginning in the second quarter of fiscal 2012. Under a tolling agreement that expired during the third quarter of fiscal 2013, we were entitled to reimbursement of a pro-rata share of operating and capital costs of our Esterhazy mine, including a portion of our costs for managing the brine inflows.

For fiscal 2013, potash production was 7.8 million tonnes compared to 7.4 million tonnes in fiscal 2012. We curtailed production in the second half of fiscal 2012 due to lower market demand as a result of cautious customer purchasing behavior. Our operating rate for potash production was 79% in fiscal 2013 compared to

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81% in fiscal 2012 due to higher capacity in fiscal 2013. We are curtailing production at our Colonsay mine, and may also curtail production at other Potash mines, if required to match production volumes to market demand.

Fiscal 2012 compared to Fiscal 2011

The Potash segment’s net sales increased to $3.3 billion in fiscal 2012 compared with $3.1 billion in fiscal 2011 primarily due to an increase in sales prices that resulted in an increase in net sales of approximately $620 million, partially offset by lower sales volumes which resulted in lower sales of approximately $380 million.

The Potash segment’s sales volumes decreased to 6.7 million tonnes for fiscal 2012 compared to 7.5 million tonnes in the same period a year ago due to cautious customer purchasing behavior in North America.

Our average MOP selling price was $448 per tonne in fiscal 2012, which is an increase of 25% compared to the prior year average price of $359 per tonne. MOP selling prices, both domestic and international, increased as a result of stronger farmer economics and increased grain prices, particularly corn, in fiscal 2012.

Gross margin for the Potash segment increased to $1.6 billion in fiscal 2012 compared to $1.5 billion in fiscal 2011. The gross margin was favorably impacted by approximately $620 million due primarily to the increase in sales prices, partially offset by a decrease in sales volume which unfavorably impacted gross margin by approximately $250 million. In addition, gross margin was unfavorably impacted by higher costs of approximately $220 million, which are further described in the following paragraphs. The factors affecting gross margin and costs are further discussed below. Gross margin as a percentage of net sales increased to 49% in fiscal 2012 from 48% in fiscal 2011.

We incurred $233.1 million in depreciation expense during fiscal 2012 compared to $188.9 million in fiscal 2011. The higher depreciation relates to more fixed assets being depreciated as they have been brought into service primarily for our expansion and sustaining projects.

We incurred $393.7 million in labor and contract labor costs during fiscal 2012 compared to $345.6 million in fiscal 2011. The increase in labor and contract labor costs primarily related to additional headcount and payroll related costs to support our expansions.

We incurred $257.9 million in Canadian resource taxes in fiscal 2012 compared with $243.7 million in fiscal 2011. The higher taxes were due primarily to increasing selling prices in fiscal 2012. The potash expansions resulted in a reduction to our Canadian resource taxes and royalties of approximately $185 million and $233 million for fiscal 2012 and 2011, respectively. We incurred $69.2 million in royalties in fiscal 2012 compared to $50.5 million in fiscal 2011. The increase in royalties was due primarily to higher sales in fiscal 2012.

Costs were impacted by net unrealized mark-to-market derivative losses, primarily on foreign currency and natural gas derivatives, of $38.3 million in fiscal 2012 compared with gains, primarily on foreign currency derivatives, of $12.5 million in fiscal 2011.

We incurred $205.0 million in expenses, including depreciation, and $44.4 million in capital expenditures related to managing the brine inflows at our Esterhazy mine during fiscal 2012, compared to $151.9 million and $37.4 million, respectively, in fiscal 2011. During the last half of fiscal 2012, net inflows were higher than average but still estimated to be within our historical experience. Our pumping of brine from the mine was constrained beginning in the latter half of fiscal 2012 because of less available storage capacity than normal in surface ponds primarily due to abnormal rainfall in Saskatchewan and the downtime of certain brine injection wells. The results for fiscal 2012 include the higher costs of addressing brine inflow costs, which continued to reflect the cost of addressing changing inflow patterns and inflows from below our mine workings, which can be more complex and costly to manage, as well as higher costs associated with the introduction of horizontal drilling beginning in the second quarter of fiscal 2012. Under a tolling agreement that expired during the third quarter of fiscal 2013, we were entitled to reimbursement of a pro-rata share of operating and capital costs of our Esterhazy mine, including a portion of our costs for managing the brine inflows.

F-13

For fiscal 2012, potash production was 7.4 million tonnes compared to 7.3 million tonnes in fiscal 2011. We increased our production rates beginning in fiscal 2011 continuing through the first half of fiscal 2012 to meet increasing demand; however, we curtailed production in the second half of the year due to lower market demand as a result of cautious customer purchasing behavior. Our operating rate for potash production was 81% in fiscal 2012 compared to 80% in fiscal 2011.

Other Income Statement Items

	Years ended May 31,									2013-2012						2012-2011
(in millions)	2013			2012			2011			Change			Percent			Change			Percent
Selling, general and administrative expenses	$	427.3		$	410.1		$	372.5		$	$17.2			4	%	$	$37.6			10	%
Other operating expenses		123.3			63.8			85.1			59.5			93	%		(21.3	)		(25	%)
Interest (expense)		-			(1.4	)		(27.6	)		1.4			(100	%)		26.2			(95	%)
Interest income		18.8			20.1			22.5			(1.3	)		(6	%)		(2.4	)		(11	%)
Interest income (expense), net		18.8			18.7			(5.1	)		0.1			1	%		23.8			N	M
Foreign currency transaction (loss) gain		(15.9	)		16.9			(56.3	)		(32.8	)		(194	%)		73.2			N	M
Gain on sale of equity investment		-			-			685.6			-			-			(685.6	)		N	M
Other income (expense)		2.0			(17.8	)		(17.1	)		19.8			(111	%)		(0.7	)		4	%
Provision for income taxes		341.0			711.4			752.8			(370.4	)		(52	%)		(41.4	)		(5	%)
Equity in net earnings (loss) of nonconsolidated companies		18.3			13.3			(5.0	)		5.0			38	%		18.3			N	M

Selling, General and Administrative Expenses

Selling, general and administrative expenses increased to $427.3 million in fiscal 2013 compared to $410.1 million in fiscal 2012 due to an increase in salaries, incentives, and other employee benefits combined with an increase in project costs related to strategic and operational improvement initiatives. Selling, general and administrative expenses increased to $410.1 million in fiscal 2012 compared to $372.5 million in fiscal 2011 primarily as a result of an increase in salaries and benefits combined with an increase in costs associated with operational improvement initiatives, primarily related to information technology enhancements.

Other Operating Expenses

Other operating expenses were $123.3 million in fiscal 2013 compared to $63.8 million in fiscal 2012. Other operating expenses typically consist of three major categories: 1) Asset Retirement Obligations (“AROs”)/environmental and legal reserves, 2) insurance reimbursements and 3) gain/loss on fixed assets. The increase in fiscal 2013 is primarily due to the settlement of the Potash Antitrust Cases. The settlement and related costs resulted in a pre-tax charge of approximately $51 million.

Other operating expenses were $63.8 million in fiscal 2012 compared to $85.1 million in fiscal 2011. The decrease in fiscal 2012 primarily relates to a $17.0 million write-off of assets in fiscal 2011 at our Louisiana ammonia facility in our Phosphates segment.

Foreign Currency Transaction Gain (Loss)

In fiscal 2013, we recorded a foreign currency transaction loss of $15.9 million, compared to a gain of $16.9 million in fiscal 2012. The foreign currency transaction loss in fiscal 2013 was primarily the result of the strengthening of the U.S. dollar relative to the Brazilian Real on significant U.S. dollar denominated payables held by our Brazilian subsidiaries.

F-14

In fiscal 2012, we recorded a foreign currency transaction gain of $16.9 million, compared to a loss of $56.3 million in fiscal 2011. The foreign currency transaction gain in fiscal 2012 was primarily the result of the strengthening of the U.S. dollar relative to the Canadian dollar on significant U.S. dollar denominated intercompany receivables and cash held by certain of our Canadian subsidiaries, partially offset by the effect of the strengthening of the U.S. dollar relative to the Brazilian Real on significant U.S. dollar denominated payables held by our Brazilian subsidiaries.

Gain on Sale of Equity Investment

In fiscal 2011, we recorded a $685.6 million pre-tax gain on the sale of our equity method investment in Fosfertil. The tax impact of this transaction was $116.2 million which is included in our provision for income taxes for fiscal 2011. For further discussion see Note 9 of our Notes to Consolidated Financial Statements.

Other Income (Expense)

For fiscal 2012, we recorded a charge of approximately $20 million for the call premium related to the redemption of the remaining $469.3 million aggregate principal amount of our 7-5/8% Senior Notes due December 2016.

For fiscal 2011, we recorded a charge of approximately $19 million for the call premium and write-off of unamortized fees related to the redemption of the remaining $455.4 million aggregate principal amount of our 7-3/8% senior notes due December 2014.

Provision for Income Taxes

Years Ended May 31,	Effective Tax Rate			Provision for Income Taxes
2013		15.4	%	$	341.0
2012		27.1	%		711.4
2011		23.0	%		752.8

Our income tax rate is impacted by the mix of earnings across the jurisdictions in which we operate and by a benefit associated with depletion. Income tax expense for fiscal 2013 was $341.0 million, an effective tax rate of 15.4% on pre-tax income of $2.2 billion. The tax rate was impacted by a discrete income tax benefit of approximately $180 million related to the resolution of certain tax matters.

Income tax expense for fiscal 2012 was $711.4 million, an effective tax rate of 27.1% on pre-tax income of $2.6 billion.

Income tax expense for fiscal 2011 was $752.8 million, an effective tax rate of 23.0% on pre-tax income of $3.3 billion. The tax rate was impacted by a $116.2 million expense related to the $685.6 million gain on the sale of our interest in Fosfertil.

Equity in Net Earnings (Loss) of Non-Consolidated Companies

Equity in net earnings of non-consolidated companies was a gain of $18.3 million in fiscal 2013 and $13.3 million in fiscal 2012. These gains were driven primarily by higher production and profitability levels of the Miski Mayo Mine.

Equity in net earnings of non-consolidated companies was a loss of $5.0 million in fiscal 2011. Our fiscal 2011 loss was driven primarily by our investment in the Miski Mayo Mine which was in the startup stage in fiscal 2011.

F-15

Critical Accounting Estimates

We prepare our Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America which requires us to make various judgments, estimates and assumptions that could have a significant impact on our reported results and disclosures. We base these estimates on historical experience and other assumptions believed to be reasonable at the time we prepare our financial statements. Changes in these estimates could have a material effect on our Consolidated Financial Statements.

Our significant accounting policies can be found in Note 3 of our Notes to Consolidated Financial Statements. We believe the following accounting policies include a higher degree of judgment and complexity in their application and are most critical to aid in fully understanding and evaluating our reported financial condition and results of operations.

Recoverability of Long-Lived Assets including Goodwill

Assessing the potential impairment of long-lived assets is an integral part of our normal ongoing review of operations. These assessments involve estimates that require significant management judgment, and include inherent uncertainties that are often interdependent and do not change in isolation. Factors that management must estimate include, among others, industry and market conditions, the economic life of the asset, sales volume and prices, inflation, raw materials costs, cost of capital, tax rates and capital spending. These factors are even more difficult to predict when global financial markets are highly volatile. Further, our Company faces many uncertainties and risks related to various economic, political and regulatory environments in the countries in which we operate. Refer to “Item 1A. Risk Factors” in Part I of this annual report on Form 10-K.

As mentioned above, these factors do not change in isolation; therefore, it is not practicable to present the impact of changing a single factor. If management uses different assumptions or if different conditions occur in future periods, future impairment charges could result and could be material. Impairments generally would be non-cash charges. During the current fiscal year, no material impairment was indicated.

The carrying value of goodwill in our business segments, which are also our reporting units, is tested annually for possible impairment during the second quarter of each fiscal year. We typically use an income approach valuation model, representing present value of future cash flows, to determine the fair value of a reporting unit. Growth rates for sales and profits are determined using inputs from our annual long-range planning process. The rates used to discount projected future cash flows reflect a weighted average cost of capital based on the Company’s industry, capital structure and risk premiums including those reflected in the current market capitalization. When preparing these estimates, management considers each reporting unit’s historical results, current operating trends, and specific plans in place. These estimates are impacted by various factors including inflation, the general health of the economy and market competition. In addition, events and circumstances that might be indicators of possible impairment are assessed during other interim periods. No goodwill impairment was indicated in the current fiscal year. See Note 10 of our Notes to Consolidated Financial Statements for additional information regarding goodwill. As of May 31, 2013 we had $1.8 billion of goodwill.

Useful Lives of Depreciable Assets and Rates of Depletion

We estimate initial useful lives of property, plant and equipment based on operational experience, current technology, improvements made to the assets, and anticipated business plans. Factors affecting the fair value of our assets, as noted above, may also affect the estimated useful lives of our assets and these factors can change. Therefore, we periodically review the estimated remaining useful lives of our facilities and other significant assets and adjust our depreciation rates prospectively where appropriate.

Depletion expenses for mining operations, including mineral reserves, are generally determined using the units-of-production method based on estimates of recoverable reserves. These estimates may change based on new information regarding the extent or quality of mineral reserves, permitting or changes in mining strategies.

F-16

Inventories

We review our inventory carrying amounts quarterly to determine if they exceed their estimated net realizable value. Forecasted selling prices are a significant component in determining estimated net realizable value. As described in our significant accounting policies, there are a number of demand and supply variables that can impact forecasted selling prices. Additionally, judgment is involved in this analysis with estimating whether inventories will be sold as blends or other products and the expected effects on costs. These factors do not change in isolation, and therefore, it is not practicable to present the impact of changing a single factor.

Although we believe our judgments and estimates are reasonable, results could differ materially if actual selling prices differ significantly from forecasted selling prices or if expected costs change significantly through the ultimate sale of inventory. Charges for lower of cost or market adjustments, if any, are recognized in our Consolidated Statements of Earnings in the period when there is evidence of a decline of market value below cost. During fiscal 2013, 2012 or 2011 no lower of cost or market inventory write-downs were indicated.

We allocate fixed expense to the costs of production based on normal capacity, which refers to a range of production levels and is considered the production expected to be achieved over a number of periods or seasons under normal circumstances, taking into account the loss of capacity resulting from planned maintenance. Fixed overhead costs allocated to each unit of production should not increase due to abnormally low production. Those excess costs are recognized as a current period expense. When a production facility is completely shut down temporarily, it is considered “idle”, and all related expenses are charged to cost of goods sold.

Environmental Liabilities and Asset Retirement Obligations

We record accrued liabilities for various environmental and reclamation matters including the demolition of former operating facilities, and AROs.

Contingent environmental liabilities are described in Note 21 of our Notes to Consolidated Financial Statements. Accruals for environmental matters are based primarily on third-party estimates for the cost of remediation at previously operated sites and estimates of legal costs for ongoing environmental litigation. We regularly assess the likelihood of material adverse judgments or outcomes as well as potential ranges or probability of losses. We determine the amount of accruals required, if any, for contingencies after carefully analyzing each individual matter. Actual costs incurred in future periods may vary from the estimates, given the inherent uncertainties in evaluating environmental exposures. As of May 31, 2013 and 2012, we had accrued $24.7 million and $27.3 million, respectively, for environmental matters.

As indicated in Note 14 of our Notes to Consolidated Financial Statements, we recognize AROs in the period in which we have an existing legal obligation, and the amount of the liability can be reasonably estimated. We utilize internal engineering experts as well as third-party consultants to assist management in determining the costs of retiring certain of our long-term operating assets. Assumptions and estimates reflect our historical experience and our best judgments regarding future expenditures. The assumed costs are inflated based on an estimated inflation factor and discounted based on a credit-adjusted risk-free rate. For active facilities, fluctuations in the estimated costs (including those resulting from a change in environmental regulations), inflation rates and discount rates can have a significant impact on the corresponding assets and liabilities recorded in the Consolidated Balance Sheets. However, changes in the assumptions for our active facilities would not have a significant impact on the Consolidated Statements of Earnings in the year they are identified. For closed facilities, fluctuations in the estimated costs, inflation and discount rates have an impact on the Consolidated Statements of Earnings in the year they are identified as there is no asset related to these items. Phosphate land reclamation activities generally occur concurrently with mining operations; as such, we accrue and expense reclamation costs as we mine. As of May 31, 2013 and 2012, $658.5 million and $600.3 million, respectively, was accrued for AROs.

F-17

Pension Plans and Other Postretirement Benefits

The accounting for benefit plans is highly dependent on valuation of pension assets and actuarial estimates and assumptions.

We have investments that require the use of management estimates to determine their valuation. These estimates include third-party comparables, net asset value as determined by fund managers, or other internal estimates. However, we believe that our defined benefit pension plans are well diversified with an asset allocation policy that provides the pension plans with the appropriate balance of investment return and volatility risk given the funded nature of the plans, our present and future liability characteristics and our long-term investment horizon. The primary investment objective is to provide that adequate assets are available to meet future liabilities. To accomplish this, we monitor and manage the assets of the plans to better insulate the portfolio from changes in interest rates that impact the assets and liabilities.

The assumptions and actuarial estimates required to estimate the employee benefit obligations for pension plans and other postretirement benefits include discount rate, expected salary increases, certain employee-related factors, such as turnover, retirement age and mortality (life expectancy), expected return on assets and healthcare cost trend rates. We evaluate these critical assumptions at least annually. Our assumptions reflect our historical experiences and our best judgments regarding future expectations that have been deemed reasonable by management.

The judgments made in determining the costs of our benefit plans can impact our Consolidated Statements of Earnings. As a result, we use actuarial consultants to assist management in developing reasonable assumptions and cost estimates. Actual results in any given year will often differ from actuarial assumptions because of economic and other factors. The effects of actual results differing from our assumptions are included as a component of other comprehensive income/(expense) as unamortized net gains and losses, which are amortized into earnings over future periods. As of May 31, 2013 and 2012, we had $147.1 million and $149.0 million, respectively, accrued for pension and other postretirement benefit obligations. Our pension and other postretirement benefits are further described in Note 18 of our Notes to Consolidated Financial Statements.

Income Taxes

Due to Mosaic’s global operations, we assess uncertainties and judgments in the application of complex tax regulations in a multitude of jurisdictions. Future changes in judgment related to the expected ultimate resolution of uncertain tax positions will affect earnings in the quarter of such change. While it is often difficult to predict the final outcome or the timing of resolution of any particular uncertain tax position, our liabilities for income taxes reflect what we believe to be the more likely than not outcome. We adjust these liabilities, as well as the related interest, in light of changing facts and circumstances including negotiations with taxing authorities in various jurisdictions, outcomes of tax litigation, and resolution of disputes arising from tax audits in the normal course of business. Settlement of any particular position may require the use of cash. Based upon an analysis of tax positions taken on prior year returns and expected positions to be taken on the current year return, management has identified gross uncertain income tax positions of $316.8 million as of May 31, 2013. It is reasonably possible that changes to the Company’s unrecognized tax benefits could be significant; however, due to the uncertainty of possible outcomes, a current estimate of the range of changes that may occur cannot be made.

A valuation allowance is provided for deferred tax assets for which it is more likely than not that the related tax benefits will not be realized. Significant judgment is required in evaluating the need for and magnitude of appropriate valuation allowances. The realization of the Company’s deferred tax assets is dependent on generating certain types of future taxable income, using both historical and projected future operating results, the reversal of existing taxable temporary differences, taxable income in prior carry-back years (if permitted) and the availability of tax planning strategies. As of May 31, 2013 and 2012, we had a valuation allowance of $93.6 million and $180.2 million, respectively. Changes in tax laws, assumptions with respect to future taxable income, tax planning strategies, and foreign currency exchange rates could result in adjustment to these allowances.

F-18

We have not recorded U.S. deferred income taxes on certain of our non-U.S. subsidiaries’ undistributed earnings as such amounts are intended to be reinvested outside the United States indefinitely. However, should we change our business and tax strategies in the future and decide to repatriate a portion of these earnings to one of our U.S. subsidiaries, including cash maintained by these non-U.S. subsidiaries, additional U.S. tax liabilities would be incurred. It is not practicable to estimate the amount of additional U.S. tax liabilities we would incur.

We have included a further discussion of income taxes in Note 13 of our Notes to Consolidated Financial Statements.

Canadian Resource Taxes and Royalties

We pay Canadian resource taxes consisting of the Potash Production Tax and resource surcharge. The Potash Production Tax is a Saskatchewan provincial tax on potash production and consists of a base payment and a profits tax. We also pay a percentage of the value of resource sales from our Saskatchewan mines. In addition to the Canadian resource taxes, royalties are payable to the mineral owners with respect to the majority of potash reserves or production of potash. These resource taxes and royalties are recorded in cost of goods sold in our Consolidated Statements of Earnings. Our Canadian resource taxes and royalties expenses were $307.9 million, $327.1 million and $294.2 million for fiscal 2013, 2012 and 2011, respectively. As of May 31, 2013 and 2012, our Canadian resource taxes and royalties accruals were $62.2 million and $63.4 million, respectively, in our Consolidated Balance Sheets.

The profits tax is the most significant part of the Potash Production Tax and is calculated on the potash content of each tonne sold (“K₂O tonne”) from each Saskatchewan mine. The Potash Production Tax is calculated on a calendar year basis; accordingly, the total expense for fiscal 2013 is based in part on forecasted profit per K₂O tonne for calendar 2013, which includes estimates of selling prices and volumes for the remainder of the calendar year. In calculating profit per K₂O tonne for profits tax purposes, we deduct, among other operating expenses, a depreciation allowance with a majority of the depreciation allowance in calendar 2013 at a 120% rate of the capital expenditures made during the year. Therefore, the capital expenditures related to the potash mine expansions forecasted for calendar 2013 will significantly reduce the calculated profit per K₂O tonne and the resulting profit tax accrued as of May 31, 2013. This impact is expected to continue until our potash mine expansions are complete. The potash expansions resulted in a reduction to our Canadian resource taxes of approximately $162 million and $185 million for fiscal 2013 and 2012, respectively.

If differing assumptions and estimates had been used in the current period, including assumptions regarding future potash selling prices and sales volumes and forecasted capital expenditures, the accruals for Canadian resource taxes and royalties could have changed. These factors do not change in isolation; and therefore, it is not practicable to present the impact of changing a single factor.

Litigation

Our operating results are affected by claims and judicial or administrative proceedings involving the Company, many of which are incidental to the ordinary operation of the business, as described in Note 21 of our Notes to Consolidated Financial Statements. We record accruals for such claims and proceedings when information available to us indicates it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. These accruals are established as part of an ongoing assessment that takes into consideration such items as advice of legal counsel, developments in individual claims and proceedings, changes in the law, changes in business focus, changes in the litigation environment, changes in opponent strategy and tactics, ongoing discovery, and past experience in defending and settling similar claims. Adjustments to accruals, recorded as needed in our Consolidated Statement of Earnings each quarter, are made to reflect changes in and current status of these factors. While we have established what we currently believe are adequate accruals for pending legal matters, these accruals frequently involve estimates based upon the current judgment of management and others and the final outcome or potential settlement of litigation or other claims could differ materially from the recorded amounts.

F-19

Liquidity and Capital Resources

We define liquidity as the ability to generate adequate amounts of cash to meet current cash needs. We assess our liquidity in terms of our ability to fund working capital requirements, fund sustaining and expansion projects, pursue strategic opportunities and capital management decisions which include making payments on and issuing indebtedness and distributions to our shareholders, either in the form of share repurchases or dividend policies. Our liquidity, to a certain extent, is subject to general economic, financial, competitive and other factors that are beyond our control.

We recently reviewed our capital management philosophy. Our philosophy is founded on the principals of maintaining a solid, sustainable financial foundation that will allow us to take advantage of strategic opportunities, while improving the efficiency of our balance sheet. We expect to lower our weighted average cost of capital and provide for the ability to return capital to shareholders over time. As we previously announced, we plan to maintain a liquidity buffer of $2.25 billion, comprised of approximately one third cash and two thirds committed credit lines. In addition, we expect to increase our long-term debt levels in anticipation of a potential share repurchase. Subsequent to May 31, 2013 we entered into five forward-starting interest rate swaps in anticipation of the future issuance of debt. The total notional value of these swaps is $900 million, with $650 million related to ten year term debt and $250 million related to thirty year term debt. These swap contracts will be settled in November 2013, or upon the earlier issuance of debt.

We have significant liquidity and capital resources as of May 31, 2013 with approximately $3.7 billion in cash and cash equivalents, $13.4 billion of Mosaic stockholders’ equity, $1.0 billion in long-term debt (less current maturities of $0.9 million) and $68.7 million in short-term debt. Maturities of long-term debt within the next five years are $10.0 million.

All of our cash and cash equivalents are diversified in highly rated investment vehicles. Approximately $2.1 billion of cash and cash equivalents are held by non-U.S. subsidiaries and are not subject to significant foreign currency exposures as the majority are held in investments denominated in U.S. dollars, as of May 31, 2013. These funds may create foreign currency transaction gains or losses, however, depending on the functional currency of the entity holding the cash. In addition, there are no significant restrictions that would preclude us from bringing these funds back to the U.S.; however, there would be an income tax expense impact on remitting approximately $0.9 billion of cash associated with certain undistributed earnings, which are part of the permanently reinvested earnings discussed in Note 13 of our Notes to Consolidated Financial Statements. However, we currently intend to use a portion of this cash for non-U.S. expansions. Also, an unfavorable resolution of uncertain tax positions could affect the amount of cash held in the U.S. Information about the investment of our cash and cash equivalents is included in Note 3 of our Notes to Consolidated Financial Statements.

Cash Requirements

We have certain contractual cash obligations that require us to make payments on a scheduled basis which include, among other things, long-term debt payments, interest payments, operating leases, unconditional purchase obligations, and funding requirements of pension and postretirement obligations. Unconditional purchase obligations are our largest contractual cash obligations. These include obligations for capital expenditures related to our expansion projects, contracts to purchase raw materials such as sulfur, ammonia, rock and natural gas, obligations to purchase raw materials for our international distribution activities and equity contributions for nonconsolidated investments. Other large cash obligations are our AROs and other environmental obligations primarily related to our Phosphates segment and our long-term debt. Our long-term debt has maturities ranging from one year to 30 years. We expect to fund our AROs, purchase obligations, and capital expenditures with a combination of operating cash flows, cash and cash equivalents, and borrowings. See Off-Balance Sheet Arrangements and Obligations for the amounts owed by Mosaic under Contractual Cash Obligations below and the discussion under “EPA RCRA Initiative” in Note 21 of our Notes to Consolidated Financial Statements for more information on this matter.

F-20

Sources and Uses of Cash

The following table represents a comparison of the net cash provided by operating activities, net cash used in investing activities, and net cash used in financing activities for fiscal 2013, 2012 and 2011:

	Years ended May 31,
(in millions) Cash Flow										2013-2012						2012-2011
	2013			2012			2011			Change			Percent			Change			Percent
Net cash provided by operating activities	$	1,887.5		$	2,705.8		$	2,426.7		$	(818.3	)		(30	%)	$	279.1			12	%
Net cash used in investing activities		(1,589.8	)		(1,627.4	)		(572.1	)		37.6			2	%		(1,055.3	)		(184	%)
Net cash used in financing activities		(397.8	)		(1,061.1	)		(585.0	)		663.3			63	%		(476.1	)		(81	%)

As of May 31, 2013, we had cash and cash equivalents of $3.7 billion. Funds generated by operating activities, available cash and cash equivalents and our credit facilities continue to be our most significant sources of liquidity. We believe funds generated from the expected results of operations, available cash and cash equivalents and borrowings will be sufficient to meet our operating needs and finance anticipated expansion plans and strategic initiatives in the transition period ending December 31, 2013 and calendar 2014. In addition, as of May 31, 2013, approximately $740 million was available under our credit facility for additional working capital needs and investment opportunities. There can be no assurance, however, that we will continue to generate cash flows at or above current levels.

Operating Activities

Net cash flow from operating activities has provided us with a significant source of liquidity. For fiscal 2013, net cash provided by operations was $1.9 billion, compared to $2.7 billion in fiscal 2012. During fiscal 2013, operating cash flow was primarily generated by net earnings, partially offset by the effect of changes in working capital, including an increase in accounts receivable and higher inventory levels. The increase in accounts receivable was the result of higher sales in May 2013 compared with May 2012 sales. Higher inventories were due to building phosphate rock inventory in fiscal 2013 and ending the prior year with low finished goods inventory.

Operating activities provided $2.7 billion and $2.4 billion of cash for fiscal 2012 and 2011, respectively, primarily driven by net earnings.

Investing Activities

Net cash used in investing activities for fiscal 2013 was comparable to fiscal 2012 at $1.6 billion. Capital expenditures decreased slightly in fiscal 2013 primarily related to our expansion projects in our Potash segment. Capital expenditures related to our Potash expansion and sustaining projects were $487.7 million and $463.6 million, respectively, in fiscal 2013.

Investing activities used $1.6 billion of cash for fiscal 2012, an increase of $1.1 billion compared to fiscal 2011. The increase in cash used in investing activities was primarily due to $1.0 billion in proceeds from the sale of our investment in Fosfertil in fiscal 2011, partially offset by our investment in our equity interest in the Miski Mayo Mine of approximately $385 million in fiscal 2011 and an increase in capital expenditures primarily related to our expansion projects in our Potash segment. Capital expenditures related to our expansion projects were $839.4 million in fiscal 2012.

Information about our prospective investment in the Northern Promise Joint Venture is included in Note 9 of our Notes to Consolidated Financial Statements.

F-21

Financing Activities

Net cash used in financing activities for fiscal 2013 was $397.8 million, compared to $1.1 billion in fiscal 2012. The primary reason for the decrease in net cash used in financing activities was the repurchase of Class A common stock combined with the redemption of our 7-5/8% Senior Notes that both occurred in fiscal 2012 partially offset by an increase in dividends paid in fiscal 2013.

Net cash used in financing activities for fiscal 2012 was $1.1 billion, compared to $585.0 million for the same period in fiscal 2011. The primary reason for the increase in net cash used in financing activities was the repurchase of Class A common stock in the second quarter of fiscal 2012 for $1.2 billion. Additionally, on October 24, 2011, we completed a $750.0 million public offering of our New Senior Notes. We used $505.0 million of the net proceeds from this offering to redeem the remaining $469.3 million aggregate principal amount of our 7-5/8% Senior Notes of our subsidiary, MOS Holdings Inc., on December 1, 2011.

Debt Instruments, Guarantees and Related Covenants

See Note 11 of our Notes to Consolidated Financial Statements for additional information relating to our financing arrangements.

Financial Assurance Requirements

In addition to various operational and environmental regulations related to our Phosphates segment, we incur liabilities for reclamation activities under which we are subject to financial assurance requirements. In various jurisdictions in which we operate, particularly Florida and Louisiana, we are required to pass a financial strength test or provide credit support, typically in the form of surety bonds or letters of credit. See Other Commercial Commitments under Off-Balance Sheet Arrangements and Obligations and Note 21 of our Notes to Consolidated Financial Statements for additional information about these requirements.

Off-Balance Sheet Arrangements and Obligations

Off-Balance Sheet Arrangements

In accordance with the definition under rules of the Securities and Exchange Commission (“SEC”), the following qualify as off-balance sheet arrangements:

• certain obligations under guarantee contracts that have “any of the characteristics identified in FASB ASC paragraph ASC 460-10-15-4 (Guarantees Topic)”;

• a retained or contingent interest in assets transferred to an unconsolidated entity or similar arrangement that serves as credit, liquidity or market risk support to that entity for such assets;

• any obligation, including a contingent obligation, under a contract that would be accounted for as derivative instruments except that it is both indexed to the registrant’s own stock and classified as equity; and

• any obligation, arising out of a variable interest in an unconsolidated entity that is held by, and material to, the registrant, where such entity provides financing, liquidity, market risk or credit risk support to the registrant, or engages in leasing, hedging or research and development services with the registrant.

Information regarding guarantees that meet the above requirements is included in Note 17 of our Notes to Consolidated Financial Statements and is hereby incorporated by reference. We do not have any contingent interest in assets transferred, derivative instruments, or variable interest entities that qualify as off-balance sheet arrangements under SEC rules.

F-22

Contractual Cash Obligations

The following is a summary of our contractual cash obligations as of May 31, 2013:

			Payments by Fiscal Year
(in millions)	Total		Less than 1 year		1 - 3 years		3 - 5 years		More than 5 years
Long-term debt	$	1,010.5	$	0.9	$	7.6	$	1.5	$	1,000.5
Estimated interest payments on long-term debt (a)		759.7		50.0		99.5		98.3		511.9
Operating leases		191.7		50.2		62.4		39.5		39.6
Purchase commitments (b)		5,410.2		1,872.5		1,187.1		277.3		2,073.3
Pension and postretirement liabilities (c)		529.0		71.7		94.5		99.1		263.7
Total contractual cash obligations	$	7,901.1	$	2,045.3	$	1,451.1	$	515.7	$	3,889.0

^(a)  Based on interest rates and debt balances as of May 31, 2013.

^(b)  Based on prevailing market prices as of May 31, 2013. The majority of items more than 5 years is our estimated purchase commitment from our equity investee, the Miski Mayo Mine.

^(c)  Fiscal 2014 pension plan payments are based on minimum funding requirements. For years thereafter, pension plan payments are based on expected benefits paid. The postretirement plan payments are based on projected benefit payments.

Other Commercial Commitments

The following is a summary of our other commercial commitments as of May 31, 2013:

			Commitment Expiration by Fiscal Year
(in millions)	Total		Less than 1 year		1 - 3 years		3 - 5 years		More than 5 years
Letters of credit	$	21.7	$	21.7	$	-	$	-	$	-
Surety bonds		183.9		167.9		15.7		-		0.3
Total	$	205.6	$	189.6	$	15.7	$	-	$	0.3

The surety bonds and letters of credit generally expire within one year or less but a substantial portion of these instruments provide financial assurance for continuing obligations and, therefore, in most cases, must be renewed on an annual basis. We issue Letters of Credit through our Credit Facility and bi-lateral agreements. As of May 31, 2013 we had $12.7 million of outstanding Letters of Credit through our Credit Facility and $9.0 million outstanding through bi-lateral agreements. We primarily incur liabilities for reclamation activities in our Florida operations and for phosphogypsum management system (“Gypstack”) closure in our Florida and Louisiana operations where, in order to obtain necessary permits, we must either pass a test of financial strength or provide credit support, typically in the form of surety bonds or letters of credit. As of May 31, 2013, we had $170.2 million in surety bonds outstanding for mining reclamation obligations in Florida. We have letters of credit directly supporting mining reclamation activity of $1.9 million. The surety bonds generally require us to obtain a discharge of the bonds or to post additional collateral (typically in the form of cash or letters of credit) at the request of the issuer of the bonds.

We are subject to financial responsibility obligations for our Gypstacks in Florida and Louisiana. We are currently in compliance with these financial assurance requirements because our financial strength permits us to meet applicable financial strength tests. However, at various times we have not met the applicable financial

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strength tests and there can be no assurance that we will be able to meet applicable financial strength tests in Florida and Louisiana in the future. In the event we do not meet either the Florida or Louisiana financial strength test, we could be required to seek an alternate financial strength test acceptable to state regulatory authorities or provide credit support, which may include surety bonds, letters of credit and cash escrows or trust funds. Cash escrows or trust funds would be classified as restricted cash on our Consolidated Balance Sheets. Assuming we maintain our current levels of liquidity and capital resources, we do not expect that the Florida and Louisiana requirements will have a material effect on our results of operations, liquidity or capital resources.

Currently, financial assurance requirements in Florida and Louisiana for the closure of Gypstacks are, in general terms, based upon the same assumptions and associated estimated values, as the AROs recognized for financial reporting purposes. For financial reporting purposes, we recognize the AROs based on the estimated future closure and post-closure costs, the undiscounted value of which is approximately $1.5 billion. The value of the AROs for closure of Mosaic’s Gypstacks, discounted to the present value based on a credit-adjusted risk-free rate, is reflected on our Consolidated Balance Sheets in the amount of approximately $450 million as of May 31, 2013. Compliance with the financial assurance requirements in Florida and Louisiana is based on the undiscounted Gypstack closure estimates.

In connection with the Company’s efforts to achieve resolution of certain environmental matters, the U.S. Department of Justice and the U.S. Environmental Protection Agency, together with the States of Louisiana and Florida, seek to require Mosaic to provide financial assurances for the closure of Gypstacks that are significantly more burdensome than the current requirements and would require Mosaic to pre-fund a meaningful portion of the estimated costs to close all the Gypstacks currently, rather than the costs estimated at the end of their useful lives. See the discussions under “Environmental, Health and Safety Matters – Operating Requirements and Impacts – Financial Assurance” below and “EPA RCRA Initiative” in Note 21 of our Notes to Consolidated Financial Statements for more information on this matter.

Other Long-Term Obligations

The following is a summary of our other long-term obligations as of May 31, 2013:

		Payments by Fiscal Year
(in millions)	Total	Less than 1 year		1 - 3 years		3 - 5 years		More than 5 years
ARO (a)	$1,838.7	$	86.6	$	172.9	$	92.6	$	1,486.6

^(a)  Represents the undiscounted, inflation adjusted estimated cash outflows required to settle the AROs. The corresponding present value of these future expenditures is $658.5 million as of May 31, 2013, and is reflected in our accrued liabilities and other noncurrent liabilities in our Consolidated Balance Sheets.

As of May 31, 2013, we had contractual commitments with non-affiliated customers for the sale of approximately 1.8 million tonnes of concentrated phosphates and 0.4 million tonnes of potash for fiscal 2014.

Most of our export sales of phosphate and potash crop nutrients are marketed through two North American export associations, PhosChem and Canpotex, respectively, which fund their operations in part through third-party financing facilities. As a member, Mosaic or our subsidiaries are, subject to certain conditions and exceptions, contractually obligated to reimburse the export associations for their pro rata share of any operating expenses or other liabilities incurred. The reimbursements are made through reductions to members’ cash receipts from the export associations.

Commitments are set forth in Note 20 of our Notes to Consolidated Financial Statements and are incorporated herein by reference.

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Income Tax Obligations

Gross uncertain tax positions as of May 31, 2013 of $316.8 million are not included in the other long-term obligations table presented above because the timing of the settlement of unrecognized tax benefits cannot be reasonably determined. For further discussion, refer to Note 13 of our Notes to Consolidated Financial Statements.

Market Risk

We are exposed to the impact of fluctuations in the relative value of currencies, fluctuations in the purchase price of natural gas, ammonia and sulfur consumed in operations, and changes in freight costs, as well as changes in the market value of our financial instruments. We periodically enter into derivatives in order to mitigate our foreign currency risks and the effects of changing commodity prices and freight prices, but not for speculative purposes.

Foreign Currency Exchange Rates

We use financial instruments, including forward contracts, zero-cost collars and futures, which typically expire within one year, to reduce the impact of foreign currency exchange risk in our cash flows, not the foreign currency volatility in our earnings.

One of the primary currency exposures relates to several of our Canadian entities, whose sales are denominated in U.S. dollars, but whose costs are paid principally in Canadian dollars, which is their functional currency. We generally enter into derivative instruments for a portion of the currency risk exposure on anticipated cash inflows and outflows, including contractual outflows for our Potash expansion and other capital expenditures denominated in Canadian dollars. A stronger Canadian dollar generally reduces these entities’ operating earnings. A weaker Canadian dollar has the opposite effect. Depending on the underlying exposure, such derivatives can create additional earnings volatility because we do not use hedge accounting. Gains or losses on these derivative contracts, both for open contracts at quarter end (unrealized) and settled contracts (realized), are recorded in either cost of goods sold or foreign currency transaction loss (gain).

The functional currency for our Brazilian subsidiaries is the Brazilian real. We finance our Brazilian inventory purchases with U.S. dollar denominated liabilities. A stronger Brazilian real relative to the U.S. dollar has the impact of reducing these liabilities on a functional currency basis. When this occurs, an associated foreign currency transaction gain is recorded as non-operating income (expense). A weaker Brazilian real has the opposite effect. We also enter into derivative instruments for a portion of our currency risk exposure on anticipated cash flows, and record an associated gain or loss in the foreign currency transaction gain and loss line in the Consolidated Statements of Earnings.

Our foreign currency exchange contracts do not qualify for hedge accounting; therefore, all gains and losses are recorded in the Consolidated Statements of Earnings. Gains and losses on foreign currency exchange contracts are recorded in either cost of goods sold or foreign currency transaction loss (gain) in the Consolidated Statement of Earnings depending on the underlying transactions.

As discussed above, we have Canadian dollar, Brazilian real, and other foreign currency exchange contracts. As of May 31, 2013 and 2012, the fair value of our major foreign currency exchange contracts were ($28.3) million and ($13.5) million, respectively. We recorded an unrealized loss of $1.6 million in cost of goods sold and recorded an unrealized loss of $13.8 million in foreign currency transaction gain (losses) in the Consolidated Statements of Earnings for fiscal 2013.

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The table below provides information about Mosaic’s significant foreign exchange derivatives.

	As of May 31, 2013					As of May 31, 2012
	Expected Maturity Date					Expected Maturity Date
(in millions)	Year ending May 31, 2014					Year ending May 31, 2013		Fair Value
			Fair Value
Foreign Currency Exchange Forwards
Canadian Dollar
Notional (million US$) - long	$	58.4	$	(29.5	)	$	-	$	(28.2	)
Weighted Average Rate - Canadian dollar to U.S. dollar		1.0276					-
Notional (million US$) - short	$	895.0				$	1,157.9
Weighted Average Rate - Canadian dollar to U.S. dollar		1.0056					0.9896
Foreign Currency Exchange Non-Deliverable Forwards
Brazilian Real
Notional (million US$) - long	$	173.1	$	3.2		$	394.5	$	4.6
Weighted Average Rate - Brazilian real to U.S. dollar		2.0391					1.9634
Notional (million US$) - short	$	149.8				$	110.3
Weighted Average Rate - Brazilian real to U.S. dollar		2.0848					1.9179
Indian Rupee
Notional (million US$) - long	$	131.9	$	(2.3	)	$	141.7	$	10.1
Weighted Average Rate - Indian rupee to U.S. dollar		57.3234					52.6348
Foreign Currency Exchange Futures Brazilian Real
Brazilian Real
Notional (million US$) - long	$	16.0	$	0.3		$	31.5	$	-
Weighted Average Rate - Brazilian real to U.S. dollar		2.0849					1.9537
Notional (million US$) - short	$	-	$	-		$	15.8	$	-
Weighted Average Rate - Brazilian real to U.S. dollar		-					1.9984
Total Fair Value			$	(28.3	)			$	(13.5	)

Commodities

We use forward purchase contracts, swaps and occasionally three-way collars to reduce the risk related to significant price changes in our inputs and product prices.

Our commodities contracts do not qualify for hedge accounting; therefore, all gains and losses are recorded in the Consolidated Statements of Earnings. Gains and losses on commodities contracts are recorded in cost of goods sold in the Consolidated Statements of Earnings.

As of May 31, 2013 and 2012, the fair value of our major natural gas commodities contracts were ($5.0) million and ($21.4) million, respectively. We recorded an unrealized gain of $16.1 million in cost of goods sold on the Consolidated Statements of Earnings in fiscal 2013.

Our primary commodities exposure relates to price changes in natural gas.

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The table below provides information about Mosaic’s natural gas derivatives which are used to manage the risk related to significant price changes in natural gas.

	As of May 31, 2013							As of May 31, 2012
	Expected Maturity Date							Expected Maturity Date
	Years ending May 31,				Fair Value			Years ending May 31,				Fair Value
(in millions)	2014		2015					2013		2014
Natural Gas Swaps
Notional (million MMBtu) - long		11.7		3.5	$	(5.0	)		17.7		6.6	$	(21.4	)
Weighted Average Rate (US$/MMBtu)	$	4.26	$	3.79				$	3.26	$	4.37
Total Fair Value					$	(5.0	)					$	(21.4	)

Summary

Overall, there have been no material changes in our primary market risk exposures since the prior year. We do not expect any material changes in our primary risk exposures. For additional information related to derivatives, see Notes 15 and 16 of our Notes to Consolidated Financial Statements.

Environmental, Health and Safety Matters

We are subject to an evolving complex of international, federal, state, provincial and local environmental, health, safety and security (“EHS”) laws that govern our production and distribution of crop and animal nutrients. These EHS laws regulate or propose to regulate: (i) conduct of mining, production and supply chain operations, including employee safety and facility security procedures; (ii) management and/or remediation of potential impacts to air, soil and water quality from our operations; (iii) disposal of waste materials; (iv) reclamation of lands after mining; (v) management and handling of raw materials; (vi) product content; and (vii) use of products by both us and our customers.

We have a comprehensive EHS management program that seeks to achieve sustainable, predictable and verifiable EHS performance. Key elements of our EHS program include: (i) identifying and managing EHS risk; (ii) complying with legal requirements; (iii) improving our EHS procedures and protocols; (iv) educating employees regarding EHS obligations; (v) retaining and developing professional qualified EHS staff; (vi) evaluating facility conditions; (vii) evaluating and enhancing safe workplace behaviors; (viii) performing audits; (ix) formulating EHS action plans; and (x) assuring accountability of all managers and other employees for EHS performance. Our business units are responsible for implementing day-to-day elements of our EHS program, assisted by an integrated staff of EHS professionals. We conduct audits to verify that each facility has identified risks, achieved regulatory compliance, implemented continuous EHS improvement, and incorporated EHS management systems into day-to-day business functions.

New or proposed regulatory programs can present significant challenges in ascertaining future compliance obligations, implementing compliance plans, and estimating future costs until implementing regulations have been finalized and definitive regulatory interpretations have been adopted. New or proposed regulatory requirements may require modifications to our facilities or to operating procedures and these modifications may involve significant capital costs or increases in operating costs.

We have expended, and anticipate that we will continue to expend, substantial financial and managerial resources to comply with EHS standards and continue to improve our environmental stewardship. In fiscal 2014, excluding capital expenditures arising out of the possible settlement referred to under “EPA RCRA Initiative” in Note 21 of our Notes to Consolidated Financial Statements, we expect environmental capital expenditures to total approximately $80 million, primarily related to: (i) modification or construction of waste management, water

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treatment areas and water treatment systems; (ii) construction and modification projects associated with Gypstacks and clay settling ponds at our Phosphates facilities and tailings management areas for our Potash mining and processing facilities; (iii) upgrading or new construction of air pollution control equipment at some of the concentrates plants; and (iv) capital projects associated with remediation of contamination at current or former operations. Additional expenditures for land reclamation, Gypstack closure and water treatment activities are expected to total approximately $130 million in fiscal 2014. In fiscal 2015, we estimate environmental capital expenditures will be approximately $110 million and expenditures for land reclamation activities, Gypstack closure and water treatment activities are expected to be approximately $110 million. In fiscal 2013, we spent approximately $230 million for environmental capital expenditures, land reclamation activities, Gypstack closure and water treatment activities. No assurance can be given that greater-than-anticipated EHS capital expenditures or land reclamation, Gypstack closure or water treatment expenditures will not be required in fiscal 2014 or in the future.

Operating Requirements and Impacts

Permitting. We hold numerous environmental, mining and other permits or approvals authorizing operation at each of our facilities. Our ability to continue operations at a facility could be materially affected by a government agency decision to deny or delay issuing a new or renewed permit or approval, to revoke or substantially modify an existing permit or approval, to substantially change conditions applicable to a permit modification, or by legal actions that successfully challenge our permits.

Expanding our operations or extending operations into new areas is also predicated upon securing the necessary environmental or other permits or approvals. We have been engaged in, and over the next several years will be continuing, efforts to obtain permits in support of our anticipated Florida mining operations at certain of our properties. For years, we have successfully permitted mining properties and anticipate that we will be able to permit these properties as well.

A denial of our permits, the issuance of permits with cost-prohibitive conditions, substantial delays in issuing key permits, legal actions that prevent us from relying on permits or revocation of permits can prevent or delay our mining at the affected properties and thereby materially affect our business, results of operations, liquidity or financial condition:

The Altman Extension of the Four Corners Mine. In fiscal 2009, in connection with our efforts to permit the Altman Extension (the “Altman Extension”) of our Four Corners, Florida, phosphate rock mine, non-governmental organizations for the first time filed a lawsuit in federal court contesting the actions by the U.S. Army Corps of Engineers (the “Corps”) in issuing a federal wetlands permit. Although this lawsuit remains ongoing, the federal wetlands permit issued by the Corps has remained in effect. Mining on the Altman Extension commenced and approximately 600 acres of the Altman Extension were mined and/or disturbed. The remaining approximately1,200 acres of the Altman extension of our Four Corners mine are not currently in our near-term mining plan. We believe that the permit was issued in accordance with all applicable requirements and that it will ultimately be upheld.

The Hardee County Extension of the South Fort Meade Mine. Delays in receiving a federal wetlands permit impacted the scheduled progression of mining activities for the extension of our South Fort Meade, Florida, phosphate rock mine into Hardee County. As a result, we began to idle a portion of our mining equipment at the mine in the latter part of fiscal 2010. In June 2010, the Corps issued the federal wetlands permit. Subsequently, certain non-governmental organizations filed a lawsuit against the Corps contesting its issuance of this federal wetlands permit, alleging that the actions by the Corps in issuing the permit violated certain federal laws relating to the protection of the environment. Preliminary injunctions entered into in this lawsuit subsequently resulted in shutdowns or reduced production at our South Fort Meade mine. Following the settlement of the lawsuit in February 2012 and court approval, we were able to resume normal production at our South Fort Meade mine.

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The periods of shutdown or reduced production at our South Fort Meade mine resulted in costs to suspend operations and idle plant costs, and lower phosphate rock mining production levels also adversely affected gross margin. Because of our successful execution of mitigation measures, our sales volumes were not significantly impacted. Our mitigation activities included a partial settlement that allowed us to mine a limited portion of our reserves in Hardee County; drawing down existing phosphate rock and finished product inventories; sourcing rock from our investment in the Miski Mayo Mine; purchasing phosphate rock from third parties where reasonable; and maximizing production at our other phosphate mines.

Central Florida Phosphate District Area-Wide Environmental Impact Statement. In fiscal 2011, the Corps notified us that it planned to conduct an area-wide environmental impact statement (“AEIS”) for the central Florida phosphate district. On June 1, 2012 the Corps published notice of availability of the draft AEIS in the Federal Register and announced that it would accept public comment on the draft AEIS through July 31, 2012. We, along with other members of the public, submitted comments for the Corps to consider as it completed the final AEIS. The Corps issued the final AEIS on April 25, 2013. The final AEIS includes information on environmental impacts upon which the Corps will rely in its consideration of our pending federal wetlands permits for our future Ona and DeSoto mines and an extension of our Wingate mine. The Corps has announced that it will issue an addendum to the AEIS to provide a Spanish language version of the Executive Summary section of the final AEIS and to address several minor technical questions raised by commenters. We do not expect that issuance of the addendum will delay our development of permit applications.

Local Community Involvement. In addition, in Florida, local community involvement has become an increasingly important factor in the permitting process for mining companies, and various counties and other parties in Florida have in the past filed and continue to file lawsuits challenging the issuance of some of the permits we require. These actions can significantly delay permit issuance.

Water Quality Regulations for Nutrient Discharges. There are several ongoing initiatives relating to nutrient discharges. New regulatory restrictions from these initiatives could have a material effect on either us or our customers. For example:

Water Quality Regulations for Nutrient Discharges in Florida. On December 7, 2010, we filed a lawsuit in federal court against the U.S. Environmental Protection Agency (“EPA”) challenging a rule adopted by the EPA that set numeric water quality standards (the “NNC Rule”) for nitrogen and/or phosphorus in Florida lakes and streams. The NNC Rule set criteria that would require drastic reductions in the levels of nutrients discharged into Florida lakes and streams, and would have required us and others to significantly limit discharges of these nutrients in Florida beginning in March 2012.

In February 2012, the court invalidated the NNC Rule in part and upheld it in part, and remanded the invalid parts of the rule to the EPA for reconsideration and reproposal. The court subsequently ordered that the effective date of the parts of the NNC Rule that the court had upheld and any parts re-proposed to comply with the court’s order be postponed until January 2013. Although we have not appealed, several other parties have appealed certain of the court’s rulings.

The NNC Rule includes an option to seek approval for alternative water quality criteria for specific waters or stream segments, where the science or water quality data demonstrated that the alternative criteria would be adequately protective. We are exploring the use of alternative criteria, where appropriate; however, we cannot presently predict whether we will be able to obtain approval of site-specific alternative criteria or the extent to which such approved criteria would moderate the impacts of the NNC Rule on us.

The Florida Department of Environmental Protection (the “FDEP”) has adopted state rules that could supplant many, or potentially all, of the requirements of the NNC Rule and mitigate some of the

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potential adverse effects of the NNC Rule. In June 2012, the FDEP rule was upheld by a state administrative law judge in an administrative proceeding challenging the rule brought by certain nongovernmental organizations and the FDEP rule was submitted to the EPA for approval. In July 2012, the nongovernmental organizations appealed the state administrative law judge’s decision upholding the FDEP rule to the Florida First District Court of Appeal. In February 2013, the Florida First District Court of Appeal upheld the administrative law judge’s decision.

In November 2012, the EPA approved the FDEP rule. The EPA also proposed two rules that would establish new federal nutrient criteria for (i) streams and unimpaired lakes, and (ii) coastal waters, certain estuaries not covered in the FDEP rule and flowing waters in South Florida. Pursuant to an order of the court, the EPA must adopt final versions of these rules by August 31, 2013 and September 30, 2013, respectively.

The EPA has stated that the criteria in the two new proposed rules either would supplement the scope of the FDEP rule, or would apply to all waters in Florida in the event that the FDEP rule does not go into effect. By its terms, the FDEP rule will not take effect until the EPA withdraws the criteria upheld by the court in February 2012. The EPA also suggested that if the FDEP takes further action or provides clarifications to the existing FDEP rule that would address nutrient discharges to waters not covered by the FDEP rule, the EPA would take other action, including not finalizing its proposed rules and withdrawing its current nutrient rules. In connection with that process, the EPA proposed to extend the effective date of all of its final NNC Rules from January 6, 2013 until November 15, 2013.

Separately, in November 2012, the EPA proposed total maximum daily load standards, including standards for total nitrogen and total phosphorus, for a number of waterways flowing into Tampa Bay in Florida. The waterways include sections of the Alafia River, which is a receiving water for permitted discharges from several of our operations.

On March 15, 2013, the EPA and the FDEP announced that the agencies had reached an agreement in principle under which the FDEP, not the EPA, would implement numeric nutrient criteria for Florida’s waters. Among other things, the agreement is contingent upon the State of Florida passing legislation requiring the development of numeric nutrient criteria for certain categories of other water bodies and the FDEP adopting by rule a standard for implementing numeric nutrient criteria in Florida.

On April 12, 2013, the court granted the EPA’s motion to delay the effective date of the EPA’s rules establishing downstream protection values but denied the EPA’s motion to delay the effective date of the EPA’s NNC Rule for lakes and springs, which are now in effect. We are reviewing the potential effect on us of the NNC Rule for lakes and springs.

Subject to further litigation or rulemaking developments, we expect that compliance with the requirements of nutrient criteria rules could adversely affect our Florida Phosphate operations, require significant capital expenditures and substantially increase our annual operating expenses.

Nutrient Discharges into the Gulf of Mexico and Mississippi River Basin. The Gulf Coast Ecosystem Restoration Task Force, established by executive order of the President and comprised of five Gulf states and eleven federal agencies, has delivered a final strategy for long-term ecosystem restoration for the Gulf Coast. The strategy calls for, among other matters, reduction of the flow of excess nutrients into the Gulf of Mexico through state nutrient reduction frameworks, new nutrient reduction approaches and reduction of agricultural and urban sources of excess nutrients. Implementation of the strategy will require legislative or regulatory action at the state level. We cannot predict what the requirements of any such legislative or regulatory action could be or whether or how it would affect us or our customers.

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In March 2012, several nongovernmental organizations brought a lawsuit in federal court against the EPA, seeking to require it to establish numeric nutrient criteria for nitrogen and phosphorous in the Mississippi River basin and the Gulf of Mexico. The EPA had previously denied a 2008 petition seeking such standards. On May 30, 2012, the court granted our motion to intervene in this lawsuit. We intend to defend vigorously the EPA’s decision not to establish numeric nutrient criteria for nitrogen and phosphorous in the Mississippi River basin and the Gulf of Mexico. In the event that the EPA were to adopt such a rule, we cannot predict what its requirements would be or the effects it would have on us or our customers.

Reclamation Obligations. During our phosphate mining operations, we remove overburden in order to retrieve phosphate rock reserves. Once we have finished mining in an area, we return overburden and sand tailings and reclaim the area in accordance with approved reclamation plans and applicable laws. We have incurred and will continue to incur significant costs to fulfill our reclamation obligations.

Management of Residual Materials and Closure of Management Areas. Mining and processing of potash and phosphate generate residual materials that must be managed both during the operation of the facility and upon facility closure. Potash tailings, consisting primarily of salt and clay, are stored in surface disposal sites. Phosphate clay residuals from mining are deposited in clay settling ponds. Processing of phosphate rock with sulfuric acid generates phosphogypsum that is stored in Gypstacks.

During the life of the tailings management areas, clay settling ponds and Gypstacks, we have incurred and will continue to incur significant costs to manage our potash and phosphate residual materials in accordance with environmental laws and regulations and with permit requirements. Additional legal and permit requirements will take effect when these facilities are closed. Our asset retirement obligations are further discussed in Note 14 of our Notes to Consolidated Financial Statements.

Financial Assurance. Separate from our accounting treatment for reclamation and closure liabilities, some jurisdictions in which we operate have required us either to pass a test of financial strength or provide credit support, typically surety bonds, financial guarantees or letters of credit, to address phosphate mining reclamation liabilities and closure liabilities for clay settling areas and Gypstacks. See Other Commercial Commitments under Off-Balance Sheet Arrangements and Obligations above for additional information about these requirements. Among other matters, the EPA is engaged in an ongoing review of mineral processing industries, including us and other phosphoric acid producers, under the U.S. Resource Conservation and Recovery Act. We are negotiating with the government the terms of a possible settlement of certain matters related to this review. The final terms of this possible settlement are not yet agreed or approved; however, if a settlement can be achieved, in all likelihood our multi-faceted commitments would include as one of its key elements our deposit into a trust fund of cash in an amount currently estimated at approximately $625 million to pre-fund a material portion of our existing asset retirement obligations for closure and post-closure care of our Gypstacks. The fund would be classified as restricted cash on our balance sheet. See the discussion under “EPA RCRA Initiative” in Note 21 of our Notes to Consolidated Financial Statements for additional information about this matter.

In connection with closure plans for potash facilities, the potash industry proposed a risk-based model that evaluated potential stakeholder economic exposures to assist in determining an acceptable level of residual risk. The Province of Saskatchewan responded to the proposal with a suggested path forward that called for the establishment of separate company environmental trusts to be funded by the year 2021. A decision with respect to the Province’s proposal is still being finalized. Regardless of the final outcome, we do not anticipate that additional financial assurance funding requirements for closure of potash facilities would have a material effect on our results of operations, liquidity or capital resources in the foreseeable future.

Climate Change

We are committed to finding ways to meet the challenges of crop nutrient production and distribution in the context of the need to reduce greenhouse gas emissions. While focused on helping the world grow the food it

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needs, we have proven our commitment to using our resources more efficiently and have delivered innovative energy recovery technologies that result in our generation of much of the energy we need in our North American Phosphate operations from high efficiency heat recovery systems that result in lower greenhouse gas emissions.

Climate Change Regulation. Various governmental initiatives to limit greenhouse gas emissions are under way or under consideration around the world. These initiatives could restrict our operating activities, require us to make changes in our operating activities that would increase our operating costs, reduce our efficiency or limit our output, require us to make capital improvements to our facilities, increase our energy, raw material and transportation costs or limit their availability, or otherwise adversely affect our results of operations, liquidity or capital resources, and these effects could be material to us.

The direct greenhouse gas emissions from our operations result primarily from:

• Combustion of natural gas to produce steam and dry potash products at our Belle Plaine, Saskatchewan, and Hersey, Michigan potash solution mines. To a lesser extent, at our potash shaft mines, natural gas is used as a fuel to heat fresh air supplied to the shaft mines and for drying potash products.

• The use of natural gas as a feedstock in the production of ammonia at our Faustina, Louisiana phosphates plant.

• Process reactions from naturally occurring carbonates in phosphate rock.

In addition, the production of energy and raw materials that we purchase from unrelated parties for use in our business and energy used in the transportation of our products and raw materials can result in greenhouse gas emissions.

Governmental greenhouse gas emission initiatives include among others:

• Initiatives in the United States: Various legislative or regulatory initiatives relating to greenhouse gases have been adopted or considered by the U.S. Congress, the EPA or various states. We do not believe that any such legislation or regulation that has been adopted has had, or that any such legislation or regulation that is currently under active consideration is reasonably likely to have, a material adverse effect on our results of operations, liquidity or capital resources. It is possible, however, that future legislation or regulation addressing climate change could adversely affect our operating activities, energy, raw material and transportation costs, results of operations, liquidity or capital resources, and these effects could be material.

Our continuing focus on operational excellence in our Phosphates business segment is helping us reduce our indirect greenhouse gas emissions. For example, normal chemical processes in our U.S. Phosphates’ operations generate heat that can be captured and converted into electricity to replace some of the electricity we currently purchase. We already have waste heat recovery systems that generate a portion of our U.S. Phosphates’ electricity needs and are continuing waste heat recovery initiatives that will deliver significant additional energy savings. These initiatives, along with energy efficiency and conservation measures, are intended to offset most or all of our U.S. Phosphates’ electricity purchases and are expected to significantly reduce the indirect greenhouse gas emissions associated with our Phosphates business.

• Initiatives in Canada. While the Canadian federal government has withdrawn from the Kyoto Protocol, Canada remains committed to significant greenhouse gas reductions. Public announcements have indicated that future federal targets will align with the previously stated reduction targets for 2020 of 17% below 2005 levels through a sector-by-sector approach aligned with the United States, where appropriate. Our Saskatchewan Potash facilities continue to work with the Canadian Fertilizer Institute and Environment Canada on a sector based approach.

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In May 2009, the Province of Saskatchewan, in which our Canadian potash mines are located, began to consider legislation intended to lead to the development and administration of climate change regulation in Saskatchewan by the Province rather than the federal government. Key elements under consideration by the Province include a primary focus on achieving the 20% reduction by 2020 through technological advancements and creation of a Technology Fund to finance low-carbon investments by regulated emitters. As part of this initiative, a Climate Change Foundation will be established to fund research and development projects related to reducing and avoiding greenhouse gas emissions, water conservation, biodiversity conservation, energy efficiency, adaptation planning, and education and public awareness.

We continue to work with the Canadian Fertilizer Institute, Saskatchewan Mining Association and Saskatchewan Potash Producers Association in negotiating with the Canadian federal and provincial governments, focusing on, among other matters, energy reduction initiatives as a means for reducing greenhouse gas emissions and addressing the implications of implementation of greenhouse gas emissions regulations in Canada on the competitiveness of Canadian industry in the global marketplace.

We continue to focus on energy efficiency initiatives within our operations. As part of our recently completed and ongoing capital projects activities, the Potash business unit is installing higher efficiency motors and electrical systems that reduce energy requirements compared to older systems.

• International Initiatives. Although international negotiations concerning greenhouse gas emission reductions and other responses to climate change are underway, final obligations in the post-Kyoto Protocol period after 2012 remain undefined. Any new international agreements addressing climate change could adversely affect our operating activities, energy, raw material and transportation costs, results of operations, liquidity or capital resources, and these effects could be material. In addition, to the extent climate change restrictions imposed in countries where our competitors operate, such as China, India, Former Soviet Union countries or Morocco, are less stringent than in the United States or Canada, our competitors could gain cost or other competitive advantages over us.

Operating Impacts Due to Climate Change. The prospective impact of potential climate change on our operations and those of our customers and farmers remains uncertain. Some scientists have hypothesized that the impacts of climate change could include changes in rainfall patterns, water shortages, changing sea levels, changing storm patterns and intensities, and changing temperature levels and that these changes could be severe. These impacts could vary by geographic location. Severe climate change could impact our costs and operating activities, the location and cost of global grain and oilseed production, and the supply and demand for grains and oilseeds. At the present time, we cannot predict the prospective impact of potential climate change on our results of operations, liquidity or capital resources, or whether any such effects could be material to us.

Remedial Activities

The U.S. Comprehensive Environmental Response, Compensation, and Liability Act, commonly known as CERCLA or the Superfund law, and state analogues, impose liability, without regard to fault or to the legality of a party’s conduct, on certain categories of persons, including those who have disposed of “hazardous substances” at a third-party location. Under Superfund, or its various state analogues, one party may be responsible for the entire site, regardless of fault or the locality of its disposal activity. We have contingent environmental remedial liabilities that arise principally from three sources which are further discussed below: (i) facilities currently or formerly owned by our subsidiaries or their predecessors; (ii) facilities adjacent to currently or formerly owned facilities; and (iii) third-party Superfund or state equivalent sites where we are alleged to have disposed of hazardous materials. Taking into consideration established accruals for environmental remedial matters of approximately $24.7 million as of May 31, 2013, expenditures for these known conditions currently are not expected, individually or in the aggregate, to have a material effect on our business or financial condition. However, material expenditures could be required in the future to remediate the contamination at known sites or at other current or former sites.

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Remediation at Our Facilities. Many of our formerly owned or current facilities have been in operation for a number of years. The historical use and handling of regulated chemical substances, crop and animal nutrients and additives as well as by-product or process tailings at these facilities by us and predecessor operators have resulted in soil, surface water and groundwater impacts.

At many of these facilities, spills or other releases of regulated substances have occurred previously and potentially could occur in the future, possibly requiring us to undertake or fund cleanup efforts under Superfund or otherwise. In some instances, we have agreed, pursuant to consent orders or agreements with the appropriate governmental agencies, to undertake certain investigations, which currently are in progress, to determine whether remedial action may be required to address site impacts. At other locations, we have entered into consent orders or agreements with appropriate governmental agencies to perform required remedial activities that will address identified site conditions. Taking into account established accruals, future expenditures for these known conditions currently are not expected, individually or in the aggregate, to have a material adverse effect on our business or financial condition. However, material expenditures by us could be required in the future to remediate the environmental impacts at these or at other current or former sites.

Remediation at Third-Party Facilities. Various third parties have alleged that our historical operations have impacted neighboring off-site areas or nearby third-party facilities. In some instances, we have agreed, pursuant to orders from or agreements with appropriate governmental agencies or agreements with private parties, to undertake or fund investigations, some of which currently are in progress, to determine whether remedial action, under Superfund or otherwise, may be required to address off-site impacts. Our remedial liability at these sites, either alone or in the aggregate, taking into account established accruals, currently is not expected to have a material adverse effect on our business or financial condition. As more information is obtained regarding these sites, this expectation could change.

Liability for Off-Site Disposal Locations. Currently, we are involved or concluding involvement for off-site disposal at several Superfund or equivalent state sites. Moreover, we previously have entered into settlements to resolve liability with regard to Superfund or equivalent state sites. In some cases, such settlements have included “reopeners,” which could result in additional liability at such sites in the event of newly discovered contamination or other circumstances. Our remedial liability at such disposal sites, either alone or in the aggregate, currently is not expected to have a material adverse effect on our business or financial condition. As more information is obtained regarding these sites and the potentially responsible parties involved, this expectation could change.

Product Requirements and Impacts

International, federal, state and provincial standards require us to register many of our products before these products can be sold. The standards also impose labeling requirements on these products and require us to manufacture the products to formulations set forth on the labels. We believe that, when handled and used as intended, based on the available data, crop nutrient materials do not pose harm to human health or the environment and that any additional standards or regulatory requirements relating to product requirements and impacts will not have a material adverse effect on our business or financial condition.

Additional Information

For additional information about phosphate mine permitting in Florida, our environmental liabilities, the environmental proceedings in which we are involved, our asset retirement obligations related to environmental matters, and our related accounting policies, see Environmental Liabilities and AROs under Critical Accounting Estimates above and Notes 3, 14, and 21 of our Notes to Consolidated Financial Statements.

Sustainability

We are committed to making informed choices that improve our corporate governance, financial strength, operational efficiency, environmental stewardship, community engagement and resource management. Through these efforts, we intend to sustain our business and experience lasting success.

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We have included, or incorporate by reference, throughout this annual report on Form 10-K discussions of various matters relating to our sustainability, in its broadest sense, that we believe may be material to our investors. These matters include but are not limited to discussions about: corporate governance including the leadership and respective roles of our Board of Directors, its committees and management as well as succession planning; recent and prospective developments in our business; product development; risk, enterprise risk management and risk oversight; the regulatory and permitting environment for our business and ongoing regulatory and permitting initiatives; executive compensation practices; employee and contractor safety; and other EHS matters including climate change, water management, energy and other operational efficiency initiatives, reclamation and asset retirement obligations. Other matters relating to sustainability are included in our sustainability reports that are available on our website at www.mosaicco.com/sustainability. Our sustainability reports are not incorporated by reference in this annual report on Form 10-K.

Contingencies

Information regarding contingencies in Note 21 of our Notes to Consolidated Financial Statements is incorporated herein by reference.

Related Parties

Information regarding related party transactions is set forth in Note 22 of our Notes to Consolidated Financial Statements and is incorporated herein by reference.

Recently Issued Accounting Guidance

Recently issued accounting guidance is set forth in Note 5 of our Notes to Consolidated Financial Statements and is incorporated herein by reference.

Forward-Looking Statements

Cautionary Statement Regarding Forward Looking Information

All statements, other than statements of historical fact, appearing in this report constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements include, among other things, statements about our expectations, beliefs, intentions or strategies for the future, including statements about the Cargill Transaction and its nature, impact and benefits, statements concerning our future operations, financial condition and prospects, statements regarding our expectations for capital expenditures, statements concerning our level of indebtedness and other information, and any statements of assumptions regarding any of the foregoing. In particular, forward-looking statements may include words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “potential,” “predict,” “project” or “should.” These statements involve certain risks and uncertainties that may cause actual results to differ materially from expectations as of the date of this filing.

Factors that could cause reported results to differ materially from those expressed or implied by the forward-looking statements include, but are not limited to, the following:

• business and economic conditions and governmental policies affecting the agricultural industry where we or our customers operate, including price and demand volatility resulting from periodic imbalances of supply and demand;

• changes in farmers’ application rates for crop nutrients;

• changes in the operation of world phosphate or potash markets, including continuing consolidation in the crop nutrient industry, particularly if we do not participate in the consolidation;

F-35

• pressure on prices realized by us for our products;

• the expansion or contraction of production capacity or selling efforts by competitors or new entrants in the industries in which we operate, including the effects of test runs by members of Canpotex to prove the production capacity of potash expansion projects;

• the ability of Mosaic, Ma’aden and SABIC to agree upon definitive agreements related to the Northern Promise Joint Venture, the final terms of any such definitive agreements, the ability of the Northern Promise Joint Venture to obtain project financing in acceptable amounts and upon acceptable terms, the future success of current plans for the joint venture and any future changes in those plans;

• build-up of inventories in the distribution channels for our products that can adversely affect our sales volumes and selling prices;

• seasonality in our business that results in the need to carry significant amounts of inventory and seasonal peaks in working capital requirements, and may result in excess inventory or product shortages;

• changes in the costs, or constraints on supplies, of raw materials or energy used in manufacturing our products, or in the costs or availability of transportation for our products;

• rapid drops in the prices for our products and the raw materials we use to produce them that can require us to write down our inventories to the lower of cost or market;

• the effects on our customers of holding high cost inventories of crop nutrients in periods of rapidly declining market prices for crop nutrients;

• the lag in realizing the benefit of falling market prices for the raw materials we use to produce our products that can occur while we consume raw materials that we purchased or committed to purchase in the past at higher prices;

• customer expectations about future trends in the selling prices and availability of our products and in farmer economics;

• disruptions to existing transportation or terminaling facilities;

• shortages of railcars, barges and ships for carrying our products and raw materials;

• the effects of and change in trade, monetary, environmental, tax and fiscal policies, laws and regulations;

• foreign exchange rates and fluctuations in those rates;

• tax regulations, currency exchange controls and other restrictions that may affect our ability to optimize the use of our liquidity;

• other risks associated with our international operations, including any potential adverse effects in the event of active protests against natural resource companies in Peru;

• adverse weather conditions affecting our operations, including the impact of potential hurricanes or excess rainfall;

• difficulties or delays in receiving, challenges to, increased costs of obtaining or satisfying conditions of, or revocation or withdrawal of required governmental and regulatory approvals including permitting activities;

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• changes in the environmental and other governmental regulation that applies to our operations, including the possibility of further federal or state legislation or regulatory action affecting greenhouse gas emissions or of restrictions, or liabilities related to elevated levels of naturally-occurring radiation that arise from disturbing the ground in the course of mining activities or possible efforts to reduce the flow of nutrients into the Gulf of Mexico or the Mississippi River basin;

• the potential costs and effects of implementation of federal or state water quality standards for the discharge of nitrogen and/or phosphorus into Florida waterways;

• the financial resources of our competitors, including state-owned and government-subsidized entities in other countries;

• the possibility of defaults by our customers on trade credit that we extend to them or on indebtedness that they incur to purchase our products and that we guarantee;

• any significant reduction in customers’ liquidity or access to credit that they need to purchase our products;

• rates of return on, and the investment risks associated with, our cash balances;

• the effectiveness of our risk management strategy;

• the effectiveness of the processes we put in place to manage our significant strategic priorities, including the expansion of our Potash business;

• actual costs of various items differing from management’s current estimates, including, among others, asset retirement, environmental remediation, reclamation or other environmental obligations, or Canadian resource taxes and royalties;

• the costs and effects of legal and administrative proceedings and regulatory matters affecting us, including environmental, tax or administrative proceedings, complaints that our operations are adversely impacting nearby farms, businesses, other property uses or properties, settlements thereof and actions taken by courts with respect to approvals of settlements, resolution of global tax audit activity, and other further developments in legal proceedings and regulatory matters;

• the success of our efforts to attract and retain highly qualified and motivated employees;

• strikes, labor stoppages or slowdowns by our work force or increased costs resulting from unsuccessful labor contract negotiations;

• brine inflows at our Esterhazy, Saskatchewan potash mine as well as potential inflows at our other shaft mines;

• accidents involving our operations, including potential fires, explosions, seismic events or releases of hazardous or volatile chemicals;

• terrorism or other malicious intentional acts, including cybersecurity risks such as attempts to gain unauthorized access to, or disable, our information technology systems, or our costs of addressing malicious intentional acts;

• other disruptions of operations at any of our key production and distribution facilities, particularly when they are operating at high operating rates;

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• changes in antitrust and competition laws or their enforcement;

• actions by the holders of controlling equity interests in businesses in which we hold a noncontrolling interest;

• the adequacy of our property, business interruption and casualty insurance policies to cover potential hazards and risks incident to our business, and our willingness and ability to maintain current levels of insurance coverage as a result of market conditions, our loss experience and other factors;

• restrictions on our ability to execute certain actions and potential liabilities imposed on us by the agreements relating to the Cargill Transaction; and

• other risk factors reported from time to time in our Securities and Exchange Commission reports.

Material uncertainties and other factors known to us are discussed in Item 1A, “Risk Factors,” of our annual report on Form 10-K for the fiscal year ended May 31, 2013 and incorporated by reference herein as if fully stated herein.

We base our forward-looking statements on information currently available to us, and we undertake no obligation to update or revise any of these statements, whether as a result of changes in underlying factors, new information, future events or other developments.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders

The Mosaic Company:

We have audited the accompanying consolidated balance sheets of The Mosaic Company and subsidiaries as of May 31, 2013 and 2012, and the related consolidated statements of earnings, comprehensive income, cash flows, and equity for each of the years in the three-year period ended May 31, 2013. In connection with our audits of the consolidated financial statements, we also have audited financial statement Schedule II—Valuation and Qualifying Accounts. We also have audited The Mosaic Company’s internal control over financial reporting as of May 31, 2013, based on criteria established in Internal Control—Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Mosaic Company’s management is responsible for these consolidated financial statements, the financial statement schedule, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on these consolidated financial statements and financial statement schedule and an opinion on the Company’s internal control over financial reporting based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the consolidated financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of The Mosaic Company and subsidiaries as of May 31, 2013 and 2012, and the results of their operations and their cash flows for each of the years in the three-year period ended May 31, 2013, in conformity with U.S. generally accepted accounting principles. In our opinion, the related financial statement schedule, when considered in relation to the basic consolidated financial statements taken as a whole, presents fairly, in all material respects, the information set forth therein. Also in our opinion, The Mosaic Company maintained, in all

F-39

material respects, effective internal control over financial reporting as of May 31, 2013, based on criteria established in Internal Control—Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

/s/ KPMG LLP

Minneapolis, Minnesota

July 16, 2013

F-40

Consolidated Statements of Earnings

In millions, except per share amounts

	Years Ended May 31,
	2013			2012			2011
Net sales	$	9,974.1		$	11,107.8		$	9,937.8
Cost of goods sold		7,213.9			8,022.8			6,816.0
Gross margin		2,760.2			3,085.0			3,121.8
Selling, general and administrative expenses		427.3			410.1			372.5
Other operating expenses		123.3			63.8			85.1
Operating earnings		2,209.6			2,611.1			2,664.2
Interest income (expense), net		18.8			18.7			(5.1	)
Foreign currency transaction (loss) gain		(15.9	)		16.9			(56.3	)
Gain on sale of equity investment		-			-			685.6
Other income (expense)		2.0			(17.8	)		(17.1	)
Earnings from consolidated companies before income taxes		2,214.5			2,628.9			3,271.3
Provision for income taxes		341.0			711.4			752.8
Earnings from consolidated companies		1,873.5			1,917.5			2,518.5
Equity in net earnings (loss) of nonconsolidated companies		18.3			13.3			(5.0	)
Net earnings including noncontrolling interests		1,891.8			1,930.8			2,513.5
Less: Net earnings (loss) attributable to noncontrolling interests		3.1			0.6			(1.1	)
Net earnings attributable to Mosaic	$	1,888.7		$	1,930.2		$	2,514.6
Basic net earnings per share attributable to Mosaic	$	4.44		$	4.44		$	5.64
Basic weighted average number of shares outstanding		425.7			435.2			446.0
Diluted net earnings per share attributable to Mosaic	$	4.42		$	4.42		$	5.62
Diluted weighted average number of shares outstanding		426.9			436.5			447.5

See Accompanying Notes to Consolidated Financial Statements

F-41

Consolidated Statements of Comprehensive Income

In millions

	Years ended May 31,
	2013			2012			2011
Net earnings including noncontrolling interest	$	1,891.8		$	1,930.8		$	2,513.5
Other comprehensive income (loss), net of tax
Foreign currency translation, net of tax of $16.0, $28.0 and $2.9, respectively		(46.6	)		(307.4	)		387.4
Net actuarial gain and prior service cost, net of tax of $5.7, $14.6 and $21.7, respectively		(5.7	)		(28.7	)		36.0
Other comprehensive income (loss)		(52.3	)		(336.1	)		423.4
Comprehensive income		1,839.5			1,594.7			2,936.9
Less: Comprehensive income (loss) attributable to the noncontrolling interest		2.4			(3.3	)		1.5
Comprehensive income attributable to Mosaic	$	1,837.1		$	1,598.0		$	2,935.4

See Accompanying Notes to Consolidated Financial Statements

F-42

Consolidated Balance Sheets

In millions, except per share amounts

	May 31,
	2013		2012
Assets
Current assets:
Cash and cash equivalents	$	3,697.1	$	3,811.0
Receivables, net		1,015.7		751.6
Inventories		1,557.3		1,237.6
Deferred income taxes		75.7		237.8
Other current assets		534.7		543.1
Total current assets		6,880.5		6,581.1
Property, plant and equipment, net		8,486.8		7,545.9
Investments in nonconsolidated companies		431.5		454.2
Goodwill		1,844.6		1,844.4
Deferred income taxes		212.7		50.6
Other assets		229.9		214.2
Total assets	$	18,086.0	$	16,690.4
Liabilities and Equity
Current liabilities:
Short-term debt	$	68.7	$	42.5
Current maturities of long-term debt		0.9		0.5
Accounts payable		763.1		912.4
Accrued liabilities		845.1		899.9
Deferred income taxes		87.1		62.4
Total current liabilities		1,764.9		1,917.7
Long-term debt, less current maturities		1,009.6		1,010.0
Deferred income taxes		961.4		787.9
Other noncurrent liabilities		907.2		975.4
Equity:
Preferred stock, $0.01 par value, 15,000,000 shares authorized, none issued and outstanding as of May 31, 2013 and 2012		-		-
Class A common stock, $0.01 par value, 254,300,000 shares authorized as of May 31, 2013, 150,059,772 shares issued and 128,759,772 shares outstanding as of May 31, 2013 and 2012		1.3		1.3
Class B common stock, $0.01 par value, 87,008,602 shares authorized, none issued and outstanding as of May 31, 2013 and 2012		-		-
Common stock, $0.01 par value, 1,000,000,000 shares authorized, 309,095,779 shares issued and 297,057,317 shares outstanding as of May 31, 2013, 308,749,067 shares issued and 296,710,605 shares outstanding as of May 31, 2012		3.0		3.0
Capital in excess of par value		1,491.3		1,459.5
Retained earnings		11,603.4		10,141.3
Accumulated other comprehensive income		326.4		378.0
Total Mosaic stockholders’ equity		13,425.4		11,983.1
Non-controlling interests		17.5		16.3
Total equity		13,442.9		11,999.4
Total liabilities and equity	$	18,086.0	$	16,690.4

See Accompanying Notes to Consolidated Financial Statements

F-43

Consolidated Statements of Cash Flows

In millions, except per share amounts

	Years Ended May 31,
	2013			2012			2011
Cash Flows from Operating Activities
Net earnings including noncontrolling interests	$	1,891.8		$	1,930.8		$	2,513.5
Adjustments to reconcile net earnings including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization		604.8			508.1			447.4
Deferred income taxes		200.0			245.8			196.6
Equity in net loss (earnings) of nonconsolidated companies, net of dividends		32.2			(3.7	)		8.2
Accretion expense for asset retirement obligations		33.3			32.4			31.6
Share-based compensation expense		28.2			23.4			21.1
Unrealized loss (gain) on derivatives		(1.4	)		45.9			(21.0	)
Gain on sale of equity investment		-			-			(685.6	)
Excess tax benefits related to share-based compensation		-			-			(13.4	)
Loss on sale of fixed assets		18.1			23.1			30.3
Other		12.4			8.4			6.6
Changes in assets and liabilities:
Receivables, net		(296.7	)		118.5			(297.3	)
Inventories, net		(315.5	)		6.5			(244.7	)
Other current assets and noncurrent assets		(2.7	)		(238.8	)		23.7
Accounts payable		(100.5	)		(58.4	)		240.1
Accrued liabilities		(55.7	)		(2.2	)		229.6
Other noncurrent liabilities		(160.8	)		66.0			(60.0	)
Net cash provided by operating activities		1,887.5			2,705.8			2,426.7
Cash Flows from Investing Activities
Capital expenditures		(1,588.3	)		(1,639.3	)		(1,263.2	)
Proceeds from sale of equity investment		-			-			1,030.0
Proceeds from sale of businesses		-			-			56.4
Restricted cash		5.1			5.3			(13.7	)
Investments in nonconsolidated companies		(15.0	)		-			(385.3	)
Distributions received from equity investments		2.9			-			-
Other		5.5			6.6			3.7
Net cash (used in) investing activities		(1,589.8	)		(1,627.4	)		(572.1	)
Cash Flows from Financing Activities
Payments of short-term debt		(263.1	)		(148.8	)		(381.3	)
Proceeds from issuance of short-term debt		289.1			167.9			321.8
Payments of long-term debt		(1.5	)		(542.8	)		(470.2	)
Proceeds from issuance of long-term debt		1.9			748.0			17.6
Payment of tender premium on debt		-			(17.2	)		(16.1	)
Proceeds from stock options exercised		6.0			3.0			20.3
Contributions by Cargill		-			18.5			-
Repurchase of Class A common stock		-			(1,162.5	)		-
Excess tax benefits related to share-based compensation		-			-			13.4
Cash dividends paid		(426.6	)		(119.5	)		(89.3	)
Other		(3.6	)		(7.7	)		(1.2	)
Net cash (used in) financing activities		(397.8	)		(1,061.1	)		(585.0	)
Effect of exchange rate changes on cash		(13.8	)		(112.7	)		113.8
Net change in cash and cash equivalents		(113.9	)		(95.4	)		1,383.4
Cash and cash equivalents—beginning of period		3,811.0			3,906.4			2,523.0
Cash and cash equivalents—end of period	$	3,697.1			3,811.0			3,906.4

See Accompanying Notes to Consolidated Financial Statements

F-44

Consolidated Statements of Equity

In millions, except per share data

				Mosaic Shareholders
	Shares			Dollars
	Common Stock(a)			Common Stock(a)			Capital in Excess of Par Value			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Non- Controlling Interests			Total Equity
Balance as of May 31, 2010		445.4		$	4.5		$	2,523.0		$	5,905.3		$	289.4		$	26.2		$	8,748.4
Total comprehensive income		-			-			-			2,514.6			420.8			1.5			2,936.9
Stock option exercises		1.2			-			20.3			-			-			-			20.3
Amortization of share based compensation		-			-			21.1			-			-			-			21.1
Contributions from Cargill, Inc.		-			-			18.5			-			-			-			18.5
Dividends ($0.20 per share)		-			-			-			(89.3	)		-			-			(89.3	)
Dividends for noncontrolling interests		-			-			-			-			-			(4.8	)		(4.8	)
Acquisition of noncontrolling interest		-			-			-			-			-			(2.6	)		(2.6	)
Tax benefits related to share based compensation		-			-			13.4			-			-			-			13.4
Balance as of May 31, 2011		446.6			4.5			2,596.3			8,330.6			710.2			20.3			11,661.9
Total comprehensive income (loss)		-			-			-			1,930.2			(332.2	)		(3.3	)		1,594.7
Stock option exercises / Restricted stocks units vested		0.2			-			3.0			-			-			-			3.0
Amortization of share based compensation		-			-			23.4			-			-			-			23.4
Repurchase of Class A common stock		(21.3	)		(0.2	)		(1,162.3	)		-			-			-			(1,162.5	)
Dividends ($0.275 per share)		-			-			-			(119.5	)		-			-			(119.5	)
Dividends for noncontrolling interests		-			-			-			-			-			(0.7	)		(0.7	)
Tax shortfall related to share based compensation		-			-			(0.9	)		-			-			-			(0.9	)
Balance as of May 31, 2012		425.5			4.3			1,459.5			10,141.3			378.0			16.3			11,999.4
Total comprehensive income (loss)		-			-			-			1,888.7			(51.6	)		2.4			1,839.5
Stock option exercises		0.3			-			6.0			-			-			-			6.0
Amortization of stock based compensation		-			-			28.2			-			-			-			28.2
Dividends ($1.00 per share)		-			-			-			(426.6	)		-			-			(426.6	)
Dividends for noncontrolling interests		-			-			-			-			-			(1.2	)		(1.2	)
Tax shortfall related to stock option exercises		-			-			(2.4	)		-			-			-			(2.4	)
Balance as of May 31, 2013		425.8		$	4.3		$	1,491.3		$	11,603.4		$	326.4		$	17.5		$	13,442.9

^(a)  On May 25, 2011, we retired our outstanding common stock and recapitalized into three classes: Common Stock, Class A Common Stock and Class B Common Stock in connection with the Cargill Transaction discussed in Note 2 of our Notes to Consolidated Financial Statements. There was no change in the number or value of shares outstanding.

See Accompanying Notes to Consolidated Financial Statements

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Notes to Consolidated Financial Statements

Tables in millions, except per share amounts

1. ORGANIZATION AND NATURE OF BUSINESS

The Mosaic Company (before or after the Cargill Transaction described in Note 2, “Mosaic”, and with its consolidated subsidiaries, “we”, “us”, “our”, or the “Company”) is the parent company of the business that was formed through the business combination (“Combination”) of IMC Global Inc. and the Cargill Crop Nutrition fertilizer businesses (“CCN”) of Cargill, Incorporated and its subsidiaries (collectively, “Cargill”) on October 22, 2004.

We produce and market concentrated phosphate and potash crop nutrients. We conduct our business through wholly and majority owned subsidiaries as well as businesses in which we own less than a majority or a non-controlling interest, including consolidated variable interest entities and investments accounted for by the equity method. We are organized into the following business segments:

Our Phosphates business segment owns and operates mines and production facilities in Florida which produce concentrated phosphate crop nutrients and phosphate-based animal feed ingredients, and processing plants in Louisiana which produce concentrated phosphate crop nutrients. In fiscal 2011, the Phosphates segment acquired a 35% economic interest in a joint venture that owns the Miski Mayo Mine in Peru.

Our Phosphates segment’s results also include our international distribution activities in addition to the consolidated results of Phosphate Chemicals Export Association, Inc. (“PhosChem”), a U.S. Webb-Pomerene Act association of phosphate producers that exports concentrated phosphate crop nutrient products around the world for us and PhosChem’s other member. Our share of PhosChem’s sales volume of dry phosphate crop nutrient products was approximately 93% for the year ended May 31, 2013.

Our Potash business segment owns and operates potash mines and production facilities in Canada and the U.S. which produce potash-based crop nutrients, animal feed ingredients and industrial products. Potash sales include domestic and international sales. We are a member of Canpotex, Limited (“Canpotex”), an export association of Canadian potash producers through which we sell our Canadian potash outside the U.S. and Canada.

Intersegment sales are eliminated within Corporate, Eliminations and Other. See Note 23 of our Notes to Consolidated Financial Statements for segment results.

2. CARGILL TRANSACTION

On May 25, 2011, we consummated the first in a series of transactions intended to result in the split-off and orderly distribution of Cargill’s approximately 64% equity interest in us through a series of public offerings (the “Cargill Transaction”). These transactions included the following:

• A Merger (the “Merger”) between a subsidiary of GNS II (U.S.) Corp. (“GNS”) and MOS Holdings Inc. (“MOS Holdings”) that had the effect of recapitalizing our prior Common Stock into three classes: Common Stock, Class A Common Stock and Class B Common Stock. The Common Stock is substantially identical to our prior Common Stock, and all three new classes had the same economic rights as our prior Common Stock. Holders of the Common Stock and the Class A Common Stock have one vote per share on all matters on which they are entitled to vote, whereas holders of the Class B Common Stock had ten votes per share solely for the election of directors and one vote per share on all other matters on which they were entitled to vote. The Class A Common Stock is and the Class B Common Stock was subject to transfer restrictions, have or had conversion rights and class voting rights, and are or were not publicly traded. Following the Merger, our Common Stock continues to trade under the ticker symbol MOS.

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• Prior to the Merger, GNS was a wholly-owned subsidiary of the company then known as The Mosaic Company. The Merger made GNS the parent company of MOS Holdings. In connection with the Merger, the company formerly known as The Mosaic Company was renamed MOS Holdings Inc. and GNS was renamed The Mosaic Company.

• In the Merger, a portion of our Common Stock held by Cargill was converted, on a one-for-one basis, into the right to receive Class A Common Stock and Class B Common Stock. Each other outstanding share of our prior Common Stock (including a portion of the shares of our prior Common Stock held by Cargill) was converted into the right to receive a share of our Common Stock.

• Cargill conducted a split-off (the “Split-off”) in which it exchanged 178.3 million of our shares that it received in the Merger for shares of Cargill stock held by certain Cargill stockholders (the “Exchanging Cargill Stockholders”). Immediately after the Split-off, the Exchanging Cargill Stockholders held approximately 40% of our total outstanding shares that represented approximately 82% of the total voting power with respect to the election of our directors.

• Cargill also exchanged the remaining 107.5 million of our shares that it received in the Merger with certain holders of Cargill debt (the “Exchanging Cargill Debt Holders”) for such Cargill debt (the “Debt Exchange”).

• Certain of the Exchanging Cargill Stockholders (the “MAC Trusts”) and the Exchanging Cargill Debt Holders (collectively, the “Selling Stockholders”) then sold an aggregate of 115.0 million shares of our Common Stock that they received in the Split-off and the Debt Exchange in an underwritten secondary public offering (the “Formation Offering”).

In fiscal 2011, Cargill reimbursed us for $18.5 million in the aggregate of fees and expenses we incurred in connection with the matters described above and negotiation of the Cargill Transaction; such reimbursement was recorded as a capital contribution in stockholders’ equity.

Pursuant to a ruling from the U.S. Internal Revenue Service, the Merger, Split-off and Debt Exchange were tax-free to Cargill, Mosaic and their respective stockholders.

In fiscal 2012, we completed several additional transactions in furtherance of the planned orderly distribution of our stock that the Exchanging Cargill Stockholders acquired from Cargill in the Split-off:

• On September 29, 2011, we converted 20.7 million shares of our Class A Common Stock, Series A-4, to Common Stock in connection with their sale in an underwritten public secondary offering by the MAC Trusts. In accordance with our Restated Certificate of Incorporation, each such converted share of Class A Common Stock, Series A-4, was subsequently retired and cancelled and may not be reissued, and the number of authorized shares of Class A Common Stock was reduced by a corresponding amount.

• On October 6, 2011, our stockholders approved the conversion of each of our approximately 113.0 million outstanding shares of Class B Common Stock on a one-for-one basis into shares of the corresponding series of Class A Common Stock. In accordance with our Restated Certificate of Incorporation, each such converted share of Class B Common Stock was subsequently retired and cancelled and may not be reissued, and the number of authorized shares of Class B Common Stock was reduced by a corresponding amount.

• On November 17, 2011, we purchased an aggregate 21.3 million shares of our Class A Common Stock, Series A-4, from the MAC Trusts. The purchase price was $54.58 per share, the closing price for our

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Common Stock on November 16, 2011, resulting in a total purchase price of approximately $1.2 billion. This repurchase completed the disposition of the 157.0 million shares designated to be sold during the 15-month period following the Split-off by the Selling Stockholders.

All other shares of our stock (approximately 128.8 million shares in the aggregate) received by the Exchanging Cargill Stockholders and not sold in the Formation Offering are generally subject to transfer restrictions and are to be released in three equal annual installments beginning on November 26, 2013, unless they are sold prior to the release date. In each of the calendar years 2013 through 2015, we would, at the request of the MAC Trusts or at our own election, register these shares for sale in an underwritten public secondary offering that could occur during the period May 26 through October 26. The maximum number of shares that may be included in each such offering is to be determined by the lead underwriter chosen by us for such offering.

Following May 23, 2016, the MAC Trusts will have two rights to request that we file a registration statement under the Securities Act of 1933, pursuant to which the MAC Trusts could sell any remaining shares they received in the Split-off.

Our agreements with Cargill and the Exchanging Cargill Stockholders also contain additional provisions relating to private and market sales under specified conditions.

We agreed that, among other things, and subject to certain exceptions:

• We would not engage in certain prohibited acts (“Prohibited Acts”) until May 26, 2013.

• We will indemnify Cargill for certain taxes and tax-related losses imposed on Cargill if we engaged in a Prohibited Act or in the event we are in breach of representations or warranties made in support of the tax-free nature of the Merger, Split-off and Debt Exchange, if our Prohibited Act or breach causes the Merger, Split-off and/or Debt Exchange to fail to qualify as tax-free transactions.

Generally speaking, Prohibited Acts included:

• Entering into any agreements, understandings, arrangements or substantial negotiations pursuant to which any person would acquire, increase or have the right to acquire or increase such person’s ownership interest in us, provided that equity issuances, redemptions or repurchases from the MAC Trusts and approvals of transfers within an agreed-upon “basket” were not Prohibited Acts.

• Approving or recommending a third-party tender offer or exchange offer for our stock or causing or permitting any merger, reorganization, combination or consolidation of Mosaic or MOS Holdings.

• Causing our “separate affiliated group” (as defined in the Internal Revenue Code) to fail to be engaged in the fertilizer business.

• Reclassifying, exchanging or converting any shares of our stock into another class or series, or changing the voting rights of any shares of our stock (other than the conversion of Class B Common Stock to Class A Common Stock) or declaring or paying a stock dividend in respect of our common stock.

• Facilitating the acquisition of Mosaic’s stock by any person or coordinating group (as defined in IRS regulations) (other than Cargill and its subsidiaries), if such acquisition would result in any person or coordinating group beneficially owning 10% or more of our outstanding Common Stock.

• Facilitating participation in management or operation of the Company (including by becoming a director) by a person or coordinating group (as defined in IRS regulations) (other than Cargill and its subsidiaries) who beneficially owns 5% or more of our outstanding Common Stock.

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The agreements relating to the Cargill Transaction continue to restrict our ability to engage in share buybacks (other than self-tender offers to all of our stockholders complying with Rule 13e-4 under the Securities Exchange Act of 1934). The restriction on share buybacks applies until November 26, 2013.

After May 26, 2013, we engaged in discussions with Cargill and the MAC Trusts regarding the disposition of the Class A Shares, including a potential share repurchase transaction. In connection with these discussions, we, with the MAC Trusts' support, requested that Cargill amend the Split-off agreement to allow for a negotiated repurchase of Class A Shares prior to November 26, 2013. After considering the request, Cargill declined to amend the agreement to allow for earlier share repurchases. As a result, we are not permitted to engage in open market or negotiated share repurchases until after November 26, 2013. The only practical means for holders of the Class A Shares to dispose of their shares prior to that date would be through an underwritten public secondary offering, which could only be initiated by the MAC Trusts prior to June 26, 2013 or by us thereafter. After considering their alternatives, the MAC Trusts notified us that they would not exercise their first right to request an underwritten public secondary offering, that would occur during the period May 26, 2013 through October 26, 2013. We look forward to initiating share repurchases after November 26, 2013. At that time, depending on market conditions and sellers' interest, we will consider the repurchase of shares either in a negotiated transaction with the holders of the Class A Shares or through open market repurchases.

3. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Statement Presentation and Basis of Consolidation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Throughout the Notes to Consolidated Financial Statements, amounts in tables are in millions of dollars except for per share data and as otherwise designated. References in this report to a particular fiscal year are to the twelve months ended May 31 of that year.

The accompanying Consolidated Financial Statements include the accounts of Mosaic and its majority owned subsidiaries, as well as the accounts of certain variable interest entities (“VIEs”) for which we are the primary beneficiary as described in Note 12. Certain investments in companies where we do not have control but have the ability to exercise significant influence are accounted for by the equity method.

Accounting Estimates

Preparation of the Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The more significant estimates made by management relate to the recoverability of non-current assets including goodwill, the useful lives and net realizable values of long-lived assets, environmental and reclamation liabilities including asset retirement obligations (“AROs”), the costs of our employee benefit obligations for pension plans and postretirement benefits, income tax related accounts including the valuation allowance against deferred income tax assets, Canadian resource tax and royalties, inventory valuation and accruals for pending legal and environmental matters. Actual results could differ from these estimates.

Revenue Recognition

Revenue on North American sales is recognized when the product is delivered to the customer and/or when the risks and rewards of ownership are otherwise transferred to the customer and when the price is fixed or determinable. Revenue on North American export sales is recognized upon the transfer of title to the customer and when the other revenue recognition criteria have been met, which generally occurs when product enters

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international waters. Revenue from sales originating outside of North America is recognized upon transfer of title to the customer based on contractual terms of each arrangement and when the other revenue recognition criteria have been met. Shipping and handling costs are included as a component of cost of goods sold.

Income Taxes

In preparing our Consolidated Financial Statements, we utilize the asset and liability approach in accounting for income taxes. We recognize income taxes in each of the jurisdictions in which we have a presence. For each jurisdiction, we estimate the actual amount of income taxes currently payable or receivable, as well as deferred income tax assets and liabilities attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

A valuation allowance is provided for those deferred tax assets for which it is more likely than not that the related tax benefits will not be realized. We evaluate our ability to realize the tax benefits associated with deferred tax assets by analyzing the relative impact of all the available positive and negative evidence regarding our forecasted taxable income using both historical and projected future operating results, the reversal of existing taxable temporary differences, taxable income in prior carry-back years (if permitted) and the availability of tax planning strategies. A valuation allowance will be recorded in each jurisdiction in which a deferred income tax asset is recorded when it is more likely than not that the deferred income tax asset will not be realized. Changes in deferred tax asset valuation allowances typically impact income tax expense.

We recognize excess tax benefits or shortfalls associated with share-based compensation in equity only when realized. When assessing whether excess tax benefits or shortfalls relating to share-based compensation have been realized, we follow the with-and-without approach excluding any indirect effects of the excess tax effects. Under this approach, excess tax benefits or shortfalls related to share-based compensation are generally not deemed to be realized until after the utilization of all other applicable tax benefits or shortfalls available to us.

Accounting for uncertain income tax positions is determined by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. This minimum threshold is that a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit to be recognized is measured as the largest amount of benefit that is greater than a fifty percent likelihood of being realized upon ultimate settlement. We recognize interest and penalties within our provision for income taxes on our Consolidated Statements of Earnings.

We have not recorded U.S. deferred income taxes on certain of our non-U.S. subsidiaries’ undistributed earnings as such amounts are intended to be reinvested outside of the United States indefinitely. However, should we change our business and tax strategies in the future and decide to repatriate a portion of these earnings to one of our U.S. subsidiaries, including cash maintained by these non-U.S. subsidiaries, additional tax liabilities would be incurred. It is not practical to estimate the amount of additional U.S. tax liabilities we would incur.

Canadian Resource Taxes and Royalties

We pay Canadian resource taxes consisting of the Potash Production Tax and resource surcharge. The Potash Production Tax is a Saskatchewan provincial tax on potash production and consists of a base payment and a profits tax. The profits tax is calculated on the potash content of each tonne sold from each Saskatchewan mine, net of certain operating expenses and a depreciation allowance. We also pay a percentage of the value of resource sales from our Saskatchewan mines. In addition to the Canadian resource taxes, royalties are payable to the mineral owners with respect to potash reserves or production of potash. These resource taxes and royalties are recorded in our cost of goods sold. Our Canadian resource tax and royalty expenses were $307.9 million, $327.1 million and $294.2 million for fiscal 2013, 2012 and 2011, respectively.

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Brazil Non-Income Taxes

We have approximately $80 million of assets recorded at May 31, 2013 related to PIS and Cofins, a value added tax, tax credits and income tax credits mostly earned in 2009 through 2013 that we believe will be realized through paying income taxes, paying other federal taxes, or receiving cash refunds. Should the Brazilian government determine these claims to not be warranted upon review, this could impact our results in such period. We presently believe that our positions are supported.

Foreign Currency Translation

The Company’s reporting currency is the U.S. dollar; however, for operations located in Canada and Brazil, the functional currency is the local currency. Assets and liabilities of these foreign operations are translated to U.S. dollars at exchange rates in effect at the balance sheet date, while income statement accounts and cash flows are translated to U.S. dollars at the average exchange rates for the period. For these operations, translation gains and losses are recorded as a component of accumulated other comprehensive income in equity until the foreign entity is sold or liquidated. Transaction gains and losses result from transactions that are denominated in a currency other than the functional currency of the operation, primarily accounts receivable in our Canadian entities denominated in U.S. dollars, and accounts payable in Brazil denominated in U.S. dollars. These foreign currency transaction gains and losses are presented separately in the Consolidated Statement of Earnings.

Cash and Cash Equivalents

Cash and cash equivalents include short-term, highly liquid investments with original maturities of 90 days or less, and other highly liquid investments that are payable on demand such as money market accounts, certain certificates of deposit and repurchase agreements. The carrying amount of such cash equivalents approximates their fair value due to the short-term and highly liquid nature of these instruments.

Concentration of Credit Risk

In the U.S., we sell our products to manufacturers, distributors and retailers primarily in the Midwest and Southeast. Internationally, our phosphate and potash products are sold primarily through two North American export associations. A concentration of credit risk arises from our sales and accounts receivable associated with the international sales of potash product through Canpotex. We consider our concentration risk related to the Canpotex receivable to be mitigated by their credit policy which requires the underlying receivables to be substantially insured or secured by letters of credit. As of May 31, 2013 and 2012, $191.8 million and $200.7 million, respectively, of accounts receivable were due from Canpotex. In fiscal 2013, 2012 and 2011, sales to Canpotex were $1.2 billion, $1.3 billion and $992.9 million, respectively.

Receivables and Allowance for Doubtful Accounts

Accounts receivable are recorded at face amount less an allowance for doubtful accounts. On a regular basis, we evaluate outstanding accounts receivable and establish the allowance for doubtful accounts based on a combination of specific customer circumstances as well as credit conditions and a history of write-offs and subsequent collections.

Included in other assets are long-term accounts receivable of $13.9 million and $16.9 million as of May 31, 2013 and 2012, respectively. In accordance with our allowance for doubtful accounts policy, we have recorded allowances against these long-term accounts receivable of $11.3 million and $13.5 million, respectively.

Inventories

Inventories of raw materials, work-in-process products, finished goods and operating materials and supplies are stated at the lower of cost or market. Costs for substantially all inventories are determined using the weighted average cost basis.

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Market value of our inventory is defined as forecasted selling prices less reasonably predictable selling costs (net realizable value). Significant management judgment is involved in estimating forecasted selling prices including various demand and supply variables. Examples of demand variables include grain and oilseed prices, stock-to-use ratios and changes in inventories in the crop nutrients distribution channels. Examples of supply variables include forecasted prices of raw materials, such as phosphate rock, sulfur, ammonia, and natural gas, estimated operating rates and industry crop nutrient inventory levels. Results could differ materially if actual selling prices differ materially from forecasted selling prices. Charges for lower of cost or market are recognized in our Consolidated Statements of Earnings in the period when there is evidence of a decline of market value below cost.

To determine the cost of inventory, we allocate fixed expense to the costs of production based on the normal capacity, which refers to a range of production levels and is considered the production expected to be achieved over a number of periods or seasons under normal circumstances, taking into account the loss of capacity resulting from planned maintenance. Fixed overhead costs allocated to each unit of production should not increase due to abnormally low production. Those excess costs are recognized as a current period expense. When a production facility is completely shut down temporarily, it is considered “idle”, and all related expenses are charged to cost of goods sold.

Property, Plant and Equipment

Property, plant and equipment are stated at cost. Costs of significant assets include capitalized interest incurred during the construction and development period. Repairs and maintenance, including planned major maintenance and plan turnaround costs, are expensed when incurred.

Depletion expenses for mining operations, including mineral reserves, are generally determined using the units-of-production method based on estimates of recoverable reserves. Depreciation is computed principally using the straight-line method over the following useful lives: machinery and equipment three to 25 years, and buildings and leasehold improvements three to 40 years.

We estimate initial useful lives based on experience and current technology. These estimates may be extended through sustaining capital programs. Factors affecting the fair value of our assets may also affect the estimated useful lives of our assets and these factors can change. Therefore, we periodically review the estimated remaining lives of our facilities and other significant assets and adjust our depreciation rates prospectively where appropriate.

Leases

Leases in which the risk of ownership is retained by the lessor are classified as operating leases. Leases which substantially transfer all of the benefits and risks inherent in ownership to the lessee are classified as capital leases. Assets acquired under capital leases are depreciated on the same basis as property, plant and equipment. Rental payments are expensed on a straight-line basis. Leasehold improvements are depreciated over the depreciable lives of the corresponding fixed assets or the related lease term, whichever is shorter.

Investments

Except as discussed in Note 12 of our Notes to Consolidated Financial Statements, with respect to variable interest entities, investments in the common stock of affiliated companies in which our ownership interest is 50% or less and in which we exercise significant influence over operating and financial policies are accounted for using the equity method which includes eliminating the effects of any material intercompany transactions. The cash flow presentation of dividends received from equity method investees is determined by evaluation of the facts, circumstances and nature of the distribution.

Recoverability of Long-Lived Assets

Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. The carrying amount of a long-lived asset group is not recoverable if it

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exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset group. If it is determined that an impairment loss has occurred, the loss is measured as the amount by which the carrying amount of the long-lived asset group exceeds its fair value.

Goodwill

Goodwill is carried at cost, not amortized, and represents the excess of the purchase price and related costs over the fair value assigned to the net identifiable assets of a business acquired. We test goodwill for impairment at the reporting unit level on an annual basis or upon the occurrence of events that may indicate possible impairment. When testing goodwill for impairment, the Company may first assess qualitative factors. If an initial qualitative assessment identifies that it is more likely than not that the carrying value of a reporting unit exceeds its estimated fair value, additional quantitative testing is performed in two phases. The first step compares the fair value of the reporting unit with its carrying amount, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. However, if the carrying amount of the reporting unit exceeds its fair value, the implied fair value of the reporting unit’s goodwill would be compared with the carrying amount of that goodwill. An impairment loss would be recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. The Company may also elect not to perform the qualitative assessment and proceed directly to the quantitative testing. We have established the second quarter of our fiscal year as the period for our annual test for impairment of goodwill and the test resulted in no impairment in the periods presented.

Environmental Costs

Accruals for estimated costs are recorded when environmental remediation efforts are probable and the costs can be reasonably estimated. In determining these accruals, we use the most current information available, including similar past experiences, available technology, consultant evaluations, regulations in effect, the timing of remediation and cost-sharing arrangements.

Asset Retirement Obligations

We recognize AROs in the period in which we have an existing legal obligation associated with the retirement of a tangible long-lived asset, and the amount of the liability can be reasonably estimated. The ARO is recognized at fair value when the liability is incurred. Upon initial recognition of a liability, that cost is capitalized as part of the related long-lived asset and depreciated on a straight-line basis over the remaining estimated useful life of the related asset. The liability is adjusted in subsequent periods through accretion expense which represents the increase in the present value of the liability due to the passage of time. Such depreciation and accretion expenses are included in cost of goods sold for operating facilities and other operating expense for indefinitely closed facilities.

Litigation

We are involved from time to time in claims and legal actions incidental to our operations, both as plaintiff and defendant. We have established what we currently believe to be adequate accruals for pending legal matters. These accruals are established as part of an ongoing worldwide assessment of claims and legal actions that takes into consideration such items as advice of legal counsel, individual developments in court proceedings, changes in the law, changes in business focus, changes in the litigation environment, changes in opponent strategy and tactics, new developments as a result of ongoing discovery, and past experience in defending and settling similar claims. The litigation accruals at any time reflect updated assessments of the then-existing claims and legal actions. The final outcome or potential settlement of litigation matters could differ materially from the accruals which we have established. For significant individual cases, we accrue legal costs expected to be incurred.

Pension and Other Postretirement Benefits

Mosaic offers a number of benefit plans that provide pension and other benefits to qualified employees. These plans include defined benefit pension plans, supplemental pension plans, defined contribution plans and other postretirement benefit plans.

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We accrue the funded status of our plans, which is representative of our obligations under employee benefit plans and the related costs, net of plan assets measured at fair value. The cost of pensions and other retirement benefits earned by employees is generally determined with the assistance of an actuary using the projected benefit method prorated on service and management’s best estimate of expected plan investment performance, salary escalation, retirement ages of employees and expected healthcare costs.

Share-Based Compensation

We measure the cost of employees’ services received in exchange for an award of equity instruments based on grant-date fair value of the award, and recognize the cost over the period during which the employee is required to provide service in exchange for the award. Our granted awards consist of stock options that generally vest annually in equal amounts over a three-year period and have an exercise price equal to the fair market value of our common stock on the date of grant, restricted stock units that generally cliff vest after three years and have a fair value equal to the market price of our stock at the date of grant and performance units that vest after a three-year period and are recorded at their fair value at the grant date. We recognize compensation expense for awards on a straight-line basis over the requisite service period.

Derivative Activities

We periodically enter into derivatives to mitigate our exposure to foreign currency risks and the effects of changing commodity and freight prices. We record all derivatives on the Consolidated Balance Sheets at fair value. The fair value of these instruments is determined by using quoted market prices, third party comparables, or internal estimates. We net our derivative asset and liability positions when we have a master netting arrangement in place. Changes in the fair value of the foreign currency, commodity, and freight derivatives are immediately recognized in earnings because we do not apply hedge accounting treatment to these instruments.

4. OTHER FINANCIAL STATEMENT DATA

The following provides additional information concerning selected balance sheet accounts:

	May 31,
(in millions)	2013		2012
Receivables
Trade	$	933.9	$	706.9
Non-trade		86.5		49.6
		1,020.4		756.5
Less allowance for doubtful accounts		4.7		4.9
	$	1,015.7	$	751.6
Inventories
Raw materials	$	43.0	$	61.8
Work in process		445.8		340.1
Finished goods		991.3		764.8
Operating materials and supplies		77.2		70.9
	$	1,557.3	$	1,237.6
Other current assets
Final price deferred(a)	$	137.1	$	152.8
Income and other taxes receivable		267.6		214.0
Prepaid expenses		98.2		132.1
Other		31.8		44.2
	$	534.7	$	543.1

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	May 31,
(in millions)	2013		2012
Accrued liabilities
Non-income taxes	$	81.1	$	78.5
Payroll and employee benefits		146.6		119.6
Asset retirement obligations		83.5		87.0
Customer prepayments		243.3		323.0
Other		290.6		291.8
	$	845.1	$	899.9
Other noncurrent liabilities
Asset retirement obligations	$	575.0	$	513.3
Accrued pension and postretirement benefits		140.7		142.2
Unrecognized tax benefits		45.2		159.7
Other		146.3		160.2
	$	907.2	$	975.4

(a) Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon. This has not been included in inventory as it is not held for sale.

Interest expense, net was comprised of the following in fiscal 2013, 2012 and 2011:

	Years ended May 31,
(in millions)	2013		2012		2011
Interest income	$	18.8	$	20.1	$	22.5
Less interest expense		-		1.4		27.6
Interest income (expense), net	$	18.8	$	18.7	$	(5.1	)

5. RECENTLY ISSUED ACCOUNTING GUIDANCE

Recently Adopted Accounting Pronouncements

In June 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2011-05, “Comprehensive Income (Topic 220): Presentation of Comprehensive Income” which requires comprehensive income to be reported in either a single statement or in two consecutive statements reporting net income and other comprehensive income. The amendment does not change what items are reported in other comprehensive income. Additionally, in December 2011, the FASB issued ASU No. 2011-12, “Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05” which indefinitely defers the requirement in ASU No. 2011-05 to present reclassification adjustments out of accumulated other comprehensive income by component in both the statement in which net income is presented and the statement in which other comprehensive income is presented. During the deferral period, the existing requirements in U.S. GAAP for the presentation of reclassification adjustments must continue to be followed. These standards became effective for our fiscal quarter beginning June 1, 2012, and did not have an impact on our results of operations or financial position.

In September 2011, the FASB issued ASU No. 2011-08, “Intangibles – Goodwill and Other (Topic 350): Testing for Goodwill Impairment” which permits an entity to first assess qualitative factors to determine whether it is

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more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test described in Topic 350. We adopted this guidance for our annual goodwill impairment test for fiscal 2013, which was conducted in the second quarter. The adoption of this guidance did not have an impact on our results of operations or financial position.

Pronouncements Issued But Not Yet Adopted

In December 2011, the FASB issued ASU No. 2011-11, “Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities” which enhances current disclosures about financial instruments and derivative instruments that are either offset on the statement of financial position or subject to an enforceable master netting arrangement or similar agreement, irrespective of whether they are offset on the statement of financial position. Entities are required to provide both net and gross information for these assets and liabilities in order to facilitate comparability between financial statements prepared on the basis of U.S. GAAP and those prepared on the basis of International Financial Reporting Standards (“IFRS”). In January 2013, the FASB issued ASU No. 2013-01, “Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities” to limit the scope of the new balance sheet offsetting disclosures to derivatives, repurchase agreements, and securities lending transactions to the extent that they are offset in the financial statements or subject to an enforceable master netting arrangement or similar agreement. These standards will be effective for us beginning June 1, 2013 with retrospective application required. As these standards address disclosure requirements only, we do not believe their adoption will have a material impact on our results of operations or financial position.

In February 2013, the FASB issued ASU No. 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income” which requires entities to disclose additional information about changes in and significant items reclassified out of accumulated other comprehensive income. This guidance is effective for us beginning June 1, 2013. As this standard addresses presentation and disclosure requirements only, we do not believe its adoption will have a material impact on our results of operations or financial position.

6. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consist of the following:

	May 31,
(in millions)	2013		2012
Land	$	188.7	$	187.7
Mineral properties and rights		2,886.7		2,791.0
Buildings and leasehold improvements		1,959.3		1,456.0
Machinery and equipment		5,793.7		4,872.6
Construction in-progress		1,419.2		1,522.8
		12,247.6		10,830.1
Less: accumulated depreciation and depletion		3,760.8		3,284.2
	$	8,486.8	$	7,545.9

Depreciation and depletion expense was $604.8 million, $508.1 million and $447.4 million for fiscal 2013, 2012 and 2011, respectively. Capitalized interest on major construction projects was $52.0 million, $55.7 million and $57.1 million in fiscal 2013, 2012 and 2011, respectively.

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7. EARNINGS PER SHARE

The numerator for diluted earnings per share (“EPS”) is net earnings. The denominator for basic EPS is the weighted-average number of shares outstanding during the period. The denominator for diluted EPS also includes the weighted average number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued unless the shares are anti-dilutive.

The following is a reconciliation of the numerator and denominator for the basic and diluted EPS computations:

	Years ended May 31,
(in millions)	2013		2012		2011
Net earnings attributable to Mosaic	$	1,888.7	$	1,930.2	$	2,514.6
Basic weighted average common shares outstanding		425.7		435.2		446.0
Dilutive impact of share-based awards		1.2		1.3		1.5
Diluted weighted average common shares outstanding		426.9		436.5		447.5
Basic net earnings per share attributable to Mosaic	$	4.44	$	4.44	$	5.64
Diluted net earnings per share attributable to Mosaic	$	4.42	$	4.42	$	5.62

A total of 0.6 million shares, 0.5 million shares and 0.4 million shares of common stock subject to issuance upon exercise of stock options for fiscal 2013, 2012 and 2011, respectively, have been excluded from the calculation of diluted EPS because the effect would be anti-dilutive.

8. CASH FLOW INFORMATION

Supplemental disclosures of cash paid for interest and income taxes and non-cash investing and financing information is as follows:

	Years Ended May 31,
(in millions)	2013		2012		2011
Cash paid during the period for:
Interest	$	52.0	$	76.7	$	100.2
Less amount capitalized		52.0		55.7		57.1
Cash interest, net	$	-	$	21.0	$	43.1
Income taxes	$	299.9	$	516.4	$	535.2

Acquiring or constructing property, plant and equipment by incurring a liability does not result in a cash outflow for us until the liability is paid. In the period the liability is incurred, the change in operating accounts payable on the Consolidated Statements of Cash Flows is adjusted by such amount. In the period the liability is paid, the amount is reflected as a cash outflow from investing activities. The applicable net change in operating accounts payable that was classified to investing activities on the Consolidated Statements of Cash Flows was $54.6 million, $56.7 million, and $100.1 million for fiscal 2013, 2012 and 2011 respectively.

9. INVESTMENTS IN NON-CONSOLIDATED COMPANIES

We have investments in various international and domestic entities and ventures. The equity method of accounting is applied to such investments when the ownership structure prevents us from exercising a controlling

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influence over operating and financial policies of the businesses but still allow us to have significant influence. Under this method, our equity in the net earnings or losses of the investments is reflected as equity in net earnings of non-consolidated companies on our Consolidated Statements of Earnings. The effects of material intercompany transactions with these equity method investments are eliminated, including the gross profit on sales to and purchases from our equity-method investments which is deferred until the time of sale to the final third party customer.

A summary of our equity-method investments, which were in operation as of May 31, 2013, is as follows:

Entity	Economic Interest
Gulf Sulphur Services LTD., LLLP		50.0	%
River Bend Ag, LLC		50.0	%
IFC S.A.		45.0	%
Yunnan Three Circles Sinochem Cargill Fertilizers Co. Ltd.		35.0	%
Miski Mayo Mine		35.0	%
Canpotex		43.0	%

The summarized financial information shown below includes all non-consolidated companies carried on the equity method.

	May 31,
(in millions)	2013		2012		2011
Net sales	$	4,475.2	$	4,938.4	$	4,061.7
Net earnings		67.5		97.9		0.5
Mosaic’s share of equity in net earnings (loss)		18.3		13.3		(5.0	)
Total assets		1,841.4		1,776.0		1,690.6
Total liabilities		1,149.8		1,005.0		1,022.5
Mosaic’s share of equity in net assets		256.4		282.8		247.2

The difference between our share of equity in net assets as shown in the above table and the investment in non-consolidated companies as shown on the Consolidated Balance Sheets is due to an excess amount paid over the book value of the Miski Mayo Mine. The excess relates to phosphate rock reserves adjusted to fair value in relation to the Miski Mayo Mine. The excess amount is amortized over the estimated life of the phosphate rock reserve and is net of related deferred income taxes.

During fiscal 2011, we sold our 20.1% minority stake in Fosfertil, a phosphate crop nutrient producer in Brazil. Gross proceeds of $1.0 billion were received which resulted in a pre-tax gain of $685.6 million. The tax impact of this transaction was $116.2 million and was included in our provision for income taxes as of May 31, 2011.

On March 19, 2013, we entered into a Heads of Agreement with Saudi Arabian Mining Company (“Ma’aden”) and Saudi Basic Industries Corporation (“SABIC”) to from a joint venture (the “Northern Promise Joint Venture”) that would develop a phosphate rock mine and chemical complexes in the Kingdom of Saudi Arabia. The Northern Promise Joint Venture is presently expected to produce phosphate fertilizers, animal feed, food grade purified phosphoric acid and sodium tripolyphosphate. The approximately $7 billion greenfield project is expected to be financed by the joint venture with debt and the investments of the parties, and have a production capacity of approximately 3.5 million tonnes of finished product. Operations are expected to commence in late calendar 2016. We expect to have a 25% interest in the joint venture which will be accounted for in our financial statements as an equity-method investment.

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In connection with our equity share, we expect that we will market approximately 25% of the production of the joint venture. Subject to final financing terms, our cash investment would be up to $1 billion, funded over a four-year period beginning in calendar 2013. As of May 31, 2013, we have invested $15 million. The joint venture’s final financing arrangements are expected to include commitments by the shareholders to fund, on a limited basis, certain construction cost overruns and provide guarantees of financing through the construction phase of the project.

10. GOODWILL

The changes in the carrying amount of goodwill, by reporting unit, for the years ended May 31, 2013 and 2012, are as follows:

(in millions)	Phosphates		Potash		Total
Balance as of May 31, 2011	$	534.7	$	1,295.1	$	1,829.8
Foreign currency translation and other		11.9		2.7		14.6
Balance as of May 31, 2012		546.6		1,297.8		1,844.4
Foreign currency translation		-		0.2		0.2
Balance as of May 31, 2013	$	546.6	$	1,298.0	$	1,844.6

As of May 31, 2013, $151.6 million of goodwill was tax deductible.

11. FINANCING ARRANGEMENTS

Mosaic Credit Facility

As of May 31, 2013, Mosaic and MOS Holdings are co-borrowers under an unsecured five-year revolving credit facility of up to $750 million (the “Mosaic Credit Facility”), which is intended to serve as our primary senior unsecured bank credit facility to meet the combined liquidity needs of all of our business segments. The maturity date of the Mosaic Credit Facility is April 26, 2016.

The obligations under the Mosaic Credit Facility are guaranteed by our subsidiaries which own and operate our domestic distribution activities, domestic phosphate rock mines and concentrated phosphates production facilities, our Carlsbad, New Mexico potash mine, and our potash mines at Belle Plaine and Colonsay, Saskatchewan, Canada. The Mosaic Credit Facility has cross-default provisions that, in general, provide that a failure to pay principal or interest under any one item of other indebtedness in excess of $50 million or $75 million for multiple items of other indebtedness, or breach or default under such indebtedness that permits the holders thereof to accelerate the maturity thereof, will result in a cross-default.

The Mosaic Credit Facility requires Mosaic to maintain certain financial ratios, including a maximum ratio of Total Debt to EBITDA (as defined) of 3.0 to 1.0 as well as a minimum Interest Coverage Ratio (as defined) of not less than 3.5 to 1.0.

The Mosaic Credit Facility also contains other events of default and covenants that limit various matters. These events of default include limitations on indebtedness, liens, investments and acquisitions (other than capital expenditures), certain mergers, certain asset sales of the borrowers and the guarantors and other matters customary for credit facilities of this nature.

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Short-Term Debt

Short-term debt consists of the revolving credit facility under the Mosaic Credit Facility, under which there were no borrowings as of May 31, 2013 and 2012, and various other short-term borrowings related to our international distribution activities. These short-term borrowings outstanding were $68.7 million as of May 31, 2013, are denominated in various currencies and bear interest at rates between 0.45% and 20.5% and mature at various dates.

We had outstanding letters of credit that utilized a portion of the amount available for revolving loans under the Mosaic Credit Facility of $12.7 million and $20.1 million as of May 31, 2013 and 2012, respectively. The net available borrowings for revolving loans under the Mosaic Credit Facility as of May 31, 2013 and 2012 were approximately $737.3 million and $729.9 million, respectively. Unused commitment fees under the Mosaic Credit Facility accrued at an annual rate of 0.20% in fiscal 2013 and 0.21% in fiscal 2012, generating expenses of $1.5 million and $1.6 million, respectively.

We had additional outstanding letters of credit of $9.0 million as of May 31, 2013.

Long-Term Debt, including Current Maturities

We have senior notes outstanding, consisting of $450 million aggregate principal amount of 3.750% senior notes due 2021 and $300 million aggregate principal amount of 4.875% Senior Notes due 2041 (collectively, the “Senior Notes”).

The Senior Notes are Mosaic’s senior unsecured obligations and rank equally in right of payment with Mosaic’s existing and future senior unsecured indebtedness. The indenture governing the Senior Notes contains restrictive covenants limiting debt secured by liens, sale and leaseback transactions and mergers, consolidations and sales of substantially all assets as well as other events of default.

Two debentures, issued by Mosaic Global Holdings, Inc., one of our consolidated subsidiaries, the first due in 2018 (the “2018 Debentures”) and the second due in 2028 (the “2028 Debentures”) remain outstanding with amounts of $89.0 million and $147.1 million, respectively, as of May 31, 2013. The indentures governing the 2018 Debentures and the 2028 Debentures also contain restrictive covenants limiting debt secured by liens, sale and leaseback transactions and mergers, consolidations and sales of substantially all assets as well as events of default. The obligations under the 2018 Debentures and the 2028 Debentures are guaranteed by several of the Company’s subsidiaries.

Long-term debt primarily consists of term loans, industrial revenue bonds, secured notes, unsecured notes, and unsecured debentures. Long-term debt as of May 31, 2013 and 2012, respectively, consisted of the following:

(in millions)	May 31, 2013 Stated Interest Rate	May 31, 2013 Effective Interest Rate			Maturity Date		May 31, 2013 Stated Value		Combination Fair Market Value Adjustment		Discount on Notes Issuance			May 31, 2013 Carrying Value		May 31, 2012 Stated Value		Combination Fair Market Value Adjustment		Discount on Notes Issuance			May 31, 2012 Carrying Value
Industrial revenue and recovery zone bonds	1.53%		1.53	%		2040	$	17.4	$	-	$	-		$	17.4	$	17.6	$	-	$	-		$	17.6
Unsecured notes	3.75% - 4.88%		4.30	%		2021 - 2041		750.0		-		(7.4	)		742.6		750.0		-		(8.1	)		741.9
Unsecured debentures	7.30% - 7.38%		7.08	%		2018 - 2028		236.1		3.3		-			239.4		236.1		3.7		-			239.8
Other	5.50% - 9.00%		7.70	%		2014 - 2017		11.1		-		-			11.1		11.2		-		-			11.2
Total long-term debt								1,014.6		3.3		(7.4	)		1,010.5		1,014.9		3.7		(8.1	)		1,010.5
Less current portion								1.3		0.3		(0.7	)		0.9		0.9		0.3		(0.7	)		0.5
Total long-term debt, less current maturities							$	1,013.3	$	3.0		(6.7	)	$	1,009.6	$	1,014.0	$	3.4		(7.4	)	$	1,010.0

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Scheduled maturities of long-term debt are as follows for the periods ending May 31:

(in millions)
2014	$	0.9
2015		0.6
2016		7.0
2017		1.5
2018		-
Thereafter		1,000.5
Total	$	1,010.5

12. VARIABLE INTEREST ENTITIES

Mosaic is the primary beneficiary of and consolidates two variable interest entities (“VIE’s”) within our Phosphates segment: PhosChem and South Fort Meade Partnership, L.P. (“SFMP”). We determine whether we are the primary beneficiary of an entity subject to consolidation based on a qualitative assessment of the purpose and design of the VIE, the risks that the VIE were designed to create and pass along to other entities, the activities of the VIE that could be directed and which entity could direct them, and the expected relative impact of those activities on the economic performance of the VIE. We assess our VIE determination with respect to an entity on an ongoing basis. We have not identified any additional VIEs in which we hold a significant interest.

PhosChem is an export association of United States phosphate producers that markets our phosphate products internationally. We, along with the other member, are, subject to certain conditions and exceptions, contractually obligated to reimburse PhosChem for our respective pro rata share of any operating expenses or other liabilities. PhosChem had net sales of $1.3 billion, $2.4 billion and $2.3 billion for the years ended May 31, 2013, 2012 and 2011, respectively, which are included in our consolidated net sales. PhosChem currently funds its operations through ongoing sales receipts.

We determined that, because we are PhosChem’s exclusive export agent for the marketing, solicitation of orders and freighting of dry phosphatic materials, we have the power to direct the activities that most significantly impact PhosChem’s economic performance. Because Mosaic accounts for the majority of sales volume marketed through PhosChem, we have the obligation to absorb losses or right to receive benefits that could be significant to PhosChem.

SFMP owns the mineable acres at our South Fort Meade phosphate mine. We have a long-term mineral lease with SFMP which, in general, expires on the earlier of: (i) December 31, 2025, or (ii) the date that we have completed mining and reclamation obligations associated with the leased property. In addition to lease payments, we pay SFMP a royalty on each tonne mined and shipped from the areas that we lease. SFMP had no external sales in fiscal 2013, 2012 and 2011.

We determined that, because we control the day-to-day mining decisions and are responsible for obtaining mining permits, we have the power to direct the activities that most significantly impact SFMP’s economic performance. Because of our guaranteed rental and royalty payments to the partnership, we have the obligation to absorb losses or right to receive benefits that could potentially be significant to SFMP.

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No additional financial or other support has been provided to these VIE’s beyond what was previously contractually required during any periods presented. The carrying amounts and classification of assets and liabilities included in our Consolidated Balance Sheets for these consolidated entities are as follows:

(in millions)	May 31, 2013		May 31, 2012
Current assets	$	180.7	$	138.6
Noncurrent assets		46.9		49.4
Total assets	$	227.6	$	188.0
Current liabilities	$	5.4	$	39.6
Noncurrent liabilities		-		-
Total liabilities	$	5.4	$	39.6

13. INCOME TAXES

The provision for income taxes for the years ended May 31 consisted of the following:

(in millions)	2013			2012		2011
Current:
Federal	$	138.8		$	314.5	$	134.9
State		42.5			61.0		52.0
Non-U.S.		81.5			77.0		380.1
Total current		262.8			452.5		567.0
Deferred:
Federal		(32.9	)		7.4		99.2
State		(14.1	)		9.0		7.0
Non-U.S.		125.2			242.5		79.6
Total deferred		78.2			258.9		185.8
Provision for income taxes	$	341.0		$	711.4	$	752.8

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The components of earnings from consolidated companies before income taxes, and the effects of significant adjustments to tax computed at the federal statutory rate, were as follows:

(in millions)	2013			2012			2011
United States earnings	$	1,158.1		$	1,412.7		$	1,477.5
Non-U.S. earnings		1,056.4			1,216.2			1,793.8
Earnings from consolidated companies before income taxes	$	2,214.5		$	2,628.9		$	3,271.3
Computed tax at the U.S. federal statutory rate of 35%		35.0	%		35.0	%		35.0	%
State and local income taxes, net of federal income tax benefit		1.6	%		1.6	%		1.3	%
Percentage depletion in excess of basis		(7.1	%)		(6.6	%)		(4.5	%)
Impact of non-U.S. earnings		(10.2	%)		(2.9	%)		(7.5	%)
Change in valuation allowance		(3.6	%)		0.4	%		0.5	%
Other items (none in excess of 5% of computed tax)		(0.3	%)		(0.4	%)		(1.8	%)
Effective tax rate		15.4	%		27.1	%		23.0	%

The fiscal 2013 effective tax rate reflects a decrease of $179.3 million due to the resolution of certain tax matters which is included in the impact of non-U.S. earnings above.

The fiscal 2011 effective tax rate reflects a $116.2 million expense related to the sale of our investment in Fosfertil, and our Cubatão, Brazil, facility to Vale S.A. and its subsidiaries.

We have no intention of remitting certain undistributed earnings of non-U.S. subsidiaries aggregating $2.7 billion as of May 31, 2013, and accordingly, no deferred tax liability has been established relative to these earnings. The calculation of the unrecognized deferred tax liability related to these earnings is complex and is not practicable.

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Significant components of our deferred tax liabilities and assets as of May 31 were as follows:

(in millions)	2013			2012
Deferred tax liabilities:
Depreciation and amortization	$	956.2		$	761.6
Depletion		427.2			465.4
Partnership tax bases differences		104.0			105.4
Undistributed earnings of non-U.S. subsidiaries		215.8			215.8
Other liabilities		227.8			91.9
Total deferred tax liabilities	$	1,931.0		$	1,640.1
Deferred tax assets:
Alternative minimum tax credit carryforwards	$	63.1		$	88.1
Capital loss carryforwards		6.9			7.1
Foreign tax credit carryforwards		528.0			529.7
Net operating loss carryforwards		158.6			168.8
Pension plans and other benefits		52.1			54.2
Asset retirement obligations		237.6			220.2
Other assets		218.2			190.3
Subtotal		1,264.5			1,258.4
Valuation allowance		93.6			180.2
Net deferred tax assets		1,170.9			1,078.2
Net deferred tax liabilities	$	(760.1	)	$	(561.9	)

We have certain entities that are taxed in both their local currency jurisdiction and the U.S. As a result, we have deferred tax balances for both jurisdictions. As of May 31, 2013 and 2012, these deferred taxes are offset by approximately $380.1 million and $377.8 million, respectively, of anticipated foreign tax credits included within our depreciation and depletion components of deferred tax liabilities above.

As of May 31, 2013, we had estimated carryforwards for tax purposes as follows: alternative minimum tax credits of $63.1 million, net operating losses of $457.7 million, capital losses of $18.9 million, and foreign tax credits of $528.0 million. These carryforward benefits may be subject to limitations imposed by the Internal Revenue Code and in certain cases provisions of foreign law. The alternative minimum tax credit carryforwards can be carried forward indefinitely. The majority of our net operating loss carryforwards relate to Brazil and can be carried forward indefinitely but are limited to 30 percent of taxable income each year. The foreign tax credits have an expiration date of calendar 2018. The realization of our foreign tax credit carryforwards could be impacted by market conditions, the resolution of uncertain tax positions, and other business decisions and outcomes. We will need certain types of taxable income totaling approximately $4 billion in the U.S. between calendar 2013 and calendar 2018 to fully utilize our foreign tax credit carryforwards.

Valuation Allowance

For fiscal 2013, the valuation allowance decreased $86.6 million primarily due to our determination that the valuation allowance against certain non-U.S. deferred tax assets recorded in prior fiscal years could be reduced. This valuation allowance reduction relates to a non-U.S. entity that is taxed in both the local jurisdiction and the U.S. As a result, the decrease in the valuation allowance is offset by the recognition of a corresponding U.S. deferred tax liability associated with the anticipated reduction in foreign tax credits and, therefore, did not impact our tax expense in 2013.

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For fiscal 2012 and 2011, the valuation allowance decreased $29.0 million and increased $52.1 million, respectively.

In assessing the need for a valuation allowance, we consider whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of certain types of future taxable income during the periods in which those temporary differences become deductible. In making this assessment, we consider the scheduled reversal of deferred tax liabilities, our ability to carry back the deferred tax asset, projected future taxable income, and tax planning strategies.

Uncertain Tax Positions

As of May 31, 2013, we had $316.8 million of gross uncertain tax positions. If recognized, approximately $106.4 million of that amount would affect our effective tax rate in future periods. We recorded a gross decrease of $187.7 million associated with our non-U.S. subsidiaries due to the resolution of certain tax matters, of which $179.3 million impacted our effective tax rate. It is reasonably possible that the amount of gross unrecognized tax benefits will decrease in the next twelve months by approximately $30 million associated with our non-U.S. subsidiaries due to the expected resolution of a treaty-based process. The difference between the resolution’s outcome and what we have recorded as an unrecognized tax benefit may result in an expense; however, an estimate of the impact to the effective tax rate cannot reasonably be made. It is expected that there will be additional changes to the amount of uncertain tax positions in the next twelve months; however, additional changes cannot reasonably be estimated.

	May 31,
(in millions)	2013			2012
Gross unrecognized tax benefits, beginning of year	$	476.9		$	263.5
Gross increases:
Prior year tax positions		7.7			103.1
Current year tax positions		36.6			146.9
Gross decreases:
Prior year tax positions		(204.3	)		(34.8	)
Currency translation		(0.1	)		(1.8	)
Gross unrecognized tax benefits, end of year	$	316.8		$	476.9

We recognize interest and penalties related to unrecognized tax benefits as a component of our income tax expense. Interest and penalties accrued in our Consolidated Balance Sheets as of May 31, 2013 and May 31, 2012 are $53.8 million and $52.0 million, respectively, and are included in other noncurrent liabilities in the Consolidated Balance Sheets.

We operate in multiple tax jurisdictions, both within the United States and outside the United States, and face audits from various tax authorities regarding transfer pricing, deductibility of certain expenses, and intercompany transactions, as well as other matters. With few exceptions, we are no longer subject to examination for tax years prior to 2001.

We are currently under audit by the U.S. Internal Revenue Service for fiscal 2011 and 2012 and by the Canada Revenue Agency for fiscal 2001 to 2011. Based on the information available, we do not anticipate significant changes to our unrecognized tax benefits as a result of these examinations.

The Company has entered into a tax treaty-based process to resolve certain multi-jurisdictional uncertain income tax matters. An unfavorable resolution of those matters could impact our ability to utilize our foreign tax credit carryforward and affect the amount of undistributed earnings of non-U.S. subsidiaries for which we have not recognized a deferred tax liability.

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During the second quarter of fiscal 2013, the Internal Revenue Service concluded its audit for fiscal 2009 and 2010.

14. ACCOUNTING FOR ASSET RETIREMENT OBLIGATIONS

We recognize AROs in the period in which we have an existing legal obligation associated with the retirement of a tangible long-lived asset, and the amount of the liability can be reasonably estimated. The ARO is recognized at fair value when the liability is incurred with a corresponding increase in the carrying amount of the related long lived asset. We depreciate the tangible asset over its estimated useful life. Our legal obligations related to asset retirement require us to: (i) reclaim lands disturbed by mining as a condition to receive permits to mine phosphate ore reserves; (ii) treat low pH process water in phosphogypsum management systems (the “Gypstacks”) to neutralize acidity; (iii) close and monitor Gypstacks at our Florida and Louisiana facilities at the end of their useful lives; (iv) remediate certain other conditional obligations; (v) remove all surface structures and equipment, plug and abandon mine shafts, contour and revegetate, as necessary, and monitor for five years after closing our Carlsbad, New Mexico facility and (vi) decommission facilities, manage tailings and execute site reclamation at our Saskatchewan potash mines at the end of their useful lives. The estimated liability for these legal obligations is based on the estimated cost to satisfy the above obligations which is discounted using a credit-adjusted risk-free rate.

A reconciliation of our AROs is as follows:

	May 31,
(in millions)	2013			2012
AROs, beginning of year	$	600.3		$	573.1
Liabilities incurred		38.7			27.8
Liabilities settled		(73.2	)		(98.4	)
Accretion expense		33.3			32.4
Revisions in estimated cash flows		59.4			65.4
AROs, end of year		658.5			600.3
Less current portion		83.5			87.0
	$	575.0		$	513.3

15. ACCOUNTING FOR DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

We are exposed to the impact of fluctuations in the relative value of currencies, the impact of fluctuations in the purchase prices of natural gas and ammonia consumed in operations, changes in freight costs as well as changes in the market value of our financial instruments. We periodically enter into derivatives in order to mitigate our foreign currency risks and the effects of changing commodity and freight prices, but not for speculative purposes. Subsequent to May 31, 2013 we have entered into forward-starting interest rate swaps in anticipation of the future issuance of debt.

Foreign Currency Derivatives—We periodically enter into derivatives contracts in order to reduce our foreign currency exchange rate risk. We use forward contracts, zero-cost collars and futures, which typically expire within one year, to reduce the impact of foreign currency exchange risk in our cash flows, not the foreign currency volatility in our earnings. One of the primary currency exposures relates to several of our Canadian entities, whose sales are denominated in U.S. dollars, but whose costs are paid principally in Canadian dollars, which is their functional currency. Our Canadian businesses generally hedge a portion of the currency risk

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exposure on anticipated cash inflows and outflows. Depending on the underlying exposure, such derivatives can create additional earnings volatility because we do not use hedge accounting. We hedge certain of these risks through forward contracts and zero-cost collars. Our Brazilian operations enter into foreign currency futures traded on the Futures and Commodities Exchange—Brazil Mercantile & Futures Exchange—and also enter into forward contracts to hedge foreign currency risk. We hedge a portion of their currency risk exposure on anticipated cash inflows and outflows similar to the process in Canada. Our other foreign locations also use forward contracts to reduce foreign currency risk.

Commodity Derivatives—We enter into derivative contracts to reduce the risk of price fluctuation in the purchases of certain of our product inputs. Our commodity derivatives contracts primarily relate to purchases of natural gas. We use forward purchase contracts, swaps, and three-way collars to reduce these risks. The use of these financial instruments reduces the exposure of these risks with the intent to reduce our risk and variability.

Freight Derivatives—We enter into derivative contracts to reduce the risk of price fluctuation in the purchases of our freight. We use forward freight agreements to reduce the risk and variability of related price changes in freight. The use of these financial instruments reduces the exposure of these risks with the intent to reduce our risk and variability.

For additional disclosures about fair value measurement of derivative instruments, see Note 16 of our Notes to Consolidated Financial Statements.

As of May 31, 2013, the following is the total absolute notional volume associated with our outstanding derivative instruments:

(in millions of Units) Instrument	Derivative Category	Unit of Measure	May 31, 2013		May 31, 2012
Foreign currency derivatives	Foreign Currency	US Dollars		1,459.7		1,869.2
Natural gas derivatives	Commodity	MMbtu		15.2		24.3
Ocean freight contracts	Freight	Tonnes		1.5		2.1

We do not apply hedge accounting treatments to our foreign currency exchange contracts, commodities contracts, or freight contracts. Unrealized gains and (losses) on foreign currency exchange contracts used to hedge cash flows related to the production of our product are included in cost of goods sold in the Consolidated Statements of Earnings. Unrealized gains and (losses) on commodities contracts and certain forward freight agreements are also recorded in cost of goods sold in the Consolidated Statements of Earnings. Unrealized gains or (losses) on foreign currency exchange contracts used to hedge cash flows that are not related to the production of our products are included in the foreign currency transaction loss line in the Consolidated Statements of Earnings. Below is a table that shows the unrealized gains and (losses) on derivative instruments related to foreign currency exchange contracts, commodities contracts, and freight:

		Gain (loss)
(in millions)		Years ended May 31,
Derivative Instrument	Location	2013			2012			2011
Foreign currency derivatives	Cost of goods sold	$	(1.6	)	$	(23.9	)	$	6.8
Foreign currency derivatives	Foreign currency transaction gain		(13.8	)		(4.0	)		7.9
Commodity derivatives	Cost of goods sold		16.1			(16.0	)		8.3
Freight derivatives	Cost of goods sold		0.7			(2.0	)		(2.0	)

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The gross fair market value of all derivative instruments and their location in our Consolidated Balance Sheet are shown by those in an asset or liability position and are further categorized by foreign currency, commodity, and freight derivatives.

(in millions)	Asset Derivatives(a)			Liability Derivatives(a)
Derivative Instrument	Location	May 31, 2013		Location	May 31, 2013
Foreign currency derivatives	Other current assets	$	10.7	Accrued liabilities	$	(38.6	)
Commodity derivatives	Other current assets		4.8	Accrued liabilities		(6.1	)
Commodity derivatives	Other assets		0.2	Other noncurrent liabilities		-
Freight derivatives	Other current assets		1.7	Accrued liabilities		(0.4	)
Total		$	17.4		$	(45.1	)
(in millions)	Asset Derivatives(a)			Liability Derivatives(a)
Derivative Instrument	Location	May 31, 2012		Location	May 31, 2012
Foreign currency derivatives	Other current assets	$	23.8	Accrued liabilities	$	(36.7	)
Commodity derivatives	Other current assets		5.8	Accrued liabilities		(15.2	)
Commodity derivatives	Other assets		-	Other noncurrent liabilities		(8.3	)
Freight derivatives	Other current assets		1.1	Accrued liabilities		(0.5	)
Total		$	30.7		$	(60.7	)

^(a)  In accordance with U.S. GAAP the above amounts are disclosed at gross fair value and the amounts recorded on the Consolidated Balance Sheet are presented on a net basis when permitted.

Credit-Risk-Related Contingent Features

Certain of our derivative instruments contain provisions that require us to post collateral. These provisions also state that if our debt were to be rated below investment grade, certain counterparties to the derivative instruments could request full collateralization on derivative instruments in net liability positions. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a liability position on May 31, 2013 and 2012 was $40.4 million and $59.7 million, respectively. We have not posted cash collateral in the normal course of business associated with these contracts. If the credit-risk-related contingent features underlying these agreements were triggered on May 31, 2013, we would be required to post an additional $39.7 million of collateral assets, which are either cash or U.S. Treasury instruments, to the counterparties.

Counterparty Credit Risk

We enter into foreign exchange and certain commodity derivatives, primarily with a diversified group of highly rated counterparties. We continually monitor our positions and the credit ratings of the counterparties involved and limit the amount of credit exposure to any one party. While we may be exposed to potential losses due to the credit risk of non-performance by these counterparties, losses are not anticipated. We closely monitor the credit risk associated with our counterparties and customers and to date have not experienced material losses.

16. FAIR VALUE MEASUREMENTS

We determine the fair market values of our derivative contracts and certain other assets based on the fair value hierarchy described below, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels within its hierarchy that may be used to measure fair value.

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Level 1: Values based on unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities.

Level 2: Values based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3: Values generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

Assets and Liabilities Measured at Fair Value

The following table presents assets and liabilities included in our Consolidated Balance Sheets that are recognized at fair value on a recurring basis, and indicates the fair value hierarchy utilized to determine such fair value. The assets and liabilities are classified in their entirety based on the lowest level of input that is a significant component of the fair value measurement. The lowest level of input is considered Level 3. Our assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the classification of fair value assets and liabilities within the fair value hierarchy levels.

(in millions)	May 31, 2013
	Total		Level 1		Level 2		Level 3
Assets
Foreign currency derivatives	$	10.7	$	8.7	$	2.0	$	-
Commodity derivatives		5.0		-		5.0		-
Freight derivatives		1.7		-		-		1.7
Total assets at fair value	$	17.4	$	8.7	$	7.0	$	1.7
Liabilities
Foreign currency derivatives	$	38.6	$	4.3	$	34.3	$	-
Commodity derivatives		6.1		-		6.1		-
Freight derivatives		0.4		-		-		0.4
Total liabilities at fair value	$	45.1	$	4.3	$	40.4	$	0.4
(in millions)	May 31, 2012
	Total		Level 1		Level 2		Level 3
Assets
Foreign currency derivatives	$	23.8	$	20.1	$	3.7	$	-
Commodity derivatives		5.8		0.4		5.4		-
Freight derivatives		1.1		-		-		1.1
Total assets at fair value	$	30.7	$	20.5	$	9.1	$	1.1
Liabilities
Foreign currency derivatives	$	36.7	$	0.3	$	36.4	$	-
Commodity derivatives		23.5		-		23.5		-
Freight derivatives		0.5		-		-		0.5
Total liabilities at fair value	$	60.7	$	0.3	$	59.9	$	0.5

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Following is a summary of the valuation techniques for assets and liabilities recorded in our Consolidated Balance Sheets at fair value on a recurring basis:

Foreign Currency Derivatives—The foreign currency derivative instruments that we currently use are forward contracts, zero-cost collars, and futures, which typically expire within one year. Valuations are based on exchange-quoted prices, which are classified as Level 1. Some of the valuations are adjusted by a forward yield curve or interest rates. In such cases, these derivative contracts are classified within Level 2. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold or foreign currency transaction (gain) loss.

Commodity Derivatives—The commodity contracts primarily relate to natural gas. The commodity derivative instruments that we currently use are forward purchase contracts, swaps, and three-way collars. The natural gas contracts settle using NYMEX futures or AECO price indexes, which represent fair value at any given time. The contracts’ maturities are for future months and settlements are scheduled to coincide with anticipated gas purchases during those future periods. Quoted market prices from NYMEX and AECO are used to determine the fair value of these instruments. These market prices are adjusted by a forward yield curve and are classified within Level 2. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold.

Freight Derivatives—The freight derivatives that we currently use are forward freight agreements. We estimate fair market values based on exchange-quoted prices, adjusted for differences in local markets. These differences are generally valued using inputs from broker quotations. Therefore, these contracts are classified in Level 2. Certain ocean freight derivatives are traded in less active markets with less availability of pricing information and require internally-developed inputs that might not be observable in or corroborated by the market. These contracts are classified within Level 3. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold.

Financial Instruments

The carrying amounts and estimated fair values of our financial instruments are as follows:

	May 31,
	2013				2012
(in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Cash and cash equivalents	$	3,697.1	$	3,697.1	$	3,811.0	$	3,811.0
Accounts receivable		1,015.7		1,015.7		751.6		751.6
Accounts payable trade		763.1		763.1		912.4		912.4
Short-term debt		68.7		68.7		42.5		42.5
Long-term debt, including current portion		1,010.5		1,093.3		1,010.5		1,116.9

For cash and cash equivalents, accounts receivable, accounts payable and short-term debt, the carrying amount approximates fair value because of the short-term maturity of those instruments. The fair value of long-term debt is estimated using quoted market prices for the publicly registered notes and debentures, classified as Level 1 and Level 2, respectively, within the fair value hierarchy, depending on the market liquidity of the debt.

17. GUARANTEES AND INDEMNITIES

We enter into various contracts that include indemnification and guarantee provisions as a routine part of our business activities. Examples of these contracts include asset purchase and sale agreements, surety bonds, financial assurances to regulatory agencies in connection with reclamation and closure obligations, commodity

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sale and purchase agreements, and other types of contractual agreements with vendors and other third parties. These agreements indemnify counterparties for matters such as reclamation and closure obligations, tax liabilities, environmental liabilities, litigation and other matters, as well as breaches by Mosaic of representations, warranties and covenants set forth in these agreements. In many cases, we are essentially guaranteeing our own performance, in which case the guarantees do not fall within the scope of the accounting and disclosures requirements under U.S. GAAP.

Our more significant guarantees and indemnities are as follows:

Guarantees to Brazilian Financial Parties. From time to time, we issue guarantees to financial parties in Brazil for certain amounts owed the institutions by certain customers of Mosaic. The guarantees are for all or part of the customers’ obligations. In the event that the customers default on their payments to the institutions and we would be required to perform under the guarantees, we have in most instances obtained collateral from the customers. We monitor the nonperformance risk of the counterparties and have noted no material concerns regarding their ability to perform on their obligations. The guarantees generally have a one-year term, but may extend up to two years or longer depending on the crop cycle, and we expect to renew many of these guarantees on a rolling twelve-month basis. As of May 31, 2013, we have estimated the maximum potential future payment under the guarantees to be $35.0 million. The fair value of our guarantees is immaterial to the Consolidated Financial Statements as of May 31, 2013 and May 31, 2012.

Other Indemnities. Our maximum potential exposure under other indemnification arrangements can range from a specified dollar amount to an unlimited amount, depending on the nature of the transaction. Total maximum potential exposure under these indemnification arrangements is not estimable due to uncertainty as to whether claims will be made or how they will be resolved. We do not believe that we will be required to make any material payments under these indemnity provisions.

Because many of the guarantees and indemnities we issue to third parties do not limit the amount or duration of our obligations to perform under them, there exists a risk that we may have obligations in excess of the amounts described above. For those guarantees and indemnities that do not limit our liability exposure, we may not be able to estimate what our liability would be until a claim is made for payment or performance due to the contingent nature of these arrangements. See Note 2 of our Notes to Consolidated Financial Statements for additional information for indemnification provisions related to the Cargill Transaction .

18. PENSION PLANS AND OTHER BENEFITS

We sponsor pension and postretirement benefits through a variety of plans including defined benefit plans, defined contribution plans, and postretirement benefit plans in North America and certain of our international locations. In addition, we are a participating employer in a Cargill defined benefit pension plan. We reserve the right to amend, modify, or terminate the Mosaic sponsored plans at any time, subject to provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”), prior agreements and our collective bargaining agreements.

In accordance with the merger and contribution agreement related to the Combination, pension and other postretirement benefit liabilities for certain of the former CCN employees were not transferred to us. Prior to the Combination, Cargill was the sponsor of the benefit plans for CCN employees and therefore, no assets or liabilities were transferred to us. These former CCN employees remain eligible for pension and postretirement benefits under Cargill’s plans. Cargill incurs the associated costs and then charges them to us. The amount that Cargill may charge to us for such pension costs may not exceed $2.0 million per year or $19.2 million in the aggregate. As of May 31, 2013, the aggregate amount remaining under this agreement that may be charged to us is $4.9 million. This cap does not apply to the costs associated with certain active union participants who formerly earned service under Cargill’s pension plan. This agreement remains in place subsequent to the Cargill Transaction described in Note 2 of our Notes to Consolidated Financial Statements.

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Costs charged to us for the former CCN employees’ pension expense were $3.3 million for fiscal 2013 and $3.6 million and $2.9 million for fiscal 2012 and 2011, respectively.

Defined Benefit Plans

We sponsor two defined benefit pension plans in the U.S. and four plans in Canada. We assumed these plans from IMC on the date of the Combination. Benefits are based on different combinations of years of service and compensation levels, depending on the plan. The U.S. salaried and non-union hourly plan provides benefits to employees who were IMC employees prior to January 1998. In addition, the plan, as amended, accrues no further benefits for plan participants, effective March 2003. The U.S. union pension plan provides benefits to union employees. Certain U.S. union employees were given the option and elected to participate in a defined contribution retirement plan in January 2004, in which case their benefits were frozen under the U.S. union pension plan. Other represented employees with certain unions hired on or after June 2003 are not eligible to participate in the U.S. union pension plan. The Canadian pension plans consist of two plans for salaried and non-union hourly employees, which are closed to new members, and two plans for union employees.

Generally, contributions to the U.S. plans are made to meet minimum funding requirements of ERISA, while contributions to Canadian plans are made in accordance with Pension Benefits Acts instituted by the provinces of Saskatchewan and Ontario. Certain employees in the U.S. and Canada, whose pension benefits exceed Internal Revenue Code and Canada Revenue Agency limitations, respectively, are covered by supplementary non-qualified, unfunded pension plans.

Postretirement Medical Benefit Plans

We provide certain health care benefit plans for certain retired employees (“Retiree Health Plans”) which may be either contributory or non-contributory and contain certain other cost-sharing features such as deductibles and coinsurance. The Retiree Health Plans are unfunded.

The U.S. retiree medical program for certain salaried and non-union retirees age 65 and over was terminated effective January 1, 2004. The retiree medical program for salaried and non-union hourly retirees under age 65 will end at age 65. The retiree medical program for certain active salaried and non-union hourly employees was terminated effective April 1, 2003. Coverage changes and termination of certain post-65 retiree medical benefits also were effective April 1, 2003. We also provide retiree medical benefits to union hourly employees. Pursuant to a collective bargaining agreement, certain represented employees hired after June 2003 are not eligible to participate in the retiree medical program. Retiree medical benefits were eliminated for certain active union employees.

Canadian postretirement medical plans are available to retired salaried employees. Under our Canadian postretirement medical plans, all Canadian active salaried employees are eligible for coverage upon retirement. There are no retiree medical benefits available for Canadian union hourly employees.

Our U.S. retiree medical program provides a benefit to our U.S. retirees that is at least actuarially equivalent to the benefit provided by the Medicare Prescription Drug, Improvement and Modernization Act of 2003 (Medicare Part D). Because our plan is more generous than Medicare Part D, it is considered at least actuarially equivalent to Medicare Part D and the U.S. government provides a subsidy to the Company.

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Accounting for Pension and Postretirement Plans

The year-end status of the North American plans was as follows:

	Pension Plans						Postretirement Benefit Plans
(in millions)	2013			2012			2013			2012
Change in projected benefit obligation:
Benefit obligation at beginning of year	$	743.3		$	694.3		$	59.9		$	60.1
Service cost		6.5			5.6			0.6			0.3
Interest cost		32.6			34.5			2.3			2.6
Plan amendments		15.3			-			-			-
Actuarial loss		26.9			59.3			0.6			4.0
Currency fluctuations		(0.4	)		(15.5	)		-			(0.9	)
Employee contribution		-			-			0.1			0.1
Benefits paid		(35.6	)		(34.9	)		(5.6	)		(6.3	)
Projected benefit obligation at end of year	$	788.6		$	743.3		$	57.9		$	59.9
Change in plan assets:
Fair value at beginning of year	$	654.4		$	630.0		$	-		$	-
Currency fluctuations		(0.3	)		(12.9	)		-			-
Actual return		53.9			45.4			-			-
Company contribution		35.2			26.8			5.5			6.2
Employee contribution		-			-			0.1			0.1
Benefits paid		(35.6	)		(34.9	)		(5.6	)		(6.3	)
Fair value at end of year	$	707.6		$	654.4		$	-		$	-
Funded status of the plans as of May 31	$	(81.0	)	$	(88.9	)	$	(57.9	)	$	(59.9	)
Amounts recognized in the consolidated balance sheets:
Noncurrent assets	$	6.4		$	-		$	-		$	-
Current liabilities		(0.6	)		(0.6	)		(5.9	)		(6.3	)
Noncurrent liabilities		(86.8	)		(88.3	)		(52.0	)		(53.6	)
Amounts recognized in accumulated other comprehensive (income) loss
Prior service costs (credits)	$	27.1		$	13.2		$	(3.2	)	$	(4.9	)
Actuarial (gain)/loss		125.4			131.3			(7.0	)		(8.9	)

The accumulated benefit obligation for the defined benefit pension plans was $782.5 million and $736.2 million as of May 31, 2013 and 2012, respectively.

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The components of net annual periodic benefit costs and other amounts recognized in other comprehensive income include the following components:

(in millions)	Pension Plans									Postretirement Benefit Plans
Net Periodic Benefit Cost	2013			2012			2011			2013			2012			2011
Service cost	$	6.5		$	5.6		$	5.0		$	0.6		$	0.3		$	0.4
Interest cost		32.6			34.5			36.2			2.3			2.6			3.1
Expected return on plan assets		(37.3	)		(35.8	)		(38.0	)		-			-			-
Amortization of:
Prior service cost/(credit)		1.3			1.3			0.9			(1.7	)		(1.7	)		(2.3	)
Actuarial (gain)/loss		16.1			13.4			7.4			(1.3	)		(1.8	)		(0.7	)
Net periodic benefit (income) cost	$	19.2		$	19.0		$	11.5		$	(0.1	)	$	(0.6	)	$	0.5
Other Changes in Plan Assets and Benefit
Obligations Recognized in Other
Comprehensive Income
Prior service cost (credit) recognized in other comprehensive income	$	14.1		$	(1.3	)	$	4.9		$	1.7		$	1.7		$	2.3
Net actuarial loss (gain) recognized in other comprehensive income		(5.9	)		36.3			(26.7	)		1.9			5.8			(38.0	)
Total recognized in other comprehensive income	$	8.2		$	35.0		$	(21.8	)	$	3.6		$	7.5		$	(35.7	)
Total recognized in net periodic benefit (income) cost and other comprehensive income	$	27.4		$	54.0		$	(10.3	)	$	3.5		$	6.9		$	(35.2	)

The estimated net actuarial gain (loss) and prior service cost for the pension plans and postretirement plans that will be amortized from accumulated other comprehensive income into net periodic benefit cost in fiscal 2014 is $7.0 million and $(2.6) million, respectively.

The following estimated benefit payments, which reflect estimated future service are expected to be paid by the related plans in the fiscal years ending May 31:

(in millions)	Pension Plans Benefit Payments		Other Postretirement Plans Benefit Payments		Medicare Part D Adjustments
2014	$	39.7	$	5.9	$	0.5
2015		40.7		5.8		0.5
2016		42.4		5.6		0.5
2017		43.7		5.4		0.5
2018		45.1		4.9		0.4
2019-2023		246.3		17.4		1.6

In fiscal 2014, we need to contribute cash of at least $65.8 million to the pension plans to meet minimum funding requirements. Also in fiscal 2014, we anticipate contributing cash of $5.9 million to the postretirement medical benefit plans to fund anticipated benefit payments.

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Plan Assets and Investment Strategies

The Company’s overall investment strategy is to obtain sufficient return and provide adequate liquidity to meet the benefit obligations of our pension plans. Investments are made in public securities to ensure adequate liquidity to support benefit payments. Domestic and international stocks and bonds provide diversification to the portfolio. Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:

US Pension Plan Assets	2013 Target			Plan Assets as of May 31, 2013			2012 Target			Plan Assets as of May 31, 2012
Asset Category
U.S. equity securities		12	%		13	%		12	%		11	%
Non-U.S. equity securities		7	%		7	%		7	%		6	%
Real estate		3	%		4	%		3	%		4	%
Fixed income		75	%		74	%		75	%		77	%
Private equity		3	%		1	%		3	%		2	%
Other		0	%		1	%		0	%		0	%
Total		100	%		100	%		100	%		100	%
Canadian Pension Plan Assets	2013 Target			Plan Assets as of May 31, 2013			2012 Target			Plan Assets as of May 31, 2012
Asset Category
Canadian equity securities		22	%		20	%		22	%		21	%
U.S. equity securities		23	%		21	%		24	%		22	%
Non-U.S. equity securities		15	%		14	%		15	%		14	%
Fixed income		40	%		37	%		30	%		38	%
Private equity		0	%		2	%		9	%		3	%
Other		0	%		6	%		0	%		2	%
Total		100	%		100	%		100	%		100	%

For the U.S. plans, we utilize an asset allocation policy that seeks to maintain a fully-funded plan status under the Pension Protection Act (PPA) of 2006. As such, the primary investment objective beyond accumulating sufficient assets to meet future benefit obligation is to monitor and manage the liabilities of the plan to better insulate the portfolio from changes in interest rates that are impacting the liabilities. This requires an interest rate management strategy to reduce the sensitivity in the plan’s funded status and having a portion of the Plan’s assets invested in return-seeking strategies. Currently, our policy includes a 75% allocation to fixed income and 25% to return-seeking strategies. The U.S. pension plans’ benchmark of the return-seeking strategies is currently comprised of the following indices and their respective weightings: 23% Russell 1000, 19% Russell 1000 Defensive, 8% Russell 2500, 24% MSCI EAFE Net, 4% MSCI EM Net, 16% NFI-ODCE-EQ and 6% Private Equity. The benchmark for the fixed income strategies are comprised of 19% Barclays Long Gov/Credit and 81% Barclays-Russell LDI benchmarks of various durations.

For the Canadian pension plan the investment objectives for the pension plans’ assets are as follows: (i) achieve a nominal annualized rate of return equal to or greater than the actuarially assumed investment return over ten to twenty-year periods; (ii) achieve an annualized rate of return of the Consumer Price Index plus 5% over ten to

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twenty-year periods; (iii) realize annual, three and five-year annualized rates of return consistent with or in excess of specific respective market benchmarks at the individual asset class level; and (iv) achieve an overall return on the pension plans’ assets consistent with or in excess of the total fund benchmark, which is a hybrid benchmark customized to reflect the trusts’ asset allocation and performance objectives. The Canadian pension plans’ benchmark is currently comprised of the following indices and their respective weightings: 21% S&P/TSX 300, 22% Russell 1000, 14% MSCI EAFE ND, 39% DEX Bond Universe, and 4% Private Equity.

In 2011, the Company completed an asset/liability study for the Canadian pension plans in an effort to select an appropriate asset allocation that will assess the potential impacts on funding. These studies resulted in the Company selecting an asset allocation policy that seeks to maintain an appropriate allocation to return seeking assets and an interest rate management strategy. This new policy is reflected in our 2013 target asset allocations above and in our assumed long term rate of return for our Canadian plans, and is nearing full implementation.

A significant amount of the assets are invested in funds that are managed by a group of professional investment managers. These funds are mainly commingled funds. Performance is reviewed by management monthly by comparing the funds’ return to benchmark with an in depth quarterly review presented to the Pension Investment Committee. We do not have any significant concentrations of credit risk or industry sectors within the plan assets. Assets may be indirectly invested in Mosaic stock, but any risk related to this investment would be immaterial due to the insignificant percentage of the total pension assets that would be invested in Mosaic stock.

Fair Value Measurements of Plan Assets

The following tables provide fair value measurement, by asset class of the Company’s defined benefit plan assets for both the U.S. and Canadian plans (see Note 17 for a description of the fair value hierarchy methodology):

(in millions)	May 31, 2013
U.S. Pension Plan Assets	Total		Level 1		Level 2		Level 3
Asset Category
Cash	$	1.5	$	1.5	$	-	$	-
Equity securities:
U.S.		53.9		-		53.9		-
International		31.0		-		31.0		-
Real estate		17.0		-		-		17.0
Fixed income(a)		319.5		-		319.5		-
Private equity funds(b)		6.4		-		-		6.4
Total assets at fair value	$	429.3	$	1.5	$	404.4	$	23.4

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(in millions)	May 31, 2012
U.S. Pension Plan Assets	Total		Level 1		Level 2		Level 3
Asset Category
Equity securities:
U.S.	$	44.6	$	-	$	44.6	$	-
International		24.4		-		24.4		-
Real estate		15.6		-		-		15.6
Fixed income(a)		323.0		-		323.0		-
Private equity funds(b)		8.2		-		-		8.2
Total assets at fair value	$	415.8	$	-	$	392.0	$	23.8

^(a)  This class includes several funds that are invested approximately 17% in U.S. federal government debt securities, 10% in other governmental securities, 5% in foreign entity debt securities and 68% in corporate debt securities.

^(b)  This class includes several private equity funds that invest in U.S. and European corporations and financial institutions.

(in millions)	May 31, 2013
Canadian Pension Plan Assets	Total		Level 1		Level 2		Level 3
Asset Category
Cash	$	14.1	$	14.1	$	-	$	-
Equity securities:
Canadian		56.8		-		56.8		-
U.S.		59.0		-		59.0		-
Non-U.S. international		38.6		-		38.6		-
Fixed income(a)		103.9		-		103.9		-
Private equity funds(b)		5.9		-		-		5.9
Total assets at fair value	$	278.3	$	14.1	$	258.3	$	5.9

(in millions)	May 31, 2012
Canadian Pension Plan Assets	Total		Level 1		Level 2		Level 3
Asset Category
Cash	$	5.9	$	5.9	$	-	$	-
Equity securities:
Canadian		50.0		-		50.0		-
U.S.		51.9		-		51.9		-
Non-U.S. international		33.9		-		33.9		-
Fixed income(a)		90.3		-		90.3		-
Private equity funds(b)		6.6		-		-		6.6
Total assets at fair value	$	238.6	$	5.9	$	226.1	$	6.6

^(a)  This class consists of a fund that invests approximately 38% in Canadian federal government debt securities, 16% in Canadian provincial government securities, 28% in Canadian corporate debt securities and 15% in foreign entity debt securities and 3% other.

^(b)  This class includes several private equity funds that invest in U.S. and international corporations.

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Equity securities and fixed income investments for both the U.S and Canadian plans are held in common/collective funds valued at the net asset value (NAV) as determined by the fund managers, and generally have daily liquidity. NAV is based on the fair value of the underlying assets owned by the funds, less liabilities, and divided by the number of units outstanding. Private equity funds and real estate equity securities are valued at NAV as determined by the fund manager and have liquidity restrictions based on the nature of the underlying investments.

The following table provides a reconciliation of our plan assets measured at fair value using significant unobservable inputs (Level 3) for the year ended May 31, 2013:

(in millions)	U.S Pension Assets			Canadian Pension Assets
Balance as of June 1, 2011	$	22.8		$	7.2
Net realized and unrealized gains		1.6			0.7
Purchases, issuances, settlements, net		(0.6	)		(1.3	)
Balance as of May 31, 2012		23.8			6.6
Net realized and unrealized gains		0.4			0.7
Purchases, issuances, settlements, net		(0.8	)		(1.4	)
Balance as of May 31, 2013	$	23.4		$	5.9

Rates and Assumptions

The approach used to develop the discount rate for the pension and postretirement plans is commonly referred to as the yield curve approach. Under this approach, we use a hypothetical curve formed by the average yields of available corporate bonds rated AA and above and match it against the projected benefit payment stream. Each category of cash flow of the projected benefit payment stream is discounted back using the respective interest rate on the yield curve. Using the present value of projected benefit payments, a weighted-average discount rate is derived.

The approach used to develop the expected long-term rate of return on plan assets combines an analysis of historical performance, the drivers of investment performance by asset class, and current economic fundamentals. For returns, we utilized a building block approach starting with inflation expectations and added an expected real return to arrive at a long-term nominal expected return for each asset class. Long-term expected real returns are derived in the context of future expectations of the U.S. Treasury real yield curve.

Weighted average assumptions used to determine benefit obligations were as follows:

	Pension Plans									Postretirement Benefit Plans
	2013			2012			2011			2013			2012			2011
Discount rate		4.25	%		4.44	%		5.13	%		3.77	%		3.92	%		4.54	%
Expected return on plan assets		6.13	%		6.29	%		6.87	%		-			-			-
Rate of compensation increase		4.00	%		4.00	%		4.00	%		-			-			-

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Weighted-average assumptions used to determine net benefit cost were as follows:

	Pension Plans									Postretirement Benefit Plans
	2013			2012			2011			2013			2012			2011
Discount rate		4.44	%		5.13	%		5.61	%		3.92	%		4.54	%		5.71	%
Expected return on plan assets		6.29	%		6.87	%		6.92	%		-			-			-
Rate of compensation increase		4.00	%		4.00	%		4.00	%		-			-			-

Assumed health care trend rates used to measure the expected cost of benefits covered by the plans were as follows:

	2013			2012			2011
Health care cost trend rate assumption for the next fiscal year		7.75	%		8.00	%		8.50	%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)		5.50	%		5.50	%		5.50	%
Fiscal year that the rate reaches the ultimate trend rate		2019			2019			2015

Assumed health care cost trend rates have an effect on the amounts reported. For the health care plans a one-percentage-point change in the assumed health care cost trend rate would have the following effect:

	2013					2012					2011
(in millions)	One Percentage Point Increase		One Percentage Point Decrease			One Percentage Point Increase		One Percentage Point Decrease			One Percentage Point Increase		One Percentage Point Decrease
Total service and interest cost	$	0.1		(0.1	)	$	0.2		(0.1	)	$	0.1	$	(0.1	)
Postretirement benefit obligation		2.7		(2.3	)		2.7		(2.3	)		2.5		(2.5	)

Defined Contribution Plans

The Mosaic Investment Plan (“Investment Plan”) permits eligible salaried and nonunion hourly employees to defer a portion of their compensation through payroll deductions and provides matching contributions. We match 100% of the first 3% of the participant’s contributed pay plus 50% of the next 3% of the participant’s contributed pay to the Investment Plan, subject to Internal Revenue Service limits. Participant contributions, matching contributions, and the related earnings immediately vest. The Investment Plan also provides an annual non-elective employer contribution feature for eligible salaried and non-union hourly employees based on the employee’s age and eligible pay. Participants are generally vested in the non-elective employer contributions after three years of service. In addition, a discretionary feature of the plan allows the Company to make additional contributions to employees.

The Mosaic Union Savings Plan (“Savings Plan”) was established pursuant to collective bargaining agreements with certain unions. Mosaic makes contributions to the defined contribution retirement plan based on the collective bargaining agreements. The Savings Plan is the primary retirement vehicle for newly hired employees covered by certain collective bargaining agreements.

The expense attributable to the Investment Plan and Savings Plan was $34.5 million, $30.0 million and $28.5 million in fiscal 2013, 2012 and 2011, respectively.

Canadian salaried and non-union hourly employees participate in an employer funded plan with employer contributions similar to the U.S. plan. The plan provides a profit sharing component which is paid each year. We also sponsor one mandatory union plan in Canada. Benefits in these plans vest after two years of consecutive service.

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19. SHARE-BASED PAYMENTS

We sponsor one share-based compensation plan. The Mosaic Company 2004 Omnibus Stock and Incentive Plan (the “Omnibus Plan”), which was approved by shareholders and became effective October 20, 2004 and amended most recently on May 11, 2011, permits the grant of shares and share options to employees for up to 25 million shares of common stock. The Omnibus Plan provides for grants of stock options, restricted stock, restricted stock units, performance units and a variety of other share-based and non-share-based awards. Our employees, officers, directors, consultants, agents, advisors, and independent contractors, as well as other designated individuals, are eligible to participate in the Omnibus Plan. Mosaic settles stock option exercises, restricted stock units and performance units with newly issued common shares. The Compensation Committee of the Board of Directors administers the Omnibus Plan subject to its provisions and applicable law.

Stock Options

Stock options are granted with an exercise price equal to the market price of our stock at the date of grant and have a ten-year contractual term. The fair value of each option award is estimated on the date of the grant using the Black-Scholes option valuation model. Stock options vest in equal annual installments in the first three years following the date of grant (graded vesting). Stock options are expensed on a straight-line basis over the required service period, based on the estimated fair value of the award on the date of grant, net of estimated forfeitures.

Valuation Assumptions

Assumptions used to calculate the fair value of stock options in each period are noted in the following table. Starting in fiscal 2012, expected volatility is based on the simple average of implied and historical volatility using the daily closing prices of the Company’s stock for a period equal to the expected term of the option. Prior to fiscal 2012, expected volatility was based on the combination of our and IMC’s historical six-year volatility of common stock. The expected term of the options is calculated using historical employee grant and exercise data. In fiscal 2011, the expected term of the options was calculated using the simplified method described in SEC Staff Accounting Bulletin 110, Use of a Simplified Method in Developing an Estimate of Expected Term of “Plain Vanilla” Share Options, under which the Company can take the midpoint of the vesting date and the full contractual term. The risk-free interest rate is based on the U.S. Treasury rate at the time of the grant for instruments of comparable life.

	Years ended May 31,
	2013			2012			2011
Weighted average assumptions used in option valuations:
Expected volatility		47.70	%		51.80	%		60.46	%
Expected dividend yield		1.74	%		0.28	%		0.44	%
Expected term (in years)		7.0			5.0			6.0
Risk-free interest rate		0.92	%		1.46	%		2.13	%

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A summary of the status of our stock options as of May 31, 2013, and activity during fiscal 2013, is as follows:

	Shares (in millions)			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of June 1, 2012		2.5		$	41.93		5.8	$	34.6
Granted		0.3			57.32
Exercised		(0.3	)		26.94
Outstanding as of May 31, 2013		2.5		$	43.93		5.2	$	53.6
Exercisable as of May 31, 2013		2.0		$	40.33		4.5	$	51.0

The weighted-average grant date fair value of options granted during fiscal 2013, 2012 and 2011 was $22.71, $30.96 and $26.38, respectively. The total intrinsic value of options exercised during fiscal 2013, 2012 and 2011 was $6.8 million, $5.5 million and $54.1 million, respectively.

Restricted Stock Units

Restricted stock units are issued to various employees, officers and directors at a price equal to the market price of our stock at the date of grant. The fair value of restricted stock units is equal to the market price of our stock at the date of grant. Restricted stock units generally cliff vest after three years of continuous service and are expensed on a straight-line basis over the required service period, based on the estimated grant date fair value, net of estimated forfeitures.

A summary of the status of our restricted stock units as of May 31, 2013, and activity during fiscal 2013, is as follows:

	Shares (in millions)			Weighted Average Grant Date Fair Value Per Share
Restricted stock units as of June 1, 2012		0.6		$	54.47
Granted		0.3			57.36
Issued and canceled		(0.2	)		53.20
Restricted stock units as of May 31, 2013		0.7		$	56.40

Performance Units

During fiscal 2013, approximately 100,000 performance units were granted with a weighted average grant date fair value of $71.19. Final performance units awarded based on the increase or decrease, subject to certain limitations, in Mosaic’s share price from the grant date to the third anniversary of the award, plus dividends. The beginning and ending stock prices are based on a 30 trading-day average stock price. Holders of the awards must be employed at the end of the performance period in order for any shares to vest.

The fair value of each performance unit is determined using a Monte Carlo simulation. This valuation methodology utilizes assumptions consistent with those of our other share-based awards and a range of ending stock prices; however, the expected term of the awards is three years, which impacts the assumptions used to

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calculate the fair value of performance units as shown in the table below. Performance units are considered equity-classified fixed awards measured at grant-date fair value and not subsequently re-measured. Performance units cliff vest after three years of continuous service. Performance units are expensed on a straight-line basis over the required service period, based on the estimated grant date fair value of the award net of estimate forfeitures.

A summary of the assumptions used to estimate the fair value of performance units is as follows:

	Years ended May 31,
	2013			2012
Weighted average assumptions used in performance unit valuations:
Expected volatility		38.05	%		54.72	%
Expected dividend yield		1.74	%		0.28	%
Expected term (in years)		3.0			3.0
Risk-free interest rate		0.31	%		0.69	%

A summary of our performance unit activity during fiscal 2013 is as follows:

	Shares (in millions)		Weighted Average Grant Date Fair Value Per Share
Outstanding as of June 1, 2012		0.1	$	81.10
Granted		0.1		71.19
Outstanding as of May 31, 2013		0.2	$	75.15

We recorded share-based compensation expense of $32.2 million for fiscal 2013, $25.2 million for fiscal 2012 and $21.9 million for fiscal 2011. The tax benefit related to share-based compensation expense was $11.4 million for fiscal 2013, $8.7 million for fiscal 2012 and $7.8 million for fiscal 2011.

As of May 31, 2013, there was $17.9 million of total unrecognized compensation cost related to options, restricted stock units and performance units granted under the Omnibus Plan. The unrecognized compensation cost is expected to be recognized over a weighted-average period of 1.9 years. The total fair value of options vested in fiscal 2013 and 2012 was $9.5 million and $10.2 million, respectively.

Cash received from exercises of all share-based payment arrangements for fiscal 2013, 2012 and 2011 was $6.0 million, $3.0 million and $20.3 million, respectively. In fiscal 2013, 2012 and 2011 we received a tax benefit for tax deductions from options of $6.4 million, $3.7 million and $20.9 million, respectively.

20. COMMITMENTS

We lease certain plants, warehouses, terminals, office facilities, railcars and various types of equipment under operating leases, some of which include rent payment escalation clauses, with lease terms ranging from one to ten years. In addition to minimum lease payments, some of our office facility leases require payment of our proportionate share of real estate taxes and building operating expenses.

We have long-term agreements for the purchase of sulfur which is used in the production of phosphoric acid. In addition, we have long-term agreements for the purchase of raw materials, including a commercial offtake

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agreement with the Miski Mayo Mine for phosphate rock, used to produce phosphate products. We have long-term agreements for the purchase of natural gas, which is a significant raw material, used primarily in the solution mining process in our Potash segment and used in our phosphate concentrates plants. Also, we have agreements for capital expenditures primarily in our Potash segments related to our expansion projects.

A schedule of future minimum long-term purchase commitments, based on May 31, 2013 market prices, and minimum lease payments under non-cancelable operating leases as of May 31, 2013 follows:

(in millions)	Purchase Commitments		Operating Leases
2014	$	1,872.5	$	50.2
2015		740.3		35.5
2016		446.8		26.9
2017		144.0		21.5
2018		133.3		18.0
Subsequent years		2,073.3		39.6
	$	5,410.2	$	191.7

Rental expense for fiscal 2013, 2012 and 2011 amounted to $88.8 million, $80.0 million and $79.5 million, respectively. Purchases made under long-term commitments were $2.7 billion, $3.1 billion and $2.2 billion for fiscal 2013, 2012, and 2011, respectively.

Most of our export sales of phosphate and potash crop nutrients are marketed through two North American export associations, PhosChem and Canpotex, which may fund their operations in part through third-party financing facilities. As a member, Mosaic or our subsidiaries are contractually obligated to reimburse the export associations for their pro rata share of any operating expenses or other liabilities incurred. The reimbursements are made through reductions to members’ cash receipts from the export associations.

Under an agreement (the “Tolling Agreement”) with Potash Corporation of Saskatchewan Inc. (“PCS”), our wholly-owned subsidiary, Mosaic Potash Esterhazy Limited Partnership (“Mosaic Esterhazy”), mined and refined PCS’ potash reserves at our Esterhazy mine for a fee plus a pro rata share of operating and capital costs for approximately forty years. Under the agreement, we delivered to PCS up to approximately 1.1 million tonnes of potash per year. As previously reported, on December 7, 2011, we and PCS settled, among other matters, a dispute regarding the expiration of the Tolling Agreement. Under the settlement, the Tolling Agreement expired on December 31, 2012. The productive capacity at our Esterhazy mine previously used to satisfy our obligations under the Tolling Agreement is now fully available to us for sales to any of our customers at then-current market prices. In addition, effective December 31, 2012, we received credit for 1.2 million metric tonnes of capacity at our Esterhazy mine for purposes of calculating our relative share of annual sales of potash to international customers by Canpotex Limited, capacity which was previously allocated to PCS. Canpotex is an export association of certain Canadian potash producers. Canpotex sales are generally allocated among the producer members based on production capacity.

For fiscal 2013, 2012 and 2011, total revenue under this contract was $118.5 million, $158.2 million and $186.8 million, respectively.

We incur liabilities for reclamation activities and Gypstack closures in our Florida and Louisiana operations where, in order to obtain necessary permits, we must either pass a test of financial strength or provide credit support, typically in the form of surety bonds or letters of credit. The surety bonds generally expire within one year or less but a substantial portion of these instruments provide financial assurance for continuing obligations

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and, therefore, in most cases, must be renewed on an annual basis. As of May 31, 2013, we had $183.9 million in surety bonds outstanding, of which $170.2 million is for mining reclamation obligations in Florida and $13.7 million is for other matters.

21. CONTINGENCIES

We have described below judicial and administrative proceedings to which we are subject.

We have contingent environmental liabilities that arise principally from three sources: (i) facilities currently or formerly owned by our subsidiaries or their predecessors; (ii) facilities adjacent to currently or formerly owned facilities; and (iii) third-party Superfund or state equivalent sites. At facilities currently or formerly owned by our subsidiaries or their predecessors, the historical use and handling of regulated chemical substances, crop and animal nutrients and additives and by-product or process tailings have resulted in soil, surface water and/or groundwater contamination. Spills or other releases of regulated substances, subsidence from mining operations and other incidents arising out of operations, including accidents, have occurred previously at these facilities, and potentially could occur in the future, possibly requiring us to undertake or fund cleanup or result in monetary damage awards, fines, penalties, other liabilities, injunctions or other court or administrative rulings. In some instances, pursuant to consent orders or agreements with governmental agencies, we are undertaking certain remedial actions or investigations to determine whether remedial action may be required to address contamination. At other locations, we have entered into consent orders or agreements with appropriate governmental agencies to perform required remedial activities that will address identified site conditions. Taking into consideration established accruals of approximately $24.7 million and $27.3 million as of May 31, 2013 and 2012, respectively, expenditures for these known conditions currently are not expected, individually or in the aggregate, to have a material effect on our business or financial condition. However, material expenditures could be required in the future to remediate the contamination at known sites or at other current or former sites or as a result of other environmental, health and safety matters. Below is a discussion of the more significant environmental matters.

EPA RCRA Initiative. In 2003, the U.S. Environmental Protection Agency (“EPA”) Office of Enforcement and Compliance Assurance announced that it would be targeting facilities in mineral processing industries, including phosphoric acid producers, for a thorough review under the U.S. Resource Conservation and Recovery Act (“RCRA”) and related state laws. Mining and processing of phosphates generate residual materials that must be managed both during the operation of a facility and upon a facility’s closure. Certain solid wastes generated by our phosphate operations may be subject to regulation under RCRA and related state laws. The EPA rules exempt “extraction” and “beneficiation” wastes, as well as 20 specified “mineral processing” wastes, from the hazardous waste management requirements of RCRA. Accordingly, certain of the residual materials which our phosphate operations generate, as well as process wastewater from phosphoric acid production, are exempt from RCRA regulation. However, the generation and management of other solid wastes from phosphate operations may be subject to hazardous waste regulation if the waste is deemed to exhibit a “hazardous waste characteristic.” As part of its initiative, we understand that EPA has inspected all or nearly all facilities in the U.S. phosphoric acid production sector to ensure compliance with applicable RCRA regulations and to address any “imminent and substantial endangerment” found by the EPA under RCRA. We have provided the EPA with substantial amounts of information regarding the process water recycling practices and the hazardous waste handling practices at our phosphate production facilities in Florida and Louisiana, and the EPA has inspected all of our currently operating processing facilities in the U.S. In addition to the EPA’s inspections, our phosphates concentrates facilities have entered into consent orders to perform analyses of existing environmental data, to perform further environmental sampling as may be necessary, and to assess whether the facilities pose a risk of harm to human health or the surrounding environment.

We have received Notices of Violation (“NOVs”) from the EPA related to the handling of hazardous waste at our Riverview (September 2005), New Wales (October 2005), Mulberry (June 2006), Green Bay (August 2006) and Bartow (September 2006) facilities in Florida. The EPA has issued similar NOVs to our competitors and referred

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the NOVs to the U.S. Department of Justice (“DOJ”) for further enforcement. We currently are engaged in discussions with the DOJ and EPA. We believe we have substantial defenses to allegations in the NOVs, including but not limited to previous EPA regulatory interpretations and inspection reports finding that the process water handling practices in question comply with the requirements of the exemption for extraction and beneficiation wastes. We intend to evaluate various alternatives and continue discussions to determine if a negotiated resolution can be reached. If it cannot, we intend to vigorously defend these matters in any enforcement actions that may be pursued.

We are negotiating the terms of a possible settlement with the EPA, the DOJ, the Florida Department of Environmental Protection and the Louisiana Department of Environmental Quality (collectively, the “Government”) and the final terms are not yet agreed upon or approved. If a settlement can be achieved, in all likelihood our commitments would be multi-faceted with key elements including, in general and among other elements, the following:

• Incurring capital expenditures likely to exceed $150 million in the aggregate over a period of several years.

• Providing meaningful additional financial assurance for the estimated costs of closure and post-closure care of our Gypstacks (“Gypstack Closure Costs”). For financial reporting purposes, we recognize our estimated asset retirement obligations (“AROs”), including Gypstack Closure Costs, at their present value. This present value determined for financial reporting purposes is reflected on our Consolidated Balance Sheets in accrued liabilities and other noncurrent liabilities. As of May 31, 2013, the undiscounted amount of our AROs, determined using the assumptions used for financial reporting purposes, was approximately $1.5 billion and the present value of our Gypstack Closure Costs reflected in our Consolidated Balance Sheet was approximately $450 million. Currently, financial assurance requirements in Florida and Louisiana for Gypstack Closure Costs can be satisfied through a variety of methods, including satisfaction of financial tests. In the context of a potential settlement of the Government’s enforcement action, we expect that we would agree to pre-fund a material portion of our Gypstack Closure Costs, primarily by depositing cash, currently estimated to be in the amount of approximately $625 million, into a trust fund which would increase over time with reinvestment of earnings. Amounts held in any such trust fund (including reinvested earnings) would be classified as restricted cash on our Consolidated Balance Sheets. We expect that any final settlement of this matter would resolve all of our financial assurance obligations to the Government for Gypstack Closure Costs. Our actual Gypstack Closure Costs are generally expected to be paid by us in the normal course of our Phosphates business over a period that may not end until three decades or more after a Gypstack has been closed.

• We have also established accruals to address the estimated cost of civil penalties in connection with this matter, which we do not believe, in light of the relevant regulatory history, would be material to our results of operations, liquidity or capital resources.

In light of our strong operating cash flows, liquidity and capital resources, we believe that we have sufficient liquidity and capital resources to be able to fund such capital expenditures, financial assurance requirements and civil penalties as part of a settlement. If a settlement cannot be agreed upon, we cannot predict the outcome of any litigation or estimate the potential amount or range of loss; however, we would face potential exposure to material costs should we fail in the defense of an enforcement action.

EPA EPCRA Initiative. In July 2008, the DOJ sent a letter to major U.S. phosphoric acid manufacturers, including us, stating that the EPA’s ongoing investigation indicates apparent violations of Section 313 of the Emergency Planning and Community Right-to-Know Act (“EPCRA”) at their phosphoric acid manufacturing facilities. Section 313 of EPCRA requires annual reports to be submitted with respect to the use or presence of certain toxic chemicals. DOJ and EPA also stated that they believe that a number of these facilities have violated

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Section 304 of EPCRA and Section 103 of the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”) by failing to provide required notifications relating to the release of hydrogen fluoride from the facilities. The letter did not identify any specific violations by us or assert a demand for penalties against us. We cannot predict at this time whether the EPA and DOJ will initiate an enforcement action over this matter, what its scope would be, or what the range of outcomes of such a potential enforcement action might be.

Florida Sulfuric Acid Plants. On April 8, 2010, the EPA Region 4 submitted an administrative subpoena to us under Section 114 of the Federal Clean Air Act (the “CAA”) regarding compliance of our Florida sulfuric acid plants with the “New Source Review” requirements of the CAA. The request received by Mosaic appears to be part of a broader EPA national enforcement initiative focusing on sulfuric acid plants. We cannot predict at this time whether the EPA and DOJ will initiate an enforcement action over this matter, what its scope would be, or what the range of outcomes of such a potential enforcement action might be.

Other Environmental Matters. Superfund and equivalent state statutes impose liability without regard to fault or to the legality of a party’s conduct on certain categories of persons who are considered to have contributed to the release of “hazardous substances” into the environment. Under Superfund, or its various state analogues, one party may, under certain circumstances, be required to bear more than its proportionate share of cleanup costs at a site where it has liability if payments cannot be obtained from other responsible parties. Currently, certain of our subsidiaries are involved or concluding involvement at several Superfund or equivalent state sites. Our remedial liability from these sites, alone or in the aggregate, currently is not expected to have a material effect on our business or financial condition. As more information is obtained regarding these sites and the potentially responsible parties involved, this expectation could change.

We believe that, pursuant to several indemnification agreements, our subsidiaries are entitled to at least partial, and in many instances complete, indemnification for the costs that may be expended by us or our subsidiaries to remedy environmental issues at certain facilities. These agreements address issues that resulted from activities occurring prior to our acquisition of facilities or businesses from parties including, but not limited to, ARCO (BP); Beatrice Fund for Environmental Liabilities; Conoco; Conserv; Estech, Inc.; Kaiser Aluminum & Chemical Corporation; Kerr-McGee Inc.; PPG Industries, Inc.; The Williams Companies and certain other private parties. Our subsidiaries have already received and anticipate receiving amounts pursuant to the indemnification agreements for certain of their expenses incurred to date as well as future anticipated expenditures. Potential indemnification is not considered in our established accruals.

Phosphate Mine Permitting in Florida

Denial of the permits sought at any of our mines, issuance of the permits with cost-prohibitive conditions, or substantial delays in issuing the permits, legal actions that prevent us from relying on permits or revocation of permits may create challenges for us to mine the phosphate rock required to operate our Florida and Louisiana phosphate plants at desired levels or increase our costs in the future.

The Altman Extension of the Four Corners Mine. The Army Corps of Engineers (the “Corps”) issued a federal wetlands permit under the Clean Water Act (the “CWA”) for mining the Altman Extension (the “Altman Extension”) of our Four Corners phosphate rock mine in central Florida in May 2008. The Sierra Club, Inc. (the “Sierra Club”), Manasota-88, Inc. (“Manasota-88”), Gulf Restoration Network, Inc., People for Protecting Peace River, Inc. (“People for Protecting Peace River”) and the Environmental Confederation of Southwest Florida, Inc. sued the Corps in the United States District Court for the Middle District of Florida, Jacksonville Division (the “Jacksonville District Court”), seeking to vacate our permit to mine the Altman Extension (the “Altman Extension Permit Litigation”). Mining on the Altman Extension commenced and approximately 600 acres of the Altman Extension were mined and/or disturbed. The remaining approximately 1,200 acres of the Altman extension of our Four Corners mine are not currently in our near term mining plan. In a June 26, 2012 order, the Jacksonville District Court declared the parties’ pending motions for summary judgment moot and

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requested rebriefing by all parties. The plaintiffs have filed a new motion for summary judgment, and we and the Corps have filed our respective responses and cross-motions for summary judgment. We believe that the permit was issued in accordance with all applicable requirements and that it will ultimately be upheld.

Central Florida Phosphate District Area-Wide Environmental Impact Statement. In fiscal 2011, the Corps notified us that it planned to conduct an area-wide environmental impact statement (“AEIS”) for the central Florida phosphate district. On June 1, 2012, the Corps published notice of availability of the draft AEIS in the Federal Register and announced that it would accept public comment on the draft AEIS through July 31, 2012. We, along with other members of the public, submitted comments for the Corps to consider as it completed the final AEIS. The Corps issued the final AEIS on April 25, 2013. The final AEIS includes information on environmental impacts upon which the Corps will rely in its consideration of our pending federal wetlands permits for our future Ona and DeSoto mines and an extension of our Wingate mine. The Corps has announced that it will issue an addendum to the AEIS to provide a Spanish language version of the Executive Summary section of the final AEIS and to address several minor technical questions raised by commenters. We do not expect that issuance of the addendum will delay our development of permit applications.

Potash Antitrust Litigation

On September 11, 2008, separate complaints (together, the “September 11, 2008 Cases”) were filed in the United States District Courts for the District of Minnesota (the “Minn-Chem Case”) and the Northern District of Illinois (the “Gage’s Fertilizer Case”), on October 2, 2008 another complaint (the “October 2, 2008 Case”) was filed in the United States District Court for the Northern District of Illinois, and on November 10, 2008 and November 12, 2008, two additional complaints (together, the “November 2008 Cases” and collectively with the September 11, 2008 Cases and the October 2, 2008 Case, the “Direct Purchaser Cases”) were filed in the United States District Court for the Northern District of Illinois (the “Northern Illinois District Court”) by Minn-Chem, Inc., Gage’s Fertilizer & Grain, Inc., Kraft Chemical Company, Westside Forestry Services, Inc. d/b/a Signature Lawn Care, and Shannon D. Flinn, respectively, against The Mosaic Company, Mosaic Crop Nutrition, LLC and a number of unrelated defendants that allegedly sold and distributed potash throughout the United States. On November 13, 2008, the plaintiffs in the cases in the United States District Court for the Northern District of Illinois filed a consolidated class action complaint against the defendants, and on December 2, 2008 the Minn-Chem Case was consolidated with the Gage’s Fertilizer Case. On April 3, 2009, an amended consolidated class action complaint was filed on behalf of the plaintiffs in the Direct Purchaser Cases. The amended consolidated complaint added Thomasville Feed and Seed, Inc. as a named plaintiff, and was filed on behalf of the named plaintiffs and a purported class of all persons who purchased potash in the United States directly from the defendants during the period July 1, 2003 through the date of the amended consolidated complaint (“Class Period”). The amended consolidated complaint generally alleged, among other matters, that the defendants: conspired to fix, raise, maintain and stabilize the price at which potash was sold in the United States; exchanged information about prices, capacity, sales volume and demand; allocated market shares, customers and volumes to be sold; coordinated on output, including the limitation of production; and fraudulently concealed their anticompetitive conduct. The plaintiffs in the Direct Purchaser Cases generally sought injunctive relief and to recover unspecified amounts of damages, including treble damages, arising from defendants’ alleged combination or conspiracy to unreasonably restrain trade and commerce in violation of Section 1 of the Sherman Act. The plaintiffs also sought costs of suit, reasonable attorneys’ fees and pre-judgment and post-judgment interest.

On September 15, 2008, separate complaints were filed in the United States District Court for the Northern District of Illinois by Gordon Tillman (the “Tillman Case”); Feyh Farm Co. and William H. Coaker Jr. (the “Feyh Farm Case”); and Kevin Gillespie (the “Gillespie Case;” the Tillman Case and the Feyh Farm Case together with the Gillespie case being collectively referred to as the “Indirect Purchaser Cases;” and the Direct Purchaser Cases together with the Indirect Purchaser Cases being collectively referred to as the “Potash Antitrust Cases”). The defendants in the Indirect Purchaser Cases were generally the same as those in the Direct Purchaser Cases. On November 13, 2008, the initial plaintiffs in the Indirect Purchaser Cases and David Baier, an additional named plaintiff, filed a consolidated class action complaint. On April 3, 2009, an amended consolidated class action complaint was filed on behalf of the plaintiffs in the Indirect Purchaser Cases. The factual allegations in the

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amended consolidated complaint were substantially identical to those summarized above with respect to the Direct Purchaser Cases. The amended consolidated complaint in the Indirect Purchaser Cases was filed on behalf of the named plaintiffs and a purported class of all persons who indirectly purchased potash products for end use during the Class Period in the United States, any of 20 specified states and the District of Columbia defined in the consolidated complaint as “Indirect Purchaser States,” any of 22 specified states and the District of Columbia defined in the consolidated complaint as “Consumer Fraud States”, and/or 48 states and the District of Columbia and Puerto Rico defined in the consolidated complaint as “Unjust Enrichment States.” The plaintiffs generally sought injunctive relief and to recover unspecified amounts of damages, including treble damages for violations of the antitrust laws of the Indirect Purchaser States where allowed by law, arising from defendants’ alleged continuing agreement, understanding, contract, combination and conspiracy in restraint of trade and commerce in violation of Section 1 of the Sherman Act, Section 16 of the Clayton Act, the antitrust, or unfair competition laws of the Indirect Purchaser States and the consumer protection and unfair competition laws of the Consumer Fraud States, as well as restitution or disgorgement of profits, for unjust enrichment under the common law of the Unjust Enrichment States, and any penalties, punitive or exemplary damages and/or full consideration where permitted by applicable state law. The plaintiffs also sought costs of suit and reasonable attorneys’ fees where allowed by law and pre-judgment and post-judgment interest.

On June 15, 2009, we and the other defendants filed motions to dismiss the complaints in the Potash Antitrust Cases. On November 3, 2009, the court granted our motions to dismiss the complaints in the Indirect Purchaser Cases except (a) for plaintiffs residing in Michigan and Kansas, claims for alleged violations of the antitrust or unfair competition laws of Michigan and Kansas, respectively, and (b) for plaintiffs residing in Iowa, claims for alleged unjust enrichment under Iowa common law. The court denied our and the other defendants’ other motions to dismiss the Potash Antitrust Cases, including the defendants’ motions to dismiss the claims under Section 1 of the Sherman Act for failure to plead evidentiary facts which, if true, would state a claim for relief under that section. The court, however, stated that it recognized that the facts of the Potash Antitrust Cases present a difficult question under the pleading standards enunciated by the U.S. Supreme Court for claims under Section 1 of the Sherman Act, and that it would consider, if requested by the defendants, certifying the issue for interlocutory appeal. On January 13, 2010, at the request of the defendants, the court issued an order certifying for interlocutory appeal the issues of (i) whether an international antitrust complaint states a plausible cause of action where it alleges parallel market behavior and opportunities to conspire; and (ii) whether a defendant that sold product in the United States with a price that was allegedly artificially inflated through anti-competitive activity involving foreign markets, engaged in ‘conduct involving import trade or import commerce’ under applicable law. On September 23, 2011, the United States Court of Appeals for the Seventh Circuit (the “Seventh Circuit”) vacated the district court’s order denying the defendants’ motion to dismiss and remanded the case to the district court with instructions to dismiss the plaintiffs’ Sherman Act claims. On December 2, 2011, the Seventh Circuit vacated its September 23, 2011 order and on June 27, 2012, the Seventh Circuit affirmed the order of the Northern Illinois District Court to deny the defendants’ motion to dismiss the plaintiffs’ claims. The decision was not a ruling on the merits of the case, but the Seventh Circuit’s decision allowed pretrial discovery to proceed in this matter, and the Northern Illinois District Court scheduled trial to begin February 10, 2014. We sought U.S. Supreme Court review of the Seventh Circuit’s decision.

On January 30, 2013, we entered into agreements to settle the Potash Antitrust Cases for an aggregate of $43.8 million. We chose to settle the Potash Antitrust Cases to avoid the significant costs, burden and distraction of protracted litigation and we did not admit any wrongdoing. Following preliminary approval by the Northern Illinois District Court on January 30, 2013, we funded the settlement subject to final court approval. On June 12, 2013, the Northern Illinois District Court entered an order of final approval of the settlement. The majority of the settlement was recorded in the third quarter of fiscal year 2013.

MicroEssentials^® Patent Lawsuit

On January 9, 2009, John Sanders and Specialty Fertilizer Products, LLC filed a complaint against Mosaic, Mosaic Fertilizer, LLC, Cargill, Incorporated and Cargill Fertilizer, Inc. in the United States District Court for

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the Western District of Missouri (the “Missouri District Court”). The complaint alleges that our production of MicroEssentials^® SZ, one of several types of the MicroEssentials^® value-added ammoniated phosphate crop nutrient products that we produce, infringes on a patent held by the plaintiffs since 2001. Plaintiffs have since asserted that other MicroEssentials^® products also infringe the patent. Plaintiffs seek to enjoin the alleged infringement and to recover an unspecified amount of damages and attorneys’ fees for past infringement. Our answer to the complaint responds that the plaintiffs’ patent is invalid and we have counterclaimed that the plaintiffs have engaged in inequitable conduct.

The Missouri District Court stayed the lawsuit pending an ex parte reexamination of plaintiffs’ patent claims by the U.S. Patent and Trademark Office (the “PTO”). On September 12, 2012, Shell Oil Company (“Shell”) filed an inter parties reexamination request which in part asserted that the claims as amended and added in connection with the ex parte reexamination are unpatentable. On October 4, 2012, the PTO issued an Ex Parte Reexamination Certificate in which certain claims of the plaintiffs’ patent were cancelled, disclaimed and amended, and new claims were added. Plaintiffs have filed a motion with the Missouri District Court requesting that the stay of the lawsuit be lifted, and we have opposed that motion. On November 28, 2012, the PTO granted Shell’s request for an inter parties reexamination. On December 11, 2012, as part of that reexamination, the PTO issued an initial rejection of all of plaintiffs’ remaining patent claims. Final rejection by the PTO or further amendment by the plaintiffs of all or part of the remaining patent claims as part of the reexamination could limit the claims the plaintiffs can assert against us or their remedies against us.

We believe that the plaintiffs’ allegations are without merit and intend to defend vigorously against them. At this stage of the proceedings, we cannot predict the outcome of this litigation, estimate the potential amount or range of loss or determine whether it will have a material effect on our results of operations, liquidity or capital resources.

Brazil Tax Contingencies

Our Brazilian subsidiary is engaged in a number of judicial and administrative proceedings relating to various non-income tax matters. We estimate that our maximum potential liability with respect to these matters is approximately $97 million. Approximately $55 million of the maximum potential liability relates to PIS and Cofins tax credit cases while the majority of the remaining amount relates to various other non-income tax cases such as value added taxes. In the event that the Brazilian government was to prevail in connection with all judicial and administrative matters involving us and considering the amount of judicial deposits made, our maximum cash tax liability with respect to these matters would be approximately $96 million. Based on the current status of similar tax cases involving unrelated taxpayers, we believe we have recorded adequate accruals, which are immaterial, for the probable liability with respect to these Brazilian judicial and administrative proceedings.

Other Claims

We also have certain other contingent liabilities with respect to judicial, administrative and arbitration proceedings and claims of third parties, including tax matters, arising in the ordinary course of business. We do not believe that any of these contingent liabilities will have a material adverse impact on our business or financial condition, results of operations, and cash flows.

22. RELATED PARTY TRANSACTIONS

On May 25, 2011, Cargill, our former majority stockholder, exchanged its 64% stake in our company with certain Cargill stockholders and debt holders. For further discussion of these exchanges as part of the Cargill Transaction, see Note 2 of the Notes to Consolidated Financial Statements. Until these exchanges, Cargill was considered a related party due to its ownership interest in us.

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We engage in various transactions, arrangements and agreements with Cargill. While Cargill was considered a related party, a Cargill transactions subcommittee of the corporate governance and nominating committee of our board of directors, comprised solely of independent directors, was responsible for reviewing and approving these transactions, arrangements and agreements. Our related person transactions approval policy provided for the delegation of approval authority for certain transactions with Cargill, other than those of the type described in such related person transactions approval policy, to an internal committee comprised of senior managers. The internal management committee was required to report its activities to the Cargill transactions subcommittee on a periodic basis.

Cargill made equity contributions of $18.5 million to us in fiscal 2011.

In summary, the Consolidated Statements of Earnings included the following transactions with Cargill, while Cargill was considered a related party:

(in millions)	Year ended May 31, 2011
Transactions with Cargill included in net sales	$	238.1
Transactions with Cargill included in cost of goods sold		146.8
Transactions with Cargill included in selling, general and administrative expenses		6.1
Interest income received from Cargill		0.2

We have also entered into transactions and agreements with certain of our non-consolidated companies. As of May 31, 2013 and 2012, the net amount due from our non-consolidated companies totaled $145.8 million and $134.8 million, respectively.

The Consolidated Statements of Earnings included the following transactions with our non-consolidated companies:

	Years ended May 31,
(in millions)	2013		2012		2011
Transactions with non-consolidated companies included in net sales	$	1,263.9	$	1,321.2	$	1,015.7
Transactions with non-consolidated companies included in cost of goods sold		632.0		557.3		511.3

23. BUSINESS SEGMENTS

The reportable segments are determined by management based upon factors such as products and services, production processes, technologies, market dynamics, and for which segment financial information is available for our chief operating decision maker.

For a description of our business segments see Note 1 of our Notes to Consolidated Financial Statements. We evaluate performance based on the operating earnings of the respective business segments, which includes certain allocations of corporate selling, general and administrative expenses. The segment results may not represent the actual results that would be expected if they were independent, stand-alone businesses. Corporate, Eliminations and Other primarily represents unallocated corporate office activities and eliminations. All intersegment transactions are eliminated within Corporate, Eliminations and other.

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Segment information for fiscal 2013, 2012 and 2011 is as follows:

(in millions)	Phosphates			Potash		Corporate, Eliminations and Other			Total
2013
Net sales to external customers	$	6,494.6		$	3,469.1	$	10.4		$	9,974.1
Intersegment net sales		-			60.2		(60.2	)		-
Net sales		6,494.6			3,529.3		(49.8	)		9,974.1
Gross margin		1,162.2			1,611.3		(13.3	)		2,760.2
Operating earnings (loss)		848.1			1,393.0		(31.5	)		2,209.6
Capital expenditures		427.5			1,017.7		143.1			1,588.3
Depreciation, depletion and amortization expense		287.3			301.9		15.6			604.8
Equity in net earnings of nonconsolidated companies		16.4			-		1.9			18.3
2012
Net sales to external customers	$	7,839.2		$	3,263.1	$	5.5		$	11,107.8
Intersegment net sales		-			38.2		(38.2	)		-
Net sales		7,839.2			3,301.3		(32.7	)		11,107.8
Gross margin		1,466.9			1,622.0		(3.9	)		3,085.0
Operating earnings (loss)		1,179.1			1,457.3		(25.3	)		2,611.1
Capital expenditures		407.9			1,171.4		60.0			1,639.3
Depreciation, depletion and amortization expense		263.9			233.1		11.1			508.1
Equity in net earnings of nonconsolidated companies		11.9			-		1.4			13.3
2011
Net sales to external customers	$	6,895.2		$	3,028.3	$	14.3		$	9,937.8
Intersegment net sales		-			32.7		(32.7	)		-
Net sales		6,895.2			3,061.0		(18.4	)		9,937.8
Gross margin		1,654.0			1,469.0		(1.2	)		3,121.8
Operating earnings (loss)		1,322.0			1,352.5		(10.3	)		2,664.2
Capital expenditures		306.7			906.9		49.6			1,263.2
Depreciation, depletion and amortization expense		248.1			188.9		10.4			447.4
Equity in net earnings (loss) of nonconsolidated companies		(8.8	)		-		3.8			(5.0	)
Total assets as of May 31, 2013	$	9,930.9		$	9,759.8	$	(1,604.7	)	$	18,086.0
Total assets as of May 31, 2012		9,123.7			11,324.8		(3,758.1	)		16,690.4

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Financial information relating to our operations by geographic area is as follows:

	Years Ended May 31,
(in millions)	2013		2012		2011
Net sales (a):
Brazil	$	2,069.3	$	2,161.6	$	1,810.1
Canpotex (b)		1,239.8		1,298.9		992.9
Canada		686.3		786.3		629.9
India		475.2		1,579.7		1,565.9
Argentina		258.3		266.7		233.3
Japan		188.2		177.5		166.1
Australia		177.5		290.1		237.8
China		173.3		160.4		115.9
Colombia		143.5		155.9		157.6
Mexico		128.9		90.5		101.7
Chile		116.5		121.1		115.9
Thailand		88.9		94.0		91.1
Peru		56.9		95.1		6.6
Other		271.7		209.3		193.7
Total international countries		6,074.3		7,487.1		6,418.5
United States		3,899.8		3,620.7		3,519.3
Consolidated	$	9,974.1	$	11,107.8	$	9,937.8

^(a)  Revenues are attributed to countries based on location of customer.

^(b)  The export association of the Saskatchewan potash producers.

(in millions)	May 31, 2013		May 31, 2012
Long-lived assets:
Canada	$	5,264.8	$	4,593.2
Brazil		178.1		158.6
Other		52.1		60.5
Total international countries		5,495.0		4,812.3
United States		3,653.2		3,402.0
Consolidated	$	9,148.2	$	8,214.3

Excluded from the table above as of May 31, 2013 and 2012, are goodwill of $1,844.6 million and $1,844.4 million and deferred income taxes of $212.7 million and $50.6 million, respectively.

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Net sales by product type for fiscal 2013, 2012 and 2011 are as follows:

(in millions)	2013		2012		2011
Sales by product type:
Phosphate Crop Nutrients	$	4,106.1	$	5,418.4	$	4,822.4
Potash Crop Nutrients		3,434.5		3,174.4		3,002.8
Crop Nutrient Blends		1,472.3		1,517.1		1,252.5
Other (a)		961.2		997.9		860.1
	$	9,974.1	$	11,107.8	$	9,937.8

(a) Includes sales for animal feed ingredients and industrial potash.

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Quarterly Results (Unaudited)

In millions, except per share amounts and common stock prices

	Quarter
	First		Second		Third		Fourth		Year
2013
Net sales	$	2,505.1	$	2,536.2	$	2,240.6	$	2,692.2	$	9,974.1
Gross margin		747.3		675.9		568.4		768.6		2,760.2
Operating earnings		610.2		559.6		419.1		620.7		2,209.6
Net earnings attributable to Mosaic		429.4		628.8		344.6		485.9		1,888.7
Basic net earnings per share attributable to Mosaic	$	1.01	$	1.48	$	0.81	$	1.14	$	4.44
Diluted net earnings per share attributable to Mosaic		1.01		1.47		0.81		1.14		4.42
Common stock prices:
High	$	59.95	$	61.98	$	63.46	$	64.65
Low		44.43		48.29		52.65		56.90
2012
Net sales	$	3,083.3	$	3,014.5	$	2,189.5	$	2,820.5	$	11,107.8
Gross margin		848.2		881.2		521.8		833.8		3,085.0
Operating earnings		729.6		797.0		413.7		670.8		2,611.1
Net earnings attributable to Mosaic		526.0		623.6		273.3		507.3		1,930.2
Basic net earnings per share attributable to Mosaic	$	1.18	$	1.41	$	0.64	$	1.19	$	4.44
Diluted net earnings per share attributable to Mosaic		1.17		1.40		0.64		1.19		4.42
Common stock prices:
High	$	74.31	$	72.35	$	59.75	$	59.80
Low		55.70		44.86		46.50		45.58

The number of holders of record of our common stock as of July 10, 2013 was 4,125.

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The following table presents our selected financial data. This information has been derived from our audited consolidated financial statements. This historical data should be read in conjunction with the Consolidated Financial Statements and the related notes and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

Five Year Comparison

In millions, except per share amounts

	Years Ended May 31,
	2013			2012			2011			2010			2009
Statements of Operations Data:
Net sales	$	9,974.1		$	11,107.8		$	9,937.8		$	6,759.1		$	10,298.0
Cost of goods sold		7,213.9			8,022.8			6,816.0			5,065.8			7,148.1
Lower of cost or market write-down		-			-			-			-			383.2
Gross margin		2,760.2			3,085.0			3,121.8			1,693.3			2,766.7
Selling, general and administrative expenses		427.3			410.1			372.5			360.3			321.4
Other operating expenses		123.3			63.8			85.1			62.2			44.4
Operating earnings		2,209.6			2,611.1			2,664.2			1,270.8			2,400.9
Interest income (expense), net		18.8			18.7			(5.1	)		(49.6	)		(43.3	)
Foreign currency transaction (loss) gain		(15.9	)		16.9			(56.3	)		(32.4	)		(131.8	)
Gain on sale of equity investment (a)		-			-			685.6			-			673.4
Other income (expense)		2.0			(17.8	)		(17.1	)		0.9			6.5
Earnings from consolidated companies before income taxes		2,214.5			2,628.9			3,271.3			1,189.7			2,905.7
Provision for income taxes (b)		341.0			711.4			752.8			347.3			649.3
Earnings from consolidated companies		1,873.5			1,917.5			2,518.5			842.4			2,256.4
Equity in net earnings (loss) of nonconsolidated companies		18.3			13.3			(5.0	)		(10.9	)		100.1
Net earnings including non-controlling interests		1,891.8			1,930.8			2,513.5			831.5			2,356.5
Less: Net earnings (loss) attributable to non-controlling interests		3.1			0.6			(1.1	)		4.4			6.3
Net earnings attributable to Mosaic	$	1,888.7		$	1,930.2		$	2,514.6		$	827.1		$	2,350.2
Earnings per common share attributable to Mosaic:
Basic net earnings per share	$	4.44		$	4.44		$	5.64		$	1.86		$	5.29
Diluted net earnings per share	$	4.42		$	4.42		$	5.62		$	1.85		$	5.27
Average shares outstanding:
Basic weighted average number of shares outstanding		425.7			435.2			446.0			445.1			444.3
Diluted weighted average number of shares outstanding		426.9			436.5			447.5			446.6			446.2
Balance Sheet Data (at period end):
Cash and cash equivalents	$	3,697.1		$	3,811.0		$	3,906.4		$	2,523.0		$	2,703.2
Total assets		18,086.0			16,690.4			15,786.9			12,707.7			12,676.2
Total long-term debt (including current maturities)		1,010.5			1,010.5			809.3			1,260.8			1,299.8
Total liabilities		4,643.1			4,691.0			4,125.0			3,959.3			4,161.0
Total equity		13,442.9			11,999.4			11,661.9			8,748.4			8,515.2
Other Financial Data:
Depreciation, depletion and amortization	$	604.8		$	508.1		$	447.4		$	445.0		$	360.5
Net cash provided by operating activities		1,887.5			2,705.8			2,426.7			1,356.0			1,242.6
Capital expenditures		1,588.3			1,639.3			1,263.2			910.6			781.1
Dividends per share (c)		1.00			0.275			0.20			1.50			0.20

F-95

^(a)  In fiscal 2011, we recorded a $685.6 million pre-tax gain on the sale of our equity method investment in Fosfertil. We recorded a $673.4 million pre-tax gain on the sale of our equity method investment in Saskferco in fiscal 2009. See further discussion in Note 9 to the Consolidated Financial Statements.

^(b)  Fiscal 2013 includes a discrete income tax benefit of $179.3 million associated with our non-U.S. subsidiaries due to the resolution of certain tax matters.

^(c)  In fiscal 2013 we increased our annual dividend to $1.00 per share. In the fourth quarter of fiscal 2012, we paid a quarterly dividend of $0.125, which represents a 150 percent increase over the Company’s previous dividend rate. In fiscal 2010, we paid a special dividend of $1.30 per share in addition to quarterly dividends of $0.05 per share.

F-96

SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS

For the Years ended May 31, 2013, 2012, and 2011

In millions

Column A	Column B		Column C						Column D			Column E
			Additions
Description	Balance Beginning of Period		Charges or (Reductions) to Costs and Expenses (c)			Charges or (Reductions) to Other  Accounts (a)			Deductions			Balance at End of Period(b)
Allowance for doubtful accounts, deducted from accounts receivable in the balance sheet:
Year ended May 31, 2011		28.7		(3.0	)		(0.1	)		(2.0	)		23.6
Year ended May 31, 2012		23.6		-			(5.1	)		(0.1	)		18.4
Year ended May 31, 2013		18.4		(1.0	)		(1.3	)		(0.1	)		16.0
Income tax valuation allowance, related to deferred income taxes
Year ended May 31, 2011		157.1		23.8			36.5			(8.2	)		209.2
Year ended May 31, 2012		209.2		6.2			(35.2	)		-			180.2
Year ended May 31, 2013		180.2		(77.7	)		(8.9	)		-			93.6

^(a)  For the years ended May 31, 2013, 2012 and 2011, the income tax valuation allowance adjustment was recorded to accumulated other comprehensive income and deferred taxes.

^(b)  Allowance for doubtful accounts balance includes $11.3 million, $13.5 million and $20.4 million of allowance on long-term receivables recorded in other long term assets for the years ended May 31, 2013, 2012 and 2011, respectively.

^(c)  For the year ended May 31, 2013, the decrease of $77.7 million in income tax valuation allowance is offset by the recognition of a corresponding U.S. deferred tax liability associated with the anticipated reduction in foreign tax credits and, therefore, did not impact our tax expense in Fiscal 2013.

F-97

Management’s Report on Internal Control Over Financial Reporting

The Company’s management is responsible for establishing and maintaining effective internal control over financial reporting, as defined in Rule 13a-15(f) under the Securities Exchange Act of 1934. The Company’s internal control system is a process designed to provide reasonable assurance to our management, Board of Directors and stockholders regarding the reliability of financial reporting and the preparation and fair presentation of our consolidated financial statements for external reporting purposes in accordance with U.S. generally accepted accounting principles (U.S. GAAP), and includes those policies and procedures that:

• Pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets;

• Provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in conformity with U.S. GAAP, and that receipts and expenditures are being made only in accordance with authorizations from our management and Board of Directors; and

• Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of the Company’s internal control over financial reporting as of May 31, 2013. In making this assessment, management used the control criteria framework of the Committee of Sponsoring Organizations (COSO) of the Treadway Commission published in its report entitled Internal Control—Integrated Framework (1992). Based on its evaluation, management concluded that the Company’s internal control over financial reporting was effective as of May 31, 2013. KPMG LLP, the independent registered public accounting firm that audited the financial statements included in this annual report, has issued an auditors’ report on the Company’s internal control over financial reporting as of May 31, 2013.

F-98

EX-10.III.D

Exhibit 10.iii.d.

Pursuant to the Management Incentive Plan (“MIP”) of The Mosaic Company (the “Company”), key managers of the Company and its subsidiaries, including executive officers, are eligible for annual cash incentive compensation based upon the level of attainment of business performance goals that are pre-established by the Board of Directors of the Company, upon the recommendation of the Compensation Committee. The incentive measures for the transition period beginning June 1, 2013 through December 31, 2013 (the “2013 Stub Period”) are based on financial results and operational excellence measures.

For executive officers, the weighting of the incentive measures is 50% for the financial results measure and 50% for the operational excellence measures.

The financial results measure is based on a percentage, or sharing rate, of consolidated operating earnings before any restructuring charges, non-cash write-offs of long-term assets and expenses related to certain merger and acquisition activities. The sharing rate varies based upon the level of the Company’s return on invested capital (“ROIC”). No payout is made under the Operating Earnings incentive measure if ROIC does not exceed a threshold level.

The operational excellence measures are based on:

(i) Controllable operating costs per tonne of products sold by the Company’s Phosphates and Potash business segments. This measure has a 25% weighting for executive officers. Controllable operating costs are based on the level of cost of goods sold at specified levels of sales tonnes plus adjusted selling, general and administrative expenses and minus the costs of purchased commodities, depreciation, depletion and amortization, brine inflow costs, income-based royalties and taxes and costs paid by third parties, unrealized derivative gains and losses and the Canpotex Limited profit in inventory elimination.

(ii) Safety, which has an overall weighting of 12.5%. The safety measure is based on two equally-weighted factors: (1) the OSHA recordable injury frequency rate for employees and contractors and (2) the OSHA lost-time injury frequency rate for employees and contractors.

(iii) Adjusted selling, general and administrative expenses. This measure has a 12.5% weighting for executive officers. Adjusted selling, general and administrative expenses are selling, general and administrative expenses exclusive of incentive and other employee benefit expenses, restructuring charges and expenses related to certain merger and acquisition activities.

Threshold, target and maximum payout levels are set for each operational excellence measure based upon the extent to which the specified performance goals are attained.

The maximum payout percent for Management Incentive Plan awards for the 2013 Stub Period is 250% of the target award.

EX-10.III.X

Exhibit 10.iii.x.

FORM OF

INDIVIDUAL NONQUALIFIED PENSION AGREEMENT

This agreement (the “Agreement”) between MOS HOLDINGS INC. (the “Company”), and [            ] (the “Participant”), and the Participant’s employer (which is either the Company or a subsidiary of the Company) sets forth the terms of deferred compensation to be paid to the Participant.

SECTION 1

INTRODUCTION AND DEFINITIONS

1.1. Preamble. The Participant is a member of management of the employer, a highly compensated employee, or both.

1.2. Definitions. When terms are used herein with initial capital letters, they shall have the meanings designated by the associated definition.

SECTION 2

ELIGIBILITY AND PARTICIPATION

The only individual eligible under this Agreement is the Participant named in the preamble.

SECTION 3

CONTRIBUTIONS AND ALLOCATION THEREOF

The Company may but is not required to make contributions under the Agreement.

SECTION 4

INVESTMENT

If the Company makes contributions under a rabbi trust or otherwise makes contributions to pay the benefits due under this Agreement, it may invest those contributions. The Participant, however, is not entitled to any investment earnings but rather only the amounts specified in Section 7.

SECTION 5

VESTING

The Participant is fully vested in the benefit specified in Section 7.

SECTION 6

UNFUNDED AGREEMENT

The obligations to make payments under this Agreement constitute only the unsecured (but legally enforceable) promises of the Company to make such payments. The Participant shall not have any lien, prior claim or other security interest in any property of the Company and its affiliates. The Company shall have no obligation to establish or maintain any fund, trust or account (other than a bookkeeping account) for the purpose of funding or paying the benefits promised under this Agreement. If such a fund, trust or account is established, the property therein that is allocable to the Company shall remain the sole and exclusive property of the Company.

SECTION 7

DISTRIBUTIONS

7.1. Distribution.

7.1.1. Distribution in Cash. All distributions under this Agreement shall be made in cash (all references to “Dollars” shall be to U.S. dollars).

7.1.2. Distribution to Participant. If the Participant terminates employment during the year in which the Participant has attained the specified age, the Company will pay the amount specified for that age in a single lump sum cash payment.

(a) Participant Terminates Employment on or after Attaining Age 55 but prior to Attaining Age 56. If the Participant terminates employment on or after attaining age 55 but prior to attaining age 56, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(b) Participant Terminates Employment on or after Attaining Age 56 but prior to Attaining Age 57. If the Participant terminates employment on or after attaining age 56 but prior to attaining age 57, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(c) Participant Terminates Employment on or after Attaining Age 57 but prior to Attaining Age 58. If the Participant terminates employment on or after attaining age 57 but prior to attaining age 58, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(d) Participant Terminates Employment on or after Attaining Age 58 but prior to Attaining Age 59. If the Participant terminates employment on or after attaining age 58 but prior to attaining age 59, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(e) Participant Terminates Employment on or after Attaining Age 59 but prior to Attaining Age 60. If the Participant terminates employment on or after attaining age 59 but prior to attaining age 60, then the Company will pay the Participant [             Thousand Dollars ($    ,000) (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

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(f) Participant Terminates Employment on or after Attaining Age 60 but prior to Attaining Age 61. If the Participant terminates employment on or after attaining age 60 but prior to attaining age 61, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(g) Participant Terminates Employment on or after Attaining Age 61 but prior to Attaining Age 62. If the Participant terminates employment on or after attaining age 61 but prior to attaining age 62, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(h) Participant Terminates Employment on or after Attaining Age 62 but prior to Attaining Age 63. If the Participant terminates employment on or after attaining age 62 but prior to attaining age 63, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(i) Participant Terminates Employment on or after Attaining Age 63 but prior to Attaining Age 64. If the Participant terminates employment on or after attaining age 63 but prior to attaining age 64, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(j) Participant Terminates Employment on or after Attaining Age 64 but prior to Attaining Age 65. If the Participant terminates employment on or after attaining age 64 but prior to attaining age 65, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

(k) Participant Terminates Employment on or after Attaining Age 65. If the Participant terminates employment on or after attaining age 65, then the Company will pay the Participant [            Thousand Dollars ($    ,000)] (reduced by the amount of any applicable payroll, withholding and other taxes) on the first day of the month that is seven (7) months after the date the Participant terminates employment.

7.1.3. Distribution to Beneficiary. If the Participant dies after attaining one of ages specified above but before payment for attainment of that age may be made to the Participant, the payment shall be made to the Participant’s Beneficiary.

7.1.4. Taxation of Distribution. The Participant’s benefit shall be subject to income and employment taxes at the time of vesting, or such earlier date as provided under the applicable tax laws. The Participant’s benefit shall also be subject to applicable state taxes.

7.2. Beneficiary. The term “Beneficiary” shall have the meaning provided in this Section. If a Participant is married, the Participant’s Beneficiary shall mean the Participant’s spouse. If a Participant is single, the Participant’s Beneficiary shall mean the Participant’s estate. If a Beneficiary who is receiving benefits dies, all benefits that were payable to such Beneficiary shall then be payable to the estate of that Beneficiary.

3

SECTION 8

SPENDTHRIFT PROVISION

No Participant or Beneficiary shall have any transmissible interest in any benefit nor shall any Participant or Beneficiary have any power to anticipate, alienate, dispose of, pledge or encumber the same while it is in the possession or control of the Company, nor shall the Company recognize any assignment thereof, either in whole or in part, nor shall the benefit be subject to attachment, garnishment, execution following judgment or other legal process.

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SECTION 9

AMENDMENT

The Company reserves the power to amend this Agreement either prospectively or retroactively or both in any manner necessary to preserve the essential nature of the Agreement and as need be to respond to developments in the law by action of the Company’s Chief Executive Officer (“CEO”) or the Company’s Executive Vice president and General Counsel (“General Counsel”) (each of which is an “Authorized Officer”). If changes in the law mean that the payments under this Agreement would result in significant additional taxation to the Participant, the Company may terminate this Agreement by action of an Authorized Officer.

SECTION 10

DETERMINATIONS — CLAIM PROCEDURES

10.1. Determination. An Authorized Officer shall have the discretion, authority and responsibility to interpret and construe this Agreement and all relevant documents and information, and to determine all factual and legal questions under the Agreement, including but not limited to the entitlement of all persons to benefits and the amounts of their benefits. An Authorized Officer shall make such determinations as may be required from time to time in the administration of this Agreement. This discretionary authority shall include all matters arising under this Agreement. An application for a distribution shall be considered as a claim.

10.2. Claim and Review Procedures. The provisions of Article VIII of the Mosaic Nonqualified Deferred Compensation Plan shall apply to a claim under this Agreement. The Participant is also a participant under the Mosaic Nonqualified Deferred Compensation Plan and has received a copy of the provisions of Article VIII of that plan.

10.3. Choice of Law. Except to the extent that U.S. federal law is controlling, shall be construed and enforced in accordance with the laws of the State of Minnesota (except that the state law will be applied without regard to any choice of law provisions).

10.4. Choice of Venue. Any claim or action brought with respect to this Agreement shall be brought in the U.S. federal courts of the State of Minnesota.

10.5. Service of Process. In the absence of any designation to the contrary by the Company, the General Counsel of the Company is designated as the appropriate and exclusive agent for the receipt of service of process directed to this Agreement in any legal proceeding, including arbitration, involving this Agreement

5

SECTION 11

IN GENERAL

11.1. Disclaimers.

11.1.1. Effect on Employment. Neither the terms of this Agreement nor the benefits hereunder nor the continuance thereof shall be a term of the employment of any employee, and the Company shall not be obligated to continue this Agreement. The terms of this Agreement shall not give any employee the right to be retained in the employment of the Company.

11.1.2. Sole Source of Benefits. Neither the Company nor any of its officers nor any member of its Board of Directors in any way guarantee Participant benefits against loss or depreciation, nor do they guarantee the payment of any benefit or amount which may become due and payable hereunder to any Participant, Beneficiary, or other person. Each Participant, Beneficiary, or other person entitled at any time to payments hereunder shall look solely to the assets of the Company for such payments.

11.2. Applicable Laws.

11.2.1. U.S. Citizen or U.S. Taxpayer.

(a) For a Participant who is a U.S. citizen or subject to U.S. income tax on the amount provided under this Agreement, the term “Code” shall mean the Internal Revenue Code of 1986, including applicable regulations for the specified section of the Code (including any subsequent amendment or replacement of a statutory provision or regulation). In addition, ERISA shall mean the Employee Retirement Income Security Act of 1974, including applicable regulations for the specified section of ERISA(including any subsequent amendment or replacement of a statutory provision or regulation).

(b) This Agreement is maintained with the understanding that this Agreement is an unfunded plan maintained primarily for the purpose of providing deferred compensation for a select group of management or highly compensated employees as provided in sections 201(2), 301(3) and 401(a)(1) of ERISA, and section 2520.104-23 of the regulations under ERISA. Each provision shall be interpreted and administered accordingly. The Company shall be the named fiduciary for this Agreement.

(c) This Agreement is maintained as a nonqualified deferred compensation arrangement under section 409A of the Code. Notwithstanding the foregoing, neither the Employer nor any of its officers, directors, agents or affiliates shall be obligated, directly or indirectly, to any Participant or any other person for any taxes, penalties, interest or like amounts that may be imposed on the Participant or other person on account of any amounts under this Agreement or on account of any failure to comply with the Code.

11.2.2. Australian Citizen or Australian Taxpayer. For a Participant who is an Australian taxpayer or is subject to Australian income tax on the amount provided under this Agreement, the provisions of this Agreement shall be interpreted in a manner that comply with Australian law (except for Sections 9 and 10).

CONCLUSION AND RELEASE OF CLAIMS

The Participant agrees to the terms of this Agreement. The Participant also agrees that this Agreement fulfills any obligations with respect to tax-qualified and nonqualified retirement benefits owed to the Participant by the Company (other than the Participant’s benefits (if any) under the Mosaic Investment Plan, the Mosaic Pension Plan for Salaried and Non-Union Hourly Employees, and the Mosaic Nonqualified Deferred Compensation Plan), and the Participant releases and discharges the Company, as well as all officers, directors, agents, attorneys, and employees of the Company, and its affiliates, predecessors, successors, and assigns from any and all claims, with

6

respect to such retirement benefits. The Participant has read this Agreement and had an opportunity to seek legal counsel with respect to this Agreement. The Participant agrees that this Agreement’s provisions are written in language understandable to the Participant, acknowledge the sufficiency of the consideration and obligations described herein, and hereby execute it knowingly and voluntarily with full understanding of its consequences.

With the foregoing in mind, the Participant and Company agree to this Agreement and its terms effective             , 2013.

PARTICIPANT	MOS HOLDINGS INC.
	By:
		Its: Executive Vice President,   General Counsel and Corporate Secretary
Date:             , 2013		Date:             , 2013
Subscribed and Sworn to before me
this     day of         , 2013
Notary Public

7

EX-21

Exhibit 21

Subsidiary Information for The Mosaic Company

Certain subsidiaries of the Mosaic Company are listed below. Unnamed subsidiaries, considered in the aggregate as a single subsidiary, would not constitute a “significant subsidiary” as defined in Regulation S-X promulgated by the Securities and Exchange Commission.

Subsidiary Name	Jurisdiction of Incorporation
MOS Holdings Inc.	Delaware
Mosaic Canada Crop Nutrition, LP	Manitoba
Mosaic Canada ULC	Nova Scotia
Mosaic Crop Nutrition, LLC	Delaware
Mosaic Esterhazy BV	Netherlands
Mosaic Esterhazy Holdings ULC	Alberta
Mosaic Fertilizantes do Brasil Ltda	Brazil
Mosaic Fertilizer, LLC	Delaware
Mosaic Global Dutch Holdings B.V.	Netherlands
Mosaic Global Holdings Inc.	Delaware
Mosaic Global Netherlands B.V.	Netherlands
Mosaic Global Operations Inc.	Delaware
Mosaic Potash Carlsbad Inc	Delaware
Mosaic Potash Colonsay ULC	Nova Scotia
Mosaic Potash Esterhazy Limited Partnership	Saskatchewan
Mosaic Potash Holdings N.V.	Curaçao
Mosaic USA Holdings, Inc.	Delaware
Mosaic USA LLC	Delaware
MosCo Luxembourg S.à.r.l.	Luxembourg
Phosphate Acquisition Partners LP.	Delaware
PRP-GP LLC	Delaware
The Vigoro Corporation	Delaware
CASA2 LLC	Delaware

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors

The Mosaic Company:

We consent to the incorporation by reference in the registration statements (Nos. 333-120501, 333-120503, 333-120878, and 333-142268) on Form S-8 and (Nos. 333-175087 and 333-177251) on Form S-3 of The Mosaic Company of our report dated July 16, 2013, with respect to the consolidated balance sheets of The Mosaic Company as of May 31, 2013 and 2012, and the related consolidated statements of earnings, comprehensive income, cash flows, and equity for each of the years in the three-year period ended May 31, 2013, and related financial statement schedule, and the effectiveness of internal control over financial reporting as of May 31, 2013, which report is incorporated by reference in the May 31, 2013 annual report on Form 10-K of The Mosaic Company.

/s/ KPMG LLP

Minneapolis, Minnesota

July 16, 2013

EX-24

Exhibit 24

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 11th day of July, 2013.

/s/ Phyllis E. Cochran

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 12th day of July, 2013.

/s/ Nancy E. Cooper

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 11th day of July, 2013.

/s/ Gregory L. Ebel

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 12th day of July, 2013.

/s/ William R. Graber

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 11th day of July, 2013.

/s/ Emery N. Koenig

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 9th day of July, 2013.

/s/ Robert L. Lumpkins

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 12th day of July, 2013.

/s/ Harold H. MacKay

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 15th day of July, 2013.

/s/ William T. Monahan

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 11th day of July, 2013.

/s/ James L. Popowich

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 15th day of July, 2013.

/s/ James T. Prokopanko

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 12th day of July, 2013.

/s/ David T. Seaton

POWER OF ATTORNEY

The undersigned, being a Director and/or Officer of The Mosaic Company, a Delaware corporation (the “Company”), hereby constitutes and appoints James T. Prokopanko, Lawrence W. Stranghoener and Richard L. Mack his true and lawful attorneys and agents, each with full power and authority (acting alone and without the others) to execute and deliver in the name and on behalf of the undersigned as such Director and/or Officer, the Annual Report of the Company on Form 10-K for the fiscal year ended May 31, 2013 (the “Annual Report”) under the Securities Exchange Act of 1934, as amended, and to execute and deliver any and all amendments to the Annual Report for filing with the Securities and Exchange Commission; and in connection with the foregoing, to do any and all acts and things and execute any and all instruments which such attorneys and agents may deem necessary or advisable to enable the Company to comply with the securities laws of the United States and of any state or other political subdivision thereof. The undersigned hereby grants unto such attorney and agents, and each of them, full power of substitution and revocation in the premises and hereby ratifies and confirms all that such attorneys and agents may do or cause to be done by virtue of these presents.

Dated this 14^th day of July, 2013.

/s/ Steven M. Seibert

EX-31.1

Exhibit 31.1

Certification Required by Rule 13a-14(a)

I, James T. Prokopanko, certify that:

1. I have reviewed this annual report on Form 10-K of The Mosaic Company;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls over financial reporting.

Date: July 16, 2013

/s/    James T. Prokopanko

James T. Prokopanko

Chief Executive Officer and President

The Mosaic Company

EX-31.2

Exhibit 31.2

Certification Required by Rule 13a-14(a)

I, Lawrence W. Stranghoener, certify that:

1. I have reviewed this annual report on Form 10-K of The Mosaic Company;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls over financial reporting.

Date: July 16, 2013

/s/    Lawrence W. Stranghoener

Lawrence W. Stranghoener

Executive Vice President and Chief Financial Officer

The Mosaic Company

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer Required by Rule 13a-14(b)

and Section 1350 of Chapter 63 of Title 18 of the United States Code

I, James T. Prokopanko, the Chief Executive Officer and President of The Mosaic Company, certify that (i) the Annual Report on Form 10-K for the year ended May 31, 2012 of The Mosaic Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of The Mosaic Company.

July 16, 2013

/s/    James T. Prokopanko

James T. Prokopanko

Chief Executive Officer and President

The Mosaic Company

EX-32.2

Exhibit 32.2

Certification of Chief Financial Officer Required by Rule 13a-14(b)

and Section 1350 of Chapter 63 of Title 18 of the United States Code

I, Lawrence W. Stranghoener, the Executive Vice President and Chief Financial Officer of The Mosaic Company, certify that (i) the Annual Report on Form 10-K for the year ended May 31, 2012 of The Mosaic Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of The Mosaic Company.

July 16, 2013

/s/    Lawrence W. Stranghoener

Lawrence W. Stranghoener

Executive Vice President and Chief Financial Officer

The Mosaic Company

EX-95

Exhibit 95

MINE SAFETY DISCLOSURES

The following table shows, for each of our U.S. mines that is subject to the Federal Mine Safety and Health Act of 1977 (“MSHA”), the information required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K. Section references are to sections of MSHA.

	Potash Mine		Florida Phosphate Rock Mines
Year Ended May 31, 2013	Carlsbad, New  Mexico		Four Corners		Hookers Prairie		South Fort Meade		Wingate
Section 104 citations for violations of mandatory health or safety standards that could significantly and substantially contribute to the cause and effect of a mine safety or health hazard (#)		14		15		2		3		1
Section 104(b) orders (#)		—		—		—		—		—
Section 104(d) citations and orders (#)		—		—		—		—		—
Section 110(b)(2) violations (#)		—		—		—		—		—
Section 107(a) orders (#)		—		—		—		—		—
Proposed assessments under MSHA	$	15,575	$	32,339	$	2,760	$	12,649	$	53,751
Mining-related fatalities (#)		—		—		—		—		—
Section 104(e) notice		No		No		No		No		No
Notice of the potential for a pattern of violations under Section 104(e)		No		No		No		No		No
Legal actions before the Federal Mine Safety and Health Review Commission (“FMSHRC”) initiated (#)		2		—		—		1		1
Legal actions before the FMSHRC resolved (#)		—		2		1		3		1
Legal actions pending before the FMSHRC, end of period:
Contests of citations and orders referenced in Subpart B of 29 CFR Part 2700 (#)		—		—		—		—		—
Contests of proposed penalties referenced in Subpart C of 29 CFR Part 2700 (#)		6		—		—		1		1
Complaints for compensation referenced in Subpart D of 29 CFR Part 2700 (#)		—		—		—		—		—
Complaints of discharge, discrimination or interference referenced in Subpart E of 29 CFR Part 2700 (#)		—		—		—		—		—
Applications for temporary relief referenced in Subpart F of 29 CFR Part 2700 (#)		—		—		—		—		—
Appeals of judges’ decisions or orders referenced in Subpart H of 29 CFR Part 2700 (#)		—		—		—		—		—
Total pending legal actions (#)		6		—		—		1		1

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Pension Plans and Other Benefits - Changes in Net Periodic Pension Cost (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
North American Pension Plans [Member]
Net Periodic Benefit Cost Before Settlements:
Service cost	$ 6.5	$ 5.6	$ 5.0
Interest cost	32.6	34.5	36.2
Expected return on plan assets	37.3	35.8	38.0
Less amortization of prior service cost/(credit)	1.3	1.3	0.9
Less amortization of actuarial (gain)/loss	16.1	13.4	7.4
Net periodic benefit (income) cost	19.2	19.0	11.5
Other Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income [Abstract]
Prior service cost (credit) recognized in other comprehensive income	14.1	(1.3)	4.9
Net actuarial loss (gain) recognized in other comprehensive income	(5.9)	36.3	(26.7)
Total recognized in other comprehensive income	8.2	35.0	(21.8)
North American Postretirement Benefit Plans [Member]
Net Periodic Benefit Cost Before Settlements:
Service cost	0.6	0.3	0.4
Interest cost	2.3	2.6	3.1
Expected return on plan assets	0	0	0
Less amortization of prior service cost/(credit)	(1.7)	(1.7)	(2.3)
Less amortization of actuarial (gain)/loss	(1.3)	(1.8)	(0.7)
Net periodic benefit (income) cost	(0.1)	(0.6)	0.5
Other Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income [Abstract]
Prior service cost (credit) recognized in other comprehensive income	1.7	1.7	2.3
Net actuarial loss (gain) recognized in other comprehensive income	1.9	5.8	(38.0)
Total recognized in other comprehensive income	$ 3.6	$ 7.5	$ (35.7)

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Accounting for Asset Retirement Obligations (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Asset Retirement Obligation Roll Forward Analysis [Roll Forward]
Asset retirement obligations, beginning of year	$ 600.3	$ 573.1
Liabilities incurred	38.7	27.8
Liabilities settled	73.2	98.4
Accretion expense	33.3	32.4	31.6
Revisions in estimated cash flows	59.4	65.4
Asset retirement obligations, end of year	658.5	600.3	573.1
Less current portion	83.5	87.0
Asset Retirement Obligations Noncurrent	$ 575.0	$ 513.3

XML

Accounting for Derivative Instruments and Hedging Activities (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Foreign Exchange Contract [Member] | Cost of goods sold [Member]
Derivative Instruments Gain Loss Recognized In Income Net [Abstract]
Derivative Instruments Gain Loss Recognized In Net Earnings	$ (1.6)	$ (23.9)	$ 6.8
Foreign Exchange Contract [Member] | Foreign currency transaction gain (loss) [Member]
Derivative Instruments Gain Loss Recognized In Income Net [Abstract]
Derivative Instruments Gain Loss Recognized In Net Earnings	(13.8)	(4.0)	7.9
Commodity Contract (MMbtu) [Member] | Cost of goods sold [Member]
Derivative Instruments Gain Loss Recognized In Income Net [Abstract]
Derivative Instruments Gain Loss Recognized In Net Earnings	16.1	(16.0)	8.3
Freight Contracts [Member] | Cost of goods sold [Member]
Derivative Instruments Gain Loss Recognized In Income Net [Abstract]
Derivative Instruments Gain Loss Recognized In Net Earnings	$ 0.7	$ (2.0)	$ (2.0)

XML

Pension Plans and Other Benefits - Level 3 Roll Forward (Details) (Fair Value Inputs Level 3 [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012
United States Pension Plans Of U S Entity Defined Benefit [Member]
The following table provides a reconciliation of our plan assets measured at fair value using significant unobservable inputs (Level 3) for the year ended May 31, 2011:
Beginning balance	$ 23.8	$ 22.8
Net realized and unrealized gains/(losses)	0.4	1.6
Purchases, issuances, settlements, net	(0.8)	(0.6)
Ending balance	23.4	23.8
Foreign Pension Plans Defined Benefit [Member]
The following table provides a reconciliation of our plan assets measured at fair value using significant unobservable inputs (Level 3) for the year ended May 31, 2011:
Beginning balance	6.6	7.2
Net realized and unrealized gains/(losses)	0.7	0.7
Purchases, issuances, settlements, net	(1.4)	(1.3)
Ending balance	$ 5.9	$ 6.6

XML

Contingencies (Details) (USD $)	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Applicability Impact And Conclusion Of Environmental Loss Contingencies [Abstract]
Accrual For Environmental Loss Contingencies	$ 24,700,000	$ 27,300,000
Loss Contingencies [Line Items]
Asset Retirement Obligation	658,500,000	600,300,000	573,100,000
Litigation Settlement, Gross	43,800,000
Loss Contingency, Estimate Of Possible Loss	96,000,000
Brazilian Income Tax Cases [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate Of Possible Loss	55,000,000
Unfavorable Regulatory Action [Member]
Loss Contingencies [Line Items]
Recorded Third-Party Environmental Recoveries, Undiscounted	1,500,000,000
Asset Retirement Obligation	450,000,000
Potential Assets Held In Trust	625,000,000
Future Capital Expenditures	150,000,000
Unfavorable Regulatory Action [Member] | Brazilian Income Tax Cases [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate Of Possible Loss	$ 97,000,000

XML

Cash Flow Information

12 Months Ended

May 31, 2013

Supplemental Cash Flow Elements [Abstract]

Cash Flow Supplemental Disclosures [Text Block]

8. CASH FLOW INFORMATION

Supplemental disclosures of cash paid for interest and income taxes and non-cash investing and financing information is as follows:

				Years Ended May 31,
(in millions)				2013		2012		2011
Cash paid during the period for:
	Interest		$	52.0	$	76.7	$	100.2
	Less amount capitalized			52.0		55.7		57.1
		Cash interest, net	$	-	$	21.0	$	43.1
	Income taxes		$	299.9	$	516.4	$	535.2

Acquiring or constructing property, plant and equipment by incurring a liability does not result in a cash outflow for us until the liability is paid. In the period the liability is incurred, the change in operating accounts payable on the Consolidated Statements of Cash Flows is adjusted by such amount. In the period the liability is paid, the amount is reflected as a cash outflow from investing activities. The applicable net change in operating accounts payable that was classified to investing activities on the Consolidated Statements of Cash Flows was $54.6 million, $56.7 million, and $100.1 million for fiscal 2013, 2012 and 2011respectively.

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Organization and Nature of Business (Details)	12 Months Ended
	May 31, 2013
Organization And Nature Of Business [Abstract]
Our percentage share of PhosChem's dry crop nutrient products	93.00%
Equity Method Investments [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	35.00%

XML

Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
OtherComprehensiveIncomeLossTaxParentheticalDisclosuresAbstract
Foreign currency translation adjustment, tax	$ 16.0	$ 28.0	$ 2.9
Net actuarial (loss) gain tax	$ 5.7	$ 14.6	$ 21.7

XML

Organization and Nature of Business

12 Months Ended

May 31, 2013

Organization And Nature Of Business [Abstract]

Organization and Nature of Business

1. ORGANIZATION AND NATURE OF BUSINESS

The Mosaic Company (before or after the Cargill Transaction described in Note 2, “Mosaic”, and with its consolidated subsidiaries, “we”, “us”, “our”, or the “Company”) is the parent company of the business that was formed through the business combination (“Combination”) of IMC Global Inc. and the Cargill Crop Nutrition fertilizer businesses (“CCN”) of Cargill, Incorporated and its subsidiaries (collectively, “Cargill”) on October 22, 2004.

We produce and market concentrated phosphate and potash crop nutrients. We conduct our business through wholly and majority owned subsidiaries as well as businesses in which we own less than a majority or a non-controlling interest, including consolidated variable interest entities and investments accounted for by the equity method. We are organized into the following business segments:

Our Phosphates business segment owns and operates mines and production facilities in Florida which produce concentrated phosphate crop nutrients and phosphate-based animal feed ingredients, and processing plants in Louisiana which produce concentrated phosphate crop nutrients. In fiscal 2011, the Phosphates segment acquired a 35% economic interest in a joint venture that owns the Miski Mayo Mine in Peru.

Our Phosphates segment's results also include our international distribution activities in addition to the consolidated results of Phosphate Chemicals Export Association, Inc. (“PhosChem”), a U.S. Webb-Pomerene Act association of phosphate producers that exports concentrated phosphate crop nutrient products around the world for us and PhosChem's other member. Our share of PhosChem's sales volume of dry phosphate crop nutrient products was approximately 93% for the year ended May 31, 2013.

Our Potash business segment owns and operates potash mines and production facilities in Canada and the U.S. which produce potash-based crop nutrients, animal feed ingredients and industrial products. Potash sales include domestic and international sales. We are a member of Canpotex, Limited (“Canpotex”), an export association of Canadian potash producers through which we sell our Canadian potash outside the U.S. and Canada.

Intersegment sales are eliminated within Corporate, Eliminations and Other. See Note 23of our Notes to Consolidated Financial Statements for segment results.

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Accounting for Derivative Instruments and Hedging Activities

12 Months Ended

May 31, 2013

Accounting For Derivative Instruments And Hedging Activities [Abstract]

Accounting for Derivative Instruments and Hedging Activities

15. ACCOUNTING FOR DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

We are exposed to the impact of fluctuations in the relative value of currencies, the impact of fluctuations in the purchase prices of natural gas and ammonia consumed in operations, changes in freight costs as well as changes in the market value of our financial instruments. We periodically enter into derivatives in order to mitigate our foreign currency risks and the effects of changing commodity and freight prices, but not for speculative purposes. Subsequent to May 31, 2013, we have entered into forward-starting interest rate swaps in anticipation of the future issuance of debt.

Foreign Currency Derivatives—We periodically enter into derivatives contracts in order to reduce our foreign currency exchange rate risk. We use forward contracts, zero-cost collars and futures, which typically expire within one year, to reduce the impact of foreign currency exchange risk in our cash flows, not the foreign currency volatility in our earnings. One of the primary currency exposures relates to several of our Canadian entities, whose sales are denominated in U.S. dollars, but whose costs are paid principally in Canadian dollars, which is their functional currency. Our Canadian businesses generally hedge a portion of the currency risk exposure on anticipated cash inflows and outflows. Depending on the underlying exposure, such derivatives can create additional earnings volatility because we do not use hedge accounting. We hedge certain of these risks through forward contracts and zero-cost collars. Our Brazilian operations enter into foreign currency futures traded on the Futures and Commodities Exchange—Brazil Mercantile & Futures Exchange—and also enter into forward contracts to hedge foreign currency risk. We hedge a portion of their currency risk exposure on anticipated cash inflows and outflows similar to the process in Canada. Our other foreign locations also use forward contracts to reduce foreign currency risk.

Commodity Derivatives—We enter into derivative contracts to reduce the risk of price fluctuation in the purchases of certain of our product inputs. Our commodity derivatives contracts primarily relate to purchases of natural gas. We use forward purchase contracts, swaps, and three-way collars to reduce these risks. The use of these financial instruments reduces the exposure of these risks with the intent to reduce our risk and variability.

Freight Derivatives—We enter into derivative contracts to reduce the risk of price fluctuation in the purchases of our freight. We use forward freight agreements to reduce the risk and variability of related price changes in freight. The use of these financial instruments reduces the exposure of these risks with the intent to reduce our risk and variability.

For additional disclosures about fair value measurement of derivative instruments, see Note 16 of our Notes to Consolidated Financial Statements.

As of May 31, 2013, the following is the total absolute notional volume associated with our outstanding derivative instruments:

(in millions of Units)			May 31,	May 31,
Instrument	Derivative Category	Unit of Measure	2013	2012
Foreign currency derivatives	Foreign Currency	US Dollars	1,459.7	1,869.2
Natural gas derivatives	Commodity	MMbtu	15.2	24.3
Ocean freight contracts	Freight	Tonnes	1.5	2.1

We do not apply hedge accounting treatments to our foreign currency exchange contracts, commodities contracts, or freight contracts. Unrealized gains and (losses)on foreign currency exchange contracts used to hedge cash flows related to the production of our product are included in cost of goods sold in the Consolidated Statements of Earnings. Unrealized gains and (losses) on commodities contracts and certain forward freight agreements are also recorded in cost of goods sold in the Consolidated Statements of Earnings. Unrealized gains or (losses) on foreign currency exchange contracts used to hedge cash flows that are not related to the production of our productsare included in the foreign currency transaction loss line in the Consolidated Statements of Earnings. Below is a table that shows the unrealized gains and (losses) on derivative instruments related to foreign currency exchange contracts, commodities contracts, and freight:

			Gain (loss)
(in millions)			Years ended May 31,
Derivative Instrument	Location		2013		2012		2011
Foreign currency derivatives	Cost of goods sold	$	(1.6)	$	(23.9)	$	6.8
Foreign currency derivatives	Foreign currency transaction gain		(13.8)		(4.0)		7.9
Commodity derivatives	Cost of goods sold		16.1		(16.0)		8.3
Freight derivatives	Cost of goods sold		0.7		(2.0)		(2.0)

The gross fair market value of all derivative instruments and their location in our Consolidated Balance Sheet are shown by those in an asset or liability position and are further categorized by foreign currency, commodity, and freight derivatives.

(in millions)	Asset Derivatives(a)			Liability Derivatives(a)
			May 31,			May 31,
Derivative Instrument	Location		2013	Location		2013
Foreign currency derivatives	Other current assets	$	10.7	Accrued liabilities	$	(38.6)
Commodity derivatives	Other current assets		4.8	Accrued liabilities		(6.1)
Commodity derivatives	Other assets		0.2	Other noncurrent liabilities		-
Freight derivatives	Other current assets		1.7	Accrued liabilities		(0.4)
Total		$	17.4		$	(45.1)
(in millions)	Asset Derivatives(a)			Liability Derivatives(a)
			May 31,			May 31,
Derivative Instrument	Location		2012	Location		2012
Foreign currency derivatives	Other current assets	$	23.8	Accrued liabilities	$	(36.7)
Commodity derivatives	Other current assets		5.8	Accrued liabilities		(15.2)
Commodity derivatives	Other assets		-	Other noncurrent liabilities		(8.3)
Freight derivatives	Other current assets		1.1	Accrued liabilities		(0.5)
Total		$	30.7		$	(60.7)

• In accordance with U.S. GAAP the above amounts are disclosed at gross fair value and the amounts recorded on the Consolidated Balance Sheet are presented on a net basis when permitted.

Credit-Risk-Related Contingent Features

Certain of our derivative instruments contain provisions that require us to post collateral. These provisions also state that if our debt were to be rated below investment grade, certain counterparties to the derivative instruments could request full collateralization on derivative instruments in net liability positions. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a liability position on May 31, 2013 and 2012 was $40.4 million and $59.7 million, respectively. We have not posted cash collateral in the normal course of business associated with these contracts. If the credit-risk-related contingent features underlying these agreements were triggered on May 31, 2013, we would be required to post an additional $39.7 million of collateral assets, which are either cash or U.S. Treasury instruments, to the counterparties.

Counterparty Credit Risk

We enter into foreign exchange and certain commodity derivatives, primarily with a diversified group of highly rated counterparties. We continually monitor our positions and the credit ratings of the counterparties involved and limit the amount of credit exposure to any one party. While we may be exposed to potential losses due to the credit risk of non-performance by these counterparties, losses are not anticipated. We closely monitor the credit risk associated with our counterparties and customers and to date have not experienced material losses.

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Financing Arrangements - Refinance of Senior Notes (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Debt Instrument [Line Items]
Stated value of issued debt	$ 1,014.6	$ 1,014.9
Extinguishment Of Debt [Line Items]
Early redemption charge	0	17.2	16.1
Notes Payable Due 2021 [Member]
Debt Instrument [Line Items]
Stated value of issued debt	450.0
Stated interest rate	3.75%
Notes Payable Due 2041 [Member]
Debt Instrument [Line Items]
Stated value of issued debt	300.0
Stated interest rate	4.875%
Debentures Due 2018 [Member]
Debt Instrument [Line Items]
Stated value of issued debt	89.0
Debentures Due 2028 [Member]
Debt Instrument [Line Items]
Stated value of issued debt	$ 147.1

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Other Financial Statement Data (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Receivables
Trade	$ 933.9	$ 706.9
Non-trade	86.5	49.6
Current receivables, gross	1,020.4	756.5
Less: Allowance for doubtful accounts	4.7	4.9
Current receivables, net	1,015.7	751.6
Inventories
Raw materials	43.0	61.8
Work in process	445.8	340.1
Finished goods	991.3	764.8
Operating materials and supplies	77.2	70.9
Inventory, net	1,557.3	1,237.6
Other current assets
Forward contract costs	137.1	152.8
Income Taxes Receivable	267.6	214.0
Prepaid expenses	98.2	132.1
Other	31.8	44.2
Total other current assets	534.7	543.1
Accrued liabilities
Non-income taxes	81.1	78.5
Payroll and employee benefits	146.6	119.6
Asset retirement obligations	83.5	87.0
Customer prepayments	243.3	323.0
Other	290.6	291.8
Total accrued liabilities, current	845.1	899.9
Other noncurrent liabilities
Asset retirement obligations	575.0	513.3
Accrued pension and postretirement benefits	140.7	142.2
Unrecognized tax benefits	45.2	159.7
Other	146.3	160.2
Total other noncurrent liabilities	907.2	975.4
Interest expense, net was comprised of the following:
Interest income	18.8	20.1	22.5
Less interest expense	0	1.4	27.6
Interest income (expense), net	$ 18.8	$ 18.7	$ (5.1)

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Investments in Non-consolidated Companies

12 Months Ended

May 31, 2013

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments Disclosure [Text Block]

9. INVESTMENTS IN NON-CONSOLIDATED COMPANIES

We have investments in various international and domestic entities and ventures. The equity method of accounting is applied to such investments when the ownership structure prevents us from exercising a controlling influence over operating and financial policies of the businesses but still allow us to have significant influence. Under this method, our equity in the net earnings or losses of the investments is reflected as equity in net earnings of non-consolidated companies on our Consolidated Statements of Earnings. The effects of material intercompany transactions with these equity method investments are eliminated, including the gross profit on sales to and purchases from our equity-method investments which is deferred until the time of sale to the final third party customer.

A summary of our equity-method investments, which were in operation as of May 31, 2013, is as follows:

Entity	Economic Interest
Gulf Sulphur Services LTD., LLLP	50.0%
River Bend Ag, LLC	50.0%
IFC S.A.	45.0%
Yunnan Three Circles Sinochem Cargill Fertilizers Co. Ltd.	35.0%
Miski Mayo Mine	35.0%
Canpotex	43.0%

The summarized financial information shown below includes all non-consolidated companies carried on the equity method.

	May 31,
(in millions)		2013		2012		2011
Net sales	$	4,475.2	$	4,938.4	$	4,061.7
Net earnings		67.5		97.9		0.5
Mosaic's share of equity in net earnings (loss)		18.3		13.3		(5.0)
Total assets		1,841.4		1,776.0		1,690.6
Total liabilities		1,149.8		1,005.0		1,022.5
Mosaic's share of equity in net assets		256.4		282.8		247.2

The difference between our share of equity in net assets as shown in the above table and the investment in non-consolidated companies as shown on the Consolidated Balance Sheets is due to an excess amount paid over the book value of the Miski Mayo Mine. The excess relates to phosphate rock reserves adjusted to fair value in relation to the Miski Mayo Mine. The excess amount is amortized over the estimated life of the phosphate rock reserve and is net of related deferred income taxes.

During fiscal 2011, we sold our 20.1% minority stake in Fosfertil, a phosphate crop nutrient producer in Brazil. Gross proceeds of $1.0 billion were received which resulted in a pre-tax gain of $685.6 million. The tax impact of this transaction was $116.2 million and was included in our provision for income taxes as of May 31, 2011.

On March 19, 2013, we entered into a Heads of Agreement with Saudi Arabian Mining Company (“Ma'aden”) and Saudi Basic Industries Corporation (“SABIC”)to form a joint venture (the “Northern Promise Joint Venture”) that would develop a phosphate rock mine and chemical complexes in the Kingdom of Saudi Arabia. The Northern Promise Joint Venture is presently expected to produce phosphate fertilizers, animal feed, food grade purified phosphoric acid and sodium tripolyphosphate. The approximately $7 billion greenfield project is expected to be financed by the joint venture with debt and the investments of the parties, and have a production capacity of approximately 3.5 million tonnes of finished product. Operations are expected to commence in late calendar 2016. We expect to have a 25% interest in the joint venture which will be accounted for in our financial statements as an equity-method investment.

In connection with our equity share, we expect that we will market approximately 25% of the production of the joint venture. Subject to final financing terms, our cash investment would be up to $1 billion, funded over a four-year period beginning in calendar 2013.The joint venture's final financing arrangements are expected to include commitments by the shareholders to fund, on a limited basis, certain construction cost overruns and provide guarantees of financing through the construction phase of the project.

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Pension Plans and Other Benefits - Est Future Defined Benefit Pension Plan Pmts (Details) (North American Pension Plans [Member], USD $) In Millions, unless otherwise specified	May 31, 2013
North American Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
2014	$ 39.7
2015	40.7
2016	42.4
2017	43.7
2018	45.1
2019-2023	$ 246.3

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Share-based Payments (Tables)

12 Months Ended

May 31, 2013

Disclosure of Compensation Related Costs, Share Based Payments [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

		Years ended May 31,
		2013	2012	2011
Weighted average assumptions used in option valuations:
	Expected volatility	47.70%	51.80%	60.46%
	Expected dividend yield	1.74%	0.28%	0.44%
	Expected term (in years)	7.0	5.0	6.0
	Risk-free interest rate	0.92%	1.46%	2.13%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

		Shares (in millions)		Weighted Average Exercise Price	Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of June 1, 2012		2.5	$	41.93	5.8	$	34.6
	Granted	0.3		57.32
	Exercised	(0.3)		26.94
Outstanding as of May 31, 2013		2.5	$	43.93	5.2	$	53.6
Exercisable as of May 31, 2013		2.0	$	40.33	4.5	$	51.0

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

		Shares (in millions)		Weighted Average Grant Date Fair Value Per Share
Restricted stock units as of June 1, 2012		0.6	$	54.47
	Granted	0.3		57.36
	Issued and canceled	(0.2)		53.20
Restricted stock units as of May 31, 2013		0.7	$	56.40

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

A summary of the assumptions used to estimate the fair value of performance units is as follows:

		Years ended May 31,
		2013	2012
Weighted average assumptions used in performance unit valuations:
	Expected volatility	38.05%	54.72%
	Expected dividend yield	1.74%	0.28%
	Expected term (in years)	3.0	3.0
	Risk-free interest rate	0.31%	0.69%

		Shares (in millions)		Weighted Average Grant Date Fair Value Per Share
Outstanding as of June 1, 2012		0.1	$	81.10
	Granted	0.1		71.19
Outstanding as of May 31, 2013		0.2	$	75.15

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Accounting for Derivative Instruments and Hedging Activities (Details 4) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Derivative Credit Risk Related Contingent Features [Abstract]
The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a liability position	$ 40.4	$ 59.7
Required collateral assets to be posted if the credit-risk contingent features of these underlying agreements were triggered.	$ 39.7

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Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 12,247.6	$ 10,830.1
Less: accumulated depreciation and depletion	3,760.8	3,284.2
Property, plant and equipment, net	8,486.8	7,545.9
Depreciation, depletion and amortization expense and capitalized
Depreciation, depletion and amortization expense	604.8	508.1	447.4
Capitalized interest on major construction projects	53.8	55.7	57.1
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	188.7	187.7
Mining Properties and Mineral Rights [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	2,886.7	2,791.0
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	1,959.3	1,456.0
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	5,793.7	4,872.6
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 1,419.2	$ 1,522.8

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Cash Flow Information (Tables)

12 Months Ended

May 31, 2013

Supplemental Cash Flow Elements [Abstract]

Schedule Of Cash Flow Supplemental Disclosures Table [Text Block]

				Years Ended May 31,
(in millions)				2013		2012		2011
Cash paid during the period for:
	Interest		$	52.0	$	76.7	$	100.2
	Less amount capitalized			52.0		55.7		57.1
		Cash interest, net	$	-	$	21.0	$	43.1
	Income taxes		$	299.9	$	516.4	$	535.2

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Pension Plans and Other Benefits

12 Months Ended

May 31, 2013

Compensation And Retirement Disclosure [Abstract]

Pension And Other Postretirement Benefits Disclosure [Text Block]

18. PENSION PLANS AND OTHER BENEFITS

We sponsor pension and postretirement benefits through a variety of plans including defined benefit plans, defined contribution plans, and postretirement benefit plans in North America and certain of our international locations.In addition, we are a participating employer in a Cargill defined benefit pension plan. We reserve the right to amend, modify, or terminate the Mosaic sponsored plans at any time, subject to provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”), prior agreements and our collective bargaining agreements.

In accordance with the merger and contribution agreement related to the Combination, pension and other postretirement benefit liabilities for certain of the former CCN employees were not transferred to us. Prior to the Combination, Cargill was the sponsor of the benefit plans for CCN employees and therefore, no assets or liabilities were transferred to us. These former CCN employees remain eligible for pension and postretirement benefits under Cargill's plans. Cargill incurs the associated costs and then charges them to us. The amount that Cargill may charge to us for such pension costs may not exceed $2.0 million per year or $19.2 million in the aggregate. As of May 31, 2013, the aggregate amount remaining under this agreement that may be charged to us is $4.9 million. This cap does not apply to the costs associated with certain active union participants who formerly earned service under Cargill's pension plan. This agreement remains in place subsequent to the Cargill Transaction described in Note 2of our Notes to Consolidated Financial Statements.

Costs charged to us for the former CCN employees' pension expense were $3.3 million for fiscal 2013 and $3.6 million and $2.9 million for fiscal 2012 and 2011, respectively.

Defined Benefit Plans

We sponsor two defined benefit pension plans in the U.S. and four plans in Canada. We assumed these plans from IMC on the date of the Combination. Benefits are based on different combinations of years of service and compensation levels, depending on the plan. The U.S. salaried and non-union hourly plan provides benefits to employees who were IMC employees prior to January 1998. In addition, the plan, as amended, accrues no further benefits for plan participants, effective March 2003. The U.S. union pension plan provides benefits to union employees. Certain U.S. union employees were given the option and elected to participate in a defined contribution retirement plan in January 2004, in which case their benefits were frozen under the U.S. union pension plan. Other represented employees with certain unions hired on or after June 2003 are not eligible to participate in the U.S. union pension plan. The Canadian pension plans consist of two plans for salaried and non-union hourly employees, which are closed to new members, and two plans for union employees.

Generally, contributions to the U.S. plans are made to meet minimum funding requirements of ERISA, while contributions to Canadian plans are made in accordance with Pension Benefits Acts instituted by the provinces of Saskatchewan and Ontario. Certain employees in the U.S. and Canada, whose pension benefits exceed Internal Revenue Code and Canada Revenue Agency limitations, respectively, are covered by supplementary non-qualified, unfunded pension plans.

Postretirement Medical Benefit Plans

We provide certain health care benefit plans for certain retired employees (“Retiree Health Plans”) which may be either contributory or non-contributory and contain certain other cost-sharing features such as deductibles and coinsurance. The Retiree Health Plans are unfunded.

The U.S. retiree medical program for certain salaried and non-union retirees age 65 and over was terminated effective January 1, 2004. The retiree medical program for salaried and non-union hourly retirees under age 65 will end at age 65. The retiree medical program for certain active salaried and non-union hourly employees was terminated effective April 1, 2003. Coverage changes and termination of certain post-65 retiree medical benefits also were effective April 1, 2003. We also provide retiree medical benefits to union hourly employees. Pursuant to a collective bargaining agreement, certain represented employees hired after June 2003 are not eligible to participate in the retiree medical program. Retiree medical benefits were eliminated for certain active union employees.

Canadian postretirement medical plans are available to retired salaried employees. Under our Canadian postretirement medical plans, all Canadian active salaried employees are eligible for coverage upon retirement. There are no retiree medical benefits available for Canadian union hourly employees.

Our U.S. retiree medical program provides a benefit to our U.S. retirees that is at least actuarially equivalent to the benefit provided by the Medicare Prescription Drug, Improvement and Modernization Act of 2003 (Medicare Part D). Because our plan is more generous than Medicare Part D, it is considered at least actuarially equivalent to Medicare Part D and the U.S. government provides a subsidy to the Company.

Accounting for Pension and Postretirement Plans

The year-end status of the North American plans was as follows:

				Pension Plans				Postretirement Benefit Plans
(in millions)				2013		2012		2013		2012
Change in projected benefit obligation:
	Benefit obligation at beginning of year		$	743.3	$	694.3	$	59.9	$	60.1
	Service cost			6.5		5.6		0.6		0.3
	Interest cost			32.6		34.5		2.3		2.6
	Plan amendments			15.3		-		-		-
	Actuarial loss			26.9		59.3		0.6		4.0
	Currency fluctuations			(0.4)		(15.5)		-		(0.9)
	Employee contribution			-		-		0.1		0.1
	Benefits paid			(35.6)		(34.9)		(5.6)		(6.3)
Projected benefit obligation at end of year			$	788.6	$	743.3	$	57.9	$	59.9
Change in plan assets:
	Fair value at beginning of year		$	654.4	$	630.0	$	-	$	-
	Currency fluctuations			(0.3)		(12.9)		-		-
	Actual return			53.9		45.4		-		-
	Company contribution			35.2		26.8		5.5		6.2
	Employee contribution			-		-		0.1		0.1
	Benefits paid			(35.6)		(34.9)		(5.6)		(6.3)
Fair value at end of year			$	707.6	$	654.4	$	-	$	-
Funded status of the plans as of May 31			$	(81.0)	$	(88.9)	$	(57.9)	$	(59.9)
Amounts recognized in the consolidated balance sheets:
	Noncurrent assets		$	6.4	$	-	$	-	$	-
	Current liabilities			(0.6)		(0.6)		(5.9)		(6.3)
	Noncurrent liabilities			(86.8)		(88.3)		(52.0)		(53.6)
	Amounts recognized in accumulated other
		comprehensive (income) loss
		Prior service costs (credits)	$	27.1	$	13.2	$	(3.2)	$	(4.9)
		Actuarial (gain)/loss		125.4		131.3		(7.0)		(8.9)

The accumulated benefit obligation for the defined benefit pension plans was $782.5 million and $736.2 million as of May 31, 2013 and 2012, respectively.

The components of net annual periodic benefit costs and other amounts recognized in other comprehensive income include the following components:

(in millions)			Pension Plans						Postretirement Benefit Plans
Net Periodic Benefit Cost			2013		2012		2011		2013		2012		2011
Service cost		$	6.5	$	5.6	$	5.0	$	0.6	$	0.3	$	0.4
Interest cost			32.6		34.5		36.2		2.3		2.6		3.1
Expected return on plan assets			(37.3)		(35.8)		(38.0)		-		-		-
Amortization of:
	Prior service cost/(credit)		1.3		1.3		0.9		(1.7)		(1.7)		(2.3)
	Actuarial (gain)/loss		16.1		13.4		7.4		(1.3)		(1.8)		(0.7)
Net periodic benefit (income) cost		$	19.2	$	19.0	$	11.5	$	(0.1)	$	(0.6)	$	0.5
Other Changes in Plan Assets and Benefit
Obligations Recognized in Other
Comprehensive Income
Prior service cost (credit) recognized
	in other comprehensive income	$	14.1	$	(1.3)	$	4.9	$	1.7	$	1.7	$	2.3
Net actuarial loss (gain) recognized
	in other comprehensive income		(5.9)		36.3		(26.7)		1.9		5.8		(38.0)
Total recognized in other
	comprehensive income	$	8.2	$	35.0	$	(21.8)	$	3.6	$	7.5	$	(35.7)
Total recognized in net periodic benefit (income)
	cost and other comprehensive income	$	27.4	$	54.0	$	(10.3)	$	3.5	$	6.9	$	(35.2)

The estimated net actuarial gain (loss) and prior service cost for the pension plans and postretirement plans that will be amortized from accumulated other comprehensive income into net periodic benefit cost in fiscal 2014 is $7.0 million and $(2.6) million, respectively.

The following estimated benefit payments, which reflect estimated future serviceare expected to be paid by the related plans in the fiscal years ending May 31:

		Pension Plans		Other Postretirement		Medicare Part D
(in millions)		Benefit Payments		Plans Benefit Payments		Adjustments
2014	$	39.7	$	5.9	$	0.5
2015		40.7		5.8		0.5
2016		42.4		5.6		0.5
2017		43.7		5.4		0.5
2018		45.1		4.9		0.4
2019-2023		246.3		17.4		1.6

In fiscal 2014, we need to contribute cash of at least $65.8 million to the pension plans to meet minimum funding requirements. Also in fiscal 2014, we anticipate contributing cash of $5.9 million to the postretirement medical benefit plans to fund anticipated benefit payments.

Plan Assets and Investment Strategies

The Company's overall investment strategy is to obtain sufficient return and provide adequate liquidity to meet the benefit obligations of our pension plans. Investments are made in public securities to ensure adequate liquidity to support benefit payments. Domestic and international stocks and bonds provide diversification to the portfolio. Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:

	2013	Plan Assets as of May 31,	2012	Plan Assets as of May 31,
US Pension Plan Assets	Target	2013	Target	2012
Asset Category
U.S. equity securities	12%	13%	12%	11%
Non-U.S. equity securities	7%	7%	7%	6%
Real estate	3%	4%	3%	4%
Fixed income	75%	74%	75%	77%
Private equity	3%	1%	3%	2%
Other	0%	1%	0%	0%
Total	100%	100%	100%	100%
	2013	Plan Assets as of May 31,	2012	Plan Assets as of May 31,
Canadian Pension Plan Assets	Target	2013	Target	2012
Asset Category
Canadian equity securities	22%	20%	22%	21%
U.S. equity securities	23%	21%	24%	22%
Non-U.S. equity securities	15%	14%	15%	14%
Fixed income	40%	37%	30%	38%
Private equity	0%	2%	9%	3%
Other	0%	6%	0%	2%
Total	100%	100%	100%	100%

For the U.S. plans, we utilize an asset allocation policy that seeks to maintain a fully-funded plan status under the Pension Protection Act (PPA) of 2006. As such, the primary investment objective beyond accumulating sufficient assets to meet future benefit obligation is to monitor and manage the liabilities of the plan to better insulate the portfolio from changes in interest rates that are impacting the liabilities. This requires an interest rate management strategy to reduce the sensitivity in the plan's funded status and having a portion of the Plan's assets invested in return-seeking strategies. Currently, our policy includes a 75% allocation to fixed income and 25% to return-seeking strategies. The U.S. pension plans' benchmark of the return-seeking strategies is currently comprised of the following indices and their respective weightings: 23% Russell 1000, 19% Russell 1000 Defensive, 8% Russell 2500, 24% MSCI EAFE Net, 4% MSCI EM Net, 16% NFI-ODCE-EQ and 6% Private Equity. The benchmark for the fixed income strategies are comprised of 19% Barclays Long Gov/Credit and 81% Barclays-Russell LDI benchmarks of various durations.

For the Canadian pension plan the investment objectives for the pension plans' assets are as follows: (i) achieve a nominal annualized rate of return equal to or greater than the actuarially assumed investment return over ten to twenty-year periods; (ii) achieve an annualized rate of return of the Consumer Price Index plus 5% over ten to twenty-year periods; (iii) realize annual, three and five-year annualized rates of return consistent with or in excess of specific respective market benchmarks at the individual asset class level; and (iv) achieve an overall return on the pension plans' assets consistent with or in excess of the total fund benchmark, which is a hybrid benchmark customized to reflect the trusts' asset allocation and performance objectives. The Canadian pension plans' benchmark is currently comprised of the following indices and their respective weightings: 21% S&P/TSX 300, 22% Russell 1000, 14% MSCI EAFE ND, 39% DEX Bond Universe, and 4% Private Equity.

In 2011, the Company completed an asset/liability study for the Canadian pension plans in an effort to select an appropriate asset allocation that will assess the potential impacts on funding. These studies resulted in the Company selecting an asset allocation policy that seeks to maintain an appropriate allocation to return seeking assets and an interest rate management strategy. This new policy is reflected in our 2013 target asset allocations above and in our assumed long term rate of return for our Canadian plans, and is nearing full implementation.

A significant amount of the assets are invested in funds that are managed by a group of professional investment managers. These funds are mainly commingled funds. Performance is reviewed by management monthly by comparing the funds' return to benchmark with an in depth quarterly review presented to the Pension Investment Committee. We do not have any significant concentrations of credit risk or industry sectors within the plan assets. Assets may be indirectly invested in Mosaic stock, but any risk related to this investment would be immaterial due to the insignificant percentage of the total pension assets that would be invested in Mosaic stock.

Fair Value Measurements of Plan Assets

The following tables provide fair value measurement, by asset class of the Company's defined benefit plan assets for both the U.S. and Canadian plans (see Note 17 for a description of the fair value hierarchy methodology):

(in millions)			May 31, 2013
U.S. Pension Plan Assets			Total		Level 1			Level 2		Level 3
Asset Category
Cash		$	1.5	$	1.5		$	-	$	-
Equity securities:
	U.S.		53.9		-			53.9		-
	International		31.0		-			31.0		-
	Real estate		17.0		-			-		17.0
Fixed income(a)			319.5		-			319.5		-
Private equity funds(b)			6.4		-			-		6.4
	Total assets at fair value	$	429.3	$	1.5		$	404.4	$	23.4
(in millions)			May 31, 2012
U.S. Pension Plan Assets			Total		Level 1			Level 2		Level 3
Asset Category
Equity securities:
	U.S.	$	44.6	$	-		$	44.6	$	-
	International		24.4		-			24.4		-
	Real estate		15.6		-			-		15.6
Fixed income(a)			323.0		-			323.0		-
Private equity funds(b)			8.2		-			-		8.2
	Total assets at fair value	$	415.8	$	-	$		392.0	$	23.8

(a)This class includes several funds that are invested approximately 17% in U.S. federal government debt securities, 10% inother governmental securities, 5% in foreign entity debt securities and 68% in corporate debt securities.

(b)This class includes several private equity funds that invest in U.S. and European corporations and financial institutions

(in millions)			May 31, 2013
Canadian Pension Plan Assets			Total		Level 1		Level 2		Level 3
Asset Category
Cash		$	14.1	$	14.1	$	-	$	-
Equity securities:
	Canadian		56.8		-		56.8		-
	U.S.		59.0		-		59.0		-
	Non-U.S. international		38.6		-		38.6		-
Fixed income(a)			103.9		-		103.9		-
Private equity funds(b)			5.9		-		-		5.9
	Total assets at fair value	$	278.3	$	14.1	$	258.3	$	5.9
(in millions)			May 31, 2012
Canadian Pension Plan Assets			Total		Level 1		Level 2		Level 3
Asset Category
Cash		$	5.9	$	5.9	$	-	$	-
Equity securities:
	Canadian		50.0		-		50.0		-
	U.S.		51.9		-		51.9		-
	Non-U.S. international		33.9		-		33.9		-
Fixed income(a)			90.3		-		90.3		-
Private equity funds(b)			6.6		-		-		6.6
	Total assets at fair value	$	238.6	$	5.9	$	226.1	$	6.6

(a)This class consists of a fund that invests approximately 38% in Canadian federal government debt securities, 16% in Canadian provincial government securities, 28% in Canadian corporate debt securities and 15% in foreign entity debt securities and 3% other.

(b)This class includes several private equity funds that invest in U.S. and international corporations.

Equity securities and fixed income investments for both the U.S and Canadian plans are held in common/collective funds valued at the net asset value (NAV) as determined by the fund managers, and generally have daily liquidity. NAV is based on the fair value of the underlying assets owned by the funds, less liabilities,and divided by the number of units outstanding. Private equity funds and real estate equity securities are valued at NAV as determined by the fund manager and have liquidity restrictions based on the nature of the underlying investments.

The following table provides a reconciliation of our plan assets measured at fair value using significant unobservable inputs (Level 3) for the year ended May 31, 2013:

(in millions)		U.S Pension Assets		Canadian Pension Assets
Balance as of June 1, 2011	$	22.8	$	7.2
Net realized and unrealized gains		1.6		0.7
Purchases, issuances, settlements, net		(0.6)		(1.3)
Balance as of May 31, 2012		23.8		6.6
Net realized and unrealized gains		0.4		0.7
Purchases, issuances, settlements, net		(0.8)		(1.4)
Balance as of May 31, 2013	$	23.4	$	5.9

Rates and Assumptions

The approach used to develop the discount rate for the pension and postretirement plans is commonly referred to as the yield curve approach. Under this approach, we use a hypothetical curve formed by the average yields of available corporate bonds rated AA and above and match it against the projected benefit payment stream. Each category of cash flow of the projected benefit payment stream is discounted back using the respective interest rate on the yield curve. Using the present value of projected benefit payments, a weighted-average discount rate is derived.

The approach used to develop the expected long-term rate of return on plan assets combines an analysis of historical performance, the drivers of investment performance by asset class, and current economic fundamentals. For returns, we utilized a building block approach starting with inflation expectations and added an expected real return to arrive at a long-term nominal expected return for each asset class. Long-term expected real returns are derived in the context of future expectations of the U.S. Treasury real yield curve.

Weighted average assumptions used to determine benefit obligations were as follows:

	Pension Plans			Postretirement Benefit Plans
	2013	2012	2011	2013	2012	2011
Discount rate	4.25%	4.44%	5.13%	3.77%	3.92%	4.54%
Expected return on plan assets	6.13%	6.29%	6.87%	-	-	-
Rate of compensation increase	4.00%	4.00%	4.00%	-	-	-

Weighted-average assumptions used to determine net benefit cost were as follows:

	Pension Plans			Postretirement Benefit Plans
	2013	2012	2011	2013	2012	2011
Discount rate	4.44%	5.13%	5.61%	3.92%	4.54%	5.71%
Expected return on plan assets	6.29%	6.87%	6.92%	-	-	-
Rate of compensation increase	4.00%	4.00%	4.00%	-	-	-

Assumed health care trend rates used to measure the expected cost of benefits covered by the plans were as follows:

	2013	2012	2011
Health care cost trend rate assumption for the next fiscal year	7.75%	8.00%	8.50%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	5.50%	5.50%	5.50%
Fiscal year that the rate reaches the ultimate trend rate	2019	2019	2015

Assumed health care cost trend rates have an effect on the amounts reported. For the health care plans a one-percentage-point change in the assumed health care cost trend rate would have the following effect:

		2013			2012			2011
		One	One		One	One		One		One
		Percentage	Percentage		Percentage	Percentage		Percentage		Percentage
		Point	Point		Point	Point		Point		Point
(in millions)		Increase	Decrease		Increase	Decrease		Increase		Decrease
Total service and interest cost	$	0.1	(0.1)	$	0.2	(0.1)	$	0.1	$	(0.1)
Postretirement benefit obligation		2.7	(2.3)		2.7	(2.3)		2.5		(2.5)

Defined Contribution Plans

The Mosaic Investment Plan (“Investment Plan”) permits eligible salaried and nonunion hourly employees to defer a portion of their compensation through payroll deductions and provides matching contributions. We match 100% of the first 3% of the participant's contributed pay plus 50% of the next 3% of the participant's contributed pay to the Investment Plan, subject to Internal Revenue Service limits. Participant contributions, matching contributions, and the related earnings immediately vest. The Investment Plan also provides an annual non-elective employer contribution feature for eligible salaried and non-union hourly employees based on the employee's age and eligible pay. Participants are generally vested in the non-elective employer contributions after three years of service. In addition, a discretionary feature of the plan allows the Company to make additional contributions to employees.

The Mosaic Union Savings Plan (“Savings Plan”) was established pursuant to collective bargaining agreements with certain unions. Mosaic makes contributions to the defined contribution retirement plan based on the collective bargaining agreements. The Savings Plan is the primary retirement vehicle for newly hired employees covered by certain collective bargaining agreements.

The expense attributable to the Investment Plan and Savings Plan was $34.5million, $30.0 million and $28.5 million in fiscal 2013, 2012 and 2011, respectively.

Canadian salaried and non-union hourly employees participate in an employer funded plan with employer contributions similar to the U.S. plan. The plan provides a profit sharing component which is paid each year. We also sponsor one mandatory union plan in Canada. Benefits in these plans vest after two years of consecutive service.

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Guarantees and Indemnities

12 Months Ended

May 31, 2013

Guarantees And Indemnities [Abstract]

Guarantees and Indemnities [Text Block]

17. GUARANTEES AND INDEMNITIES

We enter into various contracts that include indemnification and guarantee provisions as a routine part of our business activities. Examples of these contracts include asset purchase and sale agreements, surety bonds, financial assurances to regulatory agencies in connection with reclamation and closure obligations, commodity sale and purchase agreements, and other types of contractual agreements with vendors and other third parties. These agreements indemnify counterparties for matters such as reclamation and closure obligations, tax liabilities, environmental liabilities, litigation and other matters, as well as breaches by Mosaic of representations, warranties and covenants set forth in these agreements. In many cases, we are essentially guaranteeing our own performance, in which case the guarantees do not fall within the scope of the accounting and disclosures requirements under U.S. GAAP.

Our more significant guarantees and indemnities are as follows:

Guarantees to Brazilian Financial Parties. From time to time, we issue guarantees to financial parties in Brazil for certain amounts owed the institutions by certain customers of Mosaic. The guarantees are for all or part of the customers' obligations. In the event that the customers default on their payments to the institutions and we would be required to perform under the guarantees, we have in most instances obtained collateral from the customers. We monitor the nonperformance risk of the counterparties and have noted no material concerns regarding their ability to perform on their obligations. The guarantees generally have a one-year term, but may extend up to two years or longer depending on the crop cycle, and we expect to renew many of these guarantees on a rolling twelve-month basis. As of May 31, 2013, we have estimated the maximum potential future payment under the guarantees to be $35.0 million. The fair value of our guarantees is immaterial to the Consolidated Financial Statements as of May 31, 2013 and May 31, 2012.

Other Indemnities. Our maximum potential exposure under other indemnification arrangements can range from a specified dollar amount to an unlimited amount, depending on the nature of the transaction. Total maximum potential exposure under these indemnification arrangements is not estimable due to uncertainty as to whether claims will be made or how they will be resolved. We do not believe that we will be required to make any material payments under these indemnity provisions.

Because many of the guarantees and indemnities we issue to third parties do not limit the amount or duration of our obligations to perform under them, there exists a risk that we may have obligations in excess of the amounts described above. For those guarantees and indemnities that do not limit our liability exposure, we may not be able to estimate what our liability would be until a claim is made for payment or performance due to the contingent nature of these arrangements. See Note 2 of our Notes to Consolidated Financial Statements for additional information for indemnification provisions related to the Cargill Transaction .

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Commitments (Details) (USD $)	12 Months Ended
	May 31, 2013 t	May 31, 2012	May 31, 2011
Unrecorded Unconditional Purchase Obligation [Abstract]
2012	$ 1,872,500,000
2013	740,300,000
2014	446,800,000
2015	144,000,000
2016	133,300,000
Subsequent years	2,073,300,000
Total	5,410,200,000
A schedule of future minimum lease payments under non-cancelable operating leases follows:
2012	50,200,000
2013	35,500,000
2014	26,900,000
2015	21,500,000
2016	18,000,000
Subsequent years	39,600,000
Total	191,700,000
Rental expense and purchases made for the fiscal period were as follows:
Rental expense for the fiscal period	88,800,000	80,000,000	79,500,000
Purchases made under long-term commitments during the reporting period	2,700,000,000	3,100,000,000	2,200,000,000
Contracts Revenue	118,500,000	158,200,000	186,800,000
Surety Bonds Outstanding [Abstract]
Surety bonds outstanding for mining reclamation obligations	170,200,000
Surety bonds outstanding for other than mining reclamation obligations	13,700,000
Total amount of surety bonds outstanding	$ 183,900,000
Long Term Supply Contract [Line Items]
Amount Of Tonnes Taken	1,100,000
Amount Of Tonnes Credited	1,200,000

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Fair Value Measurements (Tables)

12 Months Ended

May 31, 2013

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities included in our Consolidated Balance Sheets that are recognized at fair value on a recurring basis, and indicates the fair value heirarchy utilized to determine such fair value

(in millions)			May 31, 2013
			Total		Level 1		Level 2		Level 3
Assets
Foreign currency derivatives		$	10.7	$	8.7	$	2.0	$	-
Commodity derivatives			5.0		-		5.0		-
Freight derivatives			1.7		-		-		1.7
	Total assets at fair value	$	17.4	$	8.7	$	7.0	$	1.7
Liabilities
Foreign currency derivatives		$	38.6	$	4.3	$	34.3	$	-
Commodity derivatives			6.1		-		6.1		-
Freight derivatives			0.4		-		-		0.4
	Total liabilities at fair value	$	45.1	$	4.3	$	40.4	$	0.4
(in millions)			May 31, 2012
			Total		Level 1		Level 2		Level 3
Assets
Foreign currency derivatives		$	23.8	$	20.1	$	3.7	$	-
Commodity derivatives			5.8		0.4		5.4		-
Freight derivatives			1.1		-		-		1.1
	Total assets at fair value	$	30.7	$	20.5	$	9.1	$	1.1
Liabilities
Foreign currency derivatives		$	36.7	$	0.3	$	36.4	$	-
Commodity derivatives			23.5		-		23.5		-
Freight derivatives			0.5		-		-		0.5
	Total liabilities at fair value	$	60.7	$	0.3	$	59.9	$	0.5

Schedule of carrying amounts and estimated fair values of our financial instruments

The carrying amounts and estimated fair values of our financial instruments are as follows:

		May 31,
		2013				2012
		Carrying		Fair		Carrying		Fair
(in millions)		Amount		Value		Amount		Value
Cash and cash equivalents	$	3,697.1	$	3,697.1	$	3,811.0	$	3,811.0
Accounts receivable		1,015.7		1,015.7		751.6		751.6
Accounts payable trade		763.1		763.1		912.4		912.4
Short-term debt		68.7		68.7		42.5		42.5
Long-term debt, including current portion		1,010.5		1,093.3		1,010.5		1,116.9

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Significant Accounting Policies (Policies)

12 Months Ended

May 31, 2013

Significant Accounting Policies Disclosure [Abstract]

Basis of Consolidation

Statement Presentation and Basis of Consolidation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Throughout the Notes to Consolidated Financial Statements, amounts in tables are in millions of dollars except for per share data and as otherwise designated. References in this report to a particular fiscal year are to the twelve months ended May 31 of that year.

The accompanying Consolidated Financial Statements include the accounts of Mosaic and its majority owned subsidiaries, as well as the accounts of certain variable interest entities (“VIEs”) for which we are the primary beneficiary as described in Note 12. Certain investments in companies where we do not have control but have the ability to exercise significant influence are accounted for by the equity method.

Accounting Estimates

Accounting Estimates

Preparation of the Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The more significant estimates made by management relate to the recoverability of non-current assets including goodwill, the useful lives and net realizable values of long-lived assets, environmental and reclamation liabilities including asset retirement obligations (“AROs”), the costs of our employee benefit obligations for pension plans and postretirement benefits, income tax related accounts including the valuation allowance against deferred income tax assets, Canadian resource tax and royalties, inventory valuation and accruals for pending legal and environmental matters. Actual results could differ from these estimates.

Revenue Recognition

Revenue Recognition

Revenue on North American sales is recognized when the product is delivered to the customer and/or when the risks and rewards of ownership are otherwise transferred to the customer and when the price is fixed or determinable. Revenue on North American export sales is recognized upon the transfer of title to the customer and when the other revenue recognition criteria have been met, which generally occurs when product enters international waters. Revenue from sales originating outside of North America is recognized upon transfer of title to the customer based on contractual terms of each arrangement and when the other revenue recognition criteria have been met. Shipping and handling costs are included as a component of cost of goods sold.

Income Taxes

Income Taxes

In preparing our Consolidated Financial Statements, we utilize the asset and liability approach in accounting for income taxes. We recognize income taxes in each of the jurisdictions in which we have a presence. For each jurisdiction, we estimate the actual amount of income taxes currently payable or receivable, as well as deferred income tax assets and liabilities attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

A valuation allowance is provided for those deferred tax assets for which it is more likely than not that the related tax benefits will not be realized. We evaluate our ability to realize the tax benefits associated with deferred tax assets by analyzing the relative impact of all the available positive and negative evidence regarding our forecasted taxable income using both historical and projected future operating results, the reversal of existing taxable temporary differences, taxable income in prior carry-back years (if permitted) and the availability of tax planning strategies. A valuation allowance will be recorded in each jurisdiction in which a deferred income tax asset is recorded when it is more likely than not that the deferred income tax asset will not be realized. Changes in deferred tax asset valuation allowances typically impact income tax expense.

We recognize excess tax benefits or shortfalls associated with share-based compensation in equity only when realized. When assessing whether excess tax benefits or shortfalls relating to share-based compensation have been realized, we follow the with-and-without approach excluding any indirect effects of the excess tax effects. Under this approach, excess tax benefits or shortfallsrelated to share-based compensation are generally not deemed to be realized until after the utilization of all other applicable tax benefits or shortfalls available to us.

Accounting for uncertain income tax positions is determined by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. This minimum threshold is that a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit to be recognized is measured as the largest amount of benefit that is greater than a fifty percent likelihood of being realized upon ultimate settlement. We recognize interest and penalties within our provision for income taxes on our Consolidated Statements of Earnings.

We have not recorded U.S. deferred income taxes on certain of our non-U.S. subsidiaries' undistributed earnings as such amounts are intended to be reinvested outside of the United States indefinitely. However, should we change our business and tax strategies in the future and decide to repatriate a portion of these earnings to one of our U.S. subsidiaries, including cash maintained by these non-U.S. subsidiaries, additional tax liabilities would be incurred. It is not practical to estimate the amount of additional U.S. tax liabilities we would incur.

Canadian Resource Taxes and Royalties

Canadian Resource Taxes and Royalties

We pay Canadian resource taxes consisting of the Potash Production Tax and resource surcharge. The Potash Production Tax is a Saskatchewan provincial tax on potash production and consists of a base payment and a profits tax. The profits tax is calculated on the potash content of each tonne sold from each Saskatchewan mine, net of certain operating expenses and a depreciation allowance. We also pay a percentage of the value of resource sales from our Saskatchewan mines. In addition to the Canadian resource taxes, royalties are payable to the mineral owners with respect to potash reserves or production of potash. These resource taxes and royalties are recorded in our cost of goods sold. Our Canadian resource tax and royalty expenses were $307.9 million, $327.1 million and $294.2 million for fiscal 2013, 2012 and 2011, respectively.

Brazil Non-Income Taxes

We have approximately $80 million of assets recorded at May 31, 2013 related to PIS and Cofins, a value added tax,tax credits and income tax credits mostly earned in 2009 through 2013 that we believe will be realized through paying income taxes, paying other federal taxes, or receiving cash refunds. Should the Brazilian government determine these claims to not be warranted upon review, this could impact our results in such period. We presently believe that our positions are supported.

Foreign Currency Translation

Foreign Currency Translation

The Company's reporting currency is the U.S. dollar; however, for operations located in Canada and Brazil, the functional currency is the local currency. Assets and liabilities of these foreign operations are translated to U.S. dollars at exchange rates in effect at the balance sheet date, while income statement accounts and cash flows are translated to U.S. dollars at the average exchange rates for the period. For these operations, translation gains and losses are recorded as a component of accumulated other comprehensive income in equity until the foreign entity is sold or liquidated. Transaction gains and losses result from transactions that are denominated in a currency other than the functional currency of the operation, primarily accounts receivable in our Canadian entities denominated in U.S. dollars, and accounts payable in Brazil denominated in U.S. dollars. These foreign currency transaction gains and losses are presented separately in the Consolidated Statement of Earnings.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and cash equivalents include short-term, highly liquid investments with original maturities of 90 days or less, and other highly liquid investments that are payable on demand such as money market accounts, certain certificates of deposit and repurchase agreements. The carrying amount of such cash equivalents approximates their fair value due to the short-term and highly liquid nature of these instruments.

Concentration of Credit Risk

Concentration of Credit Risk

In the U.S., we sell our products to manufacturers, distributors and retailers primarily in the Midwest and Southeast. Internationally, our phosphate and potash products are sold primarily through two North American export associations. A concentration of credit risk arises from our sales and accounts receivable associated with the international sales of potash product through Canpotex. We consider our concentration risk related to the Canpotex receivable to be mitigated by their credit policy which requires the underlying receivables to be substantially insured or secured by letters of credit. As of May 31, 2013 and 2012, $191.8 million and $200.7 million, respectively, of accounts receivable were due from Canpotex. In fiscal 2013, 2012 and 2011, sales to Canpotex were $1.2billion, $1.3 billion and$992.9 million, respectively.

Receivables and Allowance for Doubtful Accounts

Receivables and Allowance for Doubtful Accounts

Accounts receivable are recorded at face amount less an allowance for doubtful accounts. On a regular basis, we evaluate outstanding accounts receivable and establish the allowance for doubtful accounts based on a combination of specific customer circumstances as well as credit conditions and a history of write-offs and subsequent collections.

Included in other assets are long-term accounts receivable of $13.9million and $16.9 million as of May 31, 2013 and 2012, respectively. In accordance with our allowance for doubtful accounts policy, we have recorded allowances against these long-term accounts receivable of $11.3 million and $13.5 million, respectively.

Inventories

Inventories

Inventories of raw materials, work-in-process products, finished goods and operating materials and supplies are stated at the lower of cost or market. Costs for substantially all inventories are determined using the weighted average cost basis.

Market value of our inventory is defined as forecasted selling prices less reasonably predictable selling costs (net realizable value). Significant management judgment is involved in estimating forecasted selling prices including various demand and supply variables. Examples of demand variables include grain and oilseed prices, stock-to-use ratios and changes in inventories in the crop nutrients distribution channels. Examples of supply variables include forecasted prices of raw materials, such as phosphate rock, sulfur, ammonia, and natural gas, estimated operating rates and industry crop nutrient inventory levels. Results could differ materially if actual selling prices differ materially from forecasted selling prices. Charges for lower of cost or market are recognized in our Consolidated Statements of Earnings in the period when there is evidence of a decline of market value below cost.

To determine the cost of inventory, we allocate fixed expense to the costs of production based on the normal capacity, which refers to a range of production levels and is considered the production expected to be achieved over a number of periods or seasons under normal circumstances, taking into account the loss of capacity resulting from planned maintenance. Fixed overhead costs allocated to each unit of production should not increase due to abnormally low production. Those excess costs are recognized as a current period expense. When a production facility is completely shut down temporarily, it is considered “idle”, and all related expenses are charged to cost of goods sold.

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment are stated at cost. Costs of significant assets include capitalized interest incurred during the construction and development period. Repairs and maintenance, including planned major maintenance and plan turnaround costs, are expensed when incurred.

Depletion expenses for mining operations, including mineral reserves, are generally determined using the units-of-production method based on estimates of recoverable reserves. Depreciation is computed principally using the straight-line method over the following useful lives: machinery and equipment three to 25 years, and buildings and leasehold improvements three to 40 years.

We estimate initial useful lives based on experience and current technology. These estimates may be extended through sustaining capital programs. Factors affecting the fair value of our assets may also affect the estimated useful lives of our assets and these factors can change. Therefore, we periodically review the estimated remaining lives of our facilities and other significant assets and adjust our depreciation rates prospectively where appropriate.

Leases

Leases

Leases in which the risk of ownership is retained by the lessor are classified as operating leases. Leases which substantially transfer all of the benefits and risks inherent in ownership to the lessee are classified as capital leases. Assets acquired under capital leases are depreciated on the same basis as property, plant and equipment. Rental payments are expensed on a straight-line basis. Leasehold improvements are depreciated over the depreciable lives of the corresponding fixed assets or the related lease term, whichever is shorter.

Investments

Investments

Except as discussed in Note 12of our Notes to Consolidated Financial Statements, with respect to variable interest entities, investments in the common stock of affiliated companies in which our ownership interest is 50% or less and in which we exercise significant influence over operating and financial policies are accounted for using the equity method which includes eliminating the effects of any material intercompany transactions. The cash flow presentation of dividends received from equity method investees is determined by evaluation of the facts, circumstances and nature of the distribution.

Recoverability of Long-Lived Assets

Recoverability of Long-Lived Assets

Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. The carrying amount of a long-lived asset group is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset group. If it is determined that an impairment loss has occurred, the loss is measured as the amount by which the carrying amount of the long-lived asset group exceeds its fair value.

Goodwill

Goodwill

Goodwill is carried at cost, not amortized, and represents the excess of the purchase price and related costs over the fair value assigned to the net identifiable assets of a business acquired. We test goodwill for impairment at the reporting unit level on an annual basis or upon the occurrence of events that may indicate possible impairment. When testing goodwill for impairment, the Company may first assess qualitative factors. If an initial qualitative assessment identifies that it is more likely than not that the carrying value of a reporting unit exceeds its estimated fair value, additional quantitative testing is performed in two phases. The first step compares the fair value of the reporting unit with its carrying amount, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. However, if the carrying amount of the reporting unit exceeds its fair value, the implied fair value of the reporting unit's goodwill would be compared with the carrying amount of that goodwill. An impairment loss would be recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. The Company may also elect not to perform the qualitative assessment and proceed directly to the quantitative testing. We have established the second quarter of our fiscal year as the period for our annual test for impairment of goodwill and the test resulted in no impairment in the periods presented.

Environmental Costs

Environmental Costs

Accruals for estimated costs are recorded when environmental remediation efforts are probable and the costs can be reasonably estimated. In determining these accruals, we use the most current information available, including similar past experiences, available technology, consultant evaluations, regulations in effect, the timing of remediation and cost-sharing arrangements.

Asset Retirement Obligations

Asset Retirement Obligations

We recognize AROs in the period in which we have an existing legal obligation associated with the retirement of a tangible long-lived asset, and the amount of the liability can be reasonably estimated. The ARO is recognized at fair value when the liability is incurred. Upon initial recognition of a liability, that cost is capitalized as part of the related long-lived asset and depreciated on a straight-line basis over the remaining estimated useful life of the related asset. The liability is adjusted in subsequent periods through accretion expense which represents the increase in the present value of the liability due to the passage of time. Such depreciation and accretion expenses are included in cost of goods sold for operating facilities and other operating expense for indefinitely closed facilities.

Litigation

Litigation

We are involved from time to time in claims and legal actions incidental to our operations, both as plaintiff and defendant. We have established what we currently believe to be adequate accruals for pending legal matters. These accruals are established as part of an ongoing worldwide assessment of claims and legal actions that takes into consideration such items as advice of legal counsel, individual developments in court proceedings, changes in the law, changes in business focus, changes in the litigation environment, changes in opponent strategy and tactics, new developments as a result of ongoing discovery, and past experience in defending and settling similar claims. The litigation accruals at any time reflect updated assessments of the then-existing claims and legal actions. The final outcome or potential settlement of litigation matters could differ materially from the accruals which we have established. For significant individual cases, we accrue legal costs expected to be incurred.

Pension and Other Postretirement Benefits

Pension and Other Postretirement Benefits

Mosaic offers a number of benefit plans that provide pension and other benefits to qualified employees. These plans include defined benefit pension plans, supplemental pension plans, defined contribution plans and other postretirement benefit plans.

We accrue the funded status of our plans, which is representative of our obligations under employee benefit plans and the related costs, net of plan assets measured at fair value. The cost of pensions and other retirement benefits earned by employees is generally determined with the assistance of an actuary using the projected benefit method prorated on service and management's best estimate of expected plan investment performance, salary escalation, retirement ages of employees and expected healthcare costs.

Share-Based Compensation

Share-Based Compensation

We measure the cost of employees' services received in exchange for an award of equity instruments based on grant-date fair value of the award, and recognize the cost over the period during which the employee is required to provide service in exchange for the award. Our granted awards consist of stock options that generally vest annually in equal amounts over a three-year period and have an exercise price equal to the fair market value of our common stock on the date of grant, restricted stock units that generally cliff vest after three years and have a fair value equal to the market price of our stock at the date of grant and performance units that vest after a three-year period and are recorded at their fair value at the grant date. We recognize compensation expense for awards on a straight-line basis over the requisite service period.

Derivative and Hedging Activities

Derivative Activities

We periodically enter into derivatives to mitigate our exposure to foreign currency risks and the effects of changing commodity and freight prices. We record all derivatives on the Consolidated Balance Sheets at fair value. The fair value of these instruments is determined by using quoted market prices, third party comparables, or internal estimates. We net our derivative asset and liability positions when we have a master netting arrangement in place. Changes in the fair value of the foreign currency, commodity, and freight derivatives are immediately recognized in earnings because we do not apply hedge accounting treatment to these instruments.

Fair Value

We determine the fair market values of our derivative contracts and certain other assets based on the fair value hierarchy described below, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels within its hierarchy that may be used to measure fair value.

Level 1: Values based on unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities.

Level 2: Values based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3: Values generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

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Goodwill (Tables)

12 Months Ended

May 31, 2013

Goodwill [Abstract]

Goodwill

The changes in the carrying amount of goodwill, by reporting unit, for the years ended May 31, 2013 and 2012, are as follows:

(in millions)		Phosphates		Potash		Total
Balance as of May 31, 2011	$	534.7	$	1,295.1	$	1,829.8
Foreign currency translation and other		11.9		2.7		14.6
Balance as of May 31, 2012		546.6		1,297.8		1,844.4
Foreign currency translation		-		0.2		0.2
Balance as of May 31, 2013	$	546.6	$	1,298.0	$	1,844.6

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Commitments (Tables)

12 Months Ended

May 31, 2013

Commitments And Contingencies Disclosure [Abstract]

A schedule of future minimum long-term purchase commitments and future minimum lease payments

A schedule of future minimum long-term purchase commitments, based on May 31, 2013 market prices, and minimum lease payments under non-cancelable operating leases as of May 31, 2013 follows:

(in millions)		Purchase Commitments		Operating Leases
2014	$	1,872.5	$	50.2
2015		740.3		35.5
2016		446.8		26.9
2017		144.0		21.5
2018		133.3		18.0
Subsequent years		2,073.3		39.6
	$	5,410.2	$	191.7

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Related Party Transactions

12 Months Ended

May 31, 2013

Related Party Transactions [Abstract]

Related Party Transactions

22. RELATED PARTY TRANSACTIONS

On May 25, 2011, Cargill, our former majority stockholder, exchanged its 64% stake in our company with certain Cargill stockholders and debt holders. For further discussion of these exchanges as part of the Cargill Transaction, see Note 2 of the Notes to Consolidated Financial Statements. Until these exchanges, Cargill was considered a related party due to its ownership interest in us.

We engage in various transactions, arrangements and agreements with Cargill. While Cargill was considered a related party, a Cargill transactions subcommittee of the corporate governance and nominating committee of our board of directors, comprised solely of independent directors, was responsible for reviewing and approving these transactions, arrangements and agreements. Our related person transactions approval policy provided for the delegation of approval authority for certain transactions with Cargill, other than those of the type described in such related person transactions approval policy, to an internal committee comprised of senior managers. The internal management committee was required to report its activities to the Cargill transactions subcommittee on a periodic basis.

Cargill made equity contributions of $18.5 million to us in fiscal 2011.

In summary, the Consolidated Statements of Earnings included the following transactions with Cargill, while Cargill was considered a related party:

			Year ended May 31,
(in millions)			2011
Transactions with Cargill included in net sales		$	238.1
Transactions with Cargill included in cost of goods sold			146.8
Transactions with Cargill included in selling, general
	and administrative expenses		6.1
Interest income received from Cargill			0.2

We have also entered into transactions and agreements with certain of our non-consolidated companies. As of May 31, 2013 and 2012, the net amount due from our non-consolidated companies totaled $145.8 million and $134.8 million, respectively.

The Consolidated Statements of Earnings included the following transactions with our non-consolidated companies:

			Years ended May 31,
(in millions)			2013		2012		2011
Transactions with non-consolidated companies
	included in net sales	$	1,263.9	$	1,321.2	$	1,015.7
Transactions with non-consolidated companies
	included in cost of goods sold		632.0		557.3		511.3

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Investments in Non-Consolidated Companies - Ma'aden JV (Details 5) (USD $) In Billions, unless otherwise specified	12 Months Ended
	May 31, 2013 t
Equity Method Investments and Joint Ventures [Abstract]
Maximum cash investment to acquire 25% interest in a joint venture with Ma'aden and SABIC	$ 1.0
Investment in phosphates greenfield mine	$ 7.0
Annual production of finished product (Tonnes)	3,500,000
Percent of joint venture production Mosaic expects to market	25.00%
Economic interest in joint venture	25.00%

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Income Taxes (Details 3) (USD $)	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Long Lived Assets Held For Sale [Line Items]
Provision for income taxes	$ 341,000,000	$ 711,400,000	$ 752,800,000
Investments in Foreign Subsidiaries and Foreign Corporate Joint Ventures that are Essentially Permanent in Duration [Member]
Income Tax Contingency [Line Items]
Undistributed earnings of non-US subsidiaries for which no deferred tax liability has been established	2,700,000,000
Equity Method Investee Fosfertil [Member]
Long Lived Assets Held For Sale [Line Items]
Provision for income taxes			$ 116,200,000

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Investments in Non-Consolidated Companies - Miski Mayo Mine (Details 4) (USD $) In Billions, unless otherwise specified	12 Months Ended
	May 31, 2013
Schedule Of Equity Method Investments [Line Items]
Payment to acquire 35% economic interest in Miski Mayo mine	$ 1.0
Equity Method Investments [Member]
Schedule Of Equity Method Investments [Line Items]
Economic interest percentage in Miski Mayo mine joint venture in the Bayovar region of Peru	35.00%

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Income Taxes (Table)

12 Months Ended

May 31, 2013

Income Tax Disclosure [Abstract]

Provision For Income Taxes [Table Text Block]

The provision for income taxes for the years ended May 31 consisted of the following:

Schedule Of Effective Income Tax Rate [Table Text Block]

(in millions)		2013		2012		2011
Current:
Federal	$	138.8	$	314.5	$	134.9
State		42.5		61.0		52.0
Non-U.S.		81.5		77.0		380.1
Total current		262.8		452.5		567.0
Deferred:
Federal		(32.9)		7.4		99.2
State		(14.1)		9.0		7.0
Non-U.S.		125.2		242.5		79.6
Total deferred		78.2		258.9		185.8
Provision for income taxes	$	341.0	$	711.4	$	752.8

The components of earnings from consolidated companies before income taxes, and the effects of significant adjustments to tax computed at the federal statutory rate, were as follows:

(in millions)		2013		2012		2011
United States earnings	$	1,158.1	$	1,412.7	$	1,477.5
Non-U.S. earnings		1,056.4		1,216.2		1,793.8
Earnings from consolidated companies before income taxes	$	2,214.5	$	2,628.9	$	3,271.3
Computed tax at the U.S. federal statutory rate of 35%		35.0%		35.0%		35.0%
State and local income taxes, net of federal income tax benefit		1.6%		1.6%		1.3%
Percentage depletion in excess of basis		(7.1%)		(6.6%)		(4.5%)
Impact of non-U.S. earnings		(10.2%)		(2.9%)		(7.5%)
Change in valuation allowance		(3.6%)		0.4%		0.5%
Other items (none in excess of 5% of computed tax)		(0.3%)		(0.4%)		(1.8%)
Effective tax rate		15.4%		27.1%		23.0%

Schedule Of Deferred Tax Assets And Liabilities [Table Text Block]

(in millions)				2013		2012
Deferred tax liabilities:
	Depreciation and amortization		$	956.2	$	761.6
	Depletion			427.2		465.4
	Partnership tax bases differences			104.0		105.4
	Undistributed earnings of non-U.S. subsidiaries			215.8		215.8
	Other liabilities			227.8		91.9
	Total deferred tax liabilities		$	1,931.0	$	1,640.1
Deferred tax assets:
	Alternative minimum tax credit carryforwards		$	63.1	$	88.1
	Capital loss carryforwards			6.9		7.1
	Foreign tax credit carryforwards			528.0		529.7
	Net operating loss carryforwards			158.6		168.8
	Pension plans and other benefits			52.1		54.2
	Asset retirement obligations			237.6		220.2
	Other assets			218.2		190.3
		Subtotal		1,264.5		1,258.4
	Valuation allowance			93.6		180.2
	Net deferred tax assets			1,170.9		1,078.2
Net deferred tax liabilities			$	(760.1)	$	(561.9)

Summary Of Income Tax Uncertainties [Table Text Block]

			May 31,
(in millions)			2013		2012
Gross unrecognized tax benefits, beginning of year		$	476.9	$	263.5
Gross increases:
	Prior year tax positions		7.7		103.1
	Current year tax positions		36.6		146.9
Gross decreases:
	Prior year tax positions		(204.3)		(34.8)
Currency translation			(0.1)		(1.8)
Gross unrecognized tax benefits, end of year		$	316.8	$	476.9

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Variable Interest Entities (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
The carrying amounts and classification of assets and liabilities included in our Consolidated Balance Sheets for these consolidated entities are as follows:
Current Assets	$ 6,880.5	$ 6,581.1
Current Liabilities	1,764.9	1,917.7
Non Current Liabilities	0	0
Net sales to external customers of VIEs	9,974.1	11,107.8	9,937.8
Current maturities of long-term debt	0.9	0.5
Variable Interest Entity Primary Beneficiary [Member]
The carrying amounts and classification of assets and liabilities included in our Consolidated Balance Sheets for these consolidated entities are as follows:
Current Assets	180.7	138.6
Non Current Assets	46.9	49.4
Total Assets	227.6	188.0
Current Liabilities	5.4	39.6
Total Liabilities	5.4	39.6
Variable Interest Entity Phos Chem [Member]
The carrying amounts and classification of assets and liabilities included in our Consolidated Balance Sheets for these consolidated entities are as follows:
Net sales to external customers of VIEs	$ 1,300.0	$ 2,400.0	$ 2,300.0

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Pension Plans and Other Benefits - Fair Value Assumptions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Assumed health care trend rates used to measure the expected cost of benefits covered by the plans were as follows:
Health care cost trend rate assumption for the next fiscal year	7.75%	8.00%	8.50%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	5.50%	5.50%	5.50%
Fiscal year that the rate reaches the ultimate trend rate	2019	2019	2015
Assumed health care cost trend rates have an effect on the amounts reported. For the health care plans a one-percentage-point change in the assumed health care cost trend rate would have the following effect:
Effect of 1% increase on total service and interest cost	$ 0.1	$ 0.2	$ 0.1
Effect of 1% decrease on total service and interest cost	(0.1)	(0.1)	(0.1)
Effect of 1% increase on postretirement benefit obligation	2.7	2.7	2.5
Effect of 1% decrease on postretirement benefit obligation	$ (2.3)	$ (2.3)	$ (2.5)
North American Pension Plans [Member]
The assumptions used to determine benefit obligations are based on a measurement date of May 31, and were as follows:
Discount rate	4.25%	4.44%	5.13%
Expected return on plan assets	6.13%	6.29%	6.87%
Rate of compensation increase	4.00%	4.00%	4.00%
The assumptions used to determine net benefit cost are based on a measurement date of May 31, and were as follows:
Discount rate	4.44%	5.13%	5.61%
Expected return on plan assets	6.29%	6.87%	6.92%
Rate of compensation increase	4.00%	4.00%	4.00%
North American Postretirement Benefit Plans [Member]
The assumptions used to determine benefit obligations are based on a measurement date of May 31, and were as follows:
Discount rate	3.77%	3.92%	4.54%
Expected return on plan assets	0.00%	0.00%	0.00%
Rate of compensation increase	0.00%	0.00%	0.00%
The assumptions used to determine net benefit cost are based on a measurement date of May 31, and were as follows:
Discount rate	3.92%	4.54%	5.71%
Expected return on plan assets	0.00%	0.00%	0.00%
Rate of compensation increase	0.00%	0.00%	0.00%

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Pension Plans and Other Benefits - Defined Contribution Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Defined Contribution Pension And Other Postretirement Plans Disclosure Abstract
Maximum rate of first tier of deferred compensation elected by employees under the Company's "Investment Plan"	3.00%
Mosaic's matching rate of first tier of employee's compensation deferrals under the "Investment Plan"	100.00%
Maximum rate of second tier of deferred compensation elected by employees under the Company's "Investment Plan"	3.00%
Mosaic's matching rate of second tier of employee's compensation deferrals under the "Investment Plan"	50.00%
Expense attributable to the Company's Investment Plan and Savings Plan	$ 34.5	$ 30.0	$ 28.5

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Share-based Payments (Details 2) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Information pertaining to share-based compensation awards is as follows:
Share-based compensation expense, net of forfeitures, in the fiscal year	$ 32.2	$ 25.2	$ 21.9
The tax benefit related to share-based compensation expense in the fiscal year	11.4	8.7	7.8
Cash received from options exercised under all share-based payment arrangements during the fiscal year	6.0	3.0	20.3
Tax benefit for tax deductions from options during the fiscal year	6.4	3.7	20.9
A summary of our stock option activity during the fiscal year is as follows:
Number of option shares outstanding at beginning of period	2.5
Granted	0.3
Exercised	(0.3)
Number of option shares outstanding at end of period	2.5	2.5
Number of shares issuable under options exercisable at end of period	2.0
Weighted average exercise price- options outstanding at beginning of period	$ 41.93
Granted	$ 57.32
Exercised	$ 26.94
Weighted Average Exercise Price- options outstanding at end of period	$ 43.93	$ 41.93
Weighted Average Exercise Price- options exercisable at end of period	$ 40.33
Weighted Average Remaining Contractual Term (Years) - options outstanding at beginning of period	5 years 2 months 12 days	5 years 9 months 19 days
Weighted Average Remaining Contractual Term (Years) - options outstanding at end of period	5 years 2 months 12 days	5 years 9 months 19 days
Weighted Average Remaining Contractual Term (Years) - options exercisable as of the end of the fiscal year	4 years 6 months 0 days
Aggregate Intrinsic Value - options outstanding at beginning of period	34.6
Aggregate Intrinsic Value - options outstanding at end of period	53.6	34.6
Aggregate Intrinsic Value - options exercisable as of the end of the fiscal year	51.0
The weighted-average grant date fair value of options granted during the fiscal year	$ 22.71	$ 30.96	$ 26.38
The total intrinsic value of options exercised during the fiscal year	6.8	5.5	54.1
The total fair value of options vested during the fiscal year	$ 9.5	$ 10.2
Stock Options [Member]
Assumptions used to calculate the fair value of stock options in each period are noted in the following table. A summary of the assumptions used to estimate the fair value of stock option awards is as follows:
Expected volatility (percent)	47.70%	51.80%	60.46%
Expected dividend yield (percent)	1.74%	0.28%	0.44%
Expected term (in years)	7 years	5 years	6 years
Risk-free interest rate (percent)	0.92%	1.46%	2.13%

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Fair Value Measurements

12 Months Ended

May 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

16. FAIR VALUE MEASUREMENTS

We determine the fair market values of our derivative contracts and certain other assets based on the fair value hierarchy described below, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels within its hierarchy that may be used to measure fair value.

Level 1: Values based on unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities.

Level 2: Values based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3: Values generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

Assets and Liabilities Measured at Fair Value

The following table presents assets and liabilities included in our Consolidated Balance Sheets that are recognized at fair value on a recurring basis, and indicates the fair value hierarchy utilized to determine such fair value. The assets and liabilities are classified in their entirety based on the lowest level of input that is a significant component of the fair value measurement. The lowest level of input is considered Level 3. Our assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the classification of fair value assets and liabilities within the fair value hierarchy levels.

(in millions)			May 31, 2013
			Total		Level 1		Level 2		Level 3
Assets
Foreign currency derivatives		$	10.7	$	8.7	$	2.0	$	-
Commodity derivatives			5.0		-		5.0		-
Freight derivatives			1.7		-		-		1.7
	Total assets at fair value	$	17.4	$	8.7	$	7.0	$	1.7
Liabilities
Foreign currency derivatives		$	38.6	$	4.3	$	34.3	$	-
Commodity derivatives			6.1		-		6.1		-
Freight derivatives			0.4		-		-		0.4
	Total liabilities at fair value	$	45.1	$	4.3	$	40.4	$	0.4
(in millions)			May 31, 2012
			Total		Level 1		Level 2		Level 3
Assets
Foreign currency derivatives		$	23.8	$	20.1	$	3.7	$	-
Commodity derivatives			5.8		0.4		5.4		-
Freight derivatives			1.1		-		-		1.1
	Total assets at fair value	$	30.7	$	20.5	$	9.1	$	1.1
Liabilities
Foreign currency derivatives		$	36.7	$	0.3	$	36.4	$	-
Commodity derivatives			23.5		-		23.5		-
Freight derivatives			0.5		-		-		0.5
	Total liabilities at fair value	$	60.7	$	0.3	$	59.9	$	0.5

Following is a summary of the valuation techniques for assets and liabilities recorded in our Consolidated Balance Sheets at fair value on a recurring basis:

Foreign Currency Derivatives—The foreign currency derivative instruments that we currently use are forward contracts, zero-cost collars, and futures, which typically expire within one year. Valuations are based on exchange-quoted prices, which are classified as Level 1. Some of the valuations are adjusted by a forward yield curve or interest rates. In such cases, these derivative contracts are classified within Level 2. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold or foreign currency transaction (gain) loss.

Commodity Derivatives—The commodity contracts primarily relate to natural gas. The commodity derivative instruments that we currently use are forward purchase contracts, swaps, and three-way collars. The natural gas contracts settle using NYMEX futures or AECO price indexes, which represent fair value at any given time. The contracts' maturities are for future months and settlements are scheduled to coincide with anticipated gas purchases during those future periods. Quoted market prices from NYMEX and AECO are used to determine the fair value of these instruments. These market prices are adjusted by a forward yield curve and are classified within Level 2. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold.

Freight Derivatives—The freight derivatives that we currently use are forward freight agreements. We estimate fair market values based on exchange-quoted prices, adjusted for differences in local markets. These differences are generally valued using inputs from broker quotations. Therefore, these contracts are classified in Level 2. Certain ocean freight derivatives are traded in less active markets with less availability of pricing information and require internally-developed inputs that might not be observable in or corroborated by the market. These contracts are classified within Level 3. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold.

Financial Instruments

The carrying amounts and estimated fair values of our financial instruments are as follows:

		May 31,
		2013				2012
		Carrying		Fair		Carrying		Fair
(in millions)		Amount		Value		Amount		Value
Cash and cash equivalents	$	3,697.1	$	3,697.1	$	3,811.0	$	3,811.0
Accounts receivable		1,015.7		1,015.7		751.6		751.6
Accounts payable trade		763.1		763.1		912.4		912.4
Short-term debt		68.7		68.7		42.5		42.5
Long-term debt, including current portion		1,010.5		1,093.3		1,010.5		1,116.9

For cash and cash equivalents, accounts receivable, accounts payable and short-term debt, the carrying amount approximates fair value because of the short-term maturity of those instruments. The fair value of long-term debtis estimated using quoted market prices for the publicly registered notes and debentures, classified as Level 1 and Level 2, respectively, within the fair value hierarchy, depending on the market liquidity of the debt.

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Consolidated Balance Sheets (Parentheticals) (USD $)	May 31, 2013	May 31, 2012
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	15,000,000	15,000,000
Preferred stock, issued	0	0
Common Class A [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	254,300,000	254,300,000
Common stock, issued	150,059,772	150,059,772
Common stock, outstanding	128,759,772	128,759,772
Common Class B [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	87,008,602	87,008,602
Common stock, issued	0	0
Common stock, outstanding	0	0
No Class Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	1,000,000,000	1,000,000,000
Common stock, issued	309,095,779	308,749,067
Common stock, outstanding	297,057,317	296,710,605

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Consolidated Statements of Shareholders Equity (USD $) In Millions, except Share data	Total	No Class Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Non- Controlling Interests [Member]
Beginning balance at May. 31, 2010	$ 8,748.4	$ 4.5	$ 2,523.0	$ 5,905.3	$ 289.4	$ 26.2
Common stock shares outstanding, beginning balance at May. 31, 2010		445,400,000
Total comprehensive income (loss)	2,936.9			2,514.6	420.8	1.5
Stock option exercises	20.3		20.3
Stock option exercises, shares		1,200,000
Amortization of stock based compensation	21.1		21.1
Contributions from Cargill, Inc.	18.5		18.5
Dividends	(89.3)			(89.3)
Dividends for non-controlling interests	(4.8)					(4.8)
Acquisition of non-controlling interest	(2.6)					(2.6)
Tax benefits (shortfall) related to share based compensation	13.4		13.4
Ending balance at May. 31, 2011	11,661.9	4.5	2,596.3	8,330.6	710.2	20.3
Common stock shares outstanding, ending balance at May. 31, 2011		446,600,000
Total comprehensive income (loss)	1,594.7			1,930.2	(332.2)	(3.3)
Stock option exercises /Restricted stocks units vested (shares)	200,000
Stock option exercises /Restricted stocks units vested	3.0		3.0
Amortization of stock based compensation	23.4		23.4
Repurchase of Class A common stock	(1,162.5)	(0.2)	(1,162.3)
Repurchase of Class A common stock (shares)		21,300,000
Dividends	(119.5)			(119.5)
Dividends for non-controlling interests	(0.7)					(0.7)
Tax benefits (shortfall) related to share based compensation	(0.9)		(0.9)
Ending balance at May. 31, 2012	11,999.4	4.3	1,459.5	10,141.3	378.0	16.3
Common stock shares outstanding, ending balance at May. 31, 2012		425,500,000
Total comprehensive income (loss)	1,839.5			1,888.7	(51.6)	2.4
Stock option exercises	6.0		6.0
Stock option exercises, shares	300,000
Amortization of stock based compensation	28.2		28.2
Dividends	(426.6)			(426.6)
Dividends for non-controlling interests	(1.2)					(1.2)
Tax benefits (shortfall) related to share based compensation	(2.4)		(2.4)
Ending balance at May. 31, 2013	$ 13,442.9	$ 4.3	$ 1,491.3	$ 11,603.4	$ 326.4	$ 17.5
Common stock shares outstanding, ending balance at May. 31, 2013		425,800,000

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Cargill Transaction

12 Months Ended

May 31, 2013

Cargill Transaction [Abstract]

Cargill Transaction [Text Block]

2. CARGILL TRANSACTION

On May 25, 2011, we consummated the first in a series of transactions intended to result in the split-off and orderly distribution of Cargill's approximately 64% equity interest in us through a series of public offerings (the “Cargill Transaction”). These transactions included the following:

• A Merger (the “Merger”) between a subsidiary of GNS II (U.S.) Corp. (“GNS”) and MOS Holdings Inc. (“MOS Holdings”) that had the effect of recapitalizing our prior Common Stock into three classes: Common Stock, Class A Common Stock and Class B Common Stock. The Common Stock is substantially identical to our prior Common Stock, and all three new classes had the same economic rights as our prior Common Stock. Holders of the Common Stock and the Class A Common Stock have one vote per share on all matters on which they are entitled to vote, whereas holders of the Class B Common Stock had ten votes per share solely for the election of directors and one vote per share on all other matters on which they were entitled to vote. The Class A Common Stock is and the Class B Common Stock was subject to transfer restrictions, have or had conversion rights and class voting rights, and are or were not publicly traded. Following the Merger, our Common Stock continues to trade under the ticker symbol MOS.
• Priorto the Merger, GNS was a wholly-owned subsidiary of the company then known as The Mosaic Company. The Merger made GNS the parent company of MOS Holdings. In connection with the Merger, the company formerly known as The Mosaic Company was renamed MOS Holdings Inc. and GNS was renamed The Mosaic Company.
• In the Merger,a portion of our Common Stock held by Cargill was converted, on a one-for-one basis, into the right to receive Class A Common Stock and Class B Common Stock. Each other outstanding share of our prior Common Stock (including a portion of the shares of our prior Common Stock held by Cargill) was converted into the right to receive a share of our Common Stock.
• Cargillconducted a split-off (the “Split-off”) in which it exchanged 178.3 million of our shares that it received in the Merger for shares of Cargill stock held by certain Cargill stockholders (the “Exchanging Cargill Stockholders”). Immediately after the Split-off, the Exchanging Cargill Stockholders held approximately 40% of our total outstanding shares that represented approximately 82% of the total voting power with respect to the election of our directors.
• Cargillalso exchanged the remaining 107.5 million of our shares that it received in the Merger with certain holders of Cargill debt (the “Exchanging Cargill Debt Holders”) for such Cargill debt (the “Debt Exchange”).
• Certainof the Exchanging Cargill Stockholders (the “MAC Trusts”) and the Exchanging Cargill Debt Holders (collectively, the “Selling Stockholders”) then sold an aggregate of 115.0 million shares of our Common Stock that they received in the Split-off and the Debt Exchange in an underwritten secondary public offering (the “Formation Offering”).

In fiscal 2011, Cargill reimbursed us for $18.5 million in the aggregate of fees and expenses we incurred in connection with the matters described above and negotiation of the Cargill Transaction; such reimbursement was recorded as a capital contribution in stockholders' equity.

Pursuant to a ruling from the U.S. Internal Revenue Service, the Merger, Split-off and Debt Exchange were tax-free to Cargill, Mosaic and their respective stockholders.

In fiscal 2012, we completed several additional transactions in furtherance of the planned orderly distribution of our stock that the Exchanging Cargill Stockholders acquired from Cargill in the Split-off:

• On September 29, 2011, we converted 20.7 million shares of our Class A Common Stock, Series A-4, to Common Stock in connection with their sale in an underwritten public secondary offering bythe MAC Trusts. In accordance with our Restated Certificate of Incorporation, each such converted share of Class A Common Stock, Series A-4, was subsequently retired and cancelled and may not be reissued, and the number of authorized shares of Class A Common Stock was reduced by a corresponding amount.
• On October 6, 2011, our stockholders approved the conversion of each of our approximately 113.0 million outstanding shares of Class B Common Stock on a one-for-one basis into shares of the corresponding series of Class A Common Stock. In accordance with our Restated Certificate of Incorporation, each such converted share of Class B Common Stock was subsequently retired and cancelled and may not be reissued, and the number of authorized shares of Class B Common Stock was reduced by a corresponding amount.
• On November 17, 2011, we purchased an aggregate 21.3million shares of our Class A Common Stock, Series A-4, from the MAC Trusts. The purchase price was $54.58 per share, the closing price for our Common Stock on November 16, 2011, resulting in a total purchase price of approximately $1.2 billion. This repurchase completed the disposition of the 157.0million shares designated to be sold during the 15-month period following the Split-off by theSelling Stockholders.

All other shares of our stock (approximately 128.8 million shares in the aggregate) received by the Exchanging Cargill Stockholders and not sold in theFormation Offering are generally subject to transfer restrictions and are to be released in three equal annual installments beginning on November 26, 2013, unless they are sold prior to the release date. In each of the calendar years 2013 through 2015, we would, at the request of the MAC Trusts or at our own election, register these shares for sale in an underwritten public secondary offering that could occur during the period May 26 through October 26. The maximum number of shares that may be included in each such offering is to be determined by the lead underwriter chosen by us for such offering.

Following May 23, 2016, the MAC Trusts will have two rights to request that we file a registration statement under the Securities Act of 1933, pursuant to which the MAC Trusts could sell any remaining shares they received in the Split-off.

Our agreements with Cargill and the Exchanging Cargill Stockholders also contain additional provisions relating to private and market sales under specified conditions.

We agreed that, among other things, and subject to certain exceptions:

• We would not engage in certain prohibited acts (“Prohibited Acts”) until May 26, 2013.
• We will indemnify Cargill for certain taxes and tax-related losses imposed on Cargill if we engaged in a Prohibited Act or in the event we are in breach of representations or warranties made in support of the tax-free nature of the Merger, Split-off and Debt Exchange, if our Prohibited Act or breach causes the Merger, Split-off and/or Debt Exchange to fail to qualify as tax-free transactions.

  Generally speaking, Prohibited Acts included:

• Entering into any agreements, understandings, arrangements or substantial negotiations pursuant to which any person would acquire, increase or have the right to acquire or increase such person's ownership interest in us, provided that equity issuances, redemptions or repurchases from the MAC Trusts and approvals of transfers within an agreed-upon “basket” were not Prohibited Acts.
• Approving or recommending a third-party tender offer or exchange offer for our stock or causing or permitting any merger, reorganization, combination or consolidation of Mosaic or MOS Holdings.
• Causing our “separate affiliated group” (as defined in the Internal Revenue Code) to fail to be engaged in the fertilizer business.
• Reclassifying, exchanging or converting any shares of our stock into another class or series, or changing the voting rights of any shares of our stock (other than the conversion of Class B Common Stock to Class A Common Stock) or declaring or paying a stock dividend in respect of our common stock.
• Facilitating the acquisition of Mosaic's stock by any person or coordinating group (as defined in IRS regulations) (other than Cargill and its subsidiaries), if such acquisition would result in any person or coordinating group beneficially owning 10% or more of our outstanding Common Stock.
• Facilitating participation in management or operation of the Company (including by becoming a director) by a person or coordinating group (as defined in IRS regulations) (other than Cargill and its subsidiaries) who beneficially owns 5% or more of our outstanding Common Stock.

The agreements relating to the Cargill Transaction continue to restrict our ability to engage in share buybacks (other than self-tender offers to all of our stockholders complying with Rule 13e-4 under the Securities Exchange Act of 1934). The restriction on share buybacks applies until November 26, 2013.

After May 26, 2013, we engaged in discussions with Cargill and the MAC Trusts regarding the disposition of the Class A Shares, including a potential share repurchase transaction. In connection with these discussions, we, with the MAC Trusts' support, requested that Cargill amend the Split-off agreement to allow for a negotiated repurchase of Class A Shares prior to November 26, 2013. After considering the request, Cargill declined to amend the agreement to allow for earlier share repurchases. As a result, we are not permitted to engage in open market or negotiated share repurchases until after November 26, 2013. The only practical means for holders of the Class A Shares to dispose of their shares prior to that date would be through an underwritten public secondary offering, which couldonly be initiated by the MAC Trusts prior to June 26, 2013 or by us thereafter. After considering their alternatives, the MAC Trusts notified us that they would not exercise their first right to request an underwritten public secondary offering, that would occur during the period May 26, 2013 through October 26, 2013. We look forward to initiating share repurchases after November 26, 2013. At that time, depending on market conditions and sellers' interest, we will consider the repurchase of shares either in a negotiated transaction with the holders of the Class A Shares or through open market repurchases.

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Income Taxes Deferred tax (Details 4) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Deferred tax liabilities:
Depreciation and amortization	$ 956.2	$ 761.6
Depletion	427.2	465.4
Partnership tax bases differences	104.0	105.4
Undistributed earnings of non-U.S. subsidiaries	215.8	215.8
Other liabilities	227.8	91.9
Total deferred tax liabilities	1,931.0	1,640.1
Before valuation allowance
Alternative minimum tax credit carryforwards	63.1	88.1
Capital loss carryforwards	6.9	7.1
Foreign tax credit carryforwards	528.0	529.7
Net operating loss carryforwards	158.6	168.8
Post-retirement and post-employment benefits	52.1	54.2
Reclamation and decommissioning accruals	237.6	220.2
Other assets	218.2	190.3
Subtotal	1,264.5	1,258.4
Valuation allowance	(93.6)	(180.2)
Net deferred tax assets	1,170.9	1,078.2
Net deferred tax liabilities	(760.1)	(561.9)
Deferred Tax Assets Foreign Tax Credits Netted Against Related Deferred Tax Liabilities	$ 380.1	$ 377.8

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Consolidated Statements of Shareholders Equity (Parentheticals) (USD $)	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Consolidated Statements Of Equity Parenthetical [Abstract]
Dividends per share	$ 1.000	$ 0.275	$ 0.20

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Financing Arrangements (Tables)

12 Months Ended

May 31, 2013

Debt Disclosure [Abstract]

Schedule of long-term debt, including current maturites

		May 31,	May 31,					Combination								Combination
		2013	2013			May 31,		Fair				May 31,		May 31,		Fair				May 31,
		Stated	Effective			2013		Market		Discount		2013		2012		Market		Discount		2012
		Interest	Interest	Maturity		Stated		Value		on Notes		Carrying		Stated		Value		on Notes		Carrying
(in millions)		Rate	Rate	Date		Value		Adjustment		Issuance		Value		Value		Adjustment		Issuance		Value
Industrial revenue and recovery zone bonds		1.53%	1.53%	2040	$	17.4	$	-	$	-	$	17.4	$	17.6	$	-	$	-	$	17.6
Unsecured notes		3.75% - 4.88%	4.30%	2021-2041		750.0		-		(7.4)		742.6		750.0		-		(8.1)		741.9
Unsecured debentures		7.30% - 7.38%	7.08%	2018-2028		236.1		3.3		-		239.4		236.1		3.7		-		239.8
Other		5.50% - 9.00%	7.70%	2014-2017		11.1		-		-		11.1		11.2		-		-		11.2
Total long-term debt						1,014.6		3.3		(7.4)		1,010.5		1,014.9		3.7		(8.1)		1,010.5
Less current portion						1.3		0.3		(0.7)		0.9		0.9		0.3		(0.7)		0.5
Total long-term debt,
	less current maturities				$	1,013.3	$	3.0		(6.7)	$	1,009.6	$	1,014.0	$	3.4		(7.4)	$	1,010.0

Scheduled maturities of long-term debt

(in millions)
2014		$	0.9
2015			0.6
2016			7.0
2017			1.5
2018			-
Thereafter			1,000.5
	Total	$	1,010.5

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Share-based Payments

12 Months Ended

May 31, 2013

Disclosure of Compensation Related Costs, Share Based Payments [Abstract]

Disclosure Of Compensation Related Costs Share Based Payments [Text Block]

19. SHARE-BASED PAYMENTS

We sponsor one share-based compensation plan. The Mosaic Company 2004 Omnibus Stock and Incentive Plan (the “Omnibus Plan”), which was approved by shareholders and became effective October 20, 2004 and amended most recently on May 11, 2011, permits the grant of shares and share options to employees for up to 25 million shares of common stock. The Omnibus Plan provides for grants of stock options, restricted stock, restricted stock units, performance units and a variety of other share-based and non-share-based awards. Our employees, officers, directors, consultants, agents, advisors, and independent contractors, as well as other designated individuals, are eligible to participate in the Omnibus Plan. Mosaic settles stock option exercises, restricted stock units and performance units with newly issued common shares. The Compensation Committee of the Board of Directors administers the Omnibus Plan subject to its provisions and applicable law.

Stock Options

Stock options are granted with an exercise price equal to the market price of our stock at the date of grant and have a ten-year contractual term. The fair value of each option award is estimated on the date of the grant using the Black-Scholes option valuation model. Stock options vest in equal annual installments in the first three years following the date of grant (graded vesting). Stock options are expensed on a straight-line basis over the required service period, based on the estimated fair value of the award on the date of grant, net of estimated forfeitures.

Valuation Assumptions

Assumptions used to calculate the fair value of stock options in each period are noted in the following table. Starting in fiscal 2012, expected volatility is based on the simple average of implied and historical volatility using the daily closing prices of the Company's stock for a period equal to the expected term of the option. Prior to fiscal 2012, expected volatility was based on the combination of our and IMC's historical six-year volatility of common stock. The expected term of the options is calculated using historical employee grant and exercise data. In fiscal 2011, the expected term of the options was calculated using the simplified method described in SEC Staff Accounting Bulletin 110, Use of a Simplified Method in Developing an Estimate of Expected Term of “Plain Vanilla” Share Options, under which the Company can take the midpoint of the vesting date and the full contractual term. The risk-free interest rate is based on the U.S. Treasury rate at the time of the grant for instruments of comparable life.

		Years ended May 31,
		2013	2012	2011
Weighted average assumptions used in option valuations:
	Expected volatility	47.70%	51.80%	60.46%
	Expected dividend yield	1.74%	0.28%	0.44%
	Expected term (in years)	7.0	5.0	6.0
	Risk-free interest rate	0.92%	1.46%	2.13%

A summary of the status of our stock options as of May 31, 2013, and activity during fiscal 2013, is as follows:

		Shares (in millions)		Weighted Average Exercise Price	Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of June 1, 2012		2.5	$	41.93	5.8	$	34.6
	Granted	0.3		57.32
	Exercised	(0.3)		26.94
Outstanding as of May 31, 2013		2.5	$	43.93	5.2	$	53.6
Exercisable as of May 31, 2013		2.0	$	40.33	4.5	$	51.0

The weighted-average grant date fair value of options granted during fiscal 2013, 2012 and 2011was $22.71, $30.96 and $26.38, respectively. The total intrinsic value of options exercised during fiscal 2013, 2012 and 2011was $6.8 million, $5.5 million and$54.1 million, respectively.

Restricted Stock Units

Restricted stock units are issued to various employees, officers and directors at a price equal to the market price of our stock at the date of grant. The fair value of restricted stock units is equal to the market price of our stock at the date of grant. Restricted stock units generally cliff vest after three years of continuous serviceand are expensed on a straight-line basis over the required service period, based on the estimated grant date fair value, net of estimated forfeitures.

A summary of the status of our restricted stock units as of May 31, 2013, and activity during fiscal 2013, is as follows:

		Shares (in millions)		Weighted Average Grant Date Fair Value Per Share
Restricted stock units as of June 1, 2012		0.6	$	54.47
	Granted	0.3		57.36
	Issued and canceled	(0.2)		53.20
Restricted stock units as of May 31, 2013		0.7	$	56.40

Performance Units

During fiscal 2013, approximately100,000 performance units were granted with a weighted average grant date fair value of $71.19. Final performance units awarded based on the increase or decrease, subject to certain limitations, in Mosaic's share price from the grant date to the third anniversary of the award, plus dividends. The beginning and ending stock prices are based on a 30 trading-day average stock price. Holders of the awards must be employed at the end of the performance period in order for any shares to vest.

The fair value of each performance unit is determined using a Monte Carlo simulation. This valuation methodology utilizes assumptions consistent with those of our other share-based awards and a range of ending stock prices; however, the expected term of the awards is three years, which impacts the assumptions used to calculate the fair value of performance units as shown in the table below.Performance units are considered equity-classified fixed awards measured at grant-date fair value and not subsequently re-measured. Performance units cliff vest after three years of continuous service. Performance units are expensedon a straight-line basis over the required service period, based on the estimated grant date fair value of the award net of estimate forfeitures.

A summary of the assumptions used to estimate the fair value of performance units is as follows:

		Years ended May 31,
		2013	2012
Weighted average assumptions used in performance unit valuations:
	Expected volatility	38.05%	54.72%
	Expected dividend yield	1.74%	0.28%
	Expected term (in years)	3.0	3.0
	Risk-free interest rate	0.31%	0.69%

A summary of our performanceunit activity during fiscal 2013 isas follows:

		Shares (in millions)		Weighted Average Grant Date Fair Value Per Share
Outstanding as of June 1, 2012		0.1	$	81.10
	Granted	0.1		71.19
Outstanding as of May 31, 2013		0.2	$	75.15

We recorded share-based compensation expense of$32.2million for fiscal 2013, $25.2million for fiscal 2012 and $21.9million for fiscal 2011. The tax benefit related to share-based compensation expense was $11.4million for fiscal 2013,$8.7million for fiscal 2012 and $7.8 million for fiscal 2011.

As of May 31, 2013, there was $17.9 million of total unrecognized compensation cost related to options, restricted stock units and performance units granted under the Omnibus Plan. The unrecognized compensation cost is expected to be recognized over a weighted-average period of 1.9years. The total fair value of options vested in fiscal 2013 and 2012was $9.5 million and $10.2 million, respectively.

Cash received from exercises of all share-based payment arrangements for fiscal 2013, 2012 and 2011was $6.0 million, $3.0 million and $20.3million, respectively. In fiscal 2013, 2012 and 2011 we received a tax benefit for tax deductions from options of $6.4 million, $3.7 million and$20.9 million, respectively.

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Business Segments

12 Months Ended

May 31, 2013

Segment Reporting [Abstract]

Business Segments

23. BUSINESS SEGMENTS

The reportable segments are determined by management based upon factors such as products and services, production processes, technologies, market dynamics, and for which segment financial information is available for our chief operating decision maker.

For a description of our business segments see Note 1of our Notes to Consolidated Financial Statements. We evaluate performance based on the operating earnings of the respective business segments, which includes certain allocations of corporate selling, general and administrative expenses. The segment results may not represent the actual results that would be expected if they were independent, stand-alone businesses. Corporate, Eliminations and Other primarily represents unallocated corporate office activities and eliminations. All intersegment transactions are eliminated within Corporate, Eliminations and other.

Segment information for fiscal 2013, 2012 and 2011 is as follows:

(in millions)			Phosphates		Potash		Corporate, Eliminations and Other		Total
2013
Net sales to external customers		$	6,494.6	$	3,469.1	$	10.4	$	9,974.1
Intersegment net sales			-		60.2		(60.2)		-
Net sales			6,494.6		3,529.3		(49.8)		9,974.1
Gross margin			1,162.2		1,611.3		(13.3)		2,760.2
Operating earnings (loss)			848.1		1,393.0		(31.5)		2,209.6
Capital expenditures			427.5		1,017.7		143.1		1,588.3
Depreciation, depletion and
	amortization expense		287.3		301.9		15.6		604.8
Equity in net earnings of
	nonconsolidated companies		16.4		-		1.9		18.3
2012
Net sales to external customers		$	7,839.2	$	3,263.1	$	5.5	$	11,107.8
Intersegment net sales			-		38.2		(38.2)		-
Net sales			7,839.2		3,301.3		(32.7)		11,107.8
Gross margin			1,466.9		1,622.0		(3.9)		3,085.0
Operating earnings (loss)			1,179.1		1,457.3		(25.3)		2,611.1
Capital expenditures			407.9		1,171.4		60.0		1,639.3
Depreciation, depletion and
	amortization expense		263.9		233.1		11.1		508.1
Equity in net earnings of
	nonconsolidated companies		11.9		-		1.4		13.3
2011
Net sales to external customers		$	6,895.2	$	3,028.3	$	14.3	$	9,937.8
Intersegment net sales			-		32.7		(32.7)		-
Net sales			6,895.2		3,061.0		(18.4)		9,937.8
Gross margin			1,654.0		1,469.0		(1.2)		3,121.8
Operating earnings (loss)			1,322.0		1,352.5		(10.3)		2,664.2
Capital expenditures			306.7		906.9		49.6		1,263.2
Depreciation, depletion and
	amortization expense		248.1		188.9		10.4		447.4
Equity in net earnings (loss) of
	nonconsolidated companies		(8.8)		-		3.8		(5.0)
Total assets as of May 31, 2013		$	9,930.9	$	9,759.8	$	(1,604.7)	$	18,086.0
Total assets as of May 31, 2012			9,123.7		11,324.8		(3,758.1)		16,690.4

Financial information relating to our operations by geographic area is as follows:

				Years Ended May 31,
(in millions)				2013		2012		2011
Net sales(a):
	Brazil		$	2,069.3	$	2,161.6	$	1,810.1
	Canpotex(b)			1,239.8		1,298.9		992.9
	Canada			686.3		786.3		629.9
	India			475.2		1,579.7		1,565.9
	Argentina			258.3		266.7		233.3
	Japan			188.2		177.5		166.1
	Australia			177.5		290.1		237.8
	China			173.3		160.4		115.9
	Colombia			143.5		155.9		157.6
	Mexico			128.9		90.5		101.7
	Chile			116.5		121.1		115.9
	Thailand			88.9		94.0		91.1
	Peru			56.9		95.1		6.6
	Other			271.7		209.3		193.7
		Total international countries		6,074.3		7,487.1		6,418.5
	United States			3,899.8		3,620.7		3,519.3
	Consolidated		$	9,974.1	$	11,107.8	$	9,937.8

(a)       Revenues are attributed to countries based on location of customer.

(b)       The export association of the Saskatchewan potash producers.

				May 31,		May 31,
(in millions)				2013		2012
Long-lived assets:
	Canada		$	5,264.8	$	4,593.2
	Brazil			178.1		158.6
	Other			52.1		60.5
		Total international countries		5,495.0		4,812.3
	United States			3,653.2		3,402.0
	Consolidated		$	9,148.2	$	8,214.3

Excluded from the table above as of May 31, 2013 and 2012, are goodwill of $1,844.6 million and $1,844.4 million and deferred income taxes of $212.7 million and $50.6 million, respectively.

Net sales by product type for fiscal 2013, 2012 and 2011 are as follows:

(in millions)			2013		2012		2011
Sales by product type:
	Phosphate Crop Nutrients	$	4,106.1	$	5,418.4	$	4,822.4
	Potash Crop Nutrients		3,434.5		3,174.4		3,002.8
	Crop Nutrient Blends		1,472.3		1,517.1		1,252.5
	Other(a)		961.2		997.9		860.1
		$	9,974.1	$	11,107.8	$	9,937.8
(a)	Includes sales for animal feed ingredients and industrial potash.

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Income Taxes Effective tax rate (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
The components of earnings from consolidated companies before income taxes, and the effects of significant adjustments to tax computed at the federal statutory rate, were as follows:
United States earnings	$ 1,158.1	$ 1,412.7	$ 1,477.5
Non-U.S. earnings	1,056.4	1,216.2	1,793.8
Earnings from consolidated companies before income taxes	2,214.5	2,628.9	3,271.3
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Computed tax at the federal statutory rate of 35%	35.00%	35.00%	35.00%
State and local income taxes, net of federal income tax benefit	1.60%	1.60%	1.30%
Percentage depletion in excess of basis	(7.10%)	(6.60%)	(4.50%)
Impact of offshore earnings	(10.20%)	(2.90%)	(7.50%)
Change in valuation allowance	(3.60%)	0.40%	0.50%
Other items (none in excess of 5% of computed tax)	(0.30%)	(0.40%)	(1.80%)
Effective tax rate	15.40%	27.10%	23.00%
IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract
Tax impact from sale of Fosfertil	$ 341.0	$ 711.4	$ 752.8

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Business Segments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Segment Reporting Information [Line Items]
Net sales	$ 9,974.1	$ 11,107.8	$ 9,937.8
Gross margin	2,760.2	3,085.0	3,121.8
Operating earnings (loss)	2,209.6	2,611.1	2,664.2
Capital expenditures	1,588.3	1,639.3	1,263.2
Depreciation, depletion and amortization expense	604.8	508.1	447.4
Equity in net earnings of non consolidated companies	18.3	13.3	(5.0)
Total assets	18,086.0	16,690.4
Phosphates Segment [Member]
Segment Reporting Information [Line Items]
Net sales to external customers	6,494.6	7,839.2	6,895.2
Intersegment net sales	0	0	0
Net sales	6,494.6	7,839.2	6,895.2
Gross margin	1,162.2	1,466.9	1,654.0
Operating earnings (loss)	848.1	1,179.1	1,322.0
Capital expenditures	427.5	407.9	306.7
Depreciation, depletion and amortization expense	287.3	263.9	248.1
Equity in net earnings of non consolidated companies	16.4	11.9	(8.8)
Total assets	9,930.9	9,123.7
Potash Segment [Member]
Segment Reporting Information [Line Items]
Net sales to external customers	3,469.1	3,263.1	3,028.3
Intersegment net sales	60.2	38.2	32.7
Net sales	3,529.3	3,301.3	3,061.0
Gross margin	1,611.3	1,622.0	1,469.0
Operating earnings (loss)	1,393.0	1,457.3	1,352.5
Capital expenditures	1,017.7	1,171.4	906.9
Depreciation, depletion and amortization expense	301.9	233.1	188.9
Equity in net earnings of non consolidated companies	0	0	0
Total assets	9,759.8	11,324.8
Corporate Eliminations And Other Segment [Member]
Segment Reporting Information [Line Items]
Net sales to external customers	10.4	5.5	14.3
Intersegment net sales	(60.2)	(38.2)	(32.7)
Net sales	(49.8)	(32.7)	(18.4)
Gross margin	(13.3)	(3.9)	(1.2)
Operating earnings (loss)	(31.5)	(25.3)	(10.3)
Capital expenditures	143.1	60.0	49.6
Depreciation, depletion and amortization expense	15.6	11.1	10.4
Equity in net earnings of non consolidated companies	1.9	1.4	3.8
Total assets	$ (1,604.7)	$ (3,758.1)

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Earnings Per Share (Tables)

12 Months Ended

May 31, 2013

Earnings Per Share [Abstract]

Schedule of earnings per share

The following is a reconciliation of the numerator and denominator for the basic and diluted EPS computations:

		Years ended May 31,
(in millions)		2013		2012		2011
Net earnings attributable to Mosaic	$	1,888.7	$	1,930.2	$	2,514.6
Basic weighted average common shares outstanding		425.7		435.2		446.0
Dilutive impact of share-based awards		1.2		1.3		1.5
Diluted weighted average common shares outstanding		426.9		436.5		447.5
Basic net earnings per share attributable to Mosaic	$	4.44	$	4.44	$	5.64
Diluted net earnings per share attributable to Mosaic	$	4.42	$	4.42	$	5.62

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Income Taxes Provision for taxes (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Current:
Federal	$ 138.8	$ 314.5	$ 134.9
State	42.5	61.0	52.0
Non-U.S.	81.5	77.0	380.1
Total Current	262.8	452.5	567.0
Deferred:
Federal	(32.9)	7.4	99.2
State	(14.1)	9.0	7.0
Non-U.S.	125.2	242.5	79.6
Total Deferred	78.2	258.9	185.8
Provision for income taxes	$ 341.0	$ 711.4	$ 752.8

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Share-based Payments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation cost related to options, restricted stock units and performance units granted under the Omnibus Plan.	$ 17.9
The average weighted-average period the unrecognized compesation cost will be recognized (years)	1 year 10 months 24 days
Omnibus Stock and Incentive Plan 2004 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Description	The Omnibus Plan provides for grants of stock options, restricted stock, restricted stock units, performance units and a variety of other share-based and non-share-based awards. Our employees, officers, directors, consultants, agents, advisors, and independent contractors, as well as other designated individuals, are eligible to participate in the Omnibus Plan. Mosaic settles stock option exercises, restricted stock units and performance units with newly issued common shares. The Compensation Committee of the Board of Directors administers the Omnibus Plan subject to its provisions and applicable law.
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized	25.0
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Terms Of Award	Stock options are granted with an exercise price equal to the market price of our stock at the date of grant and have a ten-year contractual term.

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Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Cost of goods sold	$ 7,213.9	$ 8,022.8	$ 6,816.0
Sales And Receivables Associated With Canpotex [Line Items]
Receivables, net	1,015.7	751.6
Sales Revenue Goods Net	9,974.1	11,107.8	9,937.8
Accounts Receivable Net Noncurrent Abstract
Accounts Receivable Gross Noncurrent	13.9	16.9
Allowance For Doubtful Accounts Receivable Noncurrent	11.3	13.5
Assets related to PIS and Cofins and income tax credits in Brazil	80.0
Canpotex [Member]
Sales And Receivables Associated With Canpotex [Line Items]
Receivables, net	191.8	200.7
Sales Revenue Goods Net	1,200.0	1,300.0	992.9
Canadian Resources Taxes and Royalties [Member]
Cost of goods sold	$ 307.9	$ 327.1	$ 294.2

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Related Party Transactions (Tables)

12 Months Ended

May 31, 2013

Related Party Transactions [Abstract]

Schedule of related party transactions

In summary, the Consolidated Statements of Earnings included the following transactions with Cargill, while Cargill was considered a related party:

			Year ended May 31,
(in millions)			2011
Transactions with Cargill included in net sales		$	238.1
Transactions with Cargill included in cost of goods sold			146.8
Transactions with Cargill included in selling, general
	and administrative expenses		6.1
Interest income received from Cargill			0.2

The Consolidated Statements of Earnings included the following transactions with our non-consolidated companies:

			Years ended May 31,
(in millions)			2013		2012		2011
Transactions with non-consolidated companies
	included in net sales	$	1,263.9	$	1,321.2	$	1,015.7
Transactions with non-consolidated companies
	included in cost of goods sold		632.0		557.3		511.3

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Accounting for Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

May 31, 2013

Accounting For Derivative Instruments And Hedging Activities [Abstract]

Schedule Of Derivative Instruments Notional Amounts

As of May 31, 2013, the following is the total absolute notional volume associated with our outstanding derivative instruments:

(in millions of Units)			May 31,	May 31,
Instrument	Derivative Category	Unit of Measure	2013	2012
Foreign currency derivatives	Foreign Currency	US Dollars	1,459.7	1,869.2
Natural gas derivatives	Commodity	MMbtu	15.2	24.3
Ocean freight contracts	Freight	Tonnes	1.5	2.1

Schedule of unrealized gains (losses) on derivative instruments related to foreign currency exchange contracts, commodities contracts and freight and their location in our Consolidated Statements of Earnings

Below is a table that shows the unrealized gains and (losses) on derivative instruments related to foreign currency exchange contracts, commodities contracts, and freight:

			Gain (loss)
(in millions)			Years ended May 31,
Derivative Instrument	Location		2013		2012		2011
Foreign currency derivatives	Cost of goods sold	$	(1.6)	$	(23.9)	$	6.8
Foreign currency derivatives	Foreign currency transaction gain		(13.8)		(4.0)		7.9
Commodity derivatives	Cost of goods sold		16.1		(16.0)		8.3
Freight derivatives	Cost of goods sold		0.7		(2.0)		(2.0)

Schedule of gross fair market value of all derivative instruments and their location in our Consolidated Statements of Earnings

The gross fair market value of all derivative instruments and their location in our Consolidated Balance Sheet are shown by those in an asset or liability position and are further categorized by foreign currency, commodity, and freight derivatives.

(in millions)	Asset Derivatives(a)			Liability Derivatives(a)
			May 31,			May 31,
Derivative Instrument	Location		2013	Location		2013
Foreign currency derivatives	Other current assets	$	10.7	Accrued liabilities	$	(38.6)
Commodity derivatives	Other current assets		4.8	Accrued liabilities		(6.1)
Commodity derivatives	Other assets		0.2	Other noncurrent liabilities		-
Freight derivatives	Other current assets		1.7	Accrued liabilities		(0.4)
Total		$	17.4		$	(45.1)
(in millions)	Asset Derivatives(a)			Liability Derivatives(a)
			May 31,			May 31,
Derivative Instrument	Location		2012	Location		2012
Foreign currency derivatives	Other current assets	$	23.8	Accrued liabilities	$	(36.7)
Commodity derivatives	Other current assets		5.8	Accrued liabilities		(15.2)
Commodity derivatives	Other assets		-	Other noncurrent liabilities		(8.3)
Freight derivatives	Other current assets		1.1	Accrued liabilities		(0.5)
Total		$	30.7		$	(60.7)

• In accordance with U.S. GAAP the above amounts are disclosed at gross fair value and the amounts recorded on the Consolidated Balance Sheet are presented on a net basis when permitted.

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Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Statement of Income and Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 1,891.8	$ 1,930.8	$ 2,513.5
Other comprehensive income, net of tax
Foreign currency translation, net of tax	(46.6)	(307.4)	387.4
Net actuarial (loss) gain and prior service cost, net of tax	(5.7)	(28.7)	36.0
Other comprehensive income (loss)	(52.3)	(336.1)	423.4
Comprehensive income (loss)	1,839.5	1,594.7	2,936.9
Less: Comprehensive income (loss) attributable to the noncontrolling interest	2.4	(3.3)	1.5
Comprehensive income attributable to Mosaic	$ 1,837.1	$ 1,598.0	$ 2,935.4

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Recently Issued Accounting Guidance

12 Months Ended

May 31, 2013

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recently Issued Accounting Guidance

5. RECENTLY ISSUED ACCOUNTING GUIDANCE

Recently Adopted Accounting Pronouncements

In June 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2011-05, “Comprehensive Income (Topic 220): Presentation of Comprehensive Income” which requires comprehensive income to be reported in either a single statement or in two consecutive statements reporting net income and other comprehensive income. The amendment does not change what items are reported in other comprehensive income. Additionally, in December 2011, the FASB issued ASU No. 2011-12, “Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05” which indefinitely defers the requirement in ASU No. 2011-05 to present reclassification adjustments out of accumulated other comprehensive income by component in both the statement in which net income is presented and the statement in which other comprehensive income is presented. During the deferral period, the existing requirements in U.S. GAAP for the presentation of reclassification adjustments must continue to be followed. These standards became effective for our fiscal quarter beginning June 1, 2012, and did not have an impact on our results of operations or financial position.

In September 2011, the FASB issued ASU No. 2011-08, “Intangibles – Goodwill and Other (Topic 350): Testing for Goodwill Impairment” which permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test described in Topic 350. We adopted this guidance for our annual goodwill impairment test for fiscal 2013, which was conducted in the second quarter. The adoption of this guidance did not have an impact on our results of operations or financial position.

Pronouncements Issued But Not Yet Adopted

In December 2011, the FASB issued ASU No. 2011-11, “Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities” which enhances current disclosures about financial instruments and derivative instruments that are either offset on the statement of financial position or subject to an enforceable master netting arrangement or similar agreement, irrespective of whether they are offset on the statement of financial position. Entities are required to provide both net and gross information for these assets and liabilities in order to facilitate comparability between financial statements prepared on the basis of U.S. GAAP and those prepared on the basis of International Financial Reporting Standards (“IFRS”). In January 2013, the FASB issued ASU No. 2013-01, “Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities” to limit the scope of the new balance sheet offsetting disclosures to derivatives, repurchase agreements, and securities lending transactions to the extent that they are offset in the financial statements or subject to an enforceable master netting arrangement or similar agreement. These standards will be effective for us beginning June 1, 2013 with retrospective application required. As these standards address disclosure requirements only, we do not believe their adoption will have a material impact on our results of operations or financial position.

In February 2013, the FASB issued ASU No. 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income” which requires entities to disclose additional information about changes in and significant items reclassified out of accumulated other comprehensive income. This guidance is effective for us beginning June 1, 2013. As this standard addresses presentation and disclosure requirements only, we do not believe its adoption will have a material impact on our results of operations or financial position.

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Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Current assets:
Cash and cash equivalents	$ 3,697.1	$ 3,811.0
Accounts receivable, carrying amount	1,015.7	751.6
Inventories	1,557.3	1,237.6
Deferred income taxes	75.7	237.8
Other current assets	534.7	543.1
Total current assets	6,880.5	6,581.1
Property Plant And Equipment Net	8,486.8	7,545.9
Investments in nonconsolidated companies	431.5	454.2
Goodwill	1,844.6	1,844.4
Deferred income taxes noncurrent	212.7	50.6
Other assets	229.9	214.2
Total assets	18,086.0	16,690.4
Current liabilities:
Short-term debt, carrying amount	68.7	42.5
Current maturities of long-term debt	0.9	0.5
Accounts payable	763.1	912.4
Accrued liabilities	845.1	899.9
Deferred income taxes	87.1	62.4
Total current liabilities	1,764.9	1,917.7
Long-term debt, less current maturities	1,009.6	1,010.0
Deferred income taxes	961.4	787.9
Other noncurrent liabilities	907.2	975.4
Stockholders' equity:
Preferred stock, $0.01 par value, 15.0 million shares authorized, none issued and outstanding as of May 31, 2011 and May 31, 2010	0	0
Capital in excess of par value	1,491.3	1,459.5
Retained earnings	11,603.4	10,141.3
Accumulated other comprehensive income	326.4	378.0
Total Mosaic stockholders equity	13,425.4	11,983.1
Non-controlling interests	17.5	16.3
Total equity	13,442.9	11,999.4
Total liabilities and equity	18,086.0	16,690.4
Common Class A [Member]
Stockholders' equity:
Common stock, value	1.3	1.3
Common Class B [Member]
Stockholders' equity:
Common stock, value	0	0
No Class Common Stock [Member]
Stockholders' equity:
Common stock, value	$ 3.0	$ 3.0

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Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net earnings attributable to Mosaic	$ 1,888.7	$ 1,930.2	$ 2,514.6
Basic weighted average common shares outstanding	425.7	435.2	446.0
Dilutive impact of share-based awards	1.2	1.3	1.5
Diluted weighted average common shares outstanding	426.9	436.5	447.5
Basic net earnings per share attributable to Mosaic	$ 4.44	$ 4.44	$ 5.64
Diluted net earnings per share attributable to Mosaic	$ 4.42	$ 4.42	$ 5.62
Earnings Per Share Additional Disclosure [Abstract]
Shares subject to issuance upon exercise of stock options, restricted stock awards and performance units	0.6	0.5	0.4

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Consolidated Statements of Earnings (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Consolidated Statement of Earnings
Net sales	$ 9,974.1	$ 11,107.8	$ 9,937.8
Cost of goods sold	7,213.9	8,022.8	6,816.0
Lower of cost or market write-down	0	0	0
Gross margin	2,760.2	3,085.0	3,121.8
Selling, general and administrative expenses	427.3	410.1	372.5
Other operating expenses (income)	123.3	63.8	85.1
Operating earnings	2,209.6	2,611.1	2,664.2
Interest expense, net	18.8	18.7	(5.1)
Foreign currency transaction (loss) gain	(15.9)	16.9	(56.3)
Equity Method Investment Realized Gain Loss On Disposal	0	0	685.6
Other income (expense)	2.0	(17.8)	(17.1)
Earnings from consolidated companies before income taxes	2,214.5	2,628.9	3,271.3
Provision for income taxes	341.0	711.4	752.8
Earnings from consolidated companies	1,873.5	1,917.5	2,518.5
Equity in net earnings (loss) of nonconsolidated companies	18.3	13.3	(5.0)
Net earnings including noncontrolling interests	1,891.8	1,930.8	2,513.5
Less: Net earnings attributable to non-contolling interests	3.1	0.6	(1.1)
Net earnings attributable to Mosaic	$ 1,888.7	$ 1,930.2	$ 2,514.6
Basic net earnings per share attributable to Mosaic	$ 4.44	$ 4.44	$ 5.64
Diluted net earnings per share attributable to Mosaic	$ 4.42	$ 4.42	$ 5.62
Basic weighted average number of shares outstanding	425.7	435.2	446.0
Diluted weighted average number of shares outstanding	426.9	436.5	447.5

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Business Segments (Tables)

12 Months Ended

May 31, 2013

Segment Reporting [Abstract]

Schedule of segment reporting by segment

Segment information for fiscal 2013, 2012 and 2011 is as follows:

(in millions)			Phosphates		Potash		Corporate, Eliminations and Other		Total
2013
Net sales to external customers		$	6,494.6	$	3,469.1	$	10.4	$	9,974.1
Intersegment net sales			-		60.2		(60.2)		-
Net sales			6,494.6		3,529.3		(49.8)		9,974.1
Gross margin			1,162.2		1,611.3		(13.3)		2,760.2
Operating earnings (loss)			848.1		1,393.0		(31.5)		2,209.6
Capital expenditures			427.5		1,017.7		143.1		1,588.3
Depreciation, depletion and
	amortization expense		287.3		301.9		15.6		604.8
Equity in net earnings of
	nonconsolidated companies		16.4		-		1.9		18.3
2012
Net sales to external customers		$	7,839.2	$	3,263.1	$	5.5	$	11,107.8
Intersegment net sales			-		38.2		(38.2)		-
Net sales			7,839.2		3,301.3		(32.7)		11,107.8
Gross margin			1,466.9		1,622.0		(3.9)		3,085.0
Operating earnings (loss)			1,179.1		1,457.3		(25.3)		2,611.1
Capital expenditures			407.9		1,171.4		60.0		1,639.3
Depreciation, depletion and
	amortization expense		263.9		233.1		11.1		508.1
Equity in net earnings of
	nonconsolidated companies		11.9		-		1.4		13.3
2011
Net sales to external customers		$	6,895.2	$	3,028.3	$	14.3	$	9,937.8
Intersegment net sales			-		32.7		(32.7)		-
Net sales			6,895.2		3,061.0		(18.4)		9,937.8
Gross margin			1,654.0		1,469.0		(1.2)		3,121.8
Operating earnings (loss)			1,322.0		1,352.5		(10.3)		2,664.2
Capital expenditures			306.7		906.9		49.6		1,263.2
Depreciation, depletion and
	amortization expense		248.1		188.9		10.4		447.4
Equity in net earnings (loss) of
	nonconsolidated companies		(8.8)		-		3.8		(5.0)
Total assets as of May 31, 2013		$	9,930.9	$	9,759.8	$	(1,604.7)	$	18,086.0
Total assets as of May 31, 2012			9,123.7		11,324.8		(3,758.1)		16,690.4

Financial Information Relating to Our Operations by Geographic Area

				Years Ended May 31,
(in millions)				2013		2012		2011
Net sales(a):
	Brazil		$	2,069.3	$	2,161.6	$	1,810.1
	Canpotex(b)			1,239.8		1,298.9		992.9
	Canada			686.3		786.3		629.9
	India			475.2		1,579.7		1,565.9
	Argentina			258.3		266.7		233.3
	Japan			188.2		177.5		166.1
	Australia			177.5		290.1		237.8
	China			173.3		160.4		115.9
	Colombia			143.5		155.9		157.6
	Mexico			128.9		90.5		101.7
	Chile			116.5		121.1		115.9
	Thailand			88.9		94.0		91.1
	Peru			56.9		95.1		6.6
	Other			271.7		209.3		193.7
		Total international countries		6,074.3		7,487.1		6,418.5
	United States			3,899.8		3,620.7		3,519.3
	Consolidated		$	9,974.1	$	11,107.8	$	9,937.8

				May 31,		May 31,
(in millions)				2013		2012
Long-lived assets:
	Canada		$	5,264.8	$	4,593.2
	Brazil			178.1		158.6
	Other			52.1		60.5
		Total international countries		5,495.0		4,812.3
	United States			3,653.2		3,402.0
	Consolidated		$	9,148.2	$	8,214.3

Net Sales by Product Type

Excluded from the table above as of May 31, 2013 and 2012, are goodwill of $1,844.6 million and $1,844.4 million and deferred income taxes of $212.7 million and $50.6 million, respectively.

Net sales by product type for fiscal 2013, 2012 and 2011 are as follows:

(in millions)			2013		2012		2011
Sales by product type:
	Phosphate Crop Nutrients	$	4,106.1	$	5,418.4	$	4,822.4
	Potash Crop Nutrients		3,434.5		3,174.4		3,002.8
	Crop Nutrient Blends		1,472.3		1,517.1		1,252.5
	Other(a)		961.2		997.9		860.1
		$	9,974.1	$	11,107.8	$	9,937.8
(a)	Includes sales for animal feed ingredients and industrial potash.

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Accounting for Derivative Instruments and Hedging Activities (Details 3) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Derivative Instruments Fair Value Assets [Abstract]
Total fair value of derivative assets	$ 17.4	$ 30.7
Derivative Instruments Fair Value Liabilities [Abstract]
Total fair value of derivative liabilities	(45.1)	(60.7)
Foreign Exchange Contract [Member] | Other Current Assets [Member]
Derivative Instruments Fair Value Assets [Abstract]
Total fair value of derivative assets	10.7	23.8
Foreign Exchange Contract [Member] | Accrued liabilities [Member]
Derivative Instruments Fair Value Liabilities [Abstract]
Total fair value of derivative liabilities	(38.6)	(36.7)
Commodity Contract (MMbtu) [Member] | Other Current Assets [Member]
Derivative Instruments Fair Value Assets [Abstract]
Total fair value of derivative assets	4.8	5.8
Commodity Contract (MMbtu) [Member] | Other assets [Member]
Derivative Instruments Fair Value Assets [Abstract]
Total fair value of derivative assets	0.2	0
Commodity Contract (MMbtu) [Member] | Accrued liabilities [Member]
Derivative Instruments Fair Value Liabilities [Abstract]
Total fair value of derivative liabilities	(6.1)	(15.2)
Commodity Contract (MMbtu) [Member] | Other Noncurrent Liabilities [Member]
Derivative Instruments Fair Value Liabilities [Abstract]
Total fair value of derivative liabilities	0	(8.3)
Freight Contracts [Member] | Other Current Assets [Member]
Derivative Instruments Fair Value Assets [Abstract]
Total fair value of derivative assets	1.7	1.1
Freight Contracts [Member] | Accrued liabilities [Member]
Derivative Instruments Fair Value Liabilities [Abstract]
Total fair value of derivative liabilities	$ (0.4)	$ (0.5)

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Income Taxes Valuation Allowances & Uncertain Tax Provisions (Details 6) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Changes in unrecognized tax benefits for all jurisdictions were as follows:
Gross unrecognized tax benefits	$ 476.9	$ 263.5
Prior year tax positions - increases	7.7	103.1
Current year tax positions	36.6	146.9
Prior year tax positions - decreases	(204.3)	(34.8)
Settlements	0	0
Effect of currency translation on unrecognized tax benefits	(0.1)	(1.8)
Gross unrecognized tax benefits	316.8	476.9	263.5
The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate in future periods	106.4
Accrued interest and penalties related to unrecognized tax benefits, which are reflected in other noncurrent liabilities	53.8	52.0
Gross decrease that impacts our effective tax rate due to the resolution of certain tax matters	179.3
Valuation Allowance [Abstract]
Net change in the deferred tax asset valuation allowance during the period	86.6	29.0	52.1
Foreign Country [Member]
Changes in unrecognized tax benefits for all jurisdictions were as follows:
Prior year tax positions - decreases	(187.7)
Reasonably possible gross unrecognized tax benefit decrease associated with non-U.S. subsidiaries	$ 30.0

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Commitments

12 Months Ended

May 31, 2013

Commitments And Contingencies Disclosure [Abstract]

Commitments

20. COMMITMENTS

We lease certain plants, warehouses, terminals, office facilities, railcars and various types of equipment under operating leases, some of which include rent payment escalation clauses, with lease terms ranging from one to ten years. In addition to minimum lease payments, some of our office facility leases require payment of our proportionate share of real estate taxes and building operating expenses.

We havelong-term agreements for the purchase of sulfur which is used in the production of phosphoric acid. In addition, we have long-term agreements for the purchase of raw materials, including a commercial offtake agreement with the Miski Mayo Mine for phosphate rock, used to produce phosphate products. We have long-term agreements for the purchase of natural gas, which is a significant raw material, used primarily in the solution mining process in our Potash segment and used in our phosphate concentrates plants. Also, we have agreements for capital expenditures primarily in our Potash segments related to our expansion projects.

A schedule of future minimum long-term purchase commitments, based on May 31, 2013 market prices, and minimum lease payments under non-cancelable operating leases as of May 31, 2013 follows:

(in millions)		Purchase Commitments		Operating Leases
2014	$	1,872.5	$	50.2
2015		740.3		35.5
2016		446.8		26.9
2017		144.0		21.5
2018		133.3		18.0
Subsequent years		2,073.3		39.6
	$	5,410.2	$	191.7

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Accounting for Asset Retirement Obligations

12 Months Ended

May 31, 2013

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation Disclosure [Text Block]

14. ACCOUNTING FOR ASSET RETIREMENT OBLIGATIONS

We recognize AROs in the period in which we have an existing legal obligation associated with the retirement of a tangible long-lived asset, and the amount of the liability can be reasonably estimated. The ARO is recognized at fair value when the liability is incurred with a corresponding increase in the carrying amount of the related long lived asset. We depreciate the tangible asset over its estimated useful life. Our legal obligations related to asset retirement require us to: (i) reclaim lands disturbed by mining as a condition to receive permits to mine phosphate ore reserves; (ii) treat low pH process water in phosphogypsum management systems (the “Gypstacks”) to neutralize acidity; (iii) close and monitor Gypstacks at our Florida and Louisiana facilities at the end of their useful lives; (iv) remediate certain other conditional obligations; (v) remove all surface structures and equipment, plug and abandon mine shafts, contour and revegetate, as necessary, and monitor for five years after closing our Carlsbad, New Mexico facility and (vi)decommission facilities, manage tailings and execute site reclamation at our Saskatchewan potash minesat the end of their useful lives. The estimated liability for these legal obligations is based on the estimated cost to satisfy the above obligations which is discounted using a credit-adjusted risk-free rate.

A reconciliation of our AROs is as follows:

		May 31,
(in millions)		2013		2012
AROs, beginning of year	$	600.3	$	573.1
Liabilities incurred		38.7		27.8
Liabilities settled		(73.2)		(98.4)
Accretion expense		33.3		32.4
Revisions in estimated cash flows		59.4		65.4
AROs, end of year		658.5		600.3
Less current portion		83.5		87.0
	$	575.0	$	513.3

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Business Segments (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	$ 9,974.1	$ 11,107.8	$ 9,937.8
Product Type One [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	4,106.1	5,418.4	4,822.4
Product Type Two [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	3,434.5	3,174.4	3,002.8
Product Type Three [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	1,472.3	1,517.1	1,252.5
Other Product Types [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	$ 961.2	$ 997.9	$ 860.1

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Accounting for Asset Retirement Obligations (Tables)

12 Months Ended

May 31, 2013

Asset Retirement Obligation Disclosure [Abstract]

A reconciliation of our AROs is as follows:

		May 31,
(in millions)		2013		2012
AROs, beginning of year	$	600.3	$	573.1
Liabilities incurred		38.7		27.8
Liabilities settled		(73.2)		(98.4)
Accretion expense		33.3		32.4
Revisions in estimated cash flows		59.4		65.4
AROs, end of year		658.5		600.3
Less current portion		83.5		87.0
	$	575.0	$	513.3

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Accounting for Derivative Instruments and Hedging Activities (Details) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Foreign Exchange Contract [Member]
Derivative Instrument
Foreign currency derivatives	$ 1,459.7	$ 1,869.2
Commodity Contract (MMbtu) [Member]
Derivative Instrument
Total notional quantity of open contracts	15,200,000	24,300,000
Freight Contracts [Member]
Derivative Instrument
Total notional quantity of open contracts	1,500,000	2,100,000

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Cargill Transaction (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended		3 Months Ended	12 Months Ended
	Sep. 29, 2011	Oct. 06, 2011	Nov. 17, 2011	May 31, 2013	May 31, 2012	May 31, 2011
Cargill Transaction [Abstract]
Former percentage ownership by Cargill and certain of its subsidiaries				64.00%
Conversion of Stock [Line Items]
Conversion of Stock, Type of Stock Converted	Class A Common Stock, Series A-4	Class B Common Stock
(Contributions by) Distributions to Cargill, Inc.				$ 0	$ 18.5	$ 0
Class of Stock Disclosures [Abstract]
Stock Repurchased During Period, Shares			21.3
Common Stock, Redemption Price Per Share			$ 54.58
Common Stock, Redemption Date			Nov. 16, 2011
Repurchase of Class A common stock				$ 0	$ 1,162.5	$ 0
Shares Designated To Be Sold			157.0
Shares Received By Exchanging Cargill Stockholders				128.8
Shares Received By Exchanging Cargill Stockholders After Split Off				178.3
Percentage Of Outstanding Shares Held By Cargill After Split Off				40.00%
Percentage Voting Power Of Cargill After Split Off				82.00%
Shares Received By Cargill Debt Holders				107.5
Shares Sold Secondary Offer				115.0
Common Class A [Member]
Conversion of Stock [Line Items]
Conversion of Stock, Shares Converted	(20.7)	113.0
Common Class B [Member]
Conversion of Stock [Line Items]
Conversion of Stock, Shares Converted		(113.0)
No Class Common Stock [Member]
Conversion of Stock [Line Items]
Conversion of Stock, Shares Converted	20.7

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Goodwill (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012
Goodwill [Line Items]
Beginning balance	$ 1,844.4	$ 1,829.8
Foreign currency translation	(0.2)	(14.6)
Ending balance	1,844.6	1,844.4
Goodwill determined to be tax deductible	151.6
Phosphates Segment [Member]
Goodwill [Line Items]
Beginning balance	546.6	534.7
Foreign currency translation		(11.9)
and other	0
Ending balance	546.6	546.6
Potash Segment [Member]
Goodwill [Line Items]
Beginning balance	1,297.8	1,295.1
Foreign currency translation	(0.2)	(2.7)
Ending balance	$ 1,298.0	$ 1,297.8

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Investments in Non-Consolidated Companies (Tables)

12 Months Ended

May 31, 2013

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Equity Method Investments [Table Text Block]

A summary of our equity-method investments, which were in operation as of May 31, 2013, is as follows:

Entity	Economic Interest
Gulf Sulphur Services LTD., LLLP	50.0%
River Bend Ag, LLC	50.0%
IFC S.A.	45.0%
Yunnan Three Circles Sinochem Cargill Fertilizers Co. Ltd.	35.0%
Miski Mayo Mine	35.0%
Canpotex	43.0%

The summarized financial information shown below includes all non-consolidated companies carried on the equity method.

	May 31,
(in millions)		2013		2012		2011
Net sales	$	4,475.2	$	4,938.4	$	4,061.7
Net earnings		67.5		97.9		0.5
Mosaic's share of equity in net earnings (loss)		18.3		13.3		(5.0)
Total assets		1,841.4		1,776.0		1,690.6
Total liabilities		1,149.8		1,005.0		1,022.5
Mosaic's share of equity in net assets		256.4		282.8		247.2

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Other Financial Statement Data (Tables)

12 Months Ended

May 31, 2013

Other Financial Statement Data [Abstract]

Schedule of Other Assets and Other Liabilities [Table Text Block]

The following provides additional information concerning selected balance sheet accounts:

					May 31,
		(in millions)			2013		2012
		Receivables
			Trade	$	933.9	$	706.9
			Non-trade		86.5		49.6
					1,020.4		756.5
			Less allowance for doubtful accounts		4.7		4.9
				$	1,015.7	$	751.6
		Inventories
			Raw materials	$	43.0	$	61.8
			Work in process		445.8		340.1
			Finished goods		991.3		764.8
			Operating materials and supplies		77.2		70.9
				$	1,557.3	$	1,237.6
		Other current assets
			Final price deferred(a)	$	137.1	$	152.8
			Income and other taxes receivable		267.6		214.0
			Prepaid expenses		98.2		132.1
			Other		31.8		44.2
				$	534.7	$	543.1
		Accrued liabilities
			Non-income taxes	$	81.1	$	78.5
			Payroll and employee benefits		146.6		119.6
			Asset retirement obligations		83.5		87.0
			Customer prepayments		243.3		323.0
			Other		290.6		291.8
				$	845.1	$	899.9
		Other noncurrent liabilities
			Asset retirement obligations	$	575.0	$	513.3
			Accrued pension and postretirement benefits		140.7		142.2
			Unrecognized tax benefits		45.2		159.7
			Other		146.3		160.2
				$	907.2	$	975.4
(a)	Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon. This has not been included in inventory as it is not held for sale.

Schedule of Other Nonoperating Income (Expense) [Table Text Block]

Interest expense, net was comprised of the following in fiscal 2013, 2012 and 2011:

		Years ended May 31,
(in millions)		2013		2012		2011
Interest income	$	18.8	$	20.1	$	22.5
Less interest expense		-		1.4		27.6
Interest income (expense), net	$	18.8	$	18.7	$	(5.1)

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Property, Plant and Equipment (Tables)

12 Months Ended

May 31, 2013

Property Plant And Equipment [Abstract]

Property Plant And Equipment [Table Text Block]

Property, plant and equipment consist of the following:

		May 31,
(in millions)		2013		2012
Land	$	188.7	$	187.7
Mineral properties and rights		2,886.7		2,791.0
Buildings and leasehold improvements		1,959.3		1,456.0
Machinery and equipment		5,793.7		4,872.6
Construction in-progress		1,419.2		1,522.8
		12,247.6		10,830.1
Less: accumulated depreciation and depletion		3,760.8		3,284.2
	$	8,486.8	$	7,545.9

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Other Financial Statement Data

12 Months Ended

May 31, 2013

Other Financial Statement Data [Abstract]

Other Financial Statement Data [Text Block]

4. OTHER FINANCIAL STATEMENT DATA

The following provides additional information concerning selected balance sheet accounts:

					May 31,
		(in millions)			2013		2012
		Receivables
			Trade	$	933.9	$	706.9
			Non-trade		86.5		49.6
					1,020.4		756.5
			Less allowance for doubtful accounts		4.7		4.9
				$	1,015.7	$	751.6
		Inventories
			Raw materials	$	43.0	$	61.8
			Work in process		445.8		340.1
			Finished goods		991.3		764.8
			Operating materials and supplies		77.2		70.9
				$	1,557.3	$	1,237.6
		Other current assets
			Final price deferred(a)	$	137.1	$	152.8
			Income and other taxes receivable		267.6		214.0
			Prepaid expenses		98.2		132.1
			Other		31.8		44.2
				$	534.7	$	543.1
		Accrued liabilities
			Non-income taxes	$	81.1	$	78.5
			Payroll and employee benefits		146.6		119.6
			Asset retirement obligations		83.5		87.0
			Customer prepayments		243.3		323.0
			Other		290.6		291.8
				$	845.1	$	899.9
		Other noncurrent liabilities
			Asset retirement obligations	$	575.0	$	513.3
			Accrued pension and postretirement benefits		140.7		142.2
			Unrecognized tax benefits		45.2		159.7
			Other		146.3		160.2
				$	907.2	$	975.4
(a)	Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon. This has not been included in inventory as it is not held for sale.

Interest expense, net was comprised of the following in fiscal 2013, 2012 and 2011:

		Years ended May 31,
(in millions)		2013		2012		2011
Interest income	$	18.8	$	20.1	$	22.5
Less interest expense		-		1.4		27.6
Interest income (expense), net	$	18.8	$	18.7	$	(5.1)

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Investments in Non-Consolidated Companies - Investments Sold (Details 3) (USD $)	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011	May 31, 2011 Equity Method Investment Sold [Member]	Sep. 29, 2010 Equity Method Investment Sold [Member]
Long Lived Assets Held For Sale [Line Items]
Gross proceeds from sale of assets and investments					$ 1,000,000,000
Pre-tax gain on sale of assets and investments					685,600,000
Tax impact from sale of Fosfertil	$ 341,000,000	$ 711,400,000	$ 752,800,000	$ 116,200,000

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Pension Plans and Other Benefits - Plan Asset Allocations (Details)	12 Months Ended
	May 31, 2013	May 31, 2012
The pension plans benchmark of the return-seeking and fixed income strategies are currently comprised of the following and their respective weightings:
MSCI EAFE ND	14.00%
United States Pension Plans Of U S Entity Defined Benefit [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	100.00%	100.00%
Plan assets	100.00%	100.00%
United States Pension Plans Of U S Entity Defined Benefit [Member] | U S Equity Securities [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	12.00%	12.00%
Plan assets	13.00%	11.00%
United States Pension Plans Of U S Entity Defined Benefit [Member] | Non U S Equity Securities [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	7.00%	7.00%
Plan assets	7.00%	6.00%
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Real Estate Entities [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	3.00%	3.00%
Plan assets	4.00%	4.00%
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fixed Income Securities [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	75.00%	75.00%
Plan assets	74.00%	77.00%
Currently, our policy includes a 75% allocation to fixed income and 25% to return-seeking strategies.
Overall investment strategy- target allocation percentages	75.00%
The pension plans benchmark of the return-seeking and fixed income strategies are currently comprised of the following and their respective weightings:
Barclays Long Gov/Credit	19.00%
Barclays-Russell LDI	81.00%
United States Pension Plans Of U S Entity Defined Benefit [Member] | Private Equity Funds [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	3.00%	3.00%
Plan assets	1.00%	2.00%
United States Pension Plans Of U S Entity Defined Benefit [Member] | Return Seeking Investments [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	0.00%	0.00%
Plan assets	1.00%	0.00%
Currently, our policy includes a 75% allocation to fixed income and 25% to return-seeking strategies.
Overall investment strategy- target allocation percentages	25.00%
The pension plans benchmark of the return-seeking and fixed income strategies are currently comprised of the following and their respective weightings:
Russell 1000	23.00%
Russell 2500	8.00%
Russell 1000 Defensive	19.00%
MSCI EAFE Net	24.00%
MSCI EM Net	4.00%
NCREIF Open-End Diversified Core Equity Fund	16.00%
Private equity	6.00%
Foreign Pension Plans Defined Benefit [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	100.00%	100.00%
Plan assets	100.00%	100.00%
Foreign Pension Plans Defined Benefit [Member] | U S Equity Securities [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	23.00%	24.00%
Plan assets	21.00%	22.00%
Foreign Pension Plans Defined Benefit [Member] | Non U S Equity Securities [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	15.00%	15.00%
Plan assets	14.00%	14.00%
Foreign Pension Plans Defined Benefit [Member] | Fixed Income Securities [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	40.00%	30.00%
Plan assets	37.00%	38.00%
Foreign Pension Plans Defined Benefit [Member] | Private Equity Funds [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	0.00%	9.00%
Plan assets	2.00%	3.00%
Foreign Pension Plans Defined Benefit [Member] | Canadian Equity Securities [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	22.00%	22.00%
Plan assets	20.00%	21.00%
Foreign Pension Plans Defined Benefit [Member] | Return Seeking Investments [Member]
Our pension plan weighted-average asset allocations at May 31, 2013 and 2012 and the target by asset class are as follows:
Target allocation percentages	0.00%	0.00%
Plan assets	6.00%	2.00%
The pension plans benchmark of the return-seeking and fixed income strategies are currently comprised of the following and their respective weightings:
Russell 1000	22.00%
Private equity	4.00%
S&P/TSX 300	21.00%
DEX Bond Universe	39.00%

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Contingencies

12 Months Ended

May 31, 2013

Contingencies [Abstract]

Contingencies

21. CONTINGENCIES

We have described below judicial and administrative proceedings to which we are subject.

We have contingent environmental liabilities that arise principally from three sources: (i) facilities currently or formerly owned by our subsidiaries or their predecessors; (ii) facilities adjacent to currently or formerly owned facilities; and (iii) third-party Superfund or state equivalent sites. At facilities currently or formerly owned by our subsidiaries or their predecessors, the historical use and handling of regulated chemical substances, crop and animal nutrients and additives and by-product or process tailings have resulted in soil, surface water and/or groundwater contamination. Spills or other releases of regulated substances, subsidence from mining operations and other incidents arising out of operations, including accidents, have occurred previously at these facilities, and potentially could occur in the future, possibly requiring us to undertake or fund cleanup or result in monetary damage awards, fines, penalties, other liabilities, injunctions or other court or administrative rulings. In some instances, pursuant to consent orders or agreements with governmental agencies, we are undertaking certain remedial actions or investigations to determine whether remedial action may be required to address contamination. At other locations, we have entered into consent orders or agreements with appropriate governmental agencies to perform required remedial activities that will address identified site conditions. Taking into consideration established accruals of approximately $24.7 million and $27.3 million as of May 31, 2013 and 2012, respectively, expenditures for these known conditions currently are not expected, individually or in the aggregate, to have a material effect on our business or financial condition. However, material expenditures could be required in the future to remediate the contamination at known sites or at other current or former sites or as a result of other environmental, health and safety matters. Below is a discussion of the more significant environmental matters.

EPA RCRA Initiative. In 2003, the U.S. Environmental Protection Agency (“EPA”) Office of Enforcement and Compliance Assurance announced that it would be targeting facilities in mineral processing industries, including phosphoric acid producers, for a thorough review under the U.S. Resource Conservation and Recovery Act (“RCRA”) and related state laws. Mining and processing of phosphates generate residual materials that must be managed both during the operation of a facility and upon a facility's closure. Certain solid wastes generated by our phosphate operations may be subject to regulation under RCRA and related state laws. The EPA rules exempt “extraction” and “beneficiation” wastes, as well as 20 specified “mineral processing” wastes, from the hazardous waste management requirements of RCRA. Accordingly, certain of the residual materials which our phosphate operations generate, as well as process wastewater from phosphoric acid production, are exempt from RCRA regulation. However, the generation and management of other solid wastes from phosphate operations may be subject to hazardous waste regulation if the waste is deemed to exhibit a “hazardous waste characteristic.” As part of its initiative, we understand that EPA has inspected all or nearly all facilities in the U.S. phosphoric acid production sector to ensure compliance with applicable RCRA regulations and to address any “imminent and substantial endangerment” found by the EPA under RCRA. We have provided the EPA with substantial amounts of information regarding the process water recycling practices and the hazardous waste handling practices at our phosphate production facilities in Florida and Louisiana, and the EPA has inspected all of our currently operating processing facilities in the U.S. In addition to the EPA's inspections, our phosphates concentrates facilities have entered into consent orders to perform analyses of existing environmental data, to perform further environmental sampling as may be necessary, and to assess whether the facilities pose a risk of harm to human health or the surrounding environment.

We have received Notices of Violation (“NOVs”) from the EPA related to the handling of hazardous waste at our Riverview (September 2005), New Wales (October 2005), Mulberry (June 2006), Green Bay (August 2006) and Bartow (September 2006) facilities in Florida. The EPA has issued similar NOVs to our competitors and referred the NOVs to the U.S. Department of Justice (“DOJ”) for further enforcement. We currently are engaged in discussions with the DOJ and EPA. We believe we have substantial defenses to allegations in the NOVs, including but not limited to previous EPA regulatory interpretations and inspection reports finding that the process water handling practices in question comply with the requirements of the exemption for extraction and beneficiation wastes. We intend to evaluate various alternatives and continue discussions to determine if a negotiated resolution can be reached. If it cannot, we intend to vigorously defend these matters in any enforcement actions that may be pursued.

We are negotiating the terms of a possible settlement with the EPA, the DOJ, the Florida Department of Environmental Protection and the Louisiana Department of Environmental Quality (collectively, the “Government”) and the final terms are not yet agreed upon or approved. If a settlement can be achieved, in all likelihood our commitments would be multi-faceted with key elements including, in general and among other elements, the following:

• Incurring capital expenditures likely to exceed $150 million in the aggregate over a period of several years.
• Providing meaningful additional financial assurance for the estimated costs of closure and post-closure care of our Gypstacks (“Gypstack Closure Costs”). For financial reporting purposes, we recognize our estimated asset retirement obligations (“AROs”), including Gypstack Closure Costs, at their present value. This present value determined for financial reporting purposes is reflected on our Consolidated Balance Sheets in accrued liabilities and other noncurrent liabilities. As ofMay 31, 2013, the undiscounted amount of our AROs, determined using the assumptions used for financial reporting purposes, was approximately $1.5billionand the present value of our Gypstack Closure Costs reflected in our Consolidated Balance Sheet was approximately $450 million. Currently, financial assurance requirements in Florida and Louisiana for Gypstack Closure Costs can be satisfied through a variety of methods, including satisfaction of financial tests. In the context of a potential settlement of the Government's enforcement action, we expect that we would agree to pre-fund a material portion of our Gypstack Closure Costs, primarily by depositing cash, currently estimated to be in the amount of approximately $625 million, into a trust fund which would increase over time with reinvestment of earnings. Amounts held in any such trust fund (including reinvested earnings) would be classified as restricted cash on our Consolidated Balance Sheets. We expect that any final settlement of this matter would resolve all of our financial assurance obligations to the Government for Gypstack Closure Costs. Our actual Gypstack Closure Costs are generally expected to be paid by us in the normal course of our Phosphates business over a period that may not end until three decades or more after a Gypstack has been closed.
• We have also established accruals to address the estimated cost of civil penalties in connection with this matter, which we do not believe, in light of the relevant regulatory history, would be material to our results of operations, liquidity or capital resources.

In light of our strong operating cash flows, liquidity and capital resources, we believe that we have sufficient liquidity and capital resources to be able to fund such capital expenditures, financial assurance requirements and civil penalties as part of a settlement. If a settlement cannot be agreed upon, we cannot predict the outcome of any litigation or estimate the potential amount or range of loss; however, we would face potential exposure to material costs should we fail in the defense of an enforcement action.

EPA EPCRA Initiative. In July 2008, the DOJ sent a letter to major U.S. phosphoric acid manufacturers, including us, stating that the EPA's ongoing investigation indicates apparent violations of Section 313 of the Emergency Planning and Community Right-to-Know Act (“EPCRA”) at their phosphoric acid manufacturing facilities. Section 313 of EPCRA requires annual reports to be submitted with respect to the use or presence of certain toxic chemicals. DOJ and EPA also stated that they believe that a number of these facilities have violated Section 304 of EPCRA and Section 103 of the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”) by failing to provide required notifications relating to the release of hydrogen fluoride from the facilities. The letter did not identify any specific violations by us or assert a demand for penalties against us. We cannot predict at this time whether the EPA and DOJ will initiate an enforcement action over this matter, what its scope would be, or what the range of outcomes of such a potential enforcement action might be.

Florida Sulfuric Acid Plants. On April 8, 2010, the EPA Region 4 submitted an administrative subpoena to us under Section 114 of the Federal Clean Air Act (the “CAA”) regarding compliance of our Florida sulfuric acid plants with the “New Source Review” requirements of the CAA. The request received by Mosaic appears to be part of a broader EPA national enforcement initiative focusing on sulfuric acid plants. We cannot predict at this time whether the EPA and DOJ will initiate an enforcement action over this matter, what its scope would be, or what the range of outcomes of such a potential enforcement action might be.

Other Environmental Matters. Superfund and equivalent state statutes impose liability without regard to fault or to the legality of a party's conduct on certain categories of persons who are considered to have contributed to the release of “hazardous substances” into the environment. Under Superfund, or its various state analogues, one party may, under certain circumstances, be required to bear more than its proportionate share of cleanup costs at a site where it has liability if payments cannot be obtained from other responsible parties. Currently, certain of our subsidiaries are involved or concluding involvement at several Superfund or equivalent state sites. Our remedial liability from these sites, alone or in the aggregate, currently is not expected to have a material effect on our business or financial condition. As more information is obtained regarding these sites and the potentially responsible parties involved, this expectation could change.

We believe that, pursuant to several indemnification agreements, our subsidiaries are entitled to at least partial, and in many instances complete, indemnification for the costs that may be expended by us or our subsidiaries to remedy environmental issues at certain facilities. These agreements address issues that resulted from activities occurring prior to our acquisition of facilities or businesses from parties including, but not limited to, ARCO (BP); Beatrice Fund for Environmental Liabilities; Conoco; Conserv; Estech, Inc.; Kaiser Aluminum & Chemical Corporation; Kerr-McGee Inc.; PPG Industries, Inc.; The Williams Companies and certain other private parties. Our subsidiaries have already received and anticipate receiving amounts pursuant to the indemnification agreements for certain of their expenses incurred to date as well as future anticipated expenditures. Potential indemnification is not considered in our established accruals.

Phosphate Mine Permitting in Florida

Denial of the permits sought at any of our mines, issuance of the permits with cost-prohibitive conditions, or substantial delays in issuing the permits, legal actions that prevent us from relying on permits or revocation of permits may create challenges for us to mine the phosphate rock required to operate our Florida and Louisiana phosphate plants at desired levels or increase our costs in the future.

The Altman Extension of the Four Corners Mine. The Army Corps of Engineers (the “Corps”) issued a federal wetlands permit under the Clean Water Act (the “CWA”) for mining the Altman Extension (the “Altman Extension”) of our Four Corners phosphate rock mine in central Florida in May 2008. The Sierra Club, Inc. (the “Sierra Club”), Manasota-88, Inc. (“Manasota-88”), Gulf Restoration Network, Inc., People for Protecting Peace River, Inc. (“People for Protecting Peace River”) and the Environmental Confederation of Southwest Florida, Inc. sued the Corps in the United States District Court for the Middle District of Florida, Jacksonville Division (the “Jacksonville District Court”), seeking to vacate our permit to mine the Altman Extension (the “Altman Extension Permit Litigation”). Mining on the Altman Extension commenced and approximately 600 acres of the Altman Extension were mined and/or disturbed. The remaining approximately 1,200 acres of the Altman extension of our Four Corners mine are not currently in our near term mining plan. In a June 26, 2012 order, the Jacksonville District Court declared the parties' pending motions for summary judgment moot and requested rebriefing by all parties. The plaintiffs have filed a new motion for summary judgment, and we and the Corps have filedour respective responses and cross-motions for summary judgment. We believe that the permit was issued in accordance with all applicable requirements and that it will ultimately be upheld.

Central Florida Phosphate District Area-Wide Environmental Impact Statement.In fiscal 2011, the Corps notified us that it planned to conduct an area-wide environmental impact statement (“AEIS”) for the central Florida phosphate district. On June 1, 2012, the Corps published notice of availability of the draft AEIS in the Federal Register and announced that it would accept public comment on the draft AEIS through July 31, 2012. We, along with other members of the public, submitted comments for the Corps to consider as it completed the final AEIS. The Corps issued the final AEIS on April 25, 2013. The final AEIS includes information on environmental impacts upon which the Corps will rely in its consideration of our pending federal wetlands permits for our future Ona and DeSoto mines and an extension of our Wingate mine. The Corps has announced that it will issue an addendum to the AEIS to provide a Spanish language version of the Executive Summary section of the final AEIS and to address several minor technical questions raised by commenters.We do not expect that issuance of the addendum will delay our development of permit applications.

Potash Antitrust Litigation

On September 11, 2008, separate complaints (together, the “September 11, 2008 Cases”) were filed in the United States District Courts for the District of Minnesota (the “Minn-Chem Case”) and the Northern District of Illinois (the “Gage's Fertilizer Case”), on October 2, 2008 another complaint (the “October 2, 2008 Case”) was filed in the United States District Court for the Northern District of Illinois, and on November 10, 2008 and November 12, 2008, two additional complaints (together, the “November 2008 Cases” and collectively with the September 11, 2008 Cases and the October 2, 2008 Case, the “Direct Purchaser Cases”) were filed in the United States District Court for the Northern District of Illinois (the “Northern Illinois District Court”) by Minn-Chem, Inc., Gage's Fertilizer & Grain, Inc., Kraft Chemical Company, Westside Forestry Services, Inc. d/b/a Signature Lawn Care, and Shannon D. Flinn, respectively, against The Mosaic Company, Mosaic Crop Nutrition, LLC and a number of unrelated defendants that allegedly sold and distributed potash throughout the United States. On November 13, 2008, the plaintiffs in the cases in the United States District Court for the Northern District of Illinois filed a consolidated class action complaint against the defendants, and on December 2, 2008 the Minn-Chem Case was consolidated with the Gage's Fertilizer Case. On April 3, 2009, an amended consolidated class action complaint was filed on behalf of the plaintiffs in the Direct Purchaser Cases. The amended consolidated complaint added Thomasville Feed and Seed, Inc. as a named plaintiff, and was filed on behalf of the named plaintiffs and a purported class of all persons who purchased potash in the United States directly from the defendants during the period July 1, 2003 through the date of the amended consolidated complaint (“Class Period”). The amended consolidated complaint generally alleged, among other matters, that the defendants: conspired to fix, raise, maintain and stabilize the price at which potash was sold in the United States; exchanged information about prices, capacity, sales volume and demand; allocated market shares, customers and volumes to be sold; coordinated on output, including the limitation of production; and fraudulently concealed their anticompetitive conduct. The plaintiffs in the Direct Purchaser Cases generally sought injunctive relief and to recover unspecified amounts of damages, including treble damages, arising from defendants' alleged combination or conspiracy to unreasonably restrain trade and commerce in violation of Section 1 of the Sherman Act. The plaintiffs also sought costs of suit, reasonable attorneys' fees and pre-judgment and post-judgment interest.

On September 15, 2008, separate complaints were filed in the United States District Court for the Northern District of Illinois by Gordon Tillman (the “Tillman Case”); Feyh Farm Co. and William H. Coaker Jr. (the “Feyh Farm Case”); and Kevin Gillespie (the “Gillespie Case;” the Tillman Case and the Feyh Farm Case together with the Gillespie case being collectively referred to as the “Indirect Purchaser Cases;” and the Direct Purchaser Cases together with the Indirect Purchaser Cases being collectively referred to as the “Potash Antitrust Cases”). The defendants in the Indirect Purchaser Cases were generally the same as those in the Direct Purchaser Cases. On November 13, 2008, the initial plaintiffs in the Indirect Purchaser Cases and David Baier, an additional named plaintiff, filed a consolidated class action complaint. On April 3, 2009, an amended consolidated class action complaint was filed on behalf of the plaintiffs in the Indirect Purchaser Cases. The factual allegations in the amended consolidated complaint were substantially identical to those summarized above with respect to the Direct Purchaser Cases. The amended consolidated complaint in the Indirect Purchaser Cases was filed on behalf of the named plaintiffs and a purported class of all persons who indirectly purchased potash products for end use during the Class Period in the United States, any of 20 specified states and the District of Columbia defined in the consolidated complaint as “Indirect Purchaser States,” any of 22 specified states and the District of Columbia defined in the consolidated complaint as “Consumer Fraud States”, and/or 48 states and the District of Columbia and Puerto Rico defined in the consolidated complaint as “Unjust Enrichment States.” The plaintiffs generally sought injunctive relief and to recover unspecified amounts of damages, including treble damages for violations of the antitrust laws of the Indirect Purchaser States where allowed by law, arising from defendants' alleged continuing agreement, understanding, contract, combination and conspiracy in restraint of trade and commerce in violation of Section 1 of the Sherman Act, Section 16 of the Clayton Act, the antitrust, or unfair competition laws of the Indirect Purchaser States and the consumer protection and unfair competition laws of the Consumer Fraud States, as well as restitution or disgorgement of profits, for unjust enrichment under the common law of the Unjust Enrichment States, and any penalties, punitive or exemplary damages and/or full consideration where permitted by applicable state law. The plaintiffs also sought costs of suit and reasonable attorneys' fees where allowed by law and pre-judgment and post-judgment interest.

On June 15, 2009, we and the other defendants filed motions to dismiss the complaints in the Potash Antitrust Cases. On November 3, 2009, the court granted our motions to dismiss the complaints in the Indirect Purchaser Cases except (a) for plaintiffs residing in Michigan and Kansas, claims for alleged violations of the antitrust or unfair competition laws of Michigan and Kansas, respectively, and (b) for plaintiffs residing in Iowa, claims for alleged unjust enrichment under Iowa common law. The court denied our and the other defendants' other motions to dismiss the Potash Antitrust Cases, including the defendants' motions to dismiss the claims under Section 1 of the Sherman Act for failure to plead evidentiary facts which, if true, would state a claim for relief under that section. The court, however, stated that it recognized that the facts of the Potash Antitrust Cases present a difficult question under the pleading standards enunciated by the U.S. Supreme Court for claims under Section 1 of the Sherman Act, and that it would consider, if requested by the defendants, certifying the issue for interlocutory appeal. On January 13, 2010, at the request of the defendants, the court issued an order certifying for interlocutory appeal the issues of (i) whether an international antitrust complaint states a plausible cause of action where it alleges parallel market behavior and opportunities to conspire; and (ii) whether a defendant that sold product in the United States with a price that was allegedly artificially inflated through anti-competitive activity involving foreign markets, engaged in 'conduct involving import trade or import commerce' under applicable law. On September 23, 2011, the United States Court of Appeals for the Seventh Circuit (the “Seventh Circuit”) vacated the district court's order denying the defendants' motion to dismiss and remanded the case to the district court with instructions to dismiss the plaintiffs' Sherman Act claims. On December 2, 2011, the Seventh Circuit vacated its September 23, 2011 order and on June 27, 2012, the Seventh Circuit affirmed the order of the Northern Illinois District Court to deny the defendants' motion to dismiss the plaintiffs' claims. The decision was not a ruling on the merits of the case, but the Seventh Circuit's decision allowed pretrial discovery to proceed in this matter, and the Northern Illinois District Court scheduled trial to begin February 10, 2014. We sought U.S. Supreme Court review of the Seventh Circuit's decision.

On January 30, 2013, we entered into agreements to settle the Potash Antitrust Cases for an aggregate of $43.8 million. We chose to settle the Potash Antitrust Cases to avoid the significant costs, burden and distraction of protracted litigation and we did not admit any wrongdoing. Following preliminary approval by the Northern Illinois District Court on January 30, 2013, we funded the settlement subject to final court approval. On June 12, 2013, the Northern Illinois District Court entered an order of final approval of the settlement.The majority of the settlement was recorded in the third quarter of fiscal year 2013.

MicroEssentials® Patent Lawsuit

On January 9, 2009, John Sanders and Specialty Fertilizer Products, LLC filed a complaint against Mosaic, Mosaic Fertilizer, LLC, Cargill, Incorporated and Cargill Fertilizer, Inc. in the United States District Court for the Western District of Missouri (the “Missouri District Court”). The complaint alleges that our production of MicroEssentials® SZ, one of several types of the MicroEssentials® value-added ammoniated phosphate crop nutrient products that we produce, infringes on a patent held by the plaintiffs since 2001. Plaintiffs have since asserted that other MicroEssentials® products also infringe the patent. Plaintiffs seek to enjoin the alleged infringement and to recover an unspecified amount of damages and attorneys' fees for past infringement. Our answer to the complaint responds that the plaintiffs' patent is invalid and we have counterclaimed that the plaintiffs have engaged in inequitable conduct.

The Missouri District Court stayed the lawsuit pending an ex parte reexamination of plaintiffs' patent claims by the U.S. Patent and Trademark Office (the “PTO”).  On September 12, 2012, Shell Oil Company (“Shell”) filed an inter parties reexamination request which in part asserted that the claims as amended and added in connection with the ex parte reexamination are unpatentable.  On October 4, 2012, the PTO issued an Ex Parte Reexamination Certificate in which certain claims of the plaintiffs' patent were cancelled, disclaimed and amended, and new claims were added.  Plaintiffs have filed a motion with the Missouri District Court requesting that the stay of the lawsuit be lifted, and we have opposed that motion. On November 28, 2012, the PTO granted Shell's request for an interparties reexamination. On December 11, 2012, as part of that reexamination, the PTO issued an initial rejection of all of plaintiffs' remaining patent claims. Final rejection by the PTO or further amendment by the plaintiffs of all or part of the remaining patent claims as part of the reexamination could limit the claims the plaintiffs can assert against us or their remedies against us.

We believe that the plaintiffs' allegations are without merit and intend to defend vigorously against them. At this stage of the proceedings, we cannot predict the outcome of this litigation, estimate the potential amount or range of loss or determine whether it will have a material effect on our results of operations, liquidity or capital resources.

Tax Contingencies

Our Brazilian subsidiary is engaged in a number of judicial and administrative proceedings relating to various non-income tax matters. We estimate that our maximum potential liability with respect to these matters is approximately $97 million. Approximately $55 million of the maximum potential liability relates to PIS and Cofins tax credit cases while the majority of the remaining amount relates to various other non-income tax cases such as value added taxes. In the event that the Brazilian government was to prevail in connection with all judicial and administrative matters involving us and considering the amount of judicial deposits made, our maximum cash tax liability with respect to these matters would be approximately $96 million. Based on the current status of similar tax cases involving unrelated taxpayers, we believe we have recorded adequate accruals, which are immaterial, for the probable liability with respect to these Brazilian judicial and administrative proceedings.

Other Claims

We also have certain other contingent liabilities with respect to judicial, administrative and arbitration proceedings and claims of third parties, including tax matters, arising in the ordinary course of business. We do not believe that any of these contingent liabilities will have a material adverse impact on our business or financial condition, results of operations, and cash flows.

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Variable Interest Entities (Tables)

12 Months Ended

May 31, 2013

Variable Interest Entities [Abstract]

Schedule of variable interest entities

The carrying amounts and classification of assets and liabilities included in our Consolidated Balance Sheets for these consolidated entities are as follows:

			May 31,		May 31,
(in millions)			2013		2012
	Current assets	$	180.7	$	138.6
	Non current assets		46.9		49.4
	Total assets	$	227.6	$	188.0
	Current liabilities	$	5.4	$	39.6
	Non current liabilities		-		-
	Total liabilities	$	5.4	$	39.6

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Business Segments (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	$ 9,974.1	$ 11,107.8	$ 9,937.8
Goodwill	1,844.6	1,844.4	1,829.8
Deferred income taxes noncurrent	212.7	50.6
India [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	475.2	1,579.7	1,565.9
Brazil [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	2,069.3	2,161.6	1,810.1
Long-lived assets	178.1	158.6
Canpotex [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	1,239.8	1,298.9	992.9
Canada [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	686.3	786.3	629.9
Long-lived assets	5,264.8	4,593.2
China [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	173.3	160.4	115.9
Australia [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	177.5	290.1	237.8
Argentina [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	258.3	266.7	233.3
Thailand [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	88.9	94.0	91.1
Mexico [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	128.9	90.5	101.7
Chile [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	116.5	121.1	115.9
Peru [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	56.9	95.1	6.6
Colombia [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	143.5	155.9	157.6
Japan [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	188.2	177.5	166.1
Other foreign [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	271.7	209.3	193.7
Long-lived assets	52.1	60.5
Total foreign [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	6,074.3	7,487.1	6,418.5
Long-lived assets	5,495.0	4,812.3
United States [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	3,899.8	3,620.7	3,519.3
Long-lived assets	3,653.2	3,402.0
Consolidated [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Long-lived assets	$ 9,148.2	$ 8,214.3

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Earnings Per Share

12 Months Ended

May 31, 2013

Earnings Per Share [Abstract]

Earnings per share

7. EARNINGS PER SHARE

The numerator for diluted earnings per share (“EPS”) is net earnings. The denominator for basic EPS is the weighted-average number of shares outstanding during the period. The denominator for diluted EPS also includes the weighted average number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued unless the shares are anti-dilutive.

The following is a reconciliation of the numerator and denominator for the basic and diluted EPS computations:

		Years ended May 31,
(in millions)		2013		2012		2011
Net earnings attributable to Mosaic	$	1,888.7	$	1,930.2	$	2,514.6
Basic weighted average common shares outstanding		425.7		435.2		446.0
Dilutive impact of share-based awards		1.2		1.3		1.5
Diluted weighted average common shares outstanding		426.9		436.5		447.5
Basic net earnings per share attributable to Mosaic	$	4.44	$	4.44	$	5.64
Diluted net earnings per share attributable to Mosaic	$	4.42	$	4.42	$	5.62

A total of 0.6million shares, 0.5 million shares and 0.4 million sharesof common stock subject to issuance upon exercise of stock optionsfor fiscal 2013, 2012 and 2011, respectively, have been excluded from the calculation of diluted EPS because the effect would be anti-dilutive.

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Pension Plans and Other Benefits - Plan Asset Fair Values (Details) (Fixed Income Securities [Member])	12 Months Ended
	May 31, 2013
United States Pension Plans Of U S Entity Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
U.S. federal government debt securities - percentage	17.00%
Other governmental securities - percentage	10.00%
Debt securities issued by entities foreign to USA - percentage	5.00%
US corporate debt securities - percentage	68.00%
Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Canadian federal government debt securities - percentage	38.00%
Canadian provincial government securities - percentage	16.00%
Canadian corporate debt securities - percentage	28.00%
Debt securities issued by entities foreign to Canada - percentage	15.00%
Other - percentage	3.00%

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Income Taxes Carryforwards (Details 5) (USD $)	12 Months Ended
	May 31, 2013
Alternative Minimum Tax Credit Carryforward [Member]
Tax Carryforward [Line Items]
Tax Credit Carryforward, Amount	$ 63,100,000
Net Operating Loss Carryforward [Member]
Tax Carryforward [Line Items]
Operating Loss Carryforwards	457,700,000
Operating Loss Carryforwards, Expiration Dates	majority of our net operating loss carryforwards relate to Brazil and can be carried forward indefinitely
Operating Loss Carryforwards, Limitations on Use	limited to 30 percent of taxable income each year
Capital Loss Carryforward [Member]
Tax Carryforward [Line Items]
Capital Loss Carryforwards	18,900,000
Foreign Tax Credit Carryforward [Member]
Tax Carryforward [Line Items]
Tax Credit Carryforward, Amount	528,000,000
Tax Credit Carryforward, Limitations on Use	We will need certain types of taxable income totaling approximately $4 billion in the U.S.
Future taxable income needed to fully utilize carryforwards	$ 4,000,000,000

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Summary of Significant Accounting Policies

12 Months Ended

May 31, 2013

Summary Of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies

3. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Statement Presentation and Basis of Consolidation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Throughout the Notes to Consolidated Financial Statements, amounts in tables are in millions of dollars except for per share data and as otherwise designated. References in this report to a particular fiscal year are to the twelve months ended May 31 of that year.

The accompanying Consolidated Financial Statements include the accounts of Mosaic and its majority owned subsidiaries, as well as the accounts of certain variable interest entities (“VIEs”) for which we are the primary beneficiary as described in Note 12. Certain investments in companies where we do not have control but have the ability to exercise significant influence are accounted for by the equity method.

Accounting Estimates

Preparation of the Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The more significant estimates made by management relate to the recoverability of non-current assets including goodwill, the useful lives and net realizable values of long-lived assets, environmental and reclamation liabilities including asset retirement obligations (“AROs”), the costs of our employee benefit obligations for pension plans and postretirement benefits, income tax related accounts including the valuation allowance against deferred income tax assets, Canadian resource tax and royalties, inventory valuation and accruals for pending legal and environmental matters. Actual results could differ from these estimates.

Revenue Recognition

Revenue on North American sales is recognized when the product is delivered to the customer and/or when the risks and rewards of ownership are otherwise transferred to the customer and when the price is fixed or determinable. Revenue on North American export sales is recognized upon the transfer of title to the customer and when the other revenue recognition criteria have been met, which generally occurs when product enters international waters. Revenue from sales originating outside of North America is recognized upon transfer of title to the customer based on contractual terms of each arrangement and when the other revenue recognition criteria have been met. Shipping and handling costs are included as a component of cost of goods sold.

Income Taxes

In preparing our Consolidated Financial Statements, we utilize the asset and liability approach in accounting for income taxes. We recognize income taxes in each of the jurisdictions in which we have a presence. For each jurisdiction, we estimate the actual amount of income taxes currently payable or receivable, as well as deferred income tax assets and liabilities attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

A valuation allowance is provided for those deferred tax assets for which it is more likely than not that the related tax benefits will not be realized. We evaluate our ability to realize the tax benefits associated with deferred tax assets by analyzing the relative impact of all the available positive and negative evidence regarding our forecasted taxable income using both historical and projected future operating results, the reversal of existing taxable temporary differences, taxable income in prior carry-back years (if permitted) and the availability of tax planning strategies. A valuation allowance will be recorded in each jurisdiction in which a deferred income tax asset is recorded when it is more likely than not that the deferred income tax asset will not be realized. Changes in deferred tax asset valuation allowances typically impact income tax expense.

We recognize excess tax benefits or shortfalls associated with share-based compensation in equity only when realized. When assessing whether excess tax benefits or shortfalls relating to share-based compensation have been realized, we follow the with-and-without approach excluding any indirect effects of the excess tax effects. Under this approach, excess tax benefits or shortfallsrelated to share-based compensation are generally not deemed to be realized until after the utilization of all other applicable tax benefits or shortfalls available to us.

Accounting for uncertain income tax positions is determined by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. This minimum threshold is that a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit to be recognized is measured as the largest amount of benefit that is greater than a fifty percent likelihood of being realized upon ultimate settlement. We recognize interest and penalties within our provision for income taxes on our Consolidated Statements of Earnings.

We have not recorded U.S. deferred income taxes on certain of our non-U.S. subsidiaries' undistributed earnings as such amounts are intended to be reinvested outside of the United States indefinitely. However, should we change our business and tax strategies in the future and decide to repatriate a portion of these earnings to one of our U.S. subsidiaries, including cash maintained by these non-U.S. subsidiaries, additional tax liabilities would be incurred. It is not practical to estimate the amount of additional U.S. tax liabilities we would incur.

Canadian Resource Taxes and Royalties

We pay Canadian resource taxes consisting of the Potash Production Tax and resource surcharge. The Potash Production Tax is a Saskatchewan provincial tax on potash production and consists of a base payment and a profits tax. The profits tax is calculated on the potash content of each tonne sold from each Saskatchewan mine, net of certain operating expenses and a depreciation allowance. We also pay a percentage of the value of resource sales from our Saskatchewan mines. In addition to the Canadian resource taxes, royalties are payable to the mineral owners with respect to potash reserves or production of potash. These resource taxes and royalties are recorded in our cost of goods sold. Our Canadian resource tax and royalty expenses were $307.9 million, $327.1 million and $294.2 million for fiscal 2013, 2012 and 2011, respectively.

Brazil Non-Income Taxes

We have approximately $80 million of assets recorded at May 31, 2013 related to PIS and Cofins, a value added tax,tax credits and income tax credits mostly earned in 2009 through 2013 that we believe will be realized through paying income taxes, paying other federal taxes, or receiving cash refunds. Should the Brazilian government determine these claims to not be warranted upon review, this could impact our results in such period. We presently believe that our positions are supported.

Foreign Currency Translation

The Company's reporting currency is the U.S. dollar; however, for operations located in Canada and Brazil, the functional currency is the local currency. Assets and liabilities of these foreign operations are translated to U.S. dollars at exchange rates in effect at the balance sheet date, while income statement accounts and cash flows are translated to U.S. dollars at the average exchange rates for the period. For these operations, translation gains and losses are recorded as a component of accumulated other comprehensive income in equity until the foreign entity is sold or liquidated. Transaction gains and losses result from transactions that are denominated in a currency other than the functional currency of the operation, primarily accounts receivable in our Canadian entities denominated in U.S. dollars, and accounts payable in Brazil denominated in U.S. dollars. These foreign currency transaction gains and losses are presented separately in the Consolidated Statement of Earnings.

Cash and Cash Equivalents

Cash and cash equivalents include short-term, highly liquid investments with original maturities of 90 days or less, and other highly liquid investments that are payable on demand such as money market accounts, certain certificates of deposit and repurchase agreements. The carrying amount of such cash equivalents approximates their fair value due to the short-term and highly liquid nature of these instruments.

Concentration of Credit Risk

In the U.S., we sell our products to manufacturers, distributors and retailers primarily in the Midwest and Southeast. Internationally, our phosphate and potash products are sold primarily through two North American export associations. A concentration of credit risk arises from our sales and accounts receivable associated with the international sales of potash product through Canpotex. We consider our concentration risk related to the Canpotex receivable to be mitigated by their credit policy which requires the underlying receivables to be substantially insured or secured by letters of credit. As of May 31, 2013 and 2012, $191.8 million and $200.7 million, respectively, of accounts receivable were due from Canpotex. In fiscal 2013, 2012 and 2011, sales to Canpotex were $1.2billion, $1.3 billion and$992.9 million, respectively.

Receivables and Allowance for Doubtful Accounts

Accounts receivable are recorded at face amount less an allowance for doubtful accounts. On a regular basis, we evaluate outstanding accounts receivable and establish the allowance for doubtful accounts based on a combination of specific customer circumstances as well as credit conditions and a history of write-offs and subsequent collections.

Included in other assets are long-term accounts receivable of $13.9million and $16.9 million as of May 31, 2013 and 2012, respectively. In accordance with our allowance for doubtful accounts policy, we have recorded allowances against these long-term accounts receivable of $11.3 million and $13.5 million, respectively.

Inventories

Inventories of raw materials, work-in-process products, finished goods and operating materials and supplies are stated at the lower of cost or market. Costs for substantially all inventories are determined using the weighted average cost basis.

Market value of our inventory is defined as forecasted selling prices less reasonably predictable selling costs (net realizable value). Significant management judgment is involved in estimating forecasted selling prices including various demand and supply variables. Examples of demand variables include grain and oilseed prices, stock-to-use ratios and changes in inventories in the crop nutrients distribution channels. Examples of supply variables include forecasted prices of raw materials, such as phosphate rock, sulfur, ammonia, and natural gas, estimated operating rates and industry crop nutrient inventory levels. Results could differ materially if actual selling prices differ materially from forecasted selling prices. Charges for lower of cost or market are recognized in our Consolidated Statements of Earnings in the period when there is evidence of a decline of market value below cost.

To determine the cost of inventory, we allocate fixed expense to the costs of production based on the normal capacity, which refers to a range of production levels and is considered the production expected to be achieved over a number of periods or seasons under normal circumstances, taking into account the loss of capacity resulting from planned maintenance. Fixed overhead costs allocated to each unit of production should not increase due to abnormally low production. Those excess costs are recognized as a current period expense. When a production facility is completely shut down temporarily, it is considered “idle”, and all related expenses are charged to cost of goods sold.

Property, Plant and Equipment

Property, plant and equipment are stated at cost. Costs of significant assets include capitalized interest incurred during the construction and development period. Repairs and maintenance, including planned major maintenance and plan turnaround costs, are expensed when incurred.

Depletion expenses for mining operations, including mineral reserves, are generally determined using the units-of-production method based on estimates of recoverable reserves. Depreciation is computed principally using the straight-line method over the following useful lives: machinery and equipment three to 25 years, and buildings and leasehold improvements three to 40 years.

We estimate initial useful lives based on experience and current technology. These estimates may be extended through sustaining capital programs. Factors affecting the fair value of our assets may also affect the estimated useful lives of our assets and these factors can change. Therefore, we periodically review the estimated remaining lives of our facilities and other significant assets and adjust our depreciation rates prospectively where appropriate.

Leases

Leases in which the risk of ownership is retained by the lessor are classified as operating leases. Leases which substantially transfer all of the benefits and risks inherent in ownership to the lessee are classified as capital leases. Assets acquired under capital leases are depreciated on the same basis as property, plant and equipment. Rental payments are expensed on a straight-line basis. Leasehold improvements are depreciated over the depreciable lives of the corresponding fixed assets or the related lease term, whichever is shorter.

Investments

Except as discussed in Note 12of our Notes to Consolidated Financial Statements, with respect to variable interest entities, investments in the common stock of affiliated companies in which our ownership interest is 50% or less and in which we exercise significant influence over operating and financial policies are accounted for using the equity method which includes eliminating the effects of any material intercompany transactions. The cash flow presentation of dividends received from equity method investees is determined by evaluation of the facts, circumstances and nature of the distribution.

Recoverability of Long-Lived Assets

Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. The carrying amount of a long-lived asset group is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset group. If it is determined that an impairment loss has occurred, the loss is measured as the amount by which the carrying amount of the long-lived asset group exceeds its fair value.

Goodwill

Goodwill is carried at cost, not amortized, and represents the excess of the purchase price and related costs over the fair value assigned to the net identifiable assets of a business acquired. We test goodwill for impairment at the reporting unit level on an annual basis or upon the occurrence of events that may indicate possible impairment. When testing goodwill for impairment, the Company may first assess qualitative factors. If an initial qualitative assessment identifies that it is more likely than not that the carrying value of a reporting unit exceeds its estimated fair value, additional quantitative testing is performed in two phases. The first step compares the fair value of the reporting unit with its carrying amount, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. However, if the carrying amount of the reporting unit exceeds its fair value, the implied fair value of the reporting unit's goodwill would be compared with the carrying amount of that goodwill. An impairment loss would be recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. The Company may also elect not to perform the qualitative assessment and proceed directly to the quantitative testing. We have established the second quarter of our fiscal year as the period for our annual test for impairment of goodwill and the test resulted in no impairment in the periods presented.

Environmental Costs

Accruals for estimated costs are recorded when environmental remediation efforts are probable and the costs can be reasonably estimated. In determining these accruals, we use the most current information available, including similar past experiences, available technology, consultant evaluations, regulations in effect, the timing of remediation and cost-sharing arrangements.

Asset Retirement Obligations

We recognize AROs in the period in which we have an existing legal obligation associated with the retirement of a tangible long-lived asset, and the amount of the liability can be reasonably estimated. The ARO is recognized at fair value when the liability is incurred. Upon initial recognition of a liability, that cost is capitalized as part of the related long-lived asset and depreciated on a straight-line basis over the remaining estimated useful life of the related asset. The liability is adjusted in subsequent periods through accretion expense which represents the increase in the present value of the liability due to the passage of time. Such depreciation and accretion expenses are included in cost of goods sold for operating facilities and other operating expense for indefinitely closed facilities.

Litigation

We are involved from time to time in claims and legal actions incidental to our operations, both as plaintiff and defendant. We have established what we currently believe to be adequate accruals for pending legal matters. These accruals are established as part of an ongoing worldwide assessment of claims and legal actions that takes into consideration such items as advice of legal counsel, individual developments in court proceedings, changes in the law, changes in business focus, changes in the litigation environment, changes in opponent strategy and tactics, new developments as a result of ongoing discovery, and past experience in defending and settling similar claims. The litigation accruals at any time reflect updated assessments of the then-existing claims and legal actions. The final outcome or potential settlement of litigation matters could differ materially from the accruals which we have established. For significant individual cases, we accrue legal costs expected to be incurred.

Pension and Other Postretirement Benefits

Mosaic offers a number of benefit plans that provide pension and other benefits to qualified employees. These plans include defined benefit pension plans, supplemental pension plans, defined contribution plans and other postretirement benefit plans.

We accrue the funded status of our plans, which is representative of our obligations under employee benefit plans and the related costs, net of plan assets measured at fair value. The cost of pensions and other retirement benefits earned by employees is generally determined with the assistance of an actuary using the projected benefit method prorated on service and management's best estimate of expected plan investment performance, salary escalation, retirement ages of employees and expected healthcare costs.

Share-Based Compensation

We measure the cost of employees' services received in exchange for an award of equity instruments based on grant-date fair value of the award, and recognize the cost over the period during which the employee is required to provide service in exchange for the award. Our granted awards consist of stock options that generally vest annually in equal amounts over a three-year period and have an exercise price equal to the fair market value of our common stock on the date of grant, restricted stock units that generally cliff vest after three years and have a fair value equal to the market price of our stock at the date of grant and performance units that vest after a three-year period and are recorded at their fair value at the grant date. We recognize compensation expense for awards on a straight-line basis over the requisite service period.

Derivative Activities

We periodically enter into derivatives to mitigate our exposure to foreign currency risks and the effects of changing commodity and freight prices. We record all derivatives on the Consolidated Balance Sheets at fair value. The fair value of these instruments is determined by using quoted market prices, third party comparables, or internal estimates. We net our derivative asset and liability positions when we have a master netting arrangement in place. Changes in the fair value of the foreign currency, commodity, and freight derivatives are immediately recognized in earnings because we do not apply hedge accounting treatment to these instruments.

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Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Cash Flows from Operating Activities
Net earnings including noncontrolling interests	$ 1,891.8	$ 1,930.8	$ 2,513.5
Depreciation, depletion and amortization	604.8	508.1	447.4
Lower of cost or market write-down	0	0	0
Deferred income taxes	200.0	245.8	196.6
Equity in net loss (earnings) of nonconsolidated companies, net of dividends	32.2	(3.7)	8.2
Accretion expense for asset retirement obligations	33.3	32.4	31.6
Stock-based compensation expense	28.2	23.4	21.1
Unrealized loss (gain) on derivatives	(1.4)	45.9	(21.0)
Gain on sale of equity investment	0	0	(685.6)
Excess tax benefit related to stock option exercises	0	0	(13.4)
(Gain) loss on sale of fixed assets	18.1	23.1	30.3
Other	12.4	8.4	6.6
Receivables, net	(296.7)	118.5	(297.3)
Inventories, net	(315.5)	6.5	(244.7)
Other current and noncurrent assets	(2.7)	(238.8)	23.7
Accounts payable	(100.5)	(58.4)	240.1
Accrued liabilities and income taxes	(55.7)	(2.2)	229.6
Other noncurrent liabilities	(160.8)	66.0	(60.0)
Net cash provided by operating activities	1,887.5	2,705.8	2,426.7
Cash Flows from Investing Activities
Capital expenditures	(1,588.3)	(1,639.3)	(1,263.2)
Proceeds from sale of equity method investment	0	0	1,030.0
Proceeds from sale of business	0	0	56.4
Restricted cash	5.1	5.3	(13.7)
Investments in nonconsolidated companies	(15.0)	0	(385.3)
Distributions received from equity investments	2.9	0	0
Other	5.5	6.6	3.7
Net cash (used in) provided by investing activities	(1,589.8)	(1,627.4)	(572.1)
Cash Flows from Financing Activities
Payments of short-term debt	(263.1)	(148.8)	(381.3)
Proceeds from issuance of short-term debt	289.1	167.9	321.8
Payments of long-term debt	(1.5)	(542.8)	(470.2)
Proceeds from issuance of long-term debt	1.9	748.0	17.6
Payment of tender premium on debt	0	(17.2)	(16.1)
Proceeds from stock options exercised	6.0	3.0	20.3
(Contributions by) Distributions to Cargill, Inc.	0	18.5	0
Repurchase of Class A common stock	0	(1,162.5)	0
Excess tax benefits related to stock option exercises	0	0	13.4
Cash dividends paid	(426.6)	(119.5)	(89.3)
Other	(3.6)	(7.7)	(1.2)
Net cash used in financing activities	(397.8)	(1,061.1)	(585.0)
Effect of exchange rate changes on cash	(13.8)	(112.7)	113.8
Net change in cash and cash equivalents	(113.9)	(95.4)	1,383.4
Cash and cash equivalents - beginning of period	3,811.0	3,906.4	2,523.0
Cash and cash equivalents - end of period	$ 3,697.1	$ 3,811.0	$ 3,906.4

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Pension Plans and Other Benefits - Plan Asset FV Measurements (Details) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	$ 1.5	$ 0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	404.4	392.0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	23.4	23.8
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities U S Entities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	53.9	44.6
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities U S Entities [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities U S Entities [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	53.9	44.6
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities U S Entities [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Non U S Entities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	31.0	24.4
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Non U S Entities [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Non U S Entities [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	31.0	24.4
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Non U S Entities [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Real Estate Entities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	17.0	15.6
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Real Estate Entities [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Real Estate Entities [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Equity Securities Real Estate Entities [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	17.0	15.6
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	319.5	323.0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	319.5	323.0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Private Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	6.4	8.2
United States Pension Plans Of U S Entity Defined Benefit [Member] | Private Equity Funds [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Private Equity Funds [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Private Equity Funds [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	6.4	8.2
United States Pension Plans Of U S Entity Defined Benefit [Member] | Fair Value Of U S Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	429.3	415.8
United States Pension Plans Of U S Entity Defined Benefit [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	1.5
United States Pension Plans Of U S Entity Defined Benefit [Member] | Cash And Cash Equivalents [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	1.5
United States Pension Plans Of U S Entity Defined Benefit [Member] | Cash And Cash Equivalents [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0
United States Pension Plans Of U S Entity Defined Benefit [Member] | Cash And Cash Equivalents [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0
Foreign Pension Plans Defined Benefit [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	14.1	5.9
Foreign Pension Plans Defined Benefit [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	258.3	226.1
Foreign Pension Plans Defined Benefit [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	5.9	6.6
Foreign Pension Plans Defined Benefit [Member] | Equity Securities U S Entities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	59.0	51.9
Foreign Pension Plans Defined Benefit [Member] | Equity Securities U S Entities [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Equity Securities U S Entities [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	59.0	51.9
Foreign Pension Plans Defined Benefit [Member] | Equity Securities U S Entities [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	103.9	90.3
Foreign Pension Plans Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	103.9	90.3
Foreign Pension Plans Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Private Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	5.9	6.6
Foreign Pension Plans Defined Benefit [Member] | Private Equity Funds [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Private Equity Funds [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Private Equity Funds [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	5.9	6.6
Foreign Pension Plans Defined Benefit [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	14.1	5.9
Foreign Pension Plans Defined Benefit [Member] | Cash And Cash Equivalents [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	14.1	5.9
Foreign Pension Plans Defined Benefit [Member] | Cash And Cash Equivalents [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Cash And Cash Equivalents [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Equity Securities Canadian Entities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	56.8	50.0
Foreign Pension Plans Defined Benefit [Member] | Equity Securities Canadian Entities [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Equity Securities Canadian Entities [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	56.8	50.0
Foreign Pension Plans Defined Benefit [Member] | Equity Securities Canadian Entities [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Equity Securities Non U S Non Canadian Entities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	38.6	33.9
Foreign Pension Plans Defined Benefit [Member] | Equity Securities Non U S Non Canadian Entities [Member] | Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Equity Securities Non U S Non Canadian Entities [Member] | Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	38.6	33.9
Foreign Pension Plans Defined Benefit [Member] | Equity Securities Non U S Non Canadian Entities [Member] | Fair Value Inputs Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	0	0
Foreign Pension Plans Defined Benefit [Member] | Fair Value Of Canadian Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of asset	$ 278.3	$ 238.6

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Schedule II Valuation and Qualifying Accounts (Tables)

12 Months Ended

May 31, 2013

Valuation And Qualifying Accounts [Abstract]

Schedule Of Valuation And Qualifying Accounts Disclosure [Table Text Block]

SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS

For the Years ended May 31, 2013, 2012, and 2011

In millions

Column A		Column B	Column C		Column D	Column E
			Additions
		Balance	Charges or	Charges or		Balance
		Beginning of	(Reductions) to	(Reductions) to		at End
Description		Period	Costs and Expenses(c)	Other Accounts(a)	Deductions	of Period(b)
Allowance for doubtful accounts, deducted from
	accounts receivable in the balance sheet:
Year ended May 31, 2011		28.7	(3.0)	(0.1)	(2.0)	23.6
Year ended May 31, 2012		23.6	-	(5.1)	(0.1)	18.4
Year ended May 31, 2013		18.4	(1.0)	(1.3)	(0.1)	16.0
Income tax valuation allowance, related to
	deferred income taxes
Year ended May 31, 2011		157.1	23.8	36.5	(8.2)	209.2
Year ended May 31, 2012		209.2	6.2	(35.2)	-	180.2
Year ended May 31, 2013		180.2	(77.7)	(8.9)	-	93.6

(a)For the years ended May 31, 2013, 2012 and 2011, the income tax valuation allowance adjustment was recorded to accumulated other comprehensive income and deferred taxes.

(b)       Allowance for doubtful accounts balance includes $11.3 million, $13.5 million and $20.4 million of allowance on long-term receivables recorded in other long term assets for the years ended May 31, 2013, 2012 and 2011, respectively.

(c)       For the year ended May 31, 2013, the decrease of $77.7 million in income tax valuation allowance is offset by the recognition of a corresponding U.S. deferred tax liability associated with the anticipated reduction in foreign tax credits and, therefore, did not impact our tax expense in Fiscal 2013.

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Pension Plans and Other Benefits (Tables)

12 Months Ended

May 31, 2013

Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule Of Defined Benefit Plans Disclosures [Text Block]

The year-end status of the North American plans was as follows:

				Pension Plans				Postretirement Benefit Plans
(in millions)				2013		2012		2013		2012
Change in projected benefit obligation:
	Benefit obligation at beginning of year		$	743.3	$	694.3	$	59.9	$	60.1
	Service cost			6.5		5.6		0.6		0.3
	Interest cost			32.6		34.5		2.3		2.6
	Plan amendments			15.3		-		-		-
	Actuarial loss			26.9		59.3		0.6		4.0
	Currency fluctuations			(0.4)		(15.5)		-		(0.9)
	Employee contribution			-		-		0.1		0.1
	Benefits paid			(35.6)		(34.9)		(5.6)		(6.3)
Projected benefit obligation at end of year			$	788.6	$	743.3	$	57.9	$	59.9
Change in plan assets:
	Fair value at beginning of year		$	654.4	$	630.0	$	-	$	-
	Currency fluctuations			(0.3)		(12.9)		-		-
	Actual return			53.9		45.4		-		-
	Company contribution			35.2		26.8		5.5		6.2
	Employee contribution			-		-		0.1		0.1
	Benefits paid			(35.6)		(34.9)		(5.6)		(6.3)
Fair value at end of year			$	707.6	$	654.4	$	-	$	-
Funded status of the plans as of May 31			$	(81.0)	$	(88.9)	$	(57.9)	$	(59.9)
Amounts recognized in the consolidated balance sheets:
	Noncurrent assets		$	6.4	$	-	$	-	$	-
	Current liabilities			(0.6)		(0.6)		(5.9)		(6.3)
	Noncurrent liabilities			(86.8)		(88.3)		(52.0)		(53.6)
	Amounts recognized in accumulated other
		comprehensive (income) loss
		Prior service costs (credits)	$	27.1	$	13.2	$	(3.2)	$	(4.9)
		Actuarial (gain)/loss		125.4		131.3		(7.0)		(8.9)

Schedule Of Net Benefit Costs [Table Text Block]

(in millions)			Pension Plans						Postretirement Benefit Plans
Net Periodic Benefit Cost			2013		2012		2011		2013		2012		2011
Service cost		$	6.5	$	5.6	$	5.0	$	0.6	$	0.3	$	0.4
Interest cost			32.6		34.5		36.2		2.3		2.6		3.1
Expected return on plan assets			(37.3)		(35.8)		(38.0)		-		-		-
Amortization of:
	Prior service cost/(credit)		1.3		1.3		0.9		(1.7)		(1.7)		(2.3)
	Actuarial (gain)/loss		16.1		13.4		7.4		(1.3)		(1.8)		(0.7)
Net periodic benefit (income) cost		$	19.2	$	19.0	$	11.5	$	(0.1)	$	(0.6)	$	0.5
Other Changes in Plan Assets and Benefit
Obligations Recognized in Other
Comprehensive Income
Prior service cost (credit) recognized
	in other comprehensive income	$	14.1	$	(1.3)	$	4.9	$	1.7	$	1.7	$	2.3
Net actuarial loss (gain) recognized
	in other comprehensive income		(5.9)		36.3		(26.7)		1.9		5.8		(38.0)
Total recognized in other
	comprehensive income	$	8.2	$	35.0	$	(21.8)	$	3.6	$	7.5	$	(35.7)
Total recognized in net periodic benefit (income)
	cost and other comprehensive income	$	27.4	$	54.0	$	(10.3)	$	3.5	$	6.9	$	(35.2)

Schedule Of Expected Benefit Payments [Table Text Block]

		Pension Plans		Other Postretirement		Medicare Part D
(in millions)		Benefit Payments		Plans Benefit Payments		Adjustments
2014	$	39.7	$	5.9	$	0.5
2015		40.7		5.8		0.5
2016		42.4		5.6		0.5
2017		43.7		5.4		0.5
2018		45.1		4.9		0.4
2019-2023		246.3		17.4		1.6

	2013	Plan Assets as of May 31,	2012	Plan Assets as of May 31,
US Pension Plan Assets	Target	2013	Target	2012
Asset Category
U.S. equity securities	12%	13%	12%	11%
Non-U.S. equity securities	7%	7%	7%	6%
Real estate	3%	4%	3%	4%
Fixed income	75%	74%	75%	77%
Private equity	3%	1%	3%	2%
Other	0%	1%	0%	0%
Total	100%	100%	100%	100%
	2013	Plan Assets as of May 31,	2012	Plan Assets as of May 31,
Canadian Pension Plan Assets	Target	2013	Target	2012
Asset Category
Canadian equity securities	22%	20%	22%	21%
U.S. equity securities	23%	21%	24%	22%
Non-U.S. equity securities	15%	14%	15%	14%
Fixed income	40%	37%	30%	38%
Private equity	0%	2%	9%	3%
Other	0%	6%	0%	2%
Total	100%	100%	100%	100%

Schedule of Allocation of Plan Assets [Table Text Block]

(in millions)			May 31, 2013
U.S. Pension Plan Assets			Total		Level 1			Level 2		Level 3
Asset Category
Cash		$	1.5	$	1.5		$	-	$	-
Equity securities:
	U.S.		53.9		-			53.9		-
	International		31.0		-			31.0		-
	Real estate		17.0		-			-		17.0
Fixed income(a)			319.5		-			319.5		-
Private equity funds(b)			6.4		-			-		6.4
	Total assets at fair value	$	429.3	$	1.5		$	404.4	$	23.4
(in millions)			May 31, 2012
U.S. Pension Plan Assets			Total		Level 1			Level 2		Level 3
Asset Category
Equity securities:
	U.S.	$	44.6	$	-		$	44.6	$	-
	International		24.4		-			24.4		-
	Real estate		15.6		-			-		15.6
Fixed income(a)			323.0		-			323.0		-
Private equity funds(b)			8.2		-			-		8.2
	Total assets at fair value	$	415.8	$	-	$		392.0	$	23.8

(in millions)			May 31, 2013
Canadian Pension Plan Assets			Total		Level 1		Level 2		Level 3
Asset Category
Cash		$	14.1	$	14.1	$	-	$	-
Equity securities:
	Canadian		56.8		-		56.8		-
	U.S.		59.0		-		59.0		-
	Non-U.S. international		38.6		-		38.6		-
Fixed income(a)			103.9		-		103.9		-
Private equity funds(b)			5.9		-		-		5.9
	Total assets at fair value	$	278.3	$	14.1	$	258.3	$	5.9
(in millions)			May 31, 2012
Canadian Pension Plan Assets			Total		Level 1		Level 2		Level 3
Asset Category
Cash		$	5.9	$	5.9	$	-	$	-
Equity securities:
	Canadian		50.0		-		50.0		-
	U.S.		51.9		-		51.9		-
	Non-U.S. international		33.9		-		33.9		-
Fixed income(a)			90.3		-		90.3		-
Private equity funds(b)			6.6		-		-		6.6
	Total assets at fair value	$	238.6	$	5.9	$	226.1	$	6.6

Schedule Of Effect Of Significant Unobservable Inputs Changes In Plan Assets [Table Text Block]

(in millions)		U.S Pension Assets		Canadian Pension Assets
Balance as of June 1, 2011	$	22.8	$	7.2
Net realized and unrealized gains		1.6		0.7
Purchases, issuances, settlements, net		(0.6)		(1.3)
Balance as of May 31, 2012		23.8		6.6
Net realized and unrealized gains		0.4		0.7
Purchases, issuances, settlements, net		(0.8)		(1.4)
Balance as of May 31, 2013	$	23.4	$	5.9

Schedule of Assumptions Used [Table Text Block]

	Pension Plans			Postretirement Benefit Plans
	2013	2012	2011	2013	2012	2011
Discount rate	4.25%	4.44%	5.13%	3.77%	3.92%	4.54%
Expected return on plan assets	6.13%	6.29%	6.87%	-	-	-
Rate of compensation increase	4.00%	4.00%	4.00%	-	-	-

	Pension Plans			Postretirement Benefit Plans
	2013	2012	2011	2013	2012	2011
Discount rate	4.44%	5.13%	5.61%	3.92%	4.54%	5.71%
Expected return on plan assets	6.29%	6.87%	6.92%	-	-	-
Rate of compensation increase	4.00%	4.00%	4.00%	-	-	-

Schedule of Health Care Cost Trend Rates [Table Text Block]

	2013	2012	2011
Health care cost trend rate assumption for the next fiscal year	7.75%	8.00%	8.50%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	5.50%	5.50%	5.50%
Fiscal year that the rate reaches the ultimate trend rate	2019	2019	2015

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

		2013			2012			2011
		One	One		One	One		One		One
		Percentage	Percentage		Percentage	Percentage		Percentage		Percentage
		Point	Point		Point	Point		Point		Point
(in millions)		Increase	Decrease		Increase	Decrease		Increase		Decrease
Total service and interest cost	$	0.1	(0.1)	$	0.2	(0.1)	$	0.1	$	(0.1)
Postretirement benefit obligation		2.7	(2.3)		2.7	(2.3)		2.5		(2.5)

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Schedule II Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Allowance For Doubtful Accounts [Member]
Movement In Valuation Allowances And Reserves Roll Forward
Balance at Beginning of Period	$ 18.4	$ 23.6	$ 28.7
Charge to Costs and Expenses	(1.0)	0	(3.0)
Charged to Other Accounts	(1.3)	(5.1)	(0.1)
Deductions	(0.1)	(0.1)	(2.0)
Balance at End of Period	16.0	18.4	23.6
Valuation Allowance Of Deferred Tax Assets [Member]
Movement In Valuation Allowances And Reserves Roll Forward
Balance at Beginning of Period	180.2	209.2	157.1
Charge to Costs and Expenses	(77.7)	6.2	23.8
Charged to Other Accounts	(8.9)	(35.2)	36.5
Deductions	0	0	(8.2)
Balance at End of Period	93.6	180.2	209.2
Allowance For Doubtful Accounts Noncurrent [Member]
Movement In Valuation Allowances And Reserves Roll Forward
Balance at End of Period	$ 11.3	$ 13.5	$ 20.4

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Fair Value Measurements (Details 2) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012	May 31, 2011	May 31, 2010
Fair Value Assets Measured On Recurring Basis Financial Statement Captions [Abstract]
Cash and cash equivalents	$ 3,697.1	$ 3,811.0	$ 3,906.4	$ 2,523.0
Cash and cash equivalents, fair value	3,697.1	3,811.0
Accounts receivable, carrying amount	1,015.7	751.6
Accounts receivable, fair value	1,015.7	751.6
Accounts payable trade, carrying amount	763.1	912.4
Accounts payable trade, fair value	763.1	912.4
Short-term debt, carrying amount	68.7	42.5
Short-term debt, fair value	68.7	42.5
Long-term debt including current portion, carrying amount	1,010.5	1,010.5
Long-term debt including current portion, fair value	$ 1,093.3	$ 1,116.9

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Schedule II Valuation and Qualifying Accounts

12 Months Ended

May 31, 2013

Valuation And Qualifying Accounts [Abstract]

Schedule Of Valuation And Qualifying Accounts Disclosure [Text Block]

SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS

For the Years ended May 31, 2013, 2012, and 2011

In millions

Column A		Column B	Column C		Column D	Column E
			Additions
		Balance	Charges or	Charges or		Balance
		Beginning of	(Reductions) to	(Reductions) to		at End
Description		Period	Costs and Expenses(c)	Other Accounts(a)	Deductions	of Period(b)
Allowance for doubtful accounts, deducted from
	accounts receivable in the balance sheet:
Year ended May 31, 2011		28.7	(3.0)	(0.1)	(2.0)	23.6
Year ended May 31, 2012		23.6	-	(5.1)	(0.1)	18.4
Year ended May 31, 2013		18.4	(1.0)	(1.3)	(0.1)	16.0
Income tax valuation allowance, related to
	deferred income taxes
Year ended May 31, 2011		157.1	23.8	36.5	(8.2)	209.2
Year ended May 31, 2012		209.2	6.2	(35.2)	-	180.2
Year ended May 31, 2013		180.2	(77.7)	(8.9)	-	93.6

(a)For the years ended May 31, 2013, 2012 and 2011, the income tax valuation allowance adjustment was recorded to accumulated other comprehensive income and deferred taxes.

(b)       Allowance for doubtful accounts balance includes $11.3 million, $13.5 million and $20.4 million of allowance on long-term receivables recorded in other long term assets for the years ended May 31, 2013, 2012 and 2011, respectively.

(c)       For the year ended May 31, 2013, the decrease of $77.7 million in income tax valuation allowance is offset by the recognition of a corresponding U.S. deferred tax liability associated with the anticipated reduction in foreign tax credits and, therefore, did not impact our tax expense in Fiscal 2013.

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Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Related Party Transactions Paragraph Details [Abstract]
Former percentage ownership by Cargill and certain of its subsidiaries	64.00%
Contributions from Cargill, Inc.			$ 18.5
Net amount due from our non-consolidated companies	145.8	134.8
Cargill and Affiliates [Member]
Related Party Transaction [Line Items]
Transactions included in net sales			238.1
Transactions included in cost of goods sold			146.8
Transactions included in selling, general and administrative			6.1
Interest expense (income) paid to/(received from)			0.2
Non-consolidated companies [Member]
Related Party Transaction [Line Items]
Transactions included in net sales	1,263.9	1,321.2	1,015.7
Transactions included in cost of goods sold	$ 632.0	$ 557.3	$ 511.3

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Share-based Payments (Details 3) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012
A summary of the status of the Companys restricted stock units at May 31 is presented below:
The average weighted-average period the unrecognized compesation cost will be recognized (years)	1 year 10 months 24 days
Restricted Stock Units R S U [Member]
A summary of the status of the Companys restricted stock units at May 31 is presented below:
Number of stock units outstanding at beginning of period (shares)	0.6
Granted (shares)	0.3
Issued and canceled (shares)	0.2
Number of stock units outstanding at end of period (shares)	0.7
Weighted-average grant date fair value per share - stock unit awards outstanding, beginning of period	$ 54.47
Granted	$ 57.36
Issued and canceled	$ 53.20
Weighted-average grant date fair value per share - stock unit awards outstanding, end of period	$ 56.40
Performance Stock Unit [Member]
A summary of the status of the Companys restricted stock units at May 31 is presented below:
Number of stock units outstanding at beginning of period (shares)	0.1
Granted (shares)	0.1
Issued and canceled (shares)	0
Number of stock units outstanding at end of period (shares)	0.2	0.1
Weighted-average grant date fair value per share - stock unit awards outstanding, beginning of period	$ 81.10
Granted	$ 71.19
Issued and canceled	$ 0
Weighted-average grant date fair value per share - stock unit awards outstanding, end of period	$ 75.15	$ 81.10
Expected volatility (percent)	38.05%	54.72%
Expected dividend yield (percent)	1.74%	0.28%
Expected term (in years)	3 years	3 years
Risk-free interest rate (percent)	0.31%	0.69%

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Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	$ 17.4	$ 30.7
Derivative liabilities at fair value	45.1	60.7
Foreign Exchange Contract [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	10.7	23.8
Derivative liabilities at fair value	38.6	36.7
Commodity Contract (MMbtu) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	5.0	5.8
Derivative liabilities at fair value	6.1	23.5
Freight Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	1.7	1.1
Derivative liabilities at fair value	0.4	0.5
Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	8.7	20.5
Derivative liabilities at fair value	4.3	0.3
Fair Value Inputs Level 1 [Member] | Foreign Exchange Contract [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	8.7	20.1
Derivative liabilities at fair value	4.3	0.3
Fair Value Inputs Level 1 [Member] | Commodity Contract (MMbtu) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	0	0.4
Derivative liabilities at fair value	0	0
Fair Value Inputs Level 1 [Member] | Freight Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	0	0
Derivative liabilities at fair value	0	0
Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	7.0	9.1
Derivative liabilities at fair value	40.4	59.9
Fair Value Inputs Level 2 [Member] | Foreign Exchange Contract [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	2.0	3.7
Derivative liabilities at fair value	34.3	36.4
Fair Value Inputs Level 2 [Member] | Commodity Contract (MMbtu) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	5.0	5.4
Derivative liabilities at fair value	6.1	23.5
Fair Value Inputs Level 2 [Member] | Freight Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	0	0
Derivative liabilities at fair value	0	0
Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	1.7	1.1
Derivative liabilities at fair value	0.4	0.5
Fair Value Inputs Level 3 [Member] | Foreign Exchange Contract [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	0	0
Derivative liabilities at fair value	0	0
Fair Value Inputs Level 3 [Member] | Commodity Contract (MMbtu) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	0	0
Derivative liabilities at fair value	0	0
Fair Value Inputs Level 3 [Member] | Freight Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Derivative assets at fair value	1.7	1.1
Derivative liabilities at fair value	$ 0.4	$ 0.5

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Pension Plans and Other Benefits - Est Future Other Benefit Plan Pmts (Details) (USD $) In Millions, unless otherwise specified	May 31, 2013
Other North American Postretirement Benefit Plans [Member]
Estimated Future Benefit Payments And Subsidies Receipts Other Plans [Line Items]
2014	$ 5.9
2015	5.8
2016	5.6
2017	5.4
2018	4.9
2019-2023	17.4
Medicare Part D Adjustments [Member]
Estimated Future Benefit Payments And Subsidies Receipts Other Plans [Line Items]
2014	0.5
2015	0.5
2016	0.5
2017	0.5
2018	0.4
2019-2023	$ 1.6

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Financing Arrangements - Short-term debt (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012
Line Of Credit Facility [Line Items]
Total short-term debt	$ 68.7	$ 42.5
Stated interest rates as of the balance sheet date:
Line of Credit Facility, Covenant Terms	The Mosaic Credit Facility requires Mosaic to maintain certain financial ratios, including a maximum ratio of Total Debt to EBITDA (as defined) of 3.0 to 1.0 as well as a minimum Interest Coverage Ratio (as defined) of not less than 3.5 to 1.0.
Additional letters of credit outstanding	9.0
Line Of Credit [Member]
Line Of Credit Facility [Line Items]
Line Of Credit, Facility Expiration Date	Apr. 26, 2016
The Mosaic Credit Facility is available for revolving credit loans of up to $500 million	750.0
The Mosaic Credit Facility is available for swing line loans of up to $20 million	737.3	729.9
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%	0.21%
Line of Credit Facility, Commitment Fee Amount	1.5	1.6
A failure to pay principal or interest under any one item of other indebtedness in excess of $50 million, or breach or default under such indebtedness that permits the holders thereof to accelerate the maturity thereof, will result in a cross-default in the Mosaic Credit Line	50.0
A failure to pay principal or interest for multiple items of other indebtedness in excess of $75 million, or breach or default under such indebtedness that permits the holders thereof to accelerate the maturity thereof, will result in a cross-default in the Mosaic Credit Line	75.0
Total short-term debt	0
Short Term Debt [Member]
Line Of Credit Facility [Line Items]
Total short-term debt		68.7
Stated interest rates as of the balance sheet date:
Stated interest rates - lowest rate	0.45%
Stated interest rates - highest rate	20.50%
Letter Of Credit [Member]
Line Of Credit Facility [Line Items]
Letters of Credit, amount outstanding	$ 12.7	$ 20.1

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Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Interest Paid [Abstract]
Interest paid	$ 52.0	$ 76.7	$ 100.2
Less amount capitalized	52.0	55.7	57.1
Interest, net	0	21.0	43.1
Income taxes paid	299.9	516.4	535.2
Increase (decrease) in accounts payable during the period reported in Investing Activities that arose from acquiring or constructing property, plant and equipment	$ 54.6	$ 56.7	$ 100.1

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Guarantees and Indemnities (Details) (USD $) In Millions, unless otherwise specified	May 31, 2013
Guarantees And Indemnities [Abstract]
Guarantee Obligations Maximum Exposure	$ 35.0

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Goodwill

12 Months Ended

May 31, 2013

Goodwill [Abstract]

Goodwill

10. GOODWILL

The changes in the carrying amount of goodwill, by reporting unit, for the years ended May 31, 2013 and 2012, are as follows:

(in millions)		Phosphates		Potash		Total
Balance as of May 31, 2011	$	534.7	$	1,295.1	$	1,829.8
Foreign currency translation and other		11.9		2.7		14.6
Balance as of May 31, 2012		546.6		1,297.8		1,844.4
Foreign currency translation		-		0.2		0.2
Balance as of May 31, 2013	$	546.6	$	1,298.0	$	1,844.6

151.6

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Property, Plant and Equipment

12 Months Ended

May 31, 2013

Property Plant And Equipment [Abstract]

Property Plant And Equipment Disclosure [Text Block]

6. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consist of the following:

		May 31,
(in millions)		2013		2012
Land	$	188.7	$	187.7
Mineral properties and rights		2,886.7		2,791.0
Buildings and leasehold improvements		1,959.3		1,456.0
Machinery and equipment		5,793.7		4,872.6
Construction in-progress		1,419.2		1,522.8
		12,247.6		10,830.1
Less: accumulated depreciation and depletion		3,760.8		3,284.2
	$	8,486.8	$	7,545.9

Depreciation and depletion expense was $604.8 million, $508.1 million and $447.4 million for fiscal 2013, 2012 and 2011, respectively. Capitalized interest on major construction projects was $53.8 million, $55.7 million and $57.1 million in fiscal 2013, 2012 and 2011, respectively.

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Financing Arrangements - Long-term debt (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012
Long Term Debt Noncurrent Abstract
Stated value of issued debt	$ 1,014.6	$ 1,014.9
Fair value adjustment of debt	3.3	3.7
Discount on Notes Issuance	(7.4)	(8.1)
Total long-term debt	1,010.5	1,010.5
Less current portion	0.9	0.5
Total long-term debt, less current maturities	1,009.6	1,010.0
Aggregate stated value of current portion of issued debt	1.3	0.9
Aggregate fair value adjustment of current portion of long-term debt	0.3	0.3
Aggregate stated value of noncurrent portion of issued debt	1,013.3	1,014.0
Fair Value Option Aggregate Differences Long Term Debt Noncurrent	3.0	3.4
Debt Instrument Unamortized Discount Premium Current Portion	0.7	0.7
Debt Instrument Unamortized Discount Premium Noncurrent Portion	6.7	7.4
Long Term Debt By Maturity Abstract
Next twelve months	0.9
Year 2	0.6
Year 3	7.0
Year 4	1.5
Year 5	0
Thereafter	1,000.5
Total	1,010.5	1,010.5
Industrial Revenue Bond [Member]
Long Term Debt Noncurrent Abstract
Stated value of issued debt	17.4	17.6
Fair value adjustment of debt	0	0
Total long-term debt	17.4	17.6
Stated interest rates:
Stated interest rates - lowest rate	1.53%
Stated interest rates - highest rate	1.53%
Effective interest rate	1.53%
Long Term Debt By Maturity Abstract
Total	17.4	17.6
Unsecured Notes [Member]
Long Term Debt Noncurrent Abstract
Stated value of issued debt	750.0	750.0
Fair value adjustment of debt	0	0
Discount on Notes Issuance	(7.4)	(8.1)
Total long-term debt	742.6	741.9
Stated interest rates:
Stated interest rates - lowest rate	3.75%
Stated interest rates - highest rate	4.88%
Effective interest rate	4.30%
Long Term Debt By Maturity Abstract
Total	742.6	741.9
Unsecured Debentures [Member]
Long Term Debt Noncurrent Abstract
Stated value of issued debt	236.1	236.1
Fair value adjustment of debt	3.3	3.7
Total long-term debt	239.4	239.8
Stated interest rates:
Stated interest rates - lowest rate	7.30%
Stated interest rates - highest rate	7.38%
Effective interest rate	7.08%
Long Term Debt By Maturity Abstract
Total	239.4	239.8
Capital Lease And Other Obligations [Member]
Long Term Debt Noncurrent Abstract
Stated value of issued debt	11.1	11.2
Fair value adjustment of debt	0	0
Total long-term debt	11.1	11.2
Stated interest rates:
Stated interest rates - lowest rate	5.50%
Stated interest rates - highest rate	9.00%
Effective interest rate	7.70%
Long Term Debt By Maturity Abstract
Total	$ 11.1	$ 11.2

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Income Taxes

12 Months Ended

May 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes

13. INCOME TAXES

The provision for income taxes for the years ended May 31 consisted of the following:

(in millions)		2013		2012		2011
Current:
Federal	$	138.8	$	314.5	$	134.9
State		42.5		61.0		52.0
Non-U.S.		81.5		77.0		380.1
Total current		262.8		452.5		567.0
Deferred:
Federal		(32.9)		7.4		99.2
State		(14.1)		9.0		7.0
Non-U.S.		125.2		242.5		79.6
Total deferred		78.2		258.9		185.8
Provision for income taxes	$	341.0	$	711.4	$	752.8

The components of earnings from consolidated companies before income taxes, and the effects of significant adjustments to tax computed at the federal statutory rate, were as follows:

(in millions)		2013		2012		2011
United States earnings	$	1,158.1	$	1,412.7	$	1,477.5
Non-U.S. earnings		1,056.4		1,216.2		1,793.8
Earnings from consolidated companies before income taxes	$	2,214.5	$	2,628.9	$	3,271.3
Computed tax at the U.S. federal statutory rate of 35%		35.0%		35.0%		35.0%
State and local income taxes, net of federal income tax benefit		1.6%		1.6%		1.3%
Percentage depletion in excess of basis		(7.1%)		(6.6%)		(4.5%)
Impact of non-U.S. earnings		(10.2%)		(2.9%)		(7.5%)
Change in valuation allowance		(3.6%)		0.4%		0.5%
Other items (none in excess of 5% of computed tax)		(0.3%)		(0.4%)		(1.8%)
Effective tax rate		15.4%		27.1%		23.0%

The fiscal 2013 effective tax rate reflects a decrease of $179.3 million due to the resolution of certain tax matters which is included in the impact of non-U.S. earnings above.

The fiscal 2011 effective tax rate reflects a $116.2million expense related to the sale of our investment in Fosfertil, and our Cubatão, Brazil, facility to Vale S.A. and its subsidiaries.

We have no intention of remitting certain undistributed earnings of non-U.S. subsidiaries aggregating $2.7 billion as of May 31, 2013, and accordingly, no deferred tax liability has been established relative to these earnings. The calculation of the unrecognized deferred tax liability related to these earnings is complex and is not practicable.

Significant components of our deferred tax liabilities and assets as of May 31 were as follows:

(in millions)				2013		2012
Deferred tax liabilities:
	Depreciation and amortization		$	956.2	$	761.6
	Depletion			427.2		465.4
	Partnership tax bases differences			104.0		105.4
	Undistributed earnings of non-U.S. subsidiaries			215.8		215.8
	Other liabilities			227.8		91.9
	Total deferred tax liabilities		$	1,931.0	$	1,640.1
Deferred tax assets:
	Alternative minimum tax credit carryforwards		$	63.1	$	88.1
	Capital loss carryforwards			6.9		7.1
	Foreign tax credit carryforwards			528.0		529.7
	Net operating loss carryforwards			158.6		168.8
	Pension plans and other benefits			52.1		54.2
	Asset retirement obligations			237.6		220.2
	Other assets			218.2		190.3
		Subtotal		1,264.5		1,258.4
	Valuation allowance			93.6		180.2
	Net deferred tax assets			1,170.9		1,078.2
Net deferred tax liabilities			$	(760.1)	$	(561.9)

			May 31,
(in millions)			2013		2012
Gross unrecognized tax benefits, beginning of year		$	476.9	$	263.5
Gross increases:
	Prior year tax positions		7.7		103.1
	Current year tax positions		36.6		146.9
Gross decreases:
	Prior year tax positions		(204.3)		(34.8)
Currency translation			(0.1)		(1.8)
Gross unrecognized tax benefits, end of year		$	316.8	$	476.9

We recognize interest and penalties related to unrecognized tax benefits as a component of our income tax expense. Interest and penalties accrued in our Consolidated Balance Sheets as of May 31, 2013 and May 31, 2012 are $53.8 million and $52.0 million, respectively, and are included in other noncurrent liabilities in the Consolidated Balance Sheets.

We operate in multiple tax jurisdictions, both within the United States and outside the United States, and face audits from various tax authorities regarding transfer pricing, deductibility of certain expenses, and intercompany transactions, as well as other matters. With few exceptions, we are no longer subject to examination for tax years prior to 2001.

We are currently under audit by the U.S. Internal Revenue Service for fiscal2011 and 2012 and by the Canada Revenue Agency for fiscal 2001 to 2011. Based on the information available, we do not anticipate significant changes to our unrecognized tax benefits as a result of these examinations.

The Company has entered into a tax treaty-based process to resolve certain multi-jurisdictional uncertain income tax matters. An unfavorable resolution of those matters could impact our ability to utilize our foreign tax credit carryforward and affect the amount of undistributed earnings of non-U.S. subsidiaries for which we have not recognized a deferred tax liability.

During the second quarter of fiscal 2013, the Internal Revenue Service concluded its audit for fiscal 2009and 2010.

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Financing Arrangements

12 Months Ended

May 31, 2013

Debt Disclosure [Abstract]

Financing Arrangements

11. FINANCING ARRANGEMENTS

Mosaic Credit Facility

As of May 31, 2013, Mosaic and MOS Holdings are co-borrowers under an unsecured five-year revolving credit facility of up to $750 million (the “Mosaic Credit Facility”), which is intended to serve as our primary senior unsecured bank credit facility to meet the combined liquidity needs of all of our business segments. The maturity date of the Mosaic Credit Facility is April 26, 2016.

The obligations under the Mosaic Credit Facility are guaranteed by our subsidiaries which own and operate our domestic distribution activities, domestic phosphate rock mines and concentrated phosphates production facilities, our Carlsbad, New Mexico potash mine, and our potash mines at Belle Plaine and Colonsay, Saskatchewan, Canada. The Mosaic Credit Facility has cross-default provisions that, in general, provide that a failure to pay principal or interest under any one item of other indebtedness in excess of $50 million or $75 million for multiple items of other indebtedness, or breach or default under such indebtedness that permits the holders thereof to accelerate the maturity thereof, will result in a cross-default.

The Mosaic Credit Facility requires Mosaic to maintain certain financial ratios, including a maximum ratio of Total Debt to EBITDA (as defined) of 3.0 to 1.0 as well as a minimum Interest Coverage Ratio (as defined) of not less than 3.5 to 1.0.

The Mosaic Credit Facility also contains other events of default and covenants that limit various matters. These events of default include limitations on indebtedness, liens, investments and acquisitions (other than capital expenditures), certain mergers, certain asset sales of the borrowers and the guarantors and other matters customary for credit facilities of this nature.

Short-Term Debt

Short-term debt consists of the revolving credit facility under the Mosaic Credit Facility, under which there were no borrowings as of May 31, 2013 and 2012, and various other short-term borrowings related to our international distribution activities. These short-term borrowings outstanding were $68.7 million as of May 31, 2013, are denominated in various currencies and bear interest at rates between 0.45% and 20.5% and mature at various dates.

We had outstanding letters of credit that utilized a portion of the amount available for revolving loans under the Mosaic Credit Facility of $12.7 million and $20.1 million as of May 31, 2013 and 2012, respectively. The net available borrowings for revolving loans under the Mosaic Credit Facility as of May 31, 2013 and 2012 were approximately $737.3 million and $729.9 million, respectively. Unused commitment fees under the Mosaic Credit Facility accrued at an annual rate of 0.20%in fiscal 2013 and 0.21% in fiscal 2012, generating expenses of $1.5 million and $1.6 million, respectively.

We had additional outstanding letters of credit of $9.0 million as of May 31, 2013.

Long-Term Debt, including Current Maturities

We have senior notes outstanding, consisting of $450 million aggregate principal amount of 3.750% senior notes due 2021 and $300 million aggregate principal amount of 4.875% Senior Notes due 2041 (collectively, the “Senior Notes”).

The Senior Notes are Mosaic's senior unsecured obligations and rank equally in right of payment with Mosaic's existing and future senior unsecured indebtedness. The indenture governing the Senior Notes contains restrictive covenants limiting debt secured by liens, sale and leaseback transactions and mergers, consolidations and sales of substantially all assets as well as other events of default.

Two debentures, issued by Mosaic Global Holdings, Inc., one of our consolidated subsidiaries, the first due in 2018 (the “2018 Debentures”) and the second due in 2028 (the “2028 Debentures”) remain outstanding with amounts of $89.0 million and $147.1 million, respectively, as of May 31, 2013. The indentures governing the 2018 Debentures and the 2028 Debentures also contain restrictive covenants limiting debt secured by liens, sale and leaseback transactions and mergers, consolidations and sales of substantially all assets as well as events of default. The obligations under the 2018 Debentures and the 2028 Debentures are guaranteed by several of the Company's subsidiaries.

Long-term debt primarily consists of term loans, industrial revenue bonds, secured notes, unsecured notes, and unsecured debentures. Long-term debt as of May 31, 2013and 2012, respectively, consisted of the following:

		May 31,	May 31,					Combination								Combination
		2013	2013			May 31,		Fair				May 31,		May 31,		Fair				May 31,
		Stated	Effective			2013		Market		Discount		2013		2012		Market		Discount		2012
		Interest	Interest	Maturity		Stated		Value		on Notes		Carrying		Stated		Value		on Notes		Carrying
(in millions)		Rate	Rate	Date		Value		Adjustment		Issuance		Value		Value		Adjustment		Issuance		Value
Industrial revenue and recovery zone bonds		1.53%	1.53%	2040	$	17.4	$	-	$	-	$	17.4	$	17.6	$	-	$	-	$	17.6
Unsecured notes		3.75% - 4.88%	4.30%	2021-2041		750.0		-		(7.4)		742.6		750.0		-		(8.1)		741.9
Unsecured debentures		7.30% - 7.38%	7.08%	2018-2028		236.1		3.3		-		239.4		236.1		3.7		-		239.8
Other		5.50% - 9.00%	7.70%	2014-2017		11.1		-		-		11.1		11.2		-		-		11.2
Total long-term debt						1,014.6		3.3		(7.4)		1,010.5		1,014.9		3.7		(8.1)		1,010.5
Less current portion						1.3		0.3		(0.7)		0.9		0.9		0.3		(0.7)		0.5
Total long-term debt,
	less current maturities				$	1,013.3	$	3.0		(6.7)	$	1,009.6	$	1,014.0	$	3.4		(7.4)	$	1,010.0

Scheduled maturities of long-term debt are as follows for the periods ending May 31:

(in millions)
2014		$	0.9
2015			0.6
2016			7.0
2017			1.5
2018			-
Thereafter			1,000.5
	Total	$	1,010.5

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Document and Entity Information (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	May 31, 2013	Jul. 15, 2013 Common Class A [Member]	Jul. 15, 2013 No Class Common Stock [Member]
Entity registrant name	MOSAIC CO
Document type	10-K
Entity central index key	0001285785
Amendment flag	false
Entity current reporting status	Yes
Entity voluntary filers	No
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Document period end date	May 31, 2013
Current fiscal year end date	--05-31
Entity filer category	Large Accelerated Filer
Entity well known seasoned issuer	Yes
Entity common stock shares outstanding		128,759,772	297,061,272
Entity public float	$ 20.1

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Pension Plans and Other Benefits - Other Disclosures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure Abstract
Maximum potential annual amount of pension cost for former Cargill employees	$ 2.0
Maximum aggregate amount of pension cost for former Cargill employees	19.2
Remaining aggregate amount of potential pension cost for former Cargill employees	4.9
Actual annual amount of pension cost for former Cargill employees	3.3	3.6	2.9
The estimated net actuarial gain (loss) for the pension plans and postretirement plans that will be amortized from accumulated other comprehensive income into net periodic benefit cost in the next fiscal year	7.0
The estimated prior service cost for the pension plans and postretirement plans that will be amortized from accumulated other comprehensive income into net periodic benefit cost in the next fiscal year	2.6
The amount of estimated cash contribution to the defined benefit pension plans needed next fiscal year to meet minimum funding requirements	65.8
The amount of cash contribution to the defined benefit postretirement medical plans needed next fiscal year to meet minimum funding requirements	$ 5.9

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Variable Interest Entities	12 Months Ended
	May 31, 2013
Variable Interest Entities [Abstract]
Variable Interest Entities	12. VARIABLE INTEREST ENTITIES Mosaic is the primary beneficiary of and consolidates two variable interest entities (“VIE’s”) within our Phosphates segment: PhosChem and South Fort Meade Partnership, L.P. (“SFMP”). We determine whether we are the primary beneficiary of an entity subject to consolidation based on a qualitative assessment of the purpose and design of the VIE, the risks that the VIE were designed to create and pass along to other entities, the activities of the VIE that could be directed and which entity could direct them, and the expected relative impact of those activities on the economic performance of the VIE. We assess our VIE determination with respect to an entity on an ongoing basis. We have not identified any additional VIEs in which we hold a significant interest. PhosChem is an export association of United States phosphate producers that markets our phosphate products internationally. We, along with the other member, are, subject to certain conditions and exceptions, contractually obligated to reimburse PhosChem for our respective pro rata share of any operating expenses or other liabilities. PhosChem had net sales of $1.3 billion, $2.4 billion and $2.3 billion for the years ended May 31, 2013, 2012 and 2011, respectively, which are included in our consolidated net sales. PhosChem currently funds its operations through ongoing sales receipts. We determined that, because we are PhosChem’s exclusive export agent for the marketing, solicitation of orders and freighting of dry phosphatic materials, we have the power to direct the activities that most significantly impact PhosChem’s economic performance. Because Mosaic accounts for the majority of sales volume marketed through PhosChem, we have the obligation to absorb losses or right to receive benefits that could be significant to PhosChem. SFMP owns the mineable acres at our South Fort Meade phosphate mine. We have a long-term mineral lease with SFMP which, in general, expires on the earlier of: (i) December 31, 2025, or (ii) the date that we have completed mining and reclamation obligations associated with the leased property. In addition to lease payments, we pay SFMP a royalty on each tonne mined and shipped from the areas that we lease. SFMP had no external sales in fiscal 2013, 2012 and 2011. We determined that, because we control the day-to-day mining decisions and are responsible for obtaining mining permits, we have the power to direct the activities that most significantly impact SFMP’s economic performance. Because of our guaranteed rental and royalty payments to the partnership, we have the obligation to absorb losses or right to receive benefits that could potentially be significant to SFMP.   No additional financial or other support has been provided to these VIE’s beyond what was previously contractually required during any periods presented. The carrying amounts and classification of assets and liabilities included in our Consolidated Balance Sheets for these consolidated entities are as follows: ##RS

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Investments in Non-Consolidated Companies (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Equity Method Investment Summarized Financial Information Income Statement [Abstract]
Net sales	$ 4,475.2	$ 4,938.4	$ 4,061.7
Net (loss) earnings	67.5	97.9	0.5
Mosaics share of equity in net (loss) earnings	18.3	13.3	(5.0)
Equity Method Investment Summarized Financial Information Balance Sheet [Abstract]
Total assets of equity method investees	1,841.4	1,776.0	1,690.6
Total liabilities of equity method investees	1,149.8	1,005.0	1,022.5
Mosaics share of equity in net assets of equity method investees	$ 256.4	$ 282.8	$ 247.2

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Investments in Non-Consolidated Companies (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011	May 31, 2013 Equity Method Investee Gulf Sulphur Services [Member]	May 31, 2013 Equity Method Investee River Bend Ag [Member]	May 31, 2013 Equity Method Investee I F C [Member]	May 31, 2013 Equity Method Investee Yunnan Three Circles Sinochem Cargill Fertilizers [Member]	May 31, 2013 Equity Method Investments [Member]	May 31, 2013 Equity Method Investee Canpotex [Member]	Sep. 29, 2010 Equity Method Investee Fosfertil [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest				50.00%	50.00%	45.00%	35.00%	35.00%	43.00%	20.10%
Realized pretax gain on sale of equity method investee	$ 0	$ 0	$ 685.6

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Pension Plans and Other Benefits - Changes in Defined Benefit Obligations and Plan Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Amounts recognized in the consolidated balance sheets:
Unfunded pension obligations in noncurrent liabilities	$ (140.7)	$ (142.2)
Amounts recognized in accumulated other comprehensive (income) loss:
Accumulated benefit obligation for the defined benefit pension plans	782.5	736.2
North American Pension Plans [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	743.3	694.3
Service cost	6.5	5.6	5.0
Interest cost	32.6	34.5	36.2
Plan amendments	15.3	0
Actuarial loss (gain)	26.9	59.3
Currency fluctuations	(0.4)	(15.5)
Employee contribution	0	0
Benefits paid	(35.6)	(34.9)
Benefit obligation at end of year	788.6	743.3	694.3
Change in plan assets:
Fair value at beginning of year	654.4	630.0
Currency fluctuations	(0.3)	(12.9)
Actual return	53.9	45.4
Company contribution	35.2	26.8
Employee contribution	0	0
Benefits paid	(35.6)	(34.9)
Fair value at end of year	707.6	654.4	630.0
Funded status of the plans at May 31	(81.0)	(88.9)
Amounts recognized in the consolidated balance sheets:
Overfunded plans in noncurrent assets	6.4	0
Unfunded pension obligations in current liabilities	(0.6)	(0.6)
Unfunded pension obligations in noncurrent liabilities	(86.8)	(88.3)
Amounts recognized in accumulated other comprehensive (income) loss:
Prior service costs	27.1	13.2
Actuarial (gain)/loss	125.4	131.3
Accumulated benefit obligation for the defined benefit pension plans	27.4	54.0	(10.3)
North American Postretirement Benefit Plans [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	59.9	60.1
Service cost	0.6	0.3	0.4
Interest cost	2.3	2.6	3.1
Plan amendments	0	0
Actuarial loss (gain)	0.6	4.0
Currency fluctuations	0	(0.9)
Employee contribution	0.1	0.1
Benefits paid	(5.6)	(6.3)
Benefit obligation at end of year	57.9	59.9	60.1
Change in plan assets:
Fair value at beginning of year	0
Currency fluctuations	0	0
Actual return	0	0
Company contribution	5.5	6.2
Employee contribution	0.1	0.1
Benefits paid	(5.6)	(6.3)
Fair value at end of year	0	0
Funded status of the plans at May 31	(57.9)	(59.9)
Amounts recognized in the consolidated balance sheets:
Overfunded plans in noncurrent assets	0	0
Unfunded pension obligations in current liabilities	(5.9)	(6.3)
Unfunded pension obligations in noncurrent liabilities	(52.0)	(53.6)
Amounts recognized in accumulated other comprehensive (income) loss:
Prior service costs	(3.2)	(4.9)
Actuarial (gain)/loss	(7.0)	(8.9)
Accumulated benefit obligation for the defined benefit pension plans	$ 3.5	$ 6.9	$ (35.2)