The Mosaic Company (MOS) 10-K 23 Feb 22 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 01, 2022
Cover [Abstract]
Document type	10-K
Document Annual Report	true
Document period end date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-32327
Entity registrant name	Mosaic Co
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-1026454
Entity Address, Address Line One	101 East Kennedy Blvd
Entity Address, Address Line Two	Suite 2500
Entity Address, City or Town	Tampa
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33602
City Area Code	800
Local Phone Number	918-8270
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	MOS
Security Exchange Name	NYSE
Entity well known seasoned issuer	Yes
Entity voluntary filers	No
Entity current reporting status	Yes
Entity Interactive Data Current	Yes
Entity filer category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity public float	$ 12.1
Entity common stock shares outstanding		368,309,275
Entity central index key	0001285785
Amendment flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
ICFR Auditor Attestation Flag	true
Auditor Firm ID	185
Auditor Location	Dallas, TX
Auditor Name	KPMG LLP

Recently Issued Accounting Guid

Recently Issued Accounting Guidance	12 Months Ended
	Dec. 31, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recently Issued Accounting Guidance	RECENTLY ISSUED ACCOUNTING GUIDANCE In June 2016, the Financial Accounting Standards Board (“ FASB ”) issued guidance which revises the accounting for credit losses on financial instruments within its scope. The standard introduces an approach, based on expected losses, to estimate credit losses on certain types of financial instruments, including trade and other receivables, and modifies the impairment model for available-for-sale (“ AFS ”) debt securities. The guidance amends the current other-than-temporary impairment model for AFS debt securities and provides that any impairment related to credit losses be recognized as an allowance (which could be reversed) rather than as a permanent reduction in the amortized cost basis of that security. We adopted this standard prospectively on January 1, 2020 and revised our accounting policies and procedures to reflect the requirements of this standard related to our trade receivables and AFS debt securities. Based on the composition of our trade receivables, current market conditions, and historical credit loss activity, adoption of this standard did not significantly impact our consolidated results of operations or financial condition as reported in this 10-K Report.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Statement of Presentation and 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. The accompanying Consolidated Financial Statements include the accounts of Mosaic and its majority owned subsidiaries. Certain investments in companies in which 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 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 net sales and expenses during the reporting periods. The most significant estimates made by management relate to the estimates of fair value of acquired assets and liabilities, 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 (“ ARO
Revenue Recognition	Revenue Recognition We generate revenues primarily by producing and marketing phosphate and potash crop nutrients. Revenue is recognized when control of the product is transferred to the customer, which is generally upon transfer of title to the customer based on the contractual terms of each arrangement. Title is typically transferred to the customer upon shipment of the product. In certain circumstances, which are referred to as final price deferred arrangements, we ship product prior to the establishment of a valid sales contract. In such cases, we retain control of the product and do not recognize revenue until a sales contract has been agreed to with the customer. Revenue is measured as the amount of consideration we expect to receive in exchange for the transfer of our goods. Our products are generally sold based on market prices prevailing at the time the sales contract is signed or through contracts which are priced at the time of shipment, except for the final priced deferred arrangements discussed above. Sales incentives are recorded as a reduction of revenue at the time of initial sale. We estimate the variable consideration related to our sales incentive programs based on the sales terms with customers and historical experience. Shipping and handling costs are included as a component of cost of goods sold. We generally expense sales commissions when incurred because the amortization period would have been one year or less. These costs are recorded within sales and marketing expenses. We have elected to recognize the cost for freight and shipping as an expense in cost of sales, when control over the product has passed to the customer. For information regarding sales by product type and by geographic area, see Note 24 of our Notes to Consolidated Financial Statements.
Non-Income Taxes	Non-Income Taxes 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. 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 $301.5 million, $176.1 million and $211.9 million during 2021, 2020 and 2019, respectively. We have approximately $112.5 million of assets recorded as of December 31, 2021 related to PIS and Cofins, which is a Brazilian federal value-added tax, mostly earned in 2008 through 2021 that we believe will be realized through offsetting income tax payments or other federal taxes or receiving cash refunds. Should the Brazilian government determine that these are not valid credits upon audit, this could impact our results in such period. We have recorded the PIS and Cofins credits at amounts which we believe are probable of collection. Information regarding PIS and Cofins taxes already audited is included in Note 22 of our Notes to Consolidated Financial Statements.
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 and intercompany loans in our Canadian entities denominated in U.S. dollars, intercompany loans receivable in our U.S. entities denominated in Brazilian real, 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.
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 net realizable value. Costs for substantially all inventories are determined using the weighted average cost basis. 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. Net realizable value of our inventory is defined as forecasted selling prices less reasonably predictable selling costs. 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.
Property, Plant and Equipment and Recoverability of Long-Lived Assets	Property, Plant and Equipment and Recoverability of Long-Lived Assets 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 plant 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 and units-of-production method over the following useful lives: machinery and equipment three three 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 or periods of expected use 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. Long-lived assets, including fixed assets and right-of-use assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. An impairment assessment involves management judgment and estimates of factors such as 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. 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.
Lease, Policy	Leases Right of use (“ ROU ”) assets represent our right to use an underlying asset for the lease term. Lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the commencement date of the lease, based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The Company’s incremental borrowing rate for a lease is the rate of interest it would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms. For both operating and finance leases, the initial ROU asset equals the lease liability, plus initial direct costs, less lease incentives received. Our lease agreements may include options to extend or terminate the lease, which are included in the lease term at the commencement date when it is reasonably certain that we will exercise that option. In general, we do not consider optional periods included in our lease agreements as reasonably certain of exercise at inception. At inception, we determine whether an arrangement is a lease and the appropriate lease classification. Operating leases with terms greater than twelve months are included as operating lease ROU assets within other assets and the associated lease liabilities within accrued liabilities and other noncurrent liabilities on our consolidated balance sheets. Finance leases with terms greater than twelve months are included as finance ROU assets within property and equipment and the associated finance lease liabilities within current maturities of long-term debt and long-term debt on our consolidated balance sheets. Leases with terms of less than twelve months, referred to as short-term leases, do not create a ROU asset or lease liability on the balance sheet. We have lease agreements with lease and non-lease components, which are generally accounted for separately. For full-service railcar leases, we account for the lease and non-lease components as a single lease component. Additionally, for certain equipment leases, we apply assumptions using a portfolio approach, given the generally consistent terms of the agreements. Lease payments based on usage (for example, per-mile or per-hour charges), referred to as variable lease costs, are recorded separately from the determination of the ROU asset and lease liability.
Contingencies	Contingencies Accruals for environmental remediation efforts are recorded when costs are probable and 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. 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. 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 our 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. Legal costs are expensed as 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.
Earnings Per Share	The numerator for basic and diluted earnings per share (“ EPS ”) is net earnings attributable to Mosaic. 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.
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. The cash flow presentation of dividends received from equity method investees is determined by evaluation of the facts, circumstances and nature of the distribution.
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 on a quantitative basis at the reporting unit level on an annual basis or upon the occurrence of events that may indicate possible impairment. Impairment is measured as the excess carrying value over the fair value of goodwill.
Structured Accounts Payable Arrangements	In Brazil, we finance some of our potash-based fertilizer, sulfur, ammonia and other raw material product purchases through third-party contractual arrangements. These arrangements provide that the third-party intermediary advance the amount of the scheduled payment to the vendor, less an appropriate discount, at a scheduled payment date and Mosaic makes payment to the third-party intermediary at a later date, stipulated in accordance with the commercial terms negotiated. At December 31, 2021 and 2020, these structured accounts payable arrangements were $743.7 million and $640.0 million, respectively.
Marketable Securities Held in Trusts	The RCRA Trusts hold investments, which are restricted from our general use, in marketable debt securities classified as available-for-sale and are carried at fair value. As a result, unrealized gains and losses are included in other comprehensive income until realized, unless it is determined that the entire unamortized cost basis of the investment is not expected to be recovered. A credit loss would then be recognized in operations for the amount of the expected credit loss. As of December 31, 2021, we expect to recover our amortized cost on all available-for-sale securities and have not established an allowance for credit loss.. We review the fair value hierarchy classification on a quarterly basis. Changes in the ability to observe valuation inputs may result in a reclassification of levels for certain securities within the fair value hierarchy. We determine the fair market values of our available-for-sale securities and certain other assets based on the fair value hierarchy described below: 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
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.
Derivative and Hedging Activities	We periodically enter into derivatives to mitigate our exposure to foreign currency risks, interest rate movements and the effects of changing commodity 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
Fair Value Measurements	For cash and cash equivalents, accounts receivable, net, accounts payable, structured accounts payable arrangements 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, including the current portion, 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.
Concentration Risk, Credit Risk, Policy	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 potash products are sold primarily through Canpotex, an export association. 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 December 31, 2021, and 2020, there were $382.5 million and $89.4 million, respectively, of trade accounts receivable due from Canpotex. During 2021, 2020 and 2019, sales to Canpotex were $1.1 billion, $795.2 million and $952.5 million, respectively.

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales	$ 12,357.4	$ 8,681.7	$ 8,906.3
Cost of goods sold	9,157.1	7,616.8	8,009
Gross margin	3,200.3	1,064.9	897.3
Selling, general and administrative expenses	430.5	371.5	354.1
Restructuring and related cost, incurred costs	158.1	0	1,462.1
Other operating expenses	143.2	280.5	176
Operating (loss) earnings	2,468.5	412.9	(1,094.9)
Interest expense, net	(169.1)	(180.6)	(182.9)
Foreign currency transaction (loss) gain	(78.5)	(64.3)	20.2
Other income	3.9	12.9	1.5
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	2,224.8	180.9	(1,256.1)
Provision for (benefit from) income taxes	597.7	(578.5)	(224.7)
Earnings (loss) from consolidated companies	1,627.1	759.4	(1,031.4)
Equity in net earnings (loss) of nonconsolidated companies	7.8	(93.8)	(59.4)
Net earnings (loss) including noncontrolling interests	1,634.9	665.6	(1,090.8)
Less: Net earnings (loss) attributable to noncontrolling interests	4.3	(0.5)	(23.4)
Net earnings (loss) attributable to Mosaic	$ 1,630.6	$ 666.1	$ (1,067.4)
Basic net earnings (loss) per share attributable to Mosaic	$ 4.31	$ 1.76	$ (2.78)
Basic weighted average number of shares outstanding (in shares)	378.1	379	383.8
Diluted net earnings (loss) per share attributable to Mosaic	$ 4.27	$ 1.75	$ (2.78)
Diluted weighted average number of shares outstanding (in shares)	381.6	381.3	383.8

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings (loss) including noncontrolling interest	$ 1,634.9	$ 665.6	$ (1,090.8)
Other comprehensive income (loss), net of tax
Foreign currency translation gain (loss), net of tax (expense) benefit	(108.2)	(249.5)	69.4
Net actuarial gain (loss) and prior service cost, net of tax (expense) benefit	36.9	19.9	(24.3)
Net Gain (Loss) on Interest Rate Swaps Qualifying as Hedge, After Reclassification, Before Tax	1.5	1.6	1.7
Net Gain (Loss) on Marketable Securities Held in Trust, After Reclassification and Tax	(17.6)	12.8	10.9
Other comprehensive (loss) income	(87.4)	(215.2)	57.7
Comprehensive income (loss)	1,547.5	450.4	(1,033.1)
Less: Comprehensive income (loss) attributable to noncontrolling interest	2.5	(7.7)	(24.6)
Comprehensive income (loss) attributable to Mosaic	$ 1,545	$ 458.1	$ (1,008.5)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 769.5	$ 574
Receivables, net	1,531.9	881.1
Inventories	2,741.4	1,739.2
Other current assets	282.5	326.9
Total current assets	5,325.3	3,521.2
Property, plant and equipment, net	12,475.3	11,854.3
Investments in nonconsolidated companies	691.8	673.1
Goodwill	1,172.2	1,173
Deferred Income Tax Assets, Net	997.1	1,179.4
Other assets	1,374.7	1,388.8
Total assets	22,036.4	19,789.8	[1]
Other Short-term Borrowings	302.8	0.1
Current liabilities:
Current maturities of long-term debt	596.6	504.2
Structured accounts payable arrangements	743.7	640
Accounts payable	1,260.7	769.1
Accrued liabilities	1,883.6	1,233.1
Total current liabilities	4,787.4	3,146.5
Long-term debt, less current maturities	3,382.2	4,073.8
Deferred Income Tax Liabilities, Net	1,016.2	1,060.8
Other noncurrent liabilities	2,102.1	1,753.5
Equity:
Preferred stock, par value	0	0
Common stock, value	3.7	3.8
Capital in excess of par value	478	872.8
Retained earnings	12,014.2	10,511
Accumulated other comprehensive loss	(1,891.8)	(1,806.2)
Total Mosaic stockholders’ equity	10,604.1	9,581.4
Non-controlling interests	144.4	173.8
Total equity	10,748.5	9,755.2
Total liabilities and equity	$ 22,036.4	$ 19,789.8
[1]	In 2019, we recorded an impairment of goodwill in Phosphates of $588.6 million, which reduced the total asset balance

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	15,000,000	15,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, issued (in shares)	389,974,041	389,646,939
Common stock, outstanding (in shares)	379,091,544	378,764,442

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net earnings (loss) including noncontrolling interest	$ 1,634.9	$ 665.6	$ (1,090.8)
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation, depletion and amortization	812.9	847.6	882.7
Business Combination, Inventory Acquired, Amortization of Fair Value Adjustment	0	0	(5.5)
Deferred and other income taxes	98.8	(684)	(261.3)
Equity in net (earnings) loss of nonconsolidated companies, net of dividends	(2.1)	97.1	64.6
Accretion expense for asset retirement obligations	71.9	68	62.4
Accretion expense for leases	13.4	24.2	18.6
Share-based compensation expense	29.5	17.8	27.9
Goodwill, Impairment Loss	0	0	588.6
Unrealized (gain) loss on derivatives	7.2	(26.6)	(59.2)
Foreign Currency Transaction Loss, before Tax		(14.1)	(50.1)
Foreign Currency Transaction Gain (Loss), before Tax	(2.6)
Proceeds from Sale of Securities, Operating Activities	0	34.7	0
Closure costs	158.1	0	871
(Gain) loss on disposal of fixed assets	(5.3)	16.3	18.7
Other	0	(19.1)	(3.2)
Changes in assets and liabilities:
Receivables, net	(683.6)	(153.6)	34.6
Inventories, net	(1,067.9)	191.4	128.1
Other current assets and noncurrent assets	(18)	66.1	(36)
Accounts payable and accrued liabilities	995.1	333.3	(175.2)
Other noncurrent liabilities	144.7	89.7	(20.7)
Net cash provided by operating activities	2,187	1,582.6	1,095.4
Cash Flows from Investing Activities
Capital expenditures	(1,288.6)	(1,170.6)	(1,272.2)
Purchases of available-for-sale securities - restricted	(433.6)	(618.7)	(557.6)
Proceeds from sale of available-for-sale securities - restricted	410.1	607.2	533.2
Proceeds from sale of assets	28.1	0	4
Payments to acquire businesses, gross	(24.1)	0	(55.1)
Payments to acquire held-to-maturity securities	(3.2)	(6.1)	(15.4)
Proceeds from sale of held-to-maturity securities	0.8	1.7	2.3
Other	(11.8)	(3)	(0.1)
Net cash used in investing activities	(1,322.3)	(1,189.5)	(1,360.9)
Cash Flows from Financing Activities
Repayments of Other Short-term Debt	726.6	1,542.5	554.2
Proceeds from Other Short-term Debt	1,029.3	1,521.1	591
Payments of structured accounts payable arrangements	(1,028.4)	(1,156.2)	(977.1)
Proceeds from structured accounts payable arrangements	1,122.7	1,037.4	1,124.2
Collections of transferred receivables	445	0	0
Payments of transferred receivables	(363.9)	0	0
Payments of long-term debt	(608.3)	(66.9)	(48.3)
Proceeds from issuance of long-term debt	0	4.7	0
Repurchases of stock	(410.9)	0	(149.9)
Cash dividends paid	(103.7)	(75.8)	(67.2)
Payments of Ordinary Dividends, Noncontrolling Interest	(31.3)	(0.6)	(0.7)
Other	(6)	(5)	0
Net cash used in financing activities	(682.1)	(283.8)	(82.2)
Effect of exchange rate changes on cash	9.3	(47.2)	9
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	191.9	62.1	(338.7)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents - Beginning of Period	594.4	532.3	871
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents - End of Period	786.3	594.4	532.3
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	769.5	574	519.1
Restricted cash in other current assets	8.3	8.1	7.8
Restricted cash in other assets	8.5	12.3	5.4
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents - End of Period	$ 786.3	$ 594.4	$ 532.3

Consolidated Statements of Shar

Consolidated Statements of Shareholders Equity - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Retained EarningsAccounting Standards Update 2014-09	Accumulated Other Comprehensive Income (Loss)	Non- Controlling Interests
Beginning balance at Dec. 31, 2018	$ 10,604.7	$ 3.8	$ 985.9	$ 11,064.7	$ 0.6	$ (1,657.1)	$ 207.4
Common stock shares outstanding, beginning balance (in shares) at Dec. 31, 2018		385,500,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income (loss)	(1,033.1)			(1,067.4)		58.9	(24.6)
Stock Issued During Period, Shares, Restricted Stock Award, Gross		400,000
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	(5.6)		(5.6)
Stock based compensation	27.9		27.9
Stock Repurchased During Period, Shares		(7,100,000)
Stock Repurchased During Period, Value			(149.8)
Dividends, Common Stock, Cash	(149.8)			(76.4)
Dividends for noncontrolling interests	(76.4)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	(0.7)						0.7
Ending balance at Dec. 31, 2019	9,367.6	$ 3.8	858.4	9,921.5		(1,598.2)	182.1
Common stock shares outstanding, ending balance (in shares) at Dec. 31, 2019		378,800,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income (loss)	450.4			666.1		(208)	(7.7)
Stock Issued During Period, Shares, Restricted Stock Award, Gross		300,000
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	(2.7)		(2.7)
Stock based compensation	17.1		17.1
Dividends, Common Stock, Cash	(76.6)			(76.6)
Dividends for noncontrolling interests	(0.6)						(0.6)
Ending balance at Dec. 31, 2020	$ 9,755.2	$ 3.8	872.8	10,511		(1,806.2)	173.8
Common stock shares outstanding, ending balance (in shares) at Dec. 31, 2020	378,764,442	379,100,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income (loss)	$ 1,547.5			1,630.6		(85.6)	2.5
Stock Issued During Period, Shares, Restricted Stock Award, Gross		800,000
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	(11.3)		(11.3)
Stock based compensation	$ 26.4		$ 26.4
The total intrinsic value of options exercised during the fiscal year	3,200,000		3,200,000
Stock Repurchased During Period, Shares	(11,200,371)	(11,200,000)
Stock Repurchased During Period, Value	$ (410.9)	$ 0.1	$ (410.8)
Dividends, Common Stock, Cash	(127.4)			(127.4)
Dividends for noncontrolling interests	(31.3)						(31.3)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	(2.9)		2.3				0.6
Ending balance at Dec. 31, 2021	$ 10,748.5	$ 3.7	$ 478	$ 12,014.2		$ (1,891.8)	$ 144.4
Common stock shares outstanding, ending balance (in shares) at Dec. 31, 2021	379,091,544	368,700,000

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends per share (in usd per share)	$ 0.30	$ 0.20	$ 0.10

Significant Accounting Polici_2

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Significant Accounting Policies	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. The accompanying Consolidated Financial Statements include the accounts of Mosaic and its majority owned subsidiaries. Certain investments in companies in which 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 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 net sales and expenses during the reporting periods. The most significant estimates made by management relate to the estimates of fair value of acquired assets and liabilities, 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 (“ ARO ”), and income tax-related accounts, including the valuation allowance against deferred income tax assets. Actual results could differ from these estimates. Revenue Recognition We generate revenues primarily by producing and marketing phosphate and potash crop nutrients. Revenue is recognized when control of the product is transferred to the customer, which is generally upon transfer of title to the customer based on the contractual terms of each arrangement. Title is typically transferred to the customer upon shipment of the product. In certain circumstances, which are referred to as final price deferred arrangements, we ship product prior to the establishment of a valid sales contract. In such cases, we retain control of the product and do not recognize revenue until a sales contract has been agreed to with the customer. Revenue is measured as the amount of consideration we expect to receive in exchange for the transfer of our goods. Our products are generally sold based on market prices prevailing at the time the sales contract is signed or through contracts which are priced at the time of shipment, except for the final priced deferred arrangements discussed above. Sales incentives are recorded as a reduction of revenue at the time of initial sale. We estimate the variable consideration related to our sales incentive programs based on the sales terms with customers and historical experience. Shipping and handling costs are included as a component of cost of goods sold. We generally expense sales commissions when incurred because the amortization period would have been one year or less. These costs are recorded within sales and marketing expenses. We have elected to recognize the cost for freight and shipping as an expense in cost of sales, when control over the product has passed to the customer. For information regarding sales by product type and by geographic area, see Note 24 of our Notes to Consolidated Financial Statements. Non-Income Taxes 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. 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 $301.5 million, $176.1 million and $211.9 million during 2021, 2020 and 2019, respectively. We have approximately $112.5 million of assets recorded as of December 31, 2021 related to PIS and Cofins, which is a Brazilian federal value-added tax, mostly earned in 2008 through 2021 that we believe will be realized through offsetting income tax payments or other federal taxes or receiving cash refunds. Should the Brazilian government determine that these are not valid credits upon audit, this could impact our results in such period. We have recorded the PIS and Cofins credits at amounts which we believe are probable of collection. Information regarding PIS and Cofins taxes already audited is included in Note 22 of our Notes to Consolidated Financial Statements. 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 and intercompany loans in our Canadian entities denominated in U.S. dollars, intercompany loans receivable in our U.S. entities denominated in Brazilian real, 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 potash products are sold primarily through Canpotex, an export association. 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 December 31, 2021, and 2020, there were $382.5 million and $89.4 million, respectively, of trade accounts receivable due from Canpotex. During 2021, 2020 and 2019, sales to Canpotex were $1.1 billion, $795.2 million and $952.5 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 net realizable value. Costs for substantially all inventories are determined using the weighted average cost basis. 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. Net realizable value of our inventory is defined as forecasted selling prices less reasonably predictable selling costs. 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. Property, Plant and Equipment and Recoverability of Long-Lived Assets 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 plant 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 and units-of-production method over the following useful lives: machinery and equipment three three 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 or periods of expected use 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. Long-lived assets, including fixed assets and right-of-use assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. An impairment assessment involves management judgment and estimates of factors such as 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. 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. Leases Right of use (“ ROU ”) assets represent our right to use an underlying asset for the lease term. Lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the commencement date of the lease, based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The Company’s incremental borrowing rate for a lease is the rate of interest it would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms. For both operating and finance leases, the initial ROU asset equals the lease liability, plus initial direct costs, less lease incentives received. Our lease agreements may include options to extend or terminate the lease, which are included in the lease term at the commencement date when it is reasonably certain that we will exercise that option. In general, we do not consider optional periods included in our lease agreements as reasonably certain of exercise at inception. At inception, we determine whether an arrangement is a lease and the appropriate lease classification. Operating leases with terms greater than twelve months are included as operating lease ROU assets within other assets and the associated lease liabilities within accrued liabilities and other noncurrent liabilities on our consolidated balance sheets. Finance leases with terms greater than twelve months are included as finance ROU assets within property and equipment and the associated finance lease liabilities within current maturities of long-term debt and long-term debt on our consolidated balance sheets. Leases with terms of less than twelve months, referred to as short-term leases, do not create a ROU asset or lease liability on the balance sheet. We have lease agreements with lease and non-lease components, which are generally accounted for separately. For full-service railcar leases, we account for the lease and non-lease components as a single lease component. Additionally, for certain equipment leases, we apply assumptions using a portfolio approach, given the generally consistent terms of the agreements. Lease payments based on usage (for example, per-mile or per-hour charges), referred to as variable lease costs, are recorded separately from the determination of the ROU asset and lease liability. Contingencies Accruals for environmental remediation efforts are recorded when costs are probable and 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. 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. 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 our 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. Legal costs are expensed as 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. Additional Accounting Policies To facilitate a better understanding of our consolidated financial statements we have disclosed the following significant accounting policies (with the exception of those identified above) throughout the following notes, with the related financial disclosures by major caption: Note Topic Page 8 Investments in Non-Consolidated Companies F- 53 9 Goodwill F- 55 10 Structured Accounts Payable Arrangements F- 56 11 Marketable Securities Held in Trusts F- 58 12 Income Taxes F- 60 13 Accounting for Asset Retirement Obligations F- 65 14 Accounting for Derivative and Hedging Activities F- 66 15 Fair Value Measurements F- 67

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings per share	EARNINGS PER SHARE The numerator for basic and diluted earnings per share (“ EPS ”) is net earnings attributable to Mosaic. 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 December 31, (in millions) 2021 2020 2019 Net earnings (loss) attributable to Mosaic $ 1,630.6 $ 666.1 $ (1,067.4) Basic weighted average number of shares outstanding attributable to common stockholders 378.1 379.0 383.8 Dilutive impact of share-based awards 3.5 2.3 — Diluted weighted average number of shares outstanding 381.6 381.3 383.8 Basic net earnings (loss) per share $ 4.31 $ 1.76 $ (2.78) Diluted net earnings (loss) per share $ 4.27 $ 1.75 $ (2.78) A total of 0.5 million shares for 2021, 2.3 million shares for 2020 and 2.5 million shares for 2019 of common stock subject to issuance related to share-based awards have been excluded from the calculation of diluted EPS because the effect would have been anti-dilutive.

Cash Flow Information

Cash Flow Information	12 Months Ended
	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Cash Flow Information	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 December 31, (in millions) 2021 2020 2019 Cash paid during the period for: Interest $ 220.0 $ 232.8 $ 231.3 Less amount capitalized 30.1 33.3 28.5 Cash interest, net $ 189.9 $ 199.5 $ 202.8 Income taxes $ 208.6 $ 6.2 $ 46.5 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 $18.6 million, $(29.8) million and $63.2 million for 2021, 2020 and 2019, respectively. We accrued $43.6 million related to the dividends declared in 2021 that will be paid in 2022. At December 31, 2020 and 2019, we had accrued dividends of $20.4 million and $20.0 million which were paid in 2021 and 2020, respectively. We had non-cash investing and financing transactions related to right-of-use assets obtained in exchange for lease obligations assets under finance leases in 2021 of $8.9 million. Non-cash investing and financing transactions related to assets acquired under capital leases were $36.4 million and $88.2 million for 2020 and 2019, respectively. Depreciation, depletion and amortization includes $811.8 million, $846.4 million and $877.6 million related to depreciation and depletion of property, plant and equipment, and $1.1 million, $1.2 million and $5.1 million related to amortization of intangible assets for 2021, 2020 and 2019, respectively.

Pension Plans and Other Benefit

Pension Plans and Other Benefits	12 Months Ended
	Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Pension Plans And Other Benefits	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. 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. Defined Benefit We sponsor various defined benefit pension plans in the U.S. and in Canada. Benefits are based on different combinations of years of service and compensation levels, depending on the plan. 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. We sponsor various defined benefit pension plans in Brazil, and we acquired through the Acquisition multi-employer pension plans for certain of our Brazil associates. All our pension plans are governed by the Brazilian pension plans regulatory agency, National Superintendence of Supplementary Pensions. Our Brazil plans are not individually significant to the Company’s consolidated financial statements after factoring in the multi-employer pension plan indemnification that we acquired through the Acquisition. We made contributions to these plans, net of indemnification, of $0.2 million and $0.4 million during the years ended December 31, 2021 and 2020, respectively. Accounting for Pension Plans The year-end status of the North American pension plans was as follows: Pension Plans Years Ended December 31, (in millions) 2021 2020 Change in projected benefit obligation: Benefit obligation at beginning of period $ 796.6 $ 755.5 Service cost 4.4 4.2 Interest cost 14.6 20.9 Actuarial loss (31.1) 49.8 Currency fluctuations 0.3 10.9 Benefits paid (45.2) (44.7) Projected benefit obligation at end of period $ 739.6 $ 796.6 Change in plan assets: Fair value at beginning of period $ 845.2 $ 790.6 Currency fluctuations 0.4 11.0 Actual return 1.1 82.4 Company contribution 5.5 5.9 Benefits paid (45.2) (44.7) Fair value at end of period $ 807.0 $ 845.2 Funded status of the plans as of the end of period $ 67.4 $ 48.6 Amounts recognized in the consolidated balance sheets: Noncurrent assets $ 78.1 $ 59.7 Current liabilities (0.9) (0.6) Noncurrent liabilities (9.8) (10.5) Amounts recognized in accumulated other comprehensive (income) loss Prior service costs $ 13.7 $ 15.8 Actuarial loss 83.1 88.7 The accumulated benefit obligation for the defined benefit pension plans was $739.1 million and $796.1 million as of December 31, 2021 and 2020, respectively. The components of net annual periodic benefit costs and other amounts recognized in other comprehensive income include the following components: Pension Plans (in millions) Years Ended December 31, 2021 2020 2019 Net Periodic Benefit Cost Service cost $ 4.4 $ 4.2 $ 4.8 Interest cost 14.6 20.9 25.0 Expected return on plan assets (30.4) (34.2) (33.8) Amortization of: Prior service cost 2.1 2.3 2.3 Actuarial loss 3.8 9.2 9.2 Preliminary net periodic benefit cost $ (5.5) $ 2.4 $ 7.5 Curtailment/settlement expense — 1.0 — Total net periodic benefit cost $ (5.5) $ 3.4 $ 7.5 Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income Prior service (credit) cost recognized in other comprehensive income $ (2.1) $ (2.3) $ 5.5 Net actuarial gain recognized in other comprehensive income (5.6) (8.6) (13.9) Total recognized in other comprehensive income (loss) $ (7.7) $ (10.9) $ (8.4) Total recognized in net periodic benefit income and other comprehensive income $ (13.2) $ (7.5) $ (0.9) The estimated net actuarial (gain) loss and prior service cost (credit) for the pension plans and postretirement plans that will be amortized from accumulated other comprehensive income into net periodic benefit cost in 2022 is $3.9 million. The following estimated benefit payments, which reflect estimated future service are expected to be paid by the related plans in the years ending December 31: (in millions) Pension Plans Other Postretirement Medicare Part D 2022 $ 46.9 $ 2.9 $ 0.1 2023 44.5 2.7 0.1 2024 44.2 2.5 0.1 2025 44.1 2.2 0.1 2026 44.0 2.0 0.1 2027-2031 212.0 7.8 0.2 In 2022, we expect to contribute cash of at least $5.6 million to the pension plans to meet minimum funding requirements. 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. For the U.S. plans, we utilize an asset allocation policy that seeks to reduce funded status volatility over time. As such, the primary investment objective beyond accumulating sufficient assets to meet future benefit obligations is to monitor and manage the assets of the plan to better insulate the asset portfolio from changes in interest rates that impact 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 100% allocation to fixed income strategies. For the Canadian pension plans the primary investment objective is to secure the promised pension benefits through capital preservation and appreciation to better manage the asset/liability gap and interest rate risk. A secondary investment objective is to most effectively manage investment volatility to reduce the variability of the Company’s required contributions. The plans are expected to achieve an annual overall return, over a five-year rolling period, consistent with or in excess of total fund benchmarks that reflect each plan’s strategic allocations and respective market benchmarks at the individual asset class level. Management of the asset/liability gap of the plans and performance results are reviewed quarterly. Until September 2018, Mosaic had the four Canadian pension plans, two salaried and two hourly plans, managed in one master trust. In order to better match the assets with the liabilities of each plan, Mosaic decided to split the master trust into one trust for each plan. Currently, our policy includes an 80% allocation to fixed income and 20% to return-seeking strategies for the salaried and hourly plans. Actual allocations may experience temporary fluctuations based on market movements and investment strategies. A significant amount of the assets are invested in funds that are managed by a group of professional investment managers through Mosaic’s investment advisor. These funds are mainly commingled funds. Performance is reviewed by Mosaic management monthly by comparing each fund’s return to a benchmark with an in-depth quarterly review presented by Mosaic’s investment advisor to the Global Pension Investment Committee. We do not have 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: (in millions) December 31, 2021 Pension Plan Asset Category Total Level 1 Level 2 Level 3 Cash $ 5.2 $ 5.2 $ — $ — Equity securities (a) 71.3 — 71.3 — Fixed income (b) 720.0 — 720.0 — Private equity funds 10.5 — — 10.5 Total assets at fair value $ 807.0 $ 5.2 $ 791.3 $ 10.5 (in millions) December 31, 2020 Pension Plan Asset Category Total Level 1 Level 2 Level 3 Cash $ 4.6 $ 4.6 $ — $ — Equity securities (a) 198.5 — 198.5 — Fixed income (b) 641.0 — 641.0 — Private equity funds 1.1 — — 1.1 Total assets at fair value $ 845.2 $ 4.6 $ 839.5 $ 1.1 ______________________________ (a) This class, which includes several funds, was invested approximately 44% in U.S. equity securities, 1% in Canadian equity securities and 55% in other international equity securities as of December 31, 2021, and 43% in U.S. equity securities, 0% in Canadian equity securities and 57% in other international equity securities as of December 31, 2020. (b) This class, which includes several funds, was invested approximately 44% in corporate debt securities, 49% in governmental securities in the U.S. and Canada and 7% in other foreign entity debt securities as of December 31, 2021, and 48% in corporate debt securities, 45% in governmental securities in the U.S. and Canada and 7% in other foreign entity debt securities as of December 31, 2020. 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 from future expectations of the U.S. Treasury real yield curve. Weighted average assumptions used to determine benefit obligations were as follows: Pension Plans Years Ended December 31, 2021 2020 2019 Discount rate 2.84 % 2.40 % 3.12 % Expected return on plan assets 3.25 % 3.89 % 5.13 % Rate of compensation increase 3.00 % 3.00 % 3.00 % Weighted-average assumptions used to determine net benefit cost were as follows: Pension Plans Years Ended December 31, 2021 2020 2019 Discount rate 2.44 % 3.12 % 4.09 % Service cost discount rate 2.64 % 3.15 % 4.00 % Interest cost discount rate 1.90 % 2.83 % 3.77 % Expected return on plan assets 3.89 % 4.88 % 5.14 % Rate of compensation increase 3.00 % 3.00 % 3.50 % Defined Contribution Plans Eligible salaried and non-union hourly employees in the U.S. participate in a defined contribution investment plan which permits 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, subject to Internal Revenue Service limits. Participant contributions, matching contributions and the related earnings immediately vest. Mosaic 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. Certain union employees participate in a defined contribution retirement plan based on collective bargaining agreements. 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. The expense attributable to defined contribution plans in the U.S. and Canada was $55.8 million, $48.0 million and $56.4 million for 2021, 2020 and 2019, respectively. 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 North American Retiree Health Plans are unfunded and the projected benefit obligation was $31.1 million and $35.0 million as of December 31, 2021 and 2020, respectively. This liability should continue to decrease due to our limited exposure. The related income statement effects of the Retiree Health Plans are not material to the Company. We anticipate contributing cash of at least $2.9 million in 2022 to the postretirement medical benefit plans to fund anticipated benefit payments. The year-end status of the Brazil postretirement medical benefit plans with a discount rate of 7.69% and 7.45% on each of December 31, 2021 and December 31, 2020, respectively was as follows: Postretirement Medical Benefits Years Ended December 31, (in millions) 2021 2020 Change in accumulated postretirement benefit obligation (“APBO”): APBO at beginning of year $ 96.8 $ 109.4 Service cost 0.3 1.0 Interest cost 6.6 7.9 Actuarial loss (22.8) 7.9 Currency fluctuations (3.9) (27.7) Benefits paid (1.7) (1.7) Plan Amendments (17.3) — APBO at end of year $ 58.0 $ 96.8 Change in plan assets: Company contribution $ 1.7 $ 1.7 Benefits paid (1.7) (1.7) Fair value at end of year $ — $ — Unfunded status of the plans as of the end of the year $ (58.0) $ (96.8) Amounts recognized in the consolidated balance sheets: Current liabilities $ — $ (1.7) Noncurrent liabilities (58.0) (95.1) Amounts recognized in accumulated other comprehensive (income) loss Prior service costs (credits) $ (14.8) $ — Actuarial loss $ 16.1 $ 42.6

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2021
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 December 31, (in millions) 2021 2020 2019 Net earnings (loss) attributable to Mosaic $ 1,630.6 $ 666.1 $ (1,067.4) Basic weighted average number of shares outstanding attributable to common stockholders 378.1 379.0 383.8 Dilutive impact of share-based awards 3.5 2.3 — Diluted weighted average number of shares outstanding 381.6 381.3 383.8 Basic net earnings (loss) per share $ 4.31 $ 1.76 $ (2.78) Diluted net earnings (loss) per share $ 4.27 $ 1.75 $ (2.78)

Cash Flow Information (Tables)

Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Schedule Of Cash Flow Supplemental Disclosures Table	Supplemental disclosures of cash paid for interest and income taxes and non-cash investing and financing information is as follows: Years Ended December 31, (in millions) 2021 2020 2019 Cash paid during the period for: Interest $ 220.0 $ 232.8 $ 231.3 Less amount capitalized 30.1 33.3 28.5 Cash interest, net $ 189.9 $ 199.5 $ 202.8 Income taxes $ 208.6 $ 6.2 $ 46.5

Pension Plans and Other Benef_2

Pension Plans and Other Benefits	12 Months Ended
	Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Schedule Of Defined Benefit Plans Disclosures	The year-end status of the North American pension plans was as follows: Pension Plans Years Ended December 31, (in millions) 2021 2020 Change in projected benefit obligation: Benefit obligation at beginning of period $ 796.6 $ 755.5 Service cost 4.4 4.2 Interest cost 14.6 20.9 Actuarial loss (31.1) 49.8 Currency fluctuations 0.3 10.9 Benefits paid (45.2) (44.7) Projected benefit obligation at end of period $ 739.6 $ 796.6 Change in plan assets: Fair value at beginning of period $ 845.2 $ 790.6 Currency fluctuations 0.4 11.0 Actual return 1.1 82.4 Company contribution 5.5 5.9 Benefits paid (45.2) (44.7) Fair value at end of period $ 807.0 $ 845.2 Funded status of the plans as of the end of period $ 67.4 $ 48.6 Amounts recognized in the consolidated balance sheets: Noncurrent assets $ 78.1 $ 59.7 Current liabilities (0.9) (0.6) Noncurrent liabilities (9.8) (10.5) Amounts recognized in accumulated other comprehensive (income) loss Prior service costs $ 13.7 $ 15.8 Actuarial loss 83.1 88.7
Schedule Of Net Benefit Costs	The components of net annual periodic benefit costs and other amounts recognized in other comprehensive income include the following components: Pension Plans (in millions) Years Ended December 31, 2021 2020 2019 Net Periodic Benefit Cost Service cost $ 4.4 $ 4.2 $ 4.8 Interest cost 14.6 20.9 25.0 Expected return on plan assets (30.4) (34.2) (33.8) Amortization of: Prior service cost 2.1 2.3 2.3 Actuarial loss 3.8 9.2 9.2 Preliminary net periodic benefit cost $ (5.5) $ 2.4 $ 7.5 Curtailment/settlement expense — 1.0 — Total net periodic benefit cost $ (5.5) $ 3.4 $ 7.5 Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income Prior service (credit) cost recognized in other comprehensive income $ (2.1) $ (2.3) $ 5.5 Net actuarial gain recognized in other comprehensive income (5.6) (8.6) (13.9) Total recognized in other comprehensive income (loss) $ (7.7) $ (10.9) $ (8.4) Total recognized in net periodic benefit income and other comprehensive income $ (13.2) $ (7.5) $ (0.9)
Schedule Of Expected Benefit Payments	The following estimated benefit payments, which reflect estimated future service are expected to be paid by the related plans in the years ending December 31: (in millions) Pension Plans Other Postretirement Medicare Part D 2022 $ 46.9 $ 2.9 $ 0.1 2023 44.5 2.7 0.1 2024 44.2 2.5 0.1 2025 44.1 2.2 0.1 2026 44.0 2.0 0.1 2027-2031 212.0 7.8 0.2
Schedule of Allocation 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: (in millions) December 31, 2021 Pension Plan Asset Category Total Level 1 Level 2 Level 3 Cash $ 5.2 $ 5.2 $ — $ — Equity securities (a) 71.3 — 71.3 — Fixed income (b) 720.0 — 720.0 — Private equity funds 10.5 — — 10.5 Total assets at fair value $ 807.0 $ 5.2 $ 791.3 $ 10.5 (in millions) December 31, 2020 Pension Plan Asset Category Total Level 1 Level 2 Level 3 Cash $ 4.6 $ 4.6 $ — $ — Equity securities (a) 198.5 — 198.5 — Fixed income (b) 641.0 — 641.0 — Private equity funds 1.1 — — 1.1 Total assets at fair value $ 845.2 $ 4.6 $ 839.5 $ 1.1 ______________________________ (a) This class, which includes several funds, was invested approximately 44% in U.S. equity securities, 1% in Canadian equity securities and 55% in other international equity securities as of December 31, 2021, and 43% in U.S. equity securities, 0% in Canadian equity securities and 57% in other international equity securities as of December 31, 2020. (b) This class, which includes several funds, was invested approximately 44% in corporate debt securities, 49% in governmental securities in the U.S. and Canada and 7% in other foreign entity debt securities as of December 31, 2021, and 48% in corporate debt securities, 45% in governmental securities in the U.S. and Canada and 7% in other foreign entity debt securities as of December 31, 2020.
Schedule of Assumptions Used	Weighted average assumptions used to determine benefit obligations were as follows: Pension Plans Years Ended December 31, 2021 2020 2019 Discount rate 2.84 % 2.40 % 3.12 % Expected return on plan assets 3.25 % 3.89 % 5.13 % Rate of compensation increase 3.00 % 3.00 % 3.00 % Weighted-average assumptions used to determine net benefit cost were as follows: Pension Plans Years Ended December 31, 2021 2020 2019 Discount rate 2.44 % 3.12 % 4.09 % Service cost discount rate 2.64 % 3.15 % 4.00 % Interest cost discount rate 1.90 % 2.83 % 3.77 % Expected return on plan assets 3.89 % 4.88 % 5.14 % Rate of compensation increase 3.00 % 3.00 % 3.50 %
Schedule of Changes in Accumulated Postemployment Benefit Obligations	The year-end status of the Brazil postretirement medical benefit plans with a discount rate of 7.69% and 7.45% on each of December 31, 2021 and December 31, 2020, respectively was as follows: Postretirement Medical Benefits Years Ended December 31, (in millions) 2021 2020 Change in accumulated postretirement benefit obligation (“APBO”): APBO at beginning of year $ 96.8 $ 109.4 Service cost 0.3 1.0 Interest cost 6.6 7.9 Actuarial loss (22.8) 7.9 Currency fluctuations (3.9) (27.7) Benefits paid (1.7) (1.7) Plan Amendments (17.3) — APBO at end of year $ 58.0 $ 96.8 Change in plan assets: Company contribution $ 1.7 $ 1.7 Benefits paid (1.7) (1.7) Fair value at end of year $ — $ — Unfunded status of the plans as of the end of the year $ (58.0) $ (96.8) Amounts recognized in the consolidated balance sheets: Current liabilities $ — $ (1.7) Noncurrent liabilities (58.0) (95.1) Amounts recognized in accumulated other comprehensive (income) loss Prior service costs (credits) $ (14.8) $ — Actuarial loss $ 16.1 $ 42.6

Summary of Significant Accounti

Summary of Significant Accounting Policies - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Net sales	$ 12,357.4	$ 8,681.7	$ 8,906.3
Canadian resources taxes and royalties included in cost of goods sold	301.5	176.1	211.9
Assets related to PIS and Cofins and income tax credits in Brazil	112.5
Other Affiliates [Member]
Sales And Receivables [Line Items]
Accounts Receivable, Related Parties	$ 382.5	89.4
Minimum | Machinery and equipment
Useful life	3 years
Minimum | Buildings and Leashold Improvements
Useful life	3 years
Maximum
Duration of short term investments in number of days	90 days
Maximum | Machinery and equipment
Useful life	25 years
Maximum | Buildings and Leashold Improvements
Useful life	40 years
Canpotex
Accounting Policies [Abstract]
Net sales	$ 1,100	$ 795.2	$ 952.5

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net earnings (loss) attributable to Mosaic	$ 1,630.6	$ 666.1	$ (1,067.4)
Basic weighted average number of shares outstanding (in shares)	378.1	379	383.8
Dilutive impact of share-based awards (in shares)	3.5	2.3	0
Diluted weighted average number of shares outstanding (in shares)	381.6	381.3	383.8
Basic net (loss) earnings per share (in usd per share)	$ 4.31	$ 1.76	$ (2.78)
Diluted net (loss) earnings per share (in usd per share)	$ 4.27	$ 1.75	$ (2.78)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.5	2.3	2.5

Cash Flow Information (Details)

Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 8.9	$ 36.4	$ 88.2
Increase Decrease in Capital Expenditures Incurred But Not Yet Paid	18.6	(29.8)	63.2
Accrued dividends	43.6	20.4
Cash paid (received) during the period for:
Interest	220	232.8	231.3
Less amount capitalized	30.1	33.3	28.5
Cash interest, net	189.9	199.5	202.8
Income taxes	208.6	6.2	46.5
Dividends payable		20.4	20
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	8.9	36.4	88.2
Depreciation	811.8	846.4	877.6
Amortization of Intangible Assets	$ 1.1	$ 1.2	$ 5.1

Pension Plans and Other Benef_3

Pension Plans and Other Benefits - Changes in Defined Benefit Obligations and Plan Assets - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Change in plan assets:
Fair value at beginning of period	$ 845.2
Fair value at end of period	807	$ 845.2
Amounts recognized in the consolidated balance sheets:
Noncurrent liabilities	(114.4)	(158.5)
Amounts recognized in accumulated other comprehensive (income) loss
Prior service costs	(14.8)	0
North American Pension Plans
Change in projected benefit obligation:
Benefit obligation at beginning of period	796.6	755.5
Service cost	4.4	4.2	$ 4.8
Interest cost	14.6	20.9	25
Actuarial loss	(31.1)	49.8
Currency fluctuations	0.3	10.9
Benefits paid	(45.2)	(44.7)
Projected benefit obligation at end of period	739.6	796.6	755.5
Change in plan assets:
Fair value at beginning of period	845.2	790.6
Currency fluctuations	0.4	11
Actual return	1.1	82.4
Company contribution	5.5	5.9
Benefits paid	(45.2)	(44.7)
Fair value at end of period	807	845.2	$ 790.6
Funded status of the plans as of the end of period	67.4	48.6
Amounts recognized in the consolidated balance sheets:
Noncurrent assets	78.1	59.7
Current liabilities	(0.9)	(0.6)
Noncurrent liabilities	(9.8)	(10.5)
Amounts recognized in accumulated other comprehensive (income) loss
Prior service costs	13.7	15.8
Actuarial loss	83.1	88.7
Accumulated benefit obligation for the defined benefit pension plans	739.1	796.1
North American Other Postretirement Benefits Plan
Change in projected benefit obligation:
Benefit obligation at beginning of period	35
Projected benefit obligation at end of period	31.1	35
Brazil Defined Benefit Pension Plans
Change in plan assets:
Company contribution	$ 0.2	$ 0.4

Pension Plans and Other Benef_4

Pension Plans and Other Benefits - Changes in Net Periodic Pension Cost - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income
The estimated net actuarial (gain) loss and prior service cost (credit) for the pension plans that will be amortized from accumulated other comprehensive income into net periodic benefit cost in the next fiscal year	$ 3.9
North American Pension Plans
Net Periodic Benefit Cost Before Settlements:
Service cost	4.4	$ 4.2	$ 4.8
Interest cost	14.6	20.9	25
Expected return on plan assets	(30.4)	(34.2)	(33.8)
Prior service cost	2.1	2.3	2.3
Actuarial loss	3.8	9.2	9.2
Preliminary net periodic benefit cost	(5.5)	2.4	7.5
Curtailment/settlement expense	0	1	0
Total net periodic benefit cost	(5.5)	3.4	7.5
Other Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income
Prior service (credit) cost recognized in other comprehensive income	(2.1)	(2.3)	5.5
Net actuarial gain recognized in other comprehensive income	(5.6)	(8.6)	(13.9)
Total recognized in other comprehensive income (loss)	(7.7)	(10.9)	(8.4)
Total recognized in net periodic benefit income and other comprehensive income	$ (13.2)	$ (7.5)	$ (0.9)

Pension Plans and Other Benef_5

Pension Plans and Other Benefits - Est Future Defined Benefit Pension Plan Pmts $ in Millions	Dec. 31, 2021USD ($)
Pension Plans Benefit Payments
Defined Benefit Plan Disclosure
2020	$ 46.9
2021	44.5
2022	44.2
2023	44.1
2024	44
2025-2029	212
Other Postretirement Plans Benefit Payments
Defined Benefit Plan Disclosure
2020	2.9
2021	2.7
2022	2.5
2023	2.2
2024	2
2025-2029	7.8
Medicare Part D Adjustments
Defined Benefit Plan Disclosure
2020	0.1
2021	0.1
2022	0.1
2023	0.1
2024	0.1
2025-2029	$ 0.2

Pension Plans and Other Benef_6

Pension Plans and Other Benefits - Other Disclosures $ in Millions	Dec. 31, 2021USD ($)
Fixed Income Securities | United States
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
Fixed Income Securities | Foreign Salaried Plans
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	80.00%
Return Seeking Investments | Foreign Salaried Plans
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	20.00%
North American Pension Plans | Minimum
Defined Benefit Plan Disclosure
The amount of estimated cash contribution to the defined benefit pension plans needed next fiscal year to meet minimum funding requirements	$ 5.6
North American Other Postretirement Benefits Plan | Minimum
Defined Benefit Plan Disclosure
The amount of estimated cash contribution to the defined benefit pension plans needed next fiscal year to meet minimum funding requirements	$ 2.9

Pension Plans and Other Benef_7

Pension Plans and Other Benefits - Plan Asset FV Measurements - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure
Fair value of asset		$ 807	$ 845.2
Fair Value Inputs Level 1
Defined Benefit Plan Disclosure
Fair value of asset		5.2	4.6
Fair Value Inputs Level 2
Defined Benefit Plan Disclosure
Fair value of asset		791.3	839.5
Fair Value Inputs Level 3
Defined Benefit Plan Disclosure
Fair value of asset		$ 10.5	$ 1.1
Debt Security, Corporate, US
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		44.00%	48.00%
US and Canada Government Debt Securities
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		49.00%	45.00%
Canadian Equity Securities
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		1.00%	0.00%
Cash And Cash Equivalents
Defined Benefit Plan Disclosure
Fair value of asset		$ 5.2	$ 4.6
Cash And Cash Equivalents | Fair Value Inputs Level 1
Defined Benefit Plan Disclosure
Fair value of asset		5.2	4.6
Cash And Cash Equivalents | Fair Value Inputs Level 2
Defined Benefit Plan Disclosure
Fair value of asset		0	0
Cash And Cash Equivalents | Fair Value Inputs Level 3
Defined Benefit Plan Disclosure
Fair value of asset		0	0
Equity Securities
Defined Benefit Plan Disclosure
Fair value of asset	[1]	71.3	198.5
Equity Securities | Fair Value Inputs Level 1
Defined Benefit Plan Disclosure
Fair value of asset	[1]	0	0
Equity Securities | Fair Value Inputs Level 2
Defined Benefit Plan Disclosure
Fair value of asset	[1]	71.3	198.5
Equity Securities | Fair Value Inputs Level 3
Defined Benefit Plan Disclosure
Fair value of asset	[1]	0	0
Fixed Income Securities
Defined Benefit Plan Disclosure
Fair value of asset	[2]	720	641
Fixed Income Securities | Fair Value Inputs Level 1
Defined Benefit Plan Disclosure
Fair value of asset	[2]	0	0
Fixed Income Securities | Fair Value Inputs Level 2
Defined Benefit Plan Disclosure
Fair value of asset	[2]	720	641
Fixed Income Securities | Fair Value Inputs Level 3
Defined Benefit Plan Disclosure
Fair value of asset	[2]	0	0
Private Equity Funds
Defined Benefit Plan Disclosure
Fair value of asset		10.5	1.1
Private Equity Funds | Fair Value Inputs Level 1
Defined Benefit Plan Disclosure
Fair value of asset		0	0
Private Equity Funds | Fair Value Inputs Level 2
Defined Benefit Plan Disclosure
Fair value of asset		0	0
Private Equity Funds | Fair Value Inputs Level 3
Defined Benefit Plan Disclosure
Fair value of asset		$ 10.5	$ 1.1
U.S. Government Bonds
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		44.00%	43.00%
Debt Security, Corporate, Non-US
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		7.00%	7.00%
[1]	This class, which includes several funds, was invested approximately 44% in U.S. equity securities, 1% in Canadian equity securities and 55% in other international equity securities as of December 31, 2021, and 43% in U.S. equity securities, 0% in Canadian equity securities and 57% in other international equity securities as of December 31, 2020.
[2]	This class, which includes several funds, was invested approximately 44% in corporate debt securities, 49% in governmental securities in the U.S. and Canada and 7% in other foreign entity debt securities as of December 31, 2021, and 48% in corporate debt securities, 45% in governmental securities in the U.S. and Canada and 7% in other foreign entity debt securities as of December 31, 2020.

Pension Plans and Other Benef_8

Pension Plans and Other Benefits - Fair Value Assumption	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
International Equity Securities
The assumptions used to determine net benefit cost were as follows:
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	55.00%	57.00%
North American Pension Plans
The assumptions used to determine benefit obligations were as follows:
Discount rate	2.84%	2.40%	3.12%
Expected return on plan assets	3.25%	3.89%	5.13%
Rate of compensation increase	3.00%	3.00%	3.00%
The assumptions used to determine net benefit cost were as follows:
Discount rate	2.44%	3.12%	4.09%
Service cost discount rate	2.64%	3.15%	4.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate	1.90%	2.83%	3.77%
Expected return on plan assets	3.89%	4.88%	5.14%
Rate of compensation increase	3.00%	3.00%	3.50%

Pension Plans and Other Benef_9

Pension Plans and Other Benefits - Defined Contribution Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Mosaic's matching rate of first tier of employee's compensation deferrals under the "Investment Plan"	100.00%
Maximum rate of first 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%
Maximum rate of second tier of deferred compensation elected by employees under the Company's "Investment Plan"	3.00%
Expense attributable to the Company's Investment Plan and Savings Plan	$ 55.8	$ 48	$ 56.4

Organization and Nature of Busi

Organization and Nature of Business	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Nature of Business	ORGANIZATION AND NATURE OF BUSINESS The Mosaic Company (“ Mosaic ,” and, with its consolidated subsidiaries, “ we ,” “ us ,” “ our ,” or the “ Company ”) produces and markets concentrated phosphate and potash crop nutrients. We conduct our business through wholly and majority owned subsidiaries and businesses in which we own less than a majority or a noncontrolling 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. We have a 75% economic interest in the Miski Mayo Phosphate Mine in Peru. These results are consolidated in the Phosphates segment. The Phosphates segment also includes our 25% interest in the Ma’aden Wa’ad Al Shamal Phosphate Company (the “ MWSPC ”), a joint venture to develop, own and operate integrated phosphate production facilities in the Kingdom of Saudi Arabia. We market approximately 25% of the MWSPC phosphate production. We recognize our equity in the net earnings or losses relating to MWSPC on a one-quarter lag in our Consolidated Statements of Earnings. • 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. • Our Mosaic Fertilizantes business segment includes five Brazilian phosphate rock mines, four phosphate chemical plants and a potash mine in Brazil. The segment also includes our distribution business in South America, which consists of sales offices, crop nutrient blending and bagging facilities, port terminals and warehouses in Brazil and Paraguay. We also have a majority interest in Fospar S.A., which owns and operates a single superphosphate granulation plant and a deep-water crop nutrition port and throughput warehouse terminal facility in Brazil. Intersegment eliminations, unrealized mark-to-market gains/losses on derivatives, debt expenses, Streamsong Resort ® results of operations, and the results of the China and India distribution businesses are included within Corporate, Eliminations and Other.

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Operating and Finance Leases [Text Block]	LEASES Leasing Activity We have operating and finance leases for heavy mobile equipment, railcars, fleet vehicles, field and plant equipment, river and cross-gulf vessels, corporate offices, land, and computer equipment. Our leases have remaining lease terms of 1 year to 29 years, some of which include options to extend the lease for up to 10 years and some of which include options to terminate the lease within 1 year. Supplemental balance sheet information related to leases as of December 31, 2021 and December 31, 2020 is as follows: December 31, Type of Lease Asset or Liability 2021 2020 Balance Sheet Classification (in millions) Operating Leases Right-of-use assets $ 120.2 $ 173.1 Other assets Lease liabilities: Short-term 59.7 64.0 Accrued liabilities Long-term 64.3 109.6 Other noncurrent liabilities Total $ 124.0 $ 173.6 Finance Leases Right-of-use assets: Gross assets $ 459.1 $ 457.9 Less: accumulated depreciation 122.8 89.3 Net assets $ 336.3 $ 368.6 Property, plant and equipment, net Lease liabilities: Short-term $ 41.2 $ 49.9 Current maturities of long-term debt Long-term 171.8 294.6 Long-term debt, less current maturities Total $ 213.0 $ 344.5 Lease expense is generally included within cost of goods sold and selling, general and administrative expenses, except for interest on lease liabilities, which is recorded within net interest. The components of lease expense were as follows: December 31, (in millions) 2021 2020 2019 Operating lease cost $ 78.8 $ 81.7 $ 98.4 Finance lease cost: Amortization of right-of-use assets 40.6 37.7 28.3 Interest on lease liabilities 6.3 13.3 15.2 Short-term lease cost 3.1 3.1 10.5 Variable lease cost 19.2 21.8 21.5 Total lease cost $ 148.0 $ 157.6 $ 173.9 Rental expense for 2021, 2020 and 2019 was $211.8 million, $226.9 million and $249.1 million, respectively. Supplemental cash flow information related to leases was as follows: December 31, (In millions) 2021 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 78.8 $ 96.6 $ 107.9 Operating cash flows from finance leases 6.3 8.4 10.7 Financing cash flows from finance leases 142.5 46.9 41.3 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 18.4 $ 22.4 $ 56.0 Finance leases 8.9 36.4 88.2 Other information related to leases was as follows: December 31, 2021 Weighted Average Remaining Lease Term Operating leases 4.3 years Finance leases 3.1 years Weighted Average Discount Rate Operating leases 4.8 % Finance leases 2.4 % Future lease payments under non-cancellable leases recorded as of December 31, 2021, were as follows: Operating Leases Finance Leases (in millions) 2022 $ 63.3 $ 45.4 2023 29.7 70.9 2024 18.6 86.9 2025 7.1 4.8 2026 3.1 4.0 Thereafter 17.7 10.8 Total future lease payments $ 139.5 $ 222.8 Less imputed interest (15.5) (9.8) Total $ 124.0 $ 213.0

Revenue

Revenue	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUE On January 1, 2018, we adopted ASC Topic 606, “ Revenue from Contracts with Customers ” and related amendments ( “ new revenue standard ” ) using the modified retrospective method applied to those revenue contracts which were not completed as of January 1, 2018. Information regarding our revenue recognition policy is included in Note 2 of our Notes to Consolidated Financial Statements. Under the new revenue standard, the timing of revenue recognition is accelerated for certain sales arrangements due to the emphasis on transfer of control rather than risks and rewards. Certain sales where revenue was previously deferred until risk was fully assumed by the customer are now recognized when the product is shipped. The adoption of the new revenue standard did not have a significant impact on our consolidated financial statements.

Other Financial Statement Data

Other Financial Statement Data	12 Months Ended
	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Other Financial Statement Data	OTHER FINANCIAL STATEMENT DATA The following provides additional information concerning selected balance sheet accounts: December 31, (in millions) 2021 2020 Receivables Trade - External $ 954.6 $ 632.8 Trade - Affiliate 390.1 99.7 Non-trade 187.7 149.0 1,532.4 881.5 Less allowance for doubtful accounts 0.5 0.4 $ 1,531.9 $ 881.1 Inventories Raw materials $ 296.6 $ 92.1 Work in process 741.1 634.5 Finished goods 1,534.3 868.2 Final price deferred (a) 31.4 23.0 Operating materials and supplies 138.0 121.4 $ 2,741.4 $ 1,739.2 Other current assets Income and other taxes receivable $ 126.1 $ 181.4 Prepaid expenses 107.3 80.4 Other 49.1 65.1 $ 282.5 $ 326.9 Other assets Restricted cash $ 8.5 $ 12.3 MRO inventory 144.7 137.7 Marketable securities held in trust - restricted 731.5 734.3 Operating lease right-of-use assets 120.2 173.1 Indemnification asset 21.0 23.0 Long-term receivable 41.5 52.6 Other 307.3 255.8 $ 1,374.7 $ 1,388.8 December 31, (in millions) 2021 2020 Accrued liabilities Accrued dividends $ 43.6 $ 20.4 Payroll and employee benefits 235.9 195.5 Asset retirement obligations 222.4 190.2 Customer prepayments (b) 437.7 287.6 Accrued income and other taxes 184.3 83.1 Operating lease obligation 59.7 64.0 Servicing liability 81.1 — Other 618.9 392.3 $ 1,883.6 $ 1,233.1 Other noncurrent liabilities Asset retirement obligations $ 1,526.9 $ 1,203.7 Operating lease obligation 64.3 109.6 Accrued pension and postretirement benefits 114.4 158.5 Unrecognized tax benefits 156.6 46.4 Other 239.9 235.3 $ 2,102.1 $ 1,753.5 ______________________________ (a) Final price deferred is product that has shipped to customers, but we retain control and do not recognize revenue until a sales contract has been agreed to with the customer. (b) The timing of recognition of revenue related to our performance obligations may be different than the timing of collection of cash related to those performance obligations. Specifically, we collect prepayments from certain customers in Brazil. In addition, cash collection from Canpotex may occur prior to delivery of product to the end customer. We generally satisfy our contractual liabilities within one quarter of incurring the liability. Interest expense, net was comprised of the following in 2021, 2020 and 2019: Years Ended December 31, (in millions) 2021 2020 2019 Interest income $ 25.2 $ 33.5 $ 33.1 Less interest expense 194.3 214.1 216.0 Interest expense, net $ (169.1) $ (180.6) $ (182.9)

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property Plant And Equipment	PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment consist of the following: December 31, (in millions) 2021 2020 Land $ 341.6 $ 325.7 Mineral properties and rights 5,791.3 5,035.2 Buildings and leasehold improvements 3,452.5 3,306.2 Machinery and equipment 9,893.6 9,846.9 Construction in-progress 1,234.4 1,447.1 20,713.4 19,961.1 Less: accumulated depreciation and depletion 8,238.1 8,106.8 $ 12,475.3 $ 11,854.3 Depreciation and depletion expense was $811.8 million, $846.4 million and $877.6 million for 2021, 2020 and 2019, respectively. Capitalized interest on major construction projects was $30.1 million, $33.3 million and $28.5 million for 2021, 2020 and 2019, respectively.

Investments in Non-consolidated

Investments in Non-consolidated Companies	12 Months Ended
	Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]
Investments in non-consolidated companies	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. The cash flow presentation of dividends received from equity method investees is determined by evaluation of the facts, circumstances and nature of the distribution. A summary of our equity-method investments, which were in operation as of December 31, 2021, is as follows: Entity Economic Interest Gulf Sulphur Services LTD., LLLP 50.0 % River Bend Ag, LLC 50.0 % IFC S.A. 45.0 % MWSPC 25.0 % Canpotex* 36.2 % * In 2021 our realized percentage was 33% as a result of lower shipments due to the early closure of the K1 and K2 mine shafts at Esterhazy. The summarized financial information shown below includes all non-consolidated companies carried on the equity method. Years Ended December 31, (in millions) 2021 2020 2019 Net sales $ 4,758.2 $ 3,463.2 $ 4,058.5 Net earnings (loss) 70.1 (405.3) (215.0) Mosaic’s share of equity in net earnings (loss) 7.8 (93.8) (59.4) Total assets 10,685.6 8,944.4 9,682.5 Total liabilities 8,864.7 7,184.9 7,512.7 Mosaic’s share of equity in net assets 466.9 452.5 554.7 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 mainly due to the July 1, 2016, equity contribution of $120 million we made to MWSPC, representing the remaining liability for our portion of mineral rights value transferred to MWSPC from Saudi Arabian Mining Company (“ Ma ’ aden ”) . As of December 31, 2021, MWSPC represented 70% of the total assets and 65% of the total liabilities in the table above. MWSPC commenced ammonia operations in late 2016 and, on December 1, 2018, commenced commercial operations of its DAP plant, thereby bringing the entire project to the commercial production phase. In 2021, 2020 and 2019 our share of equity in net earnings (loss) was $5.0 million, $(97.3) million, and $(62.1) million, respectively. MWSPC owns and operates a mine and two chemical complexes that produce phosphate fertilizers and other downstream phosphates products in the Kingdom of Saudi Arabia. The cost to develop and construct the integrated phosphate production facilities (the “ Project ”) was approximately $8.0 billion, which has been funded primarily through investments by us, Ma’aden and SABIC (together, the “ Project Investors ”), and through borrowing arrangements and other external project financing facilities (“ Funding Facilities ”). The production facilities are expected to have a capacity of approximately 3.0 million tonnes of finished product per year when fully operational. We market approximately 25% of the phosphate production of the joint venture. On June 30, 2014, MWSPC entered into Funding Facilities with a consortium of 20 financial institutions for a total amount of approximately $5.0 billion. Also on June 30, 2014, in support of the Funding Facilities, we, together with Ma’aden and SABIC, agreed to provide our respective proportionate shares of the funding necessary for MWSPC by: a. Contributing equity or making shareholder subordinated loans of up to $2.4 billion to fund project costs to complete and commission the Project (the “ Equity Commitments ”). b. Through the earlier of Project completion or June 30, 2020, contributing equity, making shareholder subordinated loans or providing bank subordinated loans, to fund cost overruns on the Project (the “ Additional Cost Overrun Commitment ”). c. Through the earlier of Project completion or June 30, 2020, contributing equity, making shareholder loans or providing bank subordinated loans to fund scheduled debt service (excluding accelerated amounts) payable under the Funding Facilities and certain other amounts (such commitment, the “ DSU Commitment ” and such scheduled debt service and other amounts, “ Scheduled Debt Service ”). d. From the earlier of the Project completion date or June 30, 2020, to the extent there is a shortfall in the amounts available to pay Scheduled Debt Service, depositing for the payment of Scheduled Debt Service an amount up to the respective amount of certain shareholder tax amounts, and severance fees under MWSPC’s mining license, paid within the prior 36 months by MWSPC on behalf of the Project Investors, if any. In January 2016, MWSPC received approval from the Saudi Industrial Development Fund (“ SIDF ”) for loans in the total amount of approximately $1.1 billion for the Project, subject to the finalization of definitive agreements. In 2017, MWSPC entered into definitive agreements with SIDF to draw up to $560 million from the total SIDF-approved amount (the “ SIDF Loans ”). In September of 2018, we received communication that SIDF agreed to waive Mosaic’s parent guarantee. MWSPC received approval to access the remaining SIDF facility of $506 million which was subsequently drawn in December 2018. On June 20, 2020, MWSPC refinanced its commercial loans while retaining the SIDF loans. The refinancing extended debt repayment to 2037 and deferred principal payments until June 30, 2022. The refinancing removes recourse to Mosaic by all lenders to MWSPC (DSU Commitment and Scheduled Debt Service). Mosaic’s contractual commitment to make future cash contributions to MWSPC was also eliminated. As of December 31, 2021, our cash investment was $770 million. We did not make any contributions in 2021 and do not expect future contributions will be needed. Canpotex is a Saskatchewan export association used by two Canadian potash producers to market, sell and distribute Canadian potash products outside of Canada and the U.S. to unrelated third party customers at market prices. It operates as a break-even entity. We have concluded that the sales to Canpotex are not at arm’s-length, due to the unique pricing and payment structure and financial obligations of the shareholders. Therefore, the full profit on sales to Canpotex are eliminated until Canpotex no longer has control of the related inventory and has sold it to an unrelated third party customer. We eliminate the intra-entity profit with Canpotex at the end of each reporting period and present that profit elimination by reversing revenue and cost of goods sold for the inventory still remaining at Canpotex. Any equity earnings or loss, which have historically been insignificant, are recorded in the equity in net earnings or loss line within the Consolidated Statement of Earnings.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
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 on a quantitative basis at the reporting unit level on an annual basis or upon the occurrence of events that may indicate possible impairment. Impairment is measured as the excess carrying value over the fair value of goodwill. The changes in the carrying amount of goodwill, by reporting unit, as of December 31, 2021 and 2020, are as follows: (in millions) Potash Mosaic Fertilizantes Corporate, Eliminations and Other Total Balance as of December 31, 2019 $ 1,039.8 $ 105.0 $ 12.1 $ 1,156.9 Foreign currency translation 23.4 (7.3) — 16.1 Balance as of December 31, 2020 $ 1,063.2 $ 97.7 $ 12.1 $ 1,173.0 Foreign currency translation 1.0 (1.8) — (0.8) Balance as of December 31, 2021 $ 1,064.2 $ 95.9 $ 12.1 $ 1,172.2 As of October 31, 2021, we performed our annual quantitative assessment. In performing our assessment, we estimated the fair value of each of our reporting units using the income approach, also known as the discounted cash flow (“ DCF ”) method. The income approach utilized the present value of cash flows to estimate fair value. The future cash flows for our reporting units were projected based on our estimates, at that time, for revenue, operating income and other factors (such as working capital and capital expenditures for each reporting unit). To determine if the fair value of each of our reporting units with goodwill exceeded its carrying value, we assumed sales volume growth rates based on our long-term expectations, our internal selling prices and projected raw material prices for years one through five, which were anchored in projections from CRU International Limited (“ CRU ”), an independent third party data source. Selling prices and raw material prices for years six and beyond were based on anticipated market growth and long-term CRU outlooks. The discount rates used in our DCF method were based on a weighted-average cost of capital (“ WACC ”), determined from relevant market comparisons. A terminal value growth rate of 2% was applied to all years thereafter for the projected period and reflected our estimate of stable growth. We then calculated a present value of the respective cash flows for each reporting unit to arrive at an estimate of fair value under the income approach. Finally, we compared our estimates of fair values for our reporting units, to our October 31, 2021 total public market capitalization, based on our common stock price at that date. In making this assessment, we considered, among other things, expectations of projected net sales and cash flows, assumptions impacting the WACC, changes in our stock price and changes in the carrying values of our reporting units with goodwill. We also considered overall business conditions. The Potash, Mosaic Fertilizantes and Corporate, Eliminations and Other reporting units were evaluated and not considered at risk of goodwill impairment at October 31, 2021. As of December 31, 2021, $3.0 million of goodwill was tax deductible.

Financing Arrangements

Financing Arrangements	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Financing Arrangements	FINANCING ARRANGEMENTS Mosaic Credit Facility On August 19, 2021, we entered into a new committed unsecured five-year credit facility of up to $2.5 billion (the “ Mosaic Credit Facility ”), comprised of a $2.5 billion revolving facility, with a maturity date of August 19, 2026, which is intended to serve as our primary senior unsecured bank credit facility. The Mosaic Credit Facility increased and extended our prior unsecured revolving credit facility of up to $2.2 billion (the “ Prior Credit Facility ”), maturing on November 18, 2022. The Mosaic Credit Facility has cross-default provisions that, in general, provide that a failure to pay principal or interest under, or any other amount payable under, any indebtedness with outstanding principal amount of $100 million or more, 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 ratio of Consolidated Indebtedness, which has been redefined to exclude unrestricted cash and cash equivalents, to Consolidated Capitalization Ratio (as defined) of no greater than 0.65 to 1.0 as well as a minimum Interest Coverage Ratio (as defined) of not less than 3.0 to 1.0. We were in compliance with these ratios as of December 31, 2021. The Mosaic Credit Facility also contains other events of default and covenants that limit various matters. These provisions include limitations on indebtedness, liens, investments and acquisitions (other than capital expenditures), certain mergers, certain sales of assets and other matters customary for credit facilities of this nature. As of December 31, 2021, we had outstanding letters of credit that utilized a portion of the amount available for revolving loans under the Mosaic Credit Facility of $10.9 million. At December 31, 2020, we had outstanding letters of credit of $12.4 million. The net available borrowings for revolving loans under the Mosaic Credit Facility were approximately $2.49 billion as of December 31, 2021. Unused commitment fees accrued at an average annual rate of 0.15% under the new Mosaic Credit Facility during 2021, decreasing from the average annual rate of 0.40% under the Prior Credit Facility. Unused commitment fees generated expenses of $7.0 million during 2021. As of December 2020 and 2019, unused commitment fees accrued at an average rate of 0.40% and 0.20%, generating expenses of $6.0 million and $4.0 million. 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 December 31, 2021, working capital financing arrangements and various other short-term borrowings related to our international operations in India, China and Brazil. These other short-term borrowings outstanding were $302.8 million and $0.1 million as of December 31, 2021 and 2020, respectively. On January 7, 2020, we entered into an inventory financing arrangement to sell up to $400 million of certain inventory for cash and subsequently to repurchase the inventory at an agreed upon price and time in the future, not to exceed 180 days. Under the terms of the agreement, we may borrow up to 90% of the value of the inventory. It is later repurchased by Mosaic at the original sale price plus interest and any transaction costs. As of December 31, 2021, we had sold $302.7 million of inventory under this arrangement. Subsequent to year-end in February 2022, the borrowing capacity under this agreement was increased to $625.0 million. We have a Receivable Purchasing Agreement (“ RPA ”), with a bank whereby, from time-to-time, we sell certain receivables. The purchase price of the receivable sold under the RPA is the face value of the receivable less an agreed upon discount. In January 2021, we entered into a First Amendment to the RPA. This amendment made certain adjustments so that the receivables sold under the RPA are accounted for as a true sale. Upon sale, these receivables are removed from the Consolidated Balance Sheets. Cash received is presented as cash provided by operating activities in the Consolidated Statements of Cash Flows. Prior to the amendment, we recorded the purchase price as short-term debt, and recognized interest expense by accreting the liability through the due date of the underlying receivables. Subsequent to year-end in February 2022, the RPA was amended to increase the borrowing capacity under the agreement from $250 million to $400 million. The Company sold approximately $589.7 million and $302.0 million as of December 31, 2021 and 2020, respectively, of accounts receivable under this arrangement. Discounts on sold receivables were not material for any period presented. Following the sale to the bank, we continue to service the collection of the receivable on behalf of the bank without further consideration. As of December 31, 2021, $81.1 million had been collected but not yet remitted to the bank. This amount is classified in accrued liabilities on the Consolidated Balance Sheets. Cash collected and remitted are included in financing activities in the Consolidated Statements of Cash Flows. We had additional outstanding bilateral letters of credit of $54.7 million as of December 31, 2021, which includes $50.0 million as required by the 2015 Consent Decrees as described further in Note 13 of our Consolidated Financial Statements. Long-Term Debt, including Current Maturities On November 13, 2017, we issued new senior notes consisting of $550 million aggregate principal amount of 3.250% senior notes due 2022 and $700 million aggregate principal amount of 4.050% senior notes due 2027 (collectively, the “ Senior Notes of 2017 ”). We have additional senior notes outstanding, consisting of $900 million aggregate principal amount of 4.25% senior notes due 2023, $500 million aggregate principal amount of 5.45% senior notes due 2033 and $600 million aggregate principal amount of 5.625% senior notes due 2043 (collectively, the “ Senior Notes of 2013 ”); and $300 million aggregate principal amount of 4.875% senior notes due 2041 (collectively, the “ Senior Notes of 2011 ”). In 2021, we prepaid the outstanding balance of $450 million on our 3.75% senior notes, due November 15, 2021, without premium or penalty. The Senior Notes of 2011, the Senior Notes of 2013 and the Senior Notes of 2017 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 these 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. A debenture issued by Mosaic Global Holdings, Inc., one of our consolidated subsidiaries, due in 2028 (the “ 2028 Debenture ”), is outstanding as of December 31, 2021, with a balance of $147.1 million. The indenture governing the 2028 Debenture 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 2028 Debenture are guaranteed by the Company and several of its subsidiaries. Long-term debt primarily consists of unsecured notes, term loans, finance leases, unsecured debentures and secured notes. Long-term debt as of December 31, 2021 and 2020, respectively, consisted of the following: (in millions) December 31, 2021 December 31, 2021 Maturity Date December 31, 2021 Combination Fair Discount on Notes Issuance December 31, 2021 December 31, 2020 Combination Fair Discount on Notes Issuance December 31, 2020 Unsecured notes 3.25% - 5.18% 2022- $ 3,550.0 $ — $ (6.6) $ 3,543.4 $ 4,000.0 $ — $ (5.3) $ 3,994.7 Unsecured debentures 7.30% 7.19% 2028 147.1 0.7 — 147.8 147.1 0.9 — 148.0 Finance leases 0.60% - 2.39% 2022- 213.0 — — 213.0 344.5 — — 344.5 Other (a) 6.53% - 4.08% 2022- 64.9 9.7 — 74.6 78.8 12.0 — 90.8 Total long-term debt 3,975.0 10.4 (6.6) 3,978.8 4,570.4 12.9 (5.3) 4,578.0 Less current portion 594.8 2.3 (0.5) 596.6 502.9 2.3 (1.0) 504.2 Total long-term debt, less current maturities $ 3,380.2 $ 8.1 $ (6.1) $ 3,382.2 $ 4,067.5 $ 10.6 $ (4.3) $ 4,073.8 ______________________________ (a) Includes deferred financing fees related to our long term debt. Scheduled maturities of long-term debt are as follows for the periods ending December 31: (in millions) 2022 $ 596.6 2023 996.2 2024 103.1 2025 15.7 2026 15.7 Thereafter 2,251.5 Total $ 3,978.8 Structured Accounts Payable Arrangements In Brazil, we finance some of our potash-based fertilizer, sulfur, ammonia and other raw material product purchases through third-party contractual arrangements. These arrangements provide that the third-party intermediary advance the amount of the scheduled payment to the vendor, less an appropriate discount, at a scheduled payment date and Mosaic makes payment to the third-party intermediary at a later date, stipulated in accordance with the commercial terms negotiated. At December 31, 2021 and 2020, these structured accounts payable arrangements were $743.7 million and $640.0 million, respectively.

Marketable Securities Held in T

Marketable Securities Held in Trusts	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Marketable Securities Held in Trusts	MARKETABLE SECURITIES HELD IN TRUSTS In August 2016, Mosaic deposited $630 million into two trust funds (together, the “ RCRA Trusts ”) created to provide additional financial assurance in the form of cash for the estimated costs (“ Gypstack Closure Costs ”) of closure and long-term care of our Florida and Louisiana phosphogypsum management systems (“ Gypstacks ”), as described further in Note 13 of our Notes to Consolidated Financial Statements. Our actual Gypstack Closure Costs are generally expected to be paid by us in the normal course of our Phosphates business; however, funds held in each of the RCRA Trusts can be drawn by the applicable governmental authority in the event we cannot perform our closure and long-term care obligations. When our estimated Gypstack Closure Costs with respect to the facilities associated with a RCRA Trust are sufficiently lower than the amount on deposit in that RCRA Trust, we have the right to request that the excess funds be released to us. The same is true for the RCRA Trust balance remaining after the completion of our obligations, which will be performed over a period that may not end until three decades or more after a Gypstack has been closed. The investments held by the RCRA Trusts are managed by independent investment managers with discretion to buy, sell, and invest pursuant to the objectives and standards set forth in the related trust agreements. Amounts reserved to be held or held in the RCRA Trusts (including losses or reinvested earnings) are included in other assets on our Consolidated Balance Sheets. The RCRA Trusts hold investments, which are restricted from our general use, in marketable debt securities classified as available-for-sale and are carried at fair value. As a result, unrealized gains and losses are included in other comprehensive income until realized, unless it is determined that the entire unamortized cost basis of the investment is not expected to be recovered. A credit loss would then be recognized in operations for the amount of the expected credit loss. As of December 31, 2021, we expect to recover our amortized cost on all available-for-sale securities and have not established an allowance for credit loss.. We review the fair value hierarchy classification on a quarterly basis. Changes in the ability to observe valuation inputs may result in a reclassification of levels for certain securities within the fair value hierarchy. We determine the fair market values of our available-for-sale securities and certain other assets based on the fair value hierarchy described below: 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. The estimated fair value of the investments in the RCRA Trusts as of December 31, 2021 and December 31, 2020 are as follows: December 31, 2021 (in millions) Amortized Gross Gross Fair Level 1 Cash and cash equivalents $ 8.1 $ — $ — $ 8.1 Level 2 Corporate debt securities 198.8 5.6 (0.9) 203.5 Municipal bonds 198.1 6.5 (0.5) 204.1 U.S. government bonds 305.3 — (6.1) 299.2 Total $ 710.3 $ 12.1 $ (7.5) $ 714.9 December 31, 2020 (in millions) Amortized Gross Gross Fair Level 1 Cash and cash equivalents $ 11.8 $ — $ — $ 11.8 Level 2 Corporate debt securities 193.3 14.0 — 207.3 Municipal bonds 190.5 8.8 (0.3) 199.0 U.S. government bonds 300.7 4.7 (0.1) 305.3 Total $ 696.3 $ 27.5 $ (0.4) $ 723.4 The following tables show gross unrealized losses and fair values of the RCRA Trusts’ available-for-sale securities that have been in a continuous unrealized loss position for which an allowance for credit losses has not been recorded as of December 31, 2021 and December 31, 2020. December 31, 2021 December 31, 2020 Securities that have been in a continuous loss position for less than 12 months (in millions) : Fair Gross Fair Gross Corporate debt securities $ 67.1 $ (0.8) $ 1.5 $ — Municipal bonds 39.9 (0.4) 16.0 (0.2) U.S. government bonds 152.2 (2.5) 120.3 (0.1) Total $ 259.2 $ (3.7) $ 137.8 $ (0.3) December 31, 2021 December 31, 2020 Securities that have been in a continuous loss position for more than 12 months (in millions) : Fair Gross Fair Gross Corporate debt securities $ 3.6 $ (0.1) $ — $ — Municipal bonds 4.5 (0.1) 4.6 (0.1) U.S. government bonds 143.4 (3.6) — — Total $ 151.5 $ (3.8) $ 4.6 $ (0.1) The following table summarizes the balance by contractual maturity of the available-for-sale debt securities invested by the RCRA Trusts as of December 31, 2021. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations before the underlying contracts mature. (in millions) December 31, 2021 Due in one year or less $ 26.4 Due after one year through five years 351.9 Due after five years through ten years 293.9 Due after ten years 34.6 Total debt securities $ 706.8 For the year ended December 31, 2021, realized gains and (losses) were $5.8 million and $(3.4) million, respectively. For the year ended December 31, 2020, realized gains and (losses) were $17.7 million and $(1.5) million, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
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. The provision for income taxes for 2021, 2020 and 2019, consisted of the following: Years Ended December 31, (in millions) 2021 2020 2019 Current: Federal $ (12.7) $ (22.0) $ (75.5) State 5.6 1.3 (5.2) Non-U.S. 386.9 114.4 119.1 Total current 379.8 93.7 38.4 Noncurrent: Federal $ — $ — $ — State — — — Non-U.S. 110.0 3.2 — Total noncurrent 110.0 3.2 — Deferred: Federal $ 141.9 $ (66.7) $ (194.8) State 21.4 (12.9) (6.7) Non-U.S. (55.4) (595.8) (61.6) Total deferred 107.9 (675.4) (263.1) Provision for (benefit from) income taxes $ 597.7 $ (578.5) $ (224.7) 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: Years Ended December 31, (in millions) 2021 2020 2019 U.S.earnings (loss) $ 900.1 $ (449.0) $ (1,096.2) Non-U.S. earnings 1,324.7 629.9 (159.9) Earnings (loss) from consolidated companies before income taxes $ 2,224.8 $ 180.9 $ (1,256.1) Computed tax at the U.S. federal statutory rate 21.0 % 21.0 % 21.0 % State and local income taxes, net of federal income tax benefit 1.2 % (7.0) % 2.6 % Percentage depletion in excess of basis (1.1) % (10.3) % 2.5 % Impact of non-U.S. earnings 6.3 % 42.1 % 5.3 % Change in valuation allowance (0.3) % (330.0) % (3.1) % Phosphates goodwill impairment — % — % (5.0) % Non-U.S. incentives (5.7) % (35.6) % — % Other items (none in excess of 5% of computed tax) 5.5 % — % (5.4) % Effective tax rate 26.9 % (319.8) % 17.9 % 2021 Effective Tax Rate In the year ended December 31, 2021, there were two items impacting the effective tax rate: 1) items attributable to ordinary business operations during the year, and 2) other items specific to the period, including the Esterhazy mine closure costs. The tax impact of our ordinary business operations is affected by the mix of earnings across jurisdictions in which we operate, by a benefit associated with depletion, by a benefit associated with non-U.S. incentives, changes in valuation allowances and by the impact of certain entities being taxed in both their foreign jurisdiction and the U.S., including foreign tax credits for various taxes incurred. Tax expense specific to the period included a net benefit of $0.6 million. The net expense relates to the following: $23.9 million related to true-up of estimates primarily related to our U.S. tax return and $20.4 million related to an increase in non-U.S. reserves. The tax expenses are partially offset by net tax benefits related to $43.7 million of Esterhazy mine closure costs and $1.2 million related to a benefit for withholding taxes related to undistributed earnings and other miscellaneous tax expenses. 2020 Effective Tax Rate In the year ended December 31, 2020, there were two items impacting the effective tax rate: 1) items attributable to ordinary business operations during the year, and 2) other items specific to the period, including impacts recorded due to the Coronavirus Aid, Relief, and Economic Security Act (the “ CARES Act ” ). The CARES Act provides various tax relief measures to taxpayers impacted by the coronavirus. The tax impact of our ordinary business operations is affected by the mix of earnings across jurisdictions in which we operate, by a benefit associated with depletion, by a benefit associated with non-U.S. incentives, changes in valuation allowances and by the impact of certain entities being taxed in both their foreign jurisdiction and the U.S., including foreign tax credits for various taxes incurred. Tax expense specific to the period included a net benefit of $609.0 million. The net benefit relates to the following: $582.6 million for changes to valuation allowances in the U.S. and foreign jurisdictions, $23.6 million related to certain provisions of the CARES Act, $5.5 million related to release of the sequestration on AMT and miscellaneous tax expense of $2.7 million. The change to the valuation allowance in Brazil related to the Acquired Business. As of December 31, 2020, the Acquired Business has achieved cumulative income and therefore we were able to rely on future forecasts of taxable income which support realization of its deferred tax assets. 2019 Effective Tax Rate In the year ended December 31, 2019, there were two items impacting the effective tax rate: 1) items attributable to ordinary business operations during the year, and 2) other items specific to the period, including impacts recorded due to the U.S. Tax Cuts and Jobs Act (the “ Act ” ). The tax impact of our ordinary business operations is impacted by the mix of earnings across jurisdictions in which we operate, by a benefit associated with depletion, changes in valuation allowances and by the impact of certain entities being taxed in both their foreign jurisdiction and the U.S., including foreign tax credits for various taxes incurred. Tax expense specific to the period included a benefit of $355.6 million. The benefit relates to various notable items, which resulted in the following tax benefits: $263.4 million related to the indefinite idling of the Colonsay mine, $81.0 million related to the Plant City closure costs, and $79.6 million related to the phosphates goodwill impairment. These tax benefits are partially offset by tax expense of: $21.2 million for changes in certain provisions of the Act, $15.9 million for valuation allowances in the U.S. and foreign jurisdictions, $14.0 million related to state tax rate changes, $12.5 million related to changes in estimates related to prior years (including changes in certain provisions of the Act), and miscellaneous tax expense of $4.8 million. The tax expense of $21.2 million related to certain provisions of the Act and is the reversal of the benefit recorded in December 31, 2018 that pertained to the one-time “deemed” repatriation. Deferred Tax Liabilities and Assets Significant components of our deferred tax liabilities and assets as of December 31 were as follows: December 31, (in millions) 2021 2020 Deferred tax liabilities: Depreciation and amortization $ 456.2 $ 232.5 Depletion 430.1 527.0 Partnership tax basis differences 66.3 69.0 Undistributed earnings of non-U.S. subsidiaries — 3.8 Other liabilities 39.1 32.5 Total deferred tax liabilities $ 991.7 $ 864.8 Deferred tax assets: Deferred revenue $ — $ 62.4 Capital loss carryforwards — 0.1 Foreign tax credit carryforwards 775.1 628.6 Net operating loss carryforwards 232.3 321.8 Pension plans and other benefits 19.8 34.2 Asset retirement obligations 337.3 262.9 Disallowed interest expense under §163(j) 31.6 68.8 Other assets 351.2 287.6 Subtotal 1,747.3 1,666.4 Valuation allowance 774.7 683.0 Net deferred tax assets 972.6 983.4 Net deferred tax liabilities $ (19.1) $ 118.6 We have certain non-U.S. entities that are taxed in both their local jurisdiction and the U.S. As a result, we have deferred tax balances for both jurisdictions. As of December 31, 2021 and 2020, these non-U.S. deferred taxes are offset by approximately $185.1 million and $191.0 million, respectively, of anticipated foreign tax credits included within our depreciation and depletion components of deferred tax liabilities above. Due to the Act, we have recorded a valuation allowance against the anticipated foreign tax credits of $229.6 million and $235.5 million for December 31, 2021 and 2020, respectively. Tax Carryforwards As of December 31, 2021, we had estimated carryforwards for tax purposes as follows: net operating losses of $1.5 billion, foreign tax credits of $775.1 million and $3.9 million of non-U.S. business credits. These carryforward benefits may be subject to limitations imposed by the Internal Revenue Code, and in certain cases, provisions of foreign law. Approximately $507.6 million 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 majority of the remaining net operating loss carryforwards relate to U.S. federal and certain U.S. states and can be carried forward for 20 years. Of the $775.1 million of foreign tax credits, approximately $33.3 million have an expiration date of 2023, approximately $332.7 million have an expiration date of 2026, approximately $20.2 million have an expiration date of 2029, and approximately $14.6 million have an expiration date of 2030. The realization of our foreign tax credit carryforwards is dependent on market conditions, tax law changes, and other business outcomes including our ability to generate certain types of taxable income in the future. Due to current business operations and future forecasts, the Company has determined that no valuation allowance is required on its general basket foreign tax credits. As a result of changes in U.S. tax law due to the Act, the Company valuation allowances recorded against its branch basket foreign tax credits of $364.7 million as of December 31, 2021. As of December 31, 2021, we have not recognized a deferred tax liability for un-remitted earnings of approximately $2.3 billion from certain foreign operations because we believe our subsidiaries have invested the undistributed earnings indefinitely, or the earnings will be remitted in a tax-neutral transaction. It is not practicable for us to determine the amount of unrecognized deferred tax liability on these reinvested earnings. As part of the accounting for the Act, we recorded local country withholding taxes related to certain entities from which we began repatriating undistributed earnings and will continue to record local country withholding taxes, including foreign exchange impacts, on all future earnings. Valuation Allowance 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. 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. 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. 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. For the year ended December 31, 2021, the valuation allowance increased by $91.7 million, of which a $111.2 million increase related to changes in the valuation allowance to U.S. branch foreign tax credits . These increases to the valuation allowance were partially offset by a decrease of $13.9 million related to changes in valuation allowances and currency translation in Brazil, $2.4 million decrease to net operating losses for certain U.S. states, and $3.4 million changes in valuation allowances in other foreign jurisdictions. For the year ended December 31, 2020, the valuation allowance decreased by $774.1 million, of which a $763.5 million decrease related to changes in valuation allowances and currency translation in Brazil, $3.5 million related to net operating losses for certain U.S. states and $32.2 million related to our conclusion that we are more likely than not to use attributes at other foreign jurisdictions. These decreases to the valuation allowance were partially offset by the following increases: $24.1 million increase related to U.S. branch foreign tax credits and $0.9 million related to net operating losses in Peru. For the year ended December 31, 2019, the valuation allowance decreased by $73.4 million, of which a $48.0 million decrease related to changes in valuation allowances and currency translation in Brazil, and a $49.8 million decrease related to U.S. branch foreign tax credits. These decreases to the valuation allowance were offset by the following increases: $6.8 million related to net operating losses for certain U.S. states, $8.3 million related to net operating losses in Peru, and $9.2 million related to our conclusion that we are not more likely than not to use attributes at other foreign jurisdictions. Changes to our income tax valuation allowance were as follows: Years Ended December 31, (in millions) 2021 2020 2019 Income tax valuation allowance, related to deferred income taxes Balance at beginning of period $ 683.0 $ 1,457.10 $ 1,530.5 Charges or (reductions) to costs and expenses 91.7 (774.1) (73.4) Balance at end of period $ 774.7 $ 683.0 $ 1,457.1 Uncertain Tax Positions 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. As of December 31, 2021, we had $124.6 million of gross uncertain tax positions. If recognized, the benefit to our effective tax rate in future periods would be approximately $48.0 million of that amount. During 2021, we recorded net increases in our uncertain tax positions of $87.7 million related to certain U.S. and non-U.S. tax matters, of which $3.0 million impacted the effective tax rate. This increase was offset by items not included in gross uncertain tax positions. Based upon the information available as of December 31, 2021, we expect to reach an agreement on $96.5 million of the unrecognized tax benefits in the next twelve months. Any other possible changes cannot reasonably be estimated as of December 31, 2021. A summary of gross unrecognized tax benefit activity is as follows: Years Ended December 31, (in millions) 2021 2020 2019 Gross unrecognized tax benefits, beginning of period $ 36.9 $ 39.5 $ 38.1 Gross increases: Prior period tax positions 84.7 — — Current period tax positions 3.0 2.8 5.1 Gross decreases: Prior period tax positions — (5.9) (4.9) Currency translation — 0.5 1.2 Gross unrecognized tax benefits, end of period $ 124.6 $ 36.9 $ 39.5 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 December 31, 2021 and 2020 were $31.1 million and $9.0 million, respectively, and are included in other noncurrent liabilities in the Consolidated Balance Sheets. Open Tax Periods We operate in multiple tax jurisdictions, both within the U.S.and outside the U.S., 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 2012. Mosaic is continually under audit by various tax authorities in the normal course of business. Such tax authorities may raise issues contrary to positions taken by the Company. If such positions are ultimately not sustained by the Company this could result in material assessments to the Company. The costs related to defending, if needed, such positions on appeal or in court may be material. The Company believes that any issues considered are properly accounted for.

Accounting for Asset Retirement

Accounting for Asset Retirement Obligations	12 Months Ended
	Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract]
Accounting for Asset Retirement Obligations	ASSET RETIREMENT OBLIGATIONS We recognize our estimated asset retirement obligations (“ 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. 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. 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 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; (vi) decommission facilities, manage tailings and execute site reclamation at our Saskatchewan potash mines at the end of their useful lives; (vii) de-commission mines in Brazil and Peru acquired as part of the acquisition (the “ Acquisition ”) of Vale Fertilizantes S.A. (now known as Mosaic Fetilizantes P&K S.A. and (viii) de-commission plant sites and close Gypstacks in Brazil, also as part of the Acquisition. 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: Years Ended December 31, (in millions) 2021 2020 AROs, beginning of period $ 1,393.9 $ 1,315.2 Liabilities incurred 20.2 10.8 Liabilities settled (163.1) (125.1) Accretion expense 71.9 68.0 Revisions in estimated cash flows 443.3 167.3 Foreign currency translation (16.9) (42.3) AROs, end of period 1,749.3 1,393.9 Less current portion 222.4 190.2 Non-current portion of AROs $ 1,526.9 $ 1,203.7 North America Gypstack Closure Costs A majority of our ARO relates to Gypstack Closure Costs in Florida and Louisiana. For financial reporting purposes, we recognize our estimated 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 December 31, 2021 and 2020, the present value of our Gypstack Closure Costs ARO reflected in our Consolidated Balance Sheet was approximately $883.2 million and $669.9 million, respectively. As discussed below, we have arrangements to provide financial assurance for the estimated Gypstack Closure Costs associated with our facilities in Florida and Louisiana. EPA RCRA Initiative. On September 30, 2015, we and our subsidiary, Mosaic Fertilizer, LLC (“ Mosaic Fertilizer ”), reached agreements with the U.S. Environmental Protection Agency (“ EPA ”), the U.S. Department of Justice (“ DOJ ”), the Florida Department of Environmental Protection (“ FDEP ”) and the Louisiana Department of Environmental Quality on the terms of two consent decrees (collectively, the “ 2015 Consent Decrees ”) to resolve claims relating to our management of certain waste materials onsite at our Riverview, New Wales, Mulberry, Green Bay, South Pierce and Bartow fertilizer manufacturing facilities in Florida and our Faustina and Uncle Sam facilities in Louisiana. This followed a 2003 announcement by the EPA Office of Enforcement and Compliance Assurance 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. As discussed below, a separate consent decree was previously entered into with EPA and the FDEP with respect to RCRA compliance at the Plant City, Florida phosphate concentrates facility (the “ Plant City Facility ”) that we acquired as part of our acquisition (the “ CF Phosphate Assets Acquisition ”) of the Florida phosphate assets and assumption of certain related liabilities of CF Industries, Inc. (“ CF ”). The remaining monetary obligations under the 2015 Consent Decrees include: • Modification of certain operating practices and undertaking certain capital improvement projects over a period of several years that are expected to result in remaining capital expenditures likely to exceed $20 million in the aggregate. • Provision of additional financial assurance for the estimated Gypstack Closure Costs for Gypstacks at the covered facilities. The RCRA Trusts are discussed in Note 11 to our Consolidated Financial Statements. In addition, we have agreed to guarantee the difference between the amounts held in each RCRA Trust (including any earnings) and the estimated closure and long-term care costs. As of December 31, 2021, the undiscounted amount of our Gypstack Closure Costs ARO associated with the facilities covered by the 2015 Consent Decrees, determined using the assumptions used for financial reporting purposes, was approximately $1.8 billion, and the present value of our Gypstack Closure Costs ARO reflected in our Consolidated Balance Sheet for those facilities was approximately $603 million. Plant City and Bonnie Facilities. As part of the CF Phosphate Assets Acquisition, we assumed certain AROs related to Gypstack Closure Costs at both the Plant City Facility and a closed Florida phosphate concentrates facility in Bartow, Florida (the “ Bonnie Facility ”) that we acquired. Associated with these assets are two related financial assurance arrangements for which we became responsible and that provided sources of funds for the estimated Gypstack Closure Costs for these facilities. Pursuant to federal or state laws, the applicable government entities are permitted to draw against such amounts in the event we cannot perform such closure activities. One of the financial assurance arrangements was initially a trust (the “ Plant City Trust ”) established to meet the requirements under a consent decree with the EPA and the FDEP with respect to RCRA compliance at Plant City. The Plant City Trust also satisfied Florida financial assurance requirements at that site. Beginning in September 2016, as a substitute for the financial assurance provided through the Plant City Trust, we have provided financial assurance for the Plant City Facility in the form of a surety bond (the “ Plant City Bond ”). The amount of the Plant City Bond is $249.7 million, which reflects our closure cost estimates as of December 31, 2021. The other financial assurance arrangement was also a trust fund (the “ Bonnie Facility Trust ”) established to meet the requirements under Florida financial assurance regulations that apply to the Bonnie Facility. In July 2018, we received $21.0 million from the Bonnie Facility Trust by substituting for the trust fund a financial test mechanism (“ Bonnie Financial Test ”) supported by a corporate guarantee as allowed by state regulations. Both financial assurance funding obligations require estimates of future expenditures that could be impacted by refinements in scope, technological developments, new information, cost inflation, changes in regulations, discount rates and the timing of activities. Under our current approach to satisfying applicable requirements, additional financial assurance would be required in the future if increases in cost estimates exceed the face amount of the Plant City Bond or the amount supported by the Bonnie Financial Test. As of December 31, 2021 and 2020, the aggregate amounts of AROs associated with the combined Plant City Facility and Bonnie Facility Gypstack Closure Costs included in our consolidated balance sheet were $262.9 million and $251.8 million, respectively. The aggregate amount represented by the Plant City Bond exceeds the present value of the aggregate amount of ARO associated with that facility. This is because the amount of financial assurance we are required to provide represents the aggregate undiscounted estimated amount 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 the Gypstack has been closed, whereas the ARO included in our Consolidated Balance Sheet reflects the discounted present value of those estimated amounts.

Accounting for Derivative Instr

Accounting for Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Accounting for Derivative Instruments and Hedging Activities	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIESWe periodically enter into derivatives to mitigate our exposure to foreign currency risks, interest rate movements and the effects of changing commodity 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. As of December 31, 2021 and 2020, the gross asset position of our derivative instruments was $45.3 million and $65.3 million, respectively, and the gross liability position of our liability instruments was $45.5 million and $49.9 million, respectively. 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 products 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 gain/(loss) caption in the Consolidated Statements of Earnings. From time to time, we enter into fixed-to-floating interest rate contracts. We apply fair value hedge accounting treatment to these contracts. Under these arrangements, we agree to exchange, at specified intervals, the difference between fixed and floating interest amounts calculated by reference to an agreed-upon notional principal amount. The mark-to-market of these fair value hedges is recorded as gains or losses in interest expense. We had no fixed-to-floating interest rate swap agreements in effect as of December 31, 2021 and 2020. The following is the total absolute notional volume associated with our outstanding derivative instruments: (in millions of Units) Instrument Derivative Category Unit of Measure December 31, December 31, Foreign currency derivatives Foreign Currency US Dollars 3,185.8 2,912.3 Natural gas derivatives Commodity MM Btu 23.6 27.3 Credit-Risk-Related Contingent Features Certain of our derivative instruments contain provisions that are governed by International Swap and Derivatives Association agreements with the counterparties. These agreements contain provisions that allow us to settle for the net amount between payments and receipts, and 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 as of December 31, 2021 and 2020 was $8.6 million and $11.3 million, respectively. We have no cash collateral posted in association with these contracts. If the credit-risk-related contingent features underlying these agreements were triggered on December 31, 2021, we would have been required to post an additional $4.5 million of collateral assets, which are either cash or U.S. Treasury instruments, to the counterparties. Counterparty Credit Risk We enter into foreign exchange, certain commodity and interest rate 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, material losses are not anticipated. We closely monitor the credit risk associated with our counterparties and customers and to date have not experienced material losses.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS 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 and zero-cost collars, which typically expire within eighteen months. Derivative instruments that we used to hedge anticipated cash flows related to our Esterhazy K3 expansion project expire within a period of thirty-six months. Most of the valuations are adjusted by a forward yield curve or interest rates. In such cases, these derivative contracts are classified within Level 2. Some valuations are based on exchange-quoted prices, which are classified as Level 1. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold in our Corporate, Eliminations and Other segment or foreign currency transaction (gain) loss. As of December 31, 2021, and 2020, the gross asset position of our foreign currency derivative instruments was $27.0 million and $58.6 million, respectively, and the gross liability position of our foreign currency derivative instruments was $45.4 million and $48.7 million, respectively. 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 and settlements are scheduled 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 in our Corporate, Eliminations and Other segment. As of December 31, 2021 and 2020, the gross asset position of our commodity derivative instruments was $18.3 million and $6.7 million, respectively, and the gross liability position of our commodity derivative instruments was $0.1 million and $1.2 million, respectively. Interest Rate Derivatives – We manage interest expense through interest rate contracts to convert a portion of our fixed-rate debt into floating-rate debt. From time to time, we also enter into interest rate swap agreements to hedge our exposure to changes in future interest rates related to anticipated debt issuances. Valuations are based on external pricing sources and are classified as Level 2. Changes in the fair market values of these contracts are recognized in the Condensed Consolidated Financial Statements as a component of interest expense. In April 2020, we terminated our outstanding interest rate swap contracts which resulted in an immaterial impact to our Condensed Consolidated Statement of Earnings (Loss). Financial Instruments The carrying amounts and estimated fair values of our financial instruments are as follows: December 31, 2021 2020 Carrying Fair Carrying Fair (in millions) Amount Value Amount Value Cash and cash equivalents $ 769.5 $ 769.5 $ 574.0 $ 574.0 Accounts receivable 1,531.9 1,531.9 881.1 881.1 Accounts payable 1,260.7 1,260.7 769.1 769.1 Structured accounts payable arrangements 743.7 743.7 640.0 640.0 Short-term debt 302.8 302.8 0.1 0.1 Long-term debt, including current portion 3,978.8 4,516.1 4,578.0 5,172.1 For cash and cash equivalents, accounts receivable, net, accounts payable, structured accounts payable arrangements 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, including the current portion, 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. For information regarding the fair value of our marketable securities held in trusts, see Note 11 of our Notes to Consolidated Financial Statements.

Guarantees and Indemnities

Guarantees and Indemnities	12 Months Ended
	Dec. 31, 2021
Guarantees [Abstract]
Guarantees and Indemnities	GUARANTEES AND INDEMNITIESWe 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 December 31, 2021, we have estimated the maximum potential future payment under the guarantees to be $67.7 million. The fair value of our guarantees is immaterial to the Consolidated Financial Statements as of December 31, 2021 and 2020. 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.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2021
Accumulated Other Comprehensive Income [Abstract]
Accumulated Other Comprehensive Income (Loss) Note	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (" AOCI ") The following table sets forth the changes in AOCI by component during the years ended December 31, 2021, 2020 and 2019: (in millions) Foreign Currency Translation Gain (Loss) Net Actuarial Gain and Prior Service Cost Amortization of Gain on Interest Rate Swap Net Gain (Loss) on Marketable Securities Held in Trust Total Balance at December 31, 2018 $ (1,547.4) $ (105.3) $ 0.4 $ (4.8) (1,657.1) Other comprehensive income (loss) 74.1 (26.2) 2.2 14.0 64.1 Tax (expense) or benefit (4.7) 1.9 (0.5) (3.1) (6.4) Other comprehensive income (loss), net of tax 69.4 (24.3) 1.7 10.9 57.7 Addback: loss attributable to noncontrolling interest 1.2 — — — 1.2 Balance at December 31, 2019 $ (1,476.8) $ (129.6) $ 2.1 $ 6.1 $ (1,598.2) Other comprehensive income (loss) (246.1) 12.2 2.0 16.6 (215.3) Tax (expense) or benefit (3.4) 7.7 (0.4) (3.8) 0.1 Other comprehensive income (loss), net of tax (249.5) 19.9 1.6 12.8 (215.2) Addback: loss attributable to noncontrolling interest 7.2 — — — 7.2 Balance at December 31, 2020 $ (1,719.1) $ (109.7) $ 3.7 $ 18.9 $ (1,806.2) Other comprehensive income (loss) (117.0) 56.5 2.0 (22.7) (81.2) Tax (expense) or benefit 8.8 (19.6) (0.5) 5.1 (6.2) Other comprehensive income (loss), net of tax (108.2) 36.9 1.5 (17.6) (87.4) Addback: loss attributable to noncontrolling interest 1.8 — — — 1.8 Balance at December 31, 2021 $ (1,825.5) $ (72.8) $ 5.2 $ 1.3 $ (1,891.8)

Share Repurchases

Share Repurchases	12 Months Ended
	Dec. 31, 2021
Share Repurchases [Abstract]
Share Repurchases [Text Block]	SHARE REPURCHASES In August 2021, our Board of Directors authorized a new $1.0 billion share repurchase program (the “ 2021 Repurchase Program ”), replacing our 2015 Repurchase Program. The 2021 Repurchase Program allows the Company to repurchase shares of our Common Stock, through open market purchases, accelerated share repurchase arrangements, privately negotiated transactions or otherwise and has no set expiration date. In connection with this authorization, the remaining amount of $700 million authorized under 2015 Repurchase Program was terminated. During the year ended December 31, 2021, under the 2021 Repurchase Program, we repurchased 11,200,371 shares of Common Stock for a total of approximately $410.9 million. This includes 8,544,144 shares we purchased in an underwritten secondary offering by Vale S.A. when they fully divested their interest in Mosaic. The extent to which we repurchase our shares and the timing of any such repurchases depend on a number of factors, including market and business conditions, the price of our shares, and corporate, regulatory and other considerations.

Share-based Payments

Share-based Payments	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Share-Based Payments	SHARE-BASED PAYMENTS The Mosaic Company 2014 Stock and Incentive Plan (the “ 2014 Stock and Incentive Plan ”) was approved by our stockholders and became effective on May 15, 2014. It permits up to 25 million shares of common stock to be issued under share-based awards granted under the plan. The 2014 Stock and Incentive 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 2014 Stock and Incentive Plan. The Mosaic Company 2004 Omnibus Stock and Incentive Plan (the “ Omnibus Plan ”), which was approved by our stockholders and became effective in 2004 and subsequently amended, provided for the grant of shares and share options to employees for up to 25 million shares of common stock. While awards may no longer be made under the Omnibus Plan, it will remain in effect with respect to the awards that had been granted thereunder prior to its termination. Mosaic settles stock option exercises, restricted stock units and certain performance units and performance shares with newly issued common shares. The Compensation Committee of the Board of Directors administers the 2014 Stock and Incentive Plan and the Omnibus Plan subject to their respective 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 awarded in 2017 are noted in the following table. There were no stock options granted or issued in 2021, 2020, or 2019. 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. The risk-free interest rate is based on the U.S. Treasury rate at the time of the grant for instruments of comparable life. Year Ended December 31, 2017 Weighted average assumptions used in option valuations: Expected volatility 35.35 % Expected dividend yield 1.97 % Expected term (in years) 7 Risk-free interest rate 2.34 % A summary of the status of our stock options as of December 31, 2021, and activity during 2021, is as follows: Shares Weighted Weighted Average Remaining Contractual Term (Years) Aggregate Outstanding as of December 31, 2020 1.8 $ 43.89 Granted — — Exercised (0.1) $ 29.21 Cancelled (0.6) $ 58.56 Outstanding as of December 31, 2021 1.1 $ 38.47 3.4 $ 6.5 Exercisable as of December 31, 2021 1.1 $ 38.47 3.4 $ 6.5 The weighted-average grant date fair value of options granted during 2017 was $9.91. There were no options exercised during 2020 or 2019. Restricted Stock Units Restricted stock units are issued to various employees, officers and directors at a value 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 December 31, 2021, and activity during 2021, is as follows: Shares Weighted Restricted stock units as of December 31, 2020 2.5 $ 21.48 Granted 0.7 29.88 Issued and cancelled (0.8) $ 26.15 Restricted stock units as of December 31, 2021 2.4 $ 22.44 Performance Units During the years ended December 31, 2021, 2020 and 2019, 717,952, 1,309,170 and 603,856 total shareholder return (“ TSR ”) performance units were granted, respectively. Final performance units are 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 (a measure of total shareholder return or TSR). 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 units to vest, except in the event of death, disability or retirement at or after age 60, certain changes in control or the exercise of Committee or Board discretion as provided in the related award agreements. The fair value of each TSR 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. 262,308 of the TSR performance awards issued in 2021 are to be settled in cash, and are therefore accounted for as a liability with changes in value recorded through earnings during the service period. The remaining TSR performance units issued in 2021, and all of the 2020 and 2019 TSR performance units, are considered equity-classified fixed awards measured at grant-date fair value and not subsequently re-measured. All of the TSR performance units 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 of the award net of estimated forfeitures. A summary of the assumptions used to estimate the fair value of TSR performance units is as follows: Years Ended December 31, 2021 2020 2019 Performance units granted 717,952 1,309,170 603,856 Average fair value of performance units on grant date $ 27.91 $ 13.52 $ 25.87 Weighted average assumptions used in performance unit valuations: Expected volatility 58.26 % 43.49 % 33.70 % Expected dividend yield 0.68 % 1.24 % 0.72 % Expected term (in years) 3 3 3 Risk-free interest rate 0.32 % 0.61 % 2.43 % A summary of our performance unit activity during 2021 is as follows: Shares Weighted Outstanding as of December 31, 2020 2.6 $ 18.27 Granted 0.7 27.91 Issued and cancelled (0.5) $ 27.50 Outstanding as of December 31, 2021 2.8 $ 18.91 Share-Based Compensation Expense We recorded share-based compensation expense of $63.5 million, $24.5 million and $31.6 million for 2021, 2020 and 2019, respectively. The tax benefit related to share exercises and lapses in the year was $6.5 million, $5.2 million and $6.7 million for 2021, 2020 and 2019, respectively. As of December 31, 2021, there was $29.3 million of total unrecognized compensation cost related to options, restricted stock units and performance units and shares granted under the 2014 Stock and Incentive Plan and the Omnibus Plan. The unrecognized compensation cost is expected to be recognized over a weighted-average period of one year. No options vested in 2021, 2020 and 2019. There was no cash received from exercises of share-based payment arrangements for 2021, 2020 or 2019. We received a tax benefit for tax deductions from options of $14.0 million, $3.3 million and $2.6 million in 2021, 2020 and 2019, respectively.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments	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 29 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. Our future obligations under these leases are included in Note 3 of our Notes to Consolidated Financial Statements. We also have purchase obligations to purchase goods and services, primarily for raw materials used in products sold to customers. In 2013, we entered into an ammonia supply agreement with CF (the “ CF Ammonia Supply Agreement ”) that commenced in 2017, under which Mosaic agreed to purchase approximately 545,000 to 725,000 tonnes of ammonia per year at a price tied to the prevailing price of U.S. natural gas. The term of the contract may extend until December 31, 2032, although we have rights to terminate this contract at certain dates. We have long-term agreements for the purchase of sulfur, which is used in the production of phosphoric acid, and natural gas, which is a significant raw material used primarily in the solution mining process in our Potash segment as well as 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 expected market prices as of December 31, 2021 is as follows: (in millions) Purchase 2022 $ 5,687.1 2023 966.5 2024 619.8 2025 354.9 2026 298.4 Subsequent years 1,174.0 $ 9,100.7 Purchases made under long-term commitments in were $3.1 billion in 2021, and $1.9 billion in 2020 and 2019, respectively. Most of our export sales of potash crop nutrients are marketed through a North American export association, Canpotex, which may fund its operations in part through third-party financing facilities. As a member, Mosaic or our subsidiaries are contractually obligated to reimburse Canpotex for their pro rata share of any operating expenses or other liabilities incurred. The reimbursements are made through reductions to members’ cash receipts from Canpotex. 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 cash deposits, 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 and, therefore, in most cases, must be renewed on an annual basis. As of December 31, 2021, we had $645.7 million in surety bonds outstanding, of which $356.1 million is for reclamation obligations, primarily related to mining in Florida. In addition, included in the total amount is $249.7 million, reflecting our updated closure cost estimates, delivered to EPA as a substitute for the financial assurance provided through the Plant City Trust. The remaining balance in surety bonds outstanding of $39.9 million is for other matters.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Contingencies	CONTINGENCIES We have described below the material judicial and administrative proceedings to which we are subject. Environmental Matters 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 $57.3 million and $61.4 million, as of December 31, 2021 and 2020, 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. New Wales Water Loss Incident. In August 2016, a sinkhole developed under one of the two cells of the Phase II Gypstack at our New Wales facility in Polk County, Florida, resulting in process water from the stack draining into the sinkhole. The incident was reported to the FDEP and EPA. In October 2016, our subsidiary, Mosaic Fertilizer, entered into a consent order (the “ Order ”) with the FDEP relating to the incident. Under the order, Mosaic Fertilizer agreed to, among other things: implement a remediation plan to close the sinkhole; perform additional monitoring of the groundwater quality and act to assess and remediate in the event monitored off-site water does not comply with applicable standards as a result of the incident; evaluate the risk of potential future sinkhole formation at the New Wales facility and at Mosaic Fertilizer’s active Gypstack operations at the Bartow, Riverview and Plant City facilities with recommendations to address any identified issues; and provide financial assurance of no less than $40.0 million, which we have done without the need for any expenditure of corporate funds through satisfaction of a financial strength test and Mosaic parent guarantee. The Order did not require payment of civil penalties relating to the incident. As of December 31, 2021, the sinkhole repairs were substantially complete. Additional expenditures could be required in the future for additional remediation or other measures in connection with the sinkhole including if, for example, FDEP or EPA were to request additional measures to address risks presented by the Gypstack. These expenditures could be material. In addition, we are unable to predict at this time what, if any, impact the New Wales water loss incident will have on future Florida permitting efforts. EPA RCRA Initiative. We have certain financial assurance and other obligations under consent decrees and a separate financial assurance arrangement relating to our facilities in Florida and Louisiana. These obligations are discussed in Note 13 of our Notes to Consolidated Financial Statements. Florida Sulfuric Acid Plants. On April 8, 2010, 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. On June 6, 2010, EPA issued a notice of violation to CF (the “ CF NOV ”) with respect to “New Source Review” compliance at the Plant City Facility’s sulfuric acid plants and the allegations in the CF NOV were not resolved before our 2014 acquisition of the Plant City Facility. CF has agreed to indemnify us with respect to any penalty EPA may assess as a result of the allegations in the CF NOV. We have been engaged in settlement discussions with U.S. EPA and the DOJ, originating with the allegations of violations of Clean Air Act Prevention of Significant Deterioration (“ PSD ”) permitting requirements at the Plant City sulfuric acid plants and encompassing injunctive relief regarding sulfur dioxide emissions across Mosaic’s Florida sulfuric acid plant fleet. With the closure of Plant City fertilizer operations, there is no longer a need to reach resolution with the government on injunctive relief (i.e., reduction of sulfur dioxide emissions) at that facility. Furthermore, the DOJ has determined that there is no basis for proceeding with a settlement, as EPA and the Department have not currently alleged any violations of the Clean Air Act PSD permitting requirements at any other of Mosaic’s Florida sulfuric acid plants. On July 24, 2020, the DOJ filed a complaint against CF and stipulation of settlement, including a $550,000 civil penalty, concluding enforcement against CF related to the CF NOV. We cannot predict at this time whether EPA and DOJ will initiate an enforcement action in the future with respect to “New Source Review” compliance at our Florida sulfuric acid plants or what its scope would be, or what the range of outcomes might be with respect to such a potential enforcement action. Uncle Sam Gypstack . In January 2019, we observed lateral movement of the north slope of the active phosphogypsum stack at the Uncle Sam facility in Louisiana, designated Stack 4. The observation was reported to the Louisiana Department of Environmental Quality and the U.S. EPA. We continue to provide updates to the agencies on the movement, which has slowed following actions we have taken, which include reducing process water volume stored atop the stack to reduce the active load causing the movement; constructing a stability berm at the base of the slope to increase resistance; and removing gypsum from the north side to the south side. These steps have improved slope stability, reduced slope movement and reduced our capacity to store process water. There has been no loss of containment resulting from the movement observed, and none is expected. Although continued lateral movement on the north slope could have a material effect on our future operations at that facility, we cannot predict the prospective impact on our results of operations at this time. 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; CF; 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. We record potential indemnifications as an offset to the established accruals when they are realizable or realized. The failure of an indemnitor to fulfill its obligations could result in future costs that could be material. Louisiana Parishes Coastal Zone Cases Several Louisiana parishes and the City of New Orleans have filed lawsuits against hundreds of oil and gas companies seeking regulatory, restoration and compensatory damages in connection with historical oil, gas and sulfur mining and transportation operations in the coastal zone of Louisiana. Mosaic is the corporate successor to certain companies which performed these types of operations in the coastal zone of Louisiana. Mosaic has been named in two of the lawsuits filed to date. In addition, in several other cases, historical oil, gas and sulfur operations which may have been related to Mosaic’s corporate predecessors have been identified in the complaints. Based upon information known to date, Mosaic has contractual indemnification rights against third parties for any loss or liability arising out of these claims pursuant to indemnification agreements entered into by Mosaic’s corporate predecessor(s) with third parties. There may also be insurance contracts which may respond to some or all of the claims. However, the financial ability of the third-party indemnitors, the extent of potential insurance coverage and the extent of potential liability from these claims is currently unknown. In September 2019, counsel for several of the parishes announced that an agreement had been reached to settle the claims against Mosaic and its corporate predecessors, subject to approval by the participating parishes and the State of Louisiana. In connection with that settlement agreement, the proposed settlement payment obligations would be paid by third-party indemnitors. North America Phosphate Operations Denial of the permits sought at any of our mines, issuance of the permits with cost-prohibitive conditions, 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. Brazil Legal Contingencies Our Brazilian subsidiaries are engaged in a number of judicial and administrative proceedings regarding labor, environmental, mining and civil claims that allege aggregate damages and/or fines of approximately $706.2 million. We estimate that our probable aggregate loss with respect to these claims is approximately $56.7 million, which is included in our accrued liabilities in our Consolidated Balance Sheets at December 31, 2021. Approximately $548.3 million of the maximum potential loss relates to labor claims, such as in-house and third-party employees’ judicial proceedings alleging the right to receive overtime pay, additional payment due to work in hazardous conditions, risk premium, profit sharing, additional payment due to night work, salary parity and wage differences. We estimate that our probable aggregate loss regarding these claims is approximately $49.5 million, which is included in accrued liabilities in our Consolidated Balance Sheets at December 31, 2021. Based on Brazil legislation and the current status of similar labor cases involving unrelated companies, we believe we have recorded adequate loss contingency reserves sufficient to cover our estimate of probable losses. If the status of similar cases involving unrelated companies were to adversely change in the future, our maximum exposure could increase and additional accruals could be required. The environmental judicial and administrative proceedings claims allege aggregate damages and/or fines of approximately $19.0 million; however, we estimate that our probable aggregate loss regarding these claims is approximately $4.9 million, which has been accrued at December 31, 2021. Our Brazilian subsidiaries also have certain other civil contingent liabilities with respect to judicial, administrative and arbitration proceedings and claims related to contract disputes, pension plan matters, real state disputes, regulatory issues and other civil matters arising in the ordinary course of business. These claims allege aggregate damages of approximately $138.8 million. We estimate that the probable aggregate loss with respect to these matters is approximately $2.3 million. Uberaba Judicial Settlement In 2013, the Federal Public Prosecutor filed a public civil action requesting that the Company adopt several measures to mitigate soil and water contamination related to the Gypstack at our Uberaba facility, located in the State of Minas Gerais, including compensation for the alleged social and environmental damages. In 2014, our predecessor subsidiary in Brazil entered into a judicial settlement with the Federal Public Prosecutor, the State of Minas Gerais public prosecutor and the federal environmental agency. Under this agreement, we agreed to implement remediation measures such as: constructing a liner under the Gypstack water ponds and lagoons, and monitoring the groundwater and soil quality. We also agreed to create a private reserve of natural heritage and to pay compensation in the amount of approximately $0.3 million, which was paid in July 2018. We are currently acting in compliance with our obligations under the judicial settlement and expect them to be completed by December 31, 2025. Brazil Tax Contingencies Our Brazilian subsidiaries are 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 $380.0 million, of which $182.7 million is subject to an indemnification agreement entered into with Vale S.A in connection with the Acquisition. Approximately $236.8 million of the maximum potential liability relates to a Brazilian federal value added tax, PIS and COFINS, and tax credit cases, while the majority of the remaining amount relates to various other non-income tax cases. The maximum potential liability can increase with new audits. Based on Brazil legislation and the current status of similar tax cases involving unrelated taxpayers, we believe we have recorded adequate loss contingency reserves sufficient to cover our estimate of probable losses, which are immaterial. If the status of similar tax cases involving unrelated taxpayer changes in the future, additional accruals could be required. 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.

Related Party (Notes)

Related Party (Notes)	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	RELATED PARTY TRANSACTIONS We enter into transactions and agreements with certain of our non-consolidated companies and other related parties from time to time. As of December 31, 2021 and December 31, 2020, the net amount due from our non-consolidated companies totaled $63.0 million and $55.9 million, respectively. These amounts include a long-term indemnification asset of approximately $21.0 million from Vale S.A. for reimbursement of pension plan obligations. The Consolidated Statements of Earnings included the following transactions with our non-consolidated companies: Years Ended December 31, (in millions) 2021 2020 2019 Transactions with non-consolidated companies included in net sales $ 1,120.9 $ 819.6 $ 969.5 Transactions with non-consolidated companies included in cost of goods sold $ 1,483.8 $ 950.1 $ 1,057.7 As part of the MWSPC joint venture, we market approximately 25% of the MWSPC production, for which approximately $12.2 million, $8.5 million and $8.3 million is included in revenue for the years ended December 31, 2021, 2020 and 2019, respectively. In November 2015, we agreed to provide funds to finance the purchase and construction of two articulated tug and barge units, intended to transport anhydrous ammonia for our operations, through a bridge loan agreement with Gulf Marine Solutions, LLC (“ GMS ”). GMS is a wholly owned subsidiary of Gulf Sulphur Services Ltd., LLLP (“ Gulf Sulphur Services ”), an entity in which we and a joint venture partner, Savage Companies (“ Savage ”), each indirectly own a 50% equity interest and for which a subsidiary of Savage provides operating and management services. GMS provided these funds through draws on the Mosaic bridge loan and through additional loans from Gulf Sulphur Services. We are the primary beneficiary of GMS, a variable interest entity, and consolidate GMS’s operations in our Phosphates segment. On October 24, 2017, a lease financing transaction was completed with respect to the completed tug and barge unit, and, following the application of proceeds from the transaction, all outstanding loans made by Gulf Sulphur Services to GMS, together with accrued interest, were repaid, and the bridge loans related to the first unit’s construction were repaid. As of December 31, 2021 and December 31, 2020, there were outstanding bridge loans of $74.7 million relating to the cancelled second barge and the remaining tug, which bridge loans are eliminated in consolidation. Reserves against the bridge loans of approximately $54.2 million were established in 2018 and remain unchanged. The construction of the remaining tug, funded by the bridge loan advances in excess of the reserves, is recorded within construction in-progress within our consolidated balance sheet. Several subsidiaries of Savage operate vessels utilized by Mosaic under time charter arrangements, including the ammonia tug and barge unit.

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Business Segments	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. Intersegment eliminations, including profit on intersegment sales, mark-to-market gains/losses on derivatives, debt expenses, Streamsong Resort ® results of operations and the results of the China and India distribution business are included within Corporate, Eliminations and Other. As of January 1, 2019, certain selling, general and administrative costs that are not controllable by the business segments are no longer allocated to segments and are included within Corporate, Eliminations and Other. Segment information for the years 2021, 2020 and 2019 is as follows: (in millions) Phosphates Potash Mosaic Fertilizantes Corporate, Total Year Ended December 31, 2021 Net sales to external customers $ 3,889.7 $ 2,587.9 $ 5,088.5 $ 791.3 $ 12,357.4 Intersegment net sales 1,033.2 38.9 — (1,072.1) — Net sales 4,922.9 2,626.8 5,088.5 (280.8) 12,357.4 Gross margin 1,305.4 1,057.5 842.7 (5.3) 3,200.3 Canadian resource taxes — 259.5 — — 259.5 Gross margin (excluding Canadian resource taxes) 1,305.4 1,317.0 842.7 (5.3) 3,459.8 Impairment, restructuring and other expenses — 158.1 — — 158.1 Operating earnings 1,179.8 836.6 745.9 (293.8) 2,468.5 Capital expenditures 649.9 410.1 216.1 12.5 1,288.6 Depreciation, depletion and amortization expense 428.7 267.8 101.2 15.2 812.9 Equity in net earnings of nonconsolidated companies 5.4 — — 2.4 7.8 Year Ended December 31, 2020 Net sales to external customers $ 2,543.5 $ 1,988.6 $ 3,481.6 $ 668.0 $ 8,681.7 Intersegment net sales 572.9 30.7 — (603.6) — Net sales 3,116.4 2,019.3 3,481.6 64.4 8,681.7 Gross margin 125.5 468.3 419.6 51.5 1,064.9 Canadian resource taxes — 146.1 — — 146.1 Gross margin (excluding Canadian resource taxes) 125.5 614.4 419.6 51.5 1,211.0 Operating earnings (147.1) 401.5 346.5 (188.0) 412.9 Capital expenditures 538.1 478.2 144.9 9.4 1,170.6 Depreciation, depletion and amortization expense 443.4 282.4 105.7 16.1 847.6 Equity in net (loss) earnings of nonconsolidated companies (94.1) — — 0.3 (93.8) Year Ended December 31, 2019 Net sales to external customers $ 2,416.6 $ 2,081.7 $ 3,782.8 $ 625.2 $ 8,906.3 Intersegment net sales 824.7 32.1 — (856.8) — Net sales 3,241.3 2,113.8 3,782.8 (231.6) 8,906.3 Gross margin (82.3) 616.8 290.1 72.7 897.3 Canadian resource taxes — 174.6 — — 174.6 Gross margin (excluding Canadian resource taxes) (82.3) 791.4 290.1 72.7 1,071.9 Impairment, restructuring and other expenses 931.6 530.5 — — 1,462.1 Operating earnings (1,131.1) 45.8 132.5 (142.1) (1,094.9) Capital expenditures 545.2 540.1 182.3 4.6 1,272.2 Depreciation, depletion and amortization expense 430.1 296.3 135.8 20.5 882.7 Equity in net (loss) earnings of nonconsolidated companies (60.1) — — 0.7 (59.4) Total assets as of December 31, 2021 $ 8,776.4 $ 8,312.8 $ 4,908.2 $ 39.0 $ 22,036.4 Total assets as of December 31, 2020 7,022.1 7,614.8 4,127.7 1,025.2 19,789.8 Total assets as of December 31, 2019 (b) 7,183.5 7,219.2 3,974.9 920.9 19,298.5 ______________________________ (a) The “Corporate, Eliminations and Other” category includes the results of our ancillary distribution operations in India and China. For the years ended December 31, 2021, 2020 and 2019, distribution operations in India and China had revenues of $730.1 million, $639.4 million, and $575.6 million, respectively and gross margins of $141.6 million, $58.7 million, and $27.3 million, respectively. (b) In 2019, we recorded an impairment of goodwill in Phosphates of $588.6 million, which reduced the total asset balance. Financial information relating to our operations by geographic area is as follows: Years Ended December 31, (in millions) 2021 2020 2019 Net sales (a) : Brazil $ 5,002.2 $ 3,377.1 $ 3,675.1 Canpotex (b) 1,089.6 795.2 952.5 Canada 794.9 547.5 602.0 China 396.0 334.2 225.3 India 340.3 318.4 347.1 Colombia 135.1 93.4 82.8 Paraguay 113.8 94.3 102.9 Japan 112.4 58.8 33.0 Argentina 101.3 121.0 116.3 Mexico 93.6 77.1 117.8 Australia 64.8 85.1 91.3 Peru 40.0 62.0 89.3 Dominican Republic 29.8 17.1 17.3 Honduras 22.3 31.0 11.7 Thailand 18.1 21.2 24.8 Other 73.9 75.0 84.3 Total international countries 8,428.1 6,108.4 6,573.5 United States 3,929.3 2,573.3 2,332.8 Consolidated $ 12,357.4 $ 8,681.7 $ 8,906.3 ______________________________ (a) Revenues are attributed to countries based on location of customer. (b) Canpotex is the export association of two Saskatchewan potash producers. The net sales of potash from Mosaic to Canpotex included in our consolidated financial statements in the Net Sales line represent Mosaic’s sales of potash to Canpotex, and are recognized upon delivery to the unrelated third-party customer. Canpotex sales to the ultimate third-party customers are approximately: 30% to customers based in Brazil, 14% to customers based in Indonesia, 11% to customers based in China, 6% to customers based in India, and 39% to customers based in the rest of the world. December 31, (in millions) 2021 2020 Long-lived assets: Canada $ 5,012.2 $ 4,998.5 Brazil 2,011.0 1,904.1 Other 1,285.0 1,324.8 Total international countries 8,308.2 8,227.4 United States 6,233.6 5,688.8 Consolidated $ 14,541.8 $ 13,916.2 Excluded from the table above as of December 31, 2021 and 2020, are goodwill of $1,172.2 million and $1,173.0 million and deferred income taxes of $997.1 million and $1,179.4 million, respectively. Net sales by product type for the years 2021, 2020 and 2019 are as follows: Years Ended December 31, (in millions) 2021 2020 2019 Sales by product type: Phosphate Crop Nutrients $ 3,552.7 $ 2,477.0 $ 2,541.3 Potash Crop Nutrients 3,367.9 2,566.7 2,716.8 Crop Nutrient Blends 1,800.0 1,232.7 1,415.7 Performance Products (a) 1,973.6 1,370.8 1,193.6 Phosphate Rock 75.5 42.0 53.6 Other (b) 1,587.7 992.5 985.3 $ 12,357.4 $ 8,681.7 $ 8,906.3 ______________________________ (a) Includes sales of MicroEssentials ® , K-Mag ® , Aspire ® and Sus-Terra™ (b) Includes sales of industrial potash, feed products, nitrogen and other products.

Plant City and Colonsay Closure

Plant City and Colonsay Closure Costs (Notes)	12 Months Ended
	Dec. 31, 2021
Plant City and Colonsay Closure Costs [Abstract]
Restructuring, Impairment, and Other Activities Disclosure [Text Block]	MINE CLOSURE COSTS Due to increased brine inflows, on June 4, 2021, the Company made the decision to accelerate the timing of the shutdown of our K1 and K2 mine shafts at our Esterhazy, Saskatchewan potash mine. Closing the K1 and K2 shafts are key pieces of the transition to the K3 shaft, but the timeline for the closure was accelerated by approximately nine months. In 2021, we had pre-tax costs of $158.1 million related to the permanent closure of these facilities. These costs consisted of $109.9 million related to the write-off of fixed assets, $37.1 million related to AROs, and $11.1 million related to inventory and other reserves. In the third quarter of 2021, we resumed production at our previously idled Colonsay potash mine to offset a portion of the production lost by the early closure of the K1 and K2 shafts at Esterhazy. On January 28, 2020, we announced that we intend to keep our Colonsay, Saskatchewan potash mine idled for the foreseeable future. The mine was placed in care and maintenance mode, employing minimal staff and allowing for resumption of operations when needed to meet customers’ needs. For the year ended December 31, 2019, we recorded pre-tax costs of approximately $529.7 million in impairment, restructuring and other expenses in our Consolidated Statement of Earnings (Loss), related to this idling. These costs consisted of approximately $493 million related to the write-off of fixed assets, $27 million related to severance and other employee costs, and $10 million related to the write-off of maintenance, repair, and operating inventories. The write-off is principally the carrying value of the 2013 expansion project, which increased Colonsay’s operating capacity to 2.1 million tonnes. Colonsay had been operating with a modified 1.5 million tonnes capacity since 2016. On June 18, 2019, we announced the permanent closure of the Plant City Facility. We temporarily idled the Plant City Facility in the fourth quarter of 2017, as it was one of our higher cost phosphate facilities. For the year ended December 31, 2019, we recognized pre-tax costs of $341.3 million in impairment, restructuring and other expenses in our Consolidated Statement of Earnings (Loss), related to the permanent closure of this facility. These costs consisted of approximately $210 million related to the write-off of fixed assets, $110 million related to asset retirement obligations and $21 million related to inventory and other reserves.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS Subsequent to December 31, 2021, our Board of Directors approved an accelerated share repurchase (" ASR ") of $400 million which is expected to be initiated in February 2022. This ASR will exhaust most of the remaining share repurchase authorization established in the 2021 Repurchase Program. Following the completion of the current authorization, our Board of Directors also approved the establishment of a new $1.0 billion share repurchase authorization, which will go into effect following completion of this ASR. The Board of Directors has also approved a regular dividend increase to $0.60 per share annually from $0.45, beginning with the second quarter 2022 payment.

Investments, All Other Investme

Investments, All Other Investments (Policies)	12 Months Ended
	Dec. 31, 2021
Investments, All Other Investments [Abstract]
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. The cash flow presentation of dividends received from equity method investees is determined by evaluation of the facts, circumstances and nature of the distribution.

Intangible Assets, Goodwill and

Intangible Assets, Goodwill and Other (Policies)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
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 on a quantitative basis at the reporting unit level on an annual basis or upon the occurrence of events that may indicate possible impairment. Impairment is measured as the excess carrying value over the fair value of goodwill.

Debt (Policies)

Debt (Policies)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Structured Accounts Payable Arrangements	In Brazil, we finance some of our potash-based fertilizer, sulfur, ammonia and other raw material product purchases through third-party contractual arrangements. These arrangements provide that the third-party intermediary advance the amount of the scheduled payment to the vendor, less an appropriate discount, at a scheduled payment date and Mosaic makes payment to the third-party intermediary at a later date, stipulated in accordance with the commercial terms negotiated. At December 31, 2021 and 2020, these structured accounts payable arrangements were $743.7 million and $640.0 million, respectively.

Income Taxes (Policies)

Income Taxes (Policies)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
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.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Schedule of Lease Assets and Liabilities [Table Text Block]	as of December 31, 2021 and December 31, 2020 is as follows: December 31, Type of Lease Asset or Liability 2021 2020 Balance Sheet Classification (in millions) Operating Leases Right-of-use assets $ 120.2 $ 173.1 Other assets Lease liabilities: Short-term 59.7 64.0 Accrued liabilities Long-term 64.3 109.6 Other noncurrent liabilities Total $ 124.0 $ 173.6 Finance Leases Right-of-use assets: Gross assets $ 459.1 $ 457.9 Less: accumulated depreciation 122.8 89.3 Net assets $ 336.3 $ 368.6 Property, plant and equipment, net Lease liabilities: Short-term $ 41.2 $ 49.9 Current maturities of long-term debt Long-term 171.8 294.6 Long-term debt, less current maturities Total $ 213.0 $ 344.5
Lease, Cost [Table Text Block]	The components of lease expense were as follows: December 31, (in millions) 2021 2020 2019 Operating lease cost $ 78.8 $ 81.7 $ 98.4 Finance lease cost: Amortization of right-of-use assets 40.6 37.7 28.3 Interest on lease liabilities 6.3 13.3 15.2 Short-term lease cost 3.1 3.1 10.5 Variable lease cost 19.2 21.8 21.5 Total lease cost $ 148.0 $ 157.6 $ 173.9 Supplemental cash flow information related to leases was as follows: December 31, (In millions) 2021 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 78.8 $ 96.6 $ 107.9 Operating cash flows from finance leases 6.3 8.4 10.7 Financing cash flows from finance leases 142.5 46.9 41.3 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 18.4 $ 22.4 $ 56.0 Finance leases 8.9 36.4 88.2
Schedule of Future Minimum Lease Payments for Operating and Finance Leases [Table Text Block]	Future lease payments under non-cancellable leases recorded as of December 31, 2021, were as follows: Operating Leases Finance Leases (in millions) 2022 $ 63.3 $ 45.4 2023 29.7 70.9 2024 18.6 86.9 2025 7.1 4.8 2026 3.1 4.0 Thereafter 17.7 10.8 Total future lease payments $ 139.5 $ 222.8 Less imputed interest (15.5) (9.8) Total $ 124.0 $ 213.0

Other Financial Statement Data

Other Financial Statement Data (Tables)	12 Months Ended
	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Schedule of Other Assets and Other Liabilities	The following provides additional information concerning selected balance sheet accounts: December 31, (in millions) 2021 2020 Receivables Trade - External $ 954.6 $ 632.8 Trade - Affiliate 390.1 99.7 Non-trade 187.7 149.0 1,532.4 881.5 Less allowance for doubtful accounts 0.5 0.4 $ 1,531.9 $ 881.1 Inventories Raw materials $ 296.6 $ 92.1 Work in process 741.1 634.5 Finished goods 1,534.3 868.2 Final price deferred (a) 31.4 23.0 Operating materials and supplies 138.0 121.4 $ 2,741.4 $ 1,739.2 Other current assets Income and other taxes receivable $ 126.1 $ 181.4 Prepaid expenses 107.3 80.4 Other 49.1 65.1 $ 282.5 $ 326.9 Other assets Restricted cash $ 8.5 $ 12.3 MRO inventory 144.7 137.7 Marketable securities held in trust - restricted 731.5 734.3 Operating lease right-of-use assets 120.2 173.1 Indemnification asset 21.0 23.0 Long-term receivable 41.5 52.6 Other 307.3 255.8 $ 1,374.7 $ 1,388.8 December 31, (in millions) 2021 2020 Accrued liabilities Accrued dividends $ 43.6 $ 20.4 Payroll and employee benefits 235.9 195.5 Asset retirement obligations 222.4 190.2 Customer prepayments (b) 437.7 287.6 Accrued income and other taxes 184.3 83.1 Operating lease obligation 59.7 64.0 Servicing liability 81.1 — Other 618.9 392.3 $ 1,883.6 $ 1,233.1 Other noncurrent liabilities Asset retirement obligations $ 1,526.9 $ 1,203.7 Operating lease obligation 64.3 109.6 Accrued pension and postretirement benefits 114.4 158.5 Unrecognized tax benefits 156.6 46.4 Other 239.9 235.3 $ 2,102.1 $ 1,753.5 ______________________________ (a) Final price deferred is product that has shipped to customers, but we retain control and do not recognize revenue until a sales contract has been agreed to with the customer. (b) The timing of recognition of revenue related to our performance obligations may be different than the timing of collection of cash related to those performance obligations. Specifically, we collect prepayments from certain customers in Brazil. In addition, cash collection from Canpotex may occur prior to delivery of product to the end customer. We generally satisfy our contractual liabilities within one quarter of incurring the liability.
Schedule of Other Nonoperating Income (Expense)	Interest expense, net was comprised of the following in 2021, 2020 and 2019: Years Ended December 31, (in millions) 2021 2020 2019 Interest income $ 25.2 $ 33.5 $ 33.1 Less interest expense 194.3 214.1 216.0 Interest expense, net $ (169.1) $ (180.6) $ (182.9)

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property Plant And Equipment	Property, plant and equipment consist of the following: December 31, (in millions) 2021 2020 Land $ 341.6 $ 325.7 Mineral properties and rights 5,791.3 5,035.2 Buildings and leasehold improvements 3,452.5 3,306.2 Machinery and equipment 9,893.6 9,846.9 Construction in-progress 1,234.4 1,447.1 20,713.4 19,961.1 Less: accumulated depreciation and depletion 8,238.1 8,106.8 $ 12,475.3 $ 11,854.3

Investments in Non-Consolidat_2

Investments in Non-Consolidated Companies (Tables)	12 Months Ended
	Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Equity Method Investments	A summary of our equity-method investments, which were in operation as of December 31, 2021, is as follows: Entity Economic Interest Gulf Sulphur Services LTD., LLLP 50.0 % River Bend Ag, LLC 50.0 % IFC S.A. 45.0 % MWSPC 25.0 % Canpotex* 36.2 % * In 2021 our realized percentage was 33% as a result of lower shipments due to the early closure of the K1 and K2 mine shafts at Esterhazy. The summarized financial information shown below includes all non-consolidated companies carried on the equity method. Years Ended December 31, (in millions) 2021 2020 2019 Net sales $ 4,758.2 $ 3,463.2 $ 4,058.5 Net earnings (loss) 70.1 (405.3) (215.0) Mosaic’s share of equity in net earnings (loss) 7.8 (93.8) (59.4) Total assets 10,685.6 8,944.4 9,682.5 Total liabilities 8,864.7 7,184.9 7,512.7 Mosaic’s share of equity in net assets 466.9 452.5 554.7

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	The changes in the carrying amount of goodwill, by reporting unit, as of December 31, 2021 and 2020, are as follows: (in millions) Potash Mosaic Fertilizantes Corporate, Eliminations and Other Total Balance as of December 31, 2019 $ 1,039.8 $ 105.0 $ 12.1 $ 1,156.9 Foreign currency translation 23.4 (7.3) — 16.1 Balance as of December 31, 2020 $ 1,063.2 $ 97.7 $ 12.1 $ 1,173.0 Foreign currency translation 1.0 (1.8) — (0.8) Balance as of December 31, 2021 $ 1,064.2 $ 95.9 $ 12.1 $ 1,172.2

Financing Arrangements (Tables)

Financing Arrangements (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of long-term debt, including current maturites	Long-term debt as of December 31, 2021 and 2020, respectively, consisted of the following: (in millions) December 31, 2021 December 31, 2021 Maturity Date December 31, 2021 Combination Fair Discount on Notes Issuance December 31, 2021 December 31, 2020 Combination Fair Discount on Notes Issuance December 31, 2020 Unsecured notes 3.25% - 5.18% 2022- $ 3,550.0 $ — $ (6.6) $ 3,543.4 $ 4,000.0 $ — $ (5.3) $ 3,994.7 Unsecured debentures 7.30% 7.19% 2028 147.1 0.7 — 147.8 147.1 0.9 — 148.0 Finance leases 0.60% - 2.39% 2022- 213.0 — — 213.0 344.5 — — 344.5 Other (a) 6.53% - 4.08% 2022- 64.9 9.7 — 74.6 78.8 12.0 — 90.8 Total long-term debt 3,975.0 10.4 (6.6) 3,978.8 4,570.4 12.9 (5.3) 4,578.0 Less current portion 594.8 2.3 (0.5) 596.6 502.9 2.3 (1.0) 504.2 Total long-term debt, less current maturities $ 3,380.2 $ 8.1 $ (6.1) $ 3,382.2 $ 4,067.5 $ 10.6 $ (4.3) $ 4,073.8 ______________________________ (a) Includes deferred financing fees related to our long term debt.
Scheduled maturities of long-term debt	Scheduled maturities of long-term debt are as follows for the periods ending December 31: (in millions) 2022 $ 596.6 2023 996.2 2024 103.1 2025 15.7 2026 15.7 Thereafter 2,251.5 Total $ 3,978.8

Marketable Securities Held in_2

Marketable Securities Held in Trusts (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale	The estimated fair value of the investments in the RCRA Trusts as of December 31, 2021 and December 31, 2020 are as follows: December 31, 2021 (in millions) Amortized Gross Gross Fair Level 1 Cash and cash equivalents $ 8.1 $ — $ — $ 8.1 Level 2 Corporate debt securities 198.8 5.6 (0.9) 203.5 Municipal bonds 198.1 6.5 (0.5) 204.1 U.S. government bonds 305.3 — (6.1) 299.2 Total $ 710.3 $ 12.1 $ (7.5) $ 714.9 December 31, 2020 (in millions) Amortized Gross Gross Fair Level 1 Cash and cash equivalents $ 11.8 $ — $ — $ 11.8 Level 2 Corporate debt securities 193.3 14.0 — 207.3 Municipal bonds 190.5 8.8 (0.3) 199.0 U.S. government bonds 300.7 4.7 (0.1) 305.3 Total $ 696.3 $ 27.5 $ (0.4) $ 723.4
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value	The following tables show gross unrealized losses and fair values of the RCRA Trusts’ available-for-sale securities that have been in a continuous unrealized loss position for which an allowance for credit losses has not been recorded as of December 31, 2021 and December 31, 2020. December 31, 2021 December 31, 2020 Securities that have been in a continuous loss position for less than 12 months (in millions) : Fair Gross Fair Gross Corporate debt securities $ 67.1 $ (0.8) $ 1.5 $ — Municipal bonds 39.9 (0.4) 16.0 (0.2) U.S. government bonds 152.2 (2.5) 120.3 (0.1) Total $ 259.2 $ (3.7) $ 137.8 $ (0.3) December 31, 2021 December 31, 2020 Securities that have been in a continuous loss position for more than 12 months (in millions) : Fair Gross Fair Gross Corporate debt securities $ 3.6 $ (0.1) $ — $ — Municipal bonds 4.5 (0.1) 4.6 (0.1) U.S. government bonds 143.4 (3.6) — — Total $ 151.5 $ (3.8) $ 4.6 $ (0.1)
Schedule of maturity dates for debt securities	The following table summarizes the balance by contractual maturity of the available-for-sale debt securities invested by the RCRA Trusts as of December 31, 2021. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations before the underlying contracts mature. (in millions) December 31, 2021 Due in one year or less $ 26.4 Due after one year through five years 351.9 Due after five years through ten years 293.9 Due after ten years 34.6 Total debt securities $ 706.8

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Provision For Income Taxes	The provision for income taxes for 2021, 2020 and 2019, consisted of the following: Years Ended December 31, (in millions) 2021 2020 2019 Current: Federal $ (12.7) $ (22.0) $ (75.5) State 5.6 1.3 (5.2) Non-U.S. 386.9 114.4 119.1 Total current 379.8 93.7 38.4 Noncurrent: Federal $ — $ — $ — State — — — Non-U.S. 110.0 3.2 — Total noncurrent 110.0 3.2 — Deferred: Federal $ 141.9 $ (66.7) $ (194.8) State 21.4 (12.9) (6.7) Non-U.S. (55.4) (595.8) (61.6) Total deferred 107.9 (675.4) (263.1) Provision for (benefit from) income taxes $ 597.7 $ (578.5) $ (224.7)
Schedule Of Effective Income Tax Rate	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: Years Ended December 31, (in millions) 2021 2020 2019 U.S.earnings (loss) $ 900.1 $ (449.0) $ (1,096.2) Non-U.S. earnings 1,324.7 629.9 (159.9) Earnings (loss) from consolidated companies before income taxes $ 2,224.8 $ 180.9 $ (1,256.1) Computed tax at the U.S. federal statutory rate 21.0 % 21.0 % 21.0 % State and local income taxes, net of federal income tax benefit 1.2 % (7.0) % 2.6 % Percentage depletion in excess of basis (1.1) % (10.3) % 2.5 % Impact of non-U.S. earnings 6.3 % 42.1 % 5.3 % Change in valuation allowance (0.3) % (330.0) % (3.1) % Phosphates goodwill impairment — % — % (5.0) % Non-U.S. incentives (5.7) % (35.6) % — % Other items (none in excess of 5% of computed tax) 5.5 % — % (5.4) % Effective tax rate 26.9 % (319.8) % 17.9 %
Schedule Of Deferred Tax Assets And Liabilities	Significant components of our deferred tax liabilities and assets as of December 31 were as follows: December 31, (in millions) 2021 2020 Deferred tax liabilities: Depreciation and amortization $ 456.2 $ 232.5 Depletion 430.1 527.0 Partnership tax basis differences 66.3 69.0 Undistributed earnings of non-U.S. subsidiaries — 3.8 Other liabilities 39.1 32.5 Total deferred tax liabilities $ 991.7 $ 864.8 Deferred tax assets: Deferred revenue $ — $ 62.4 Capital loss carryforwards — 0.1 Foreign tax credit carryforwards 775.1 628.6 Net operating loss carryforwards 232.3 321.8 Pension plans and other benefits 19.8 34.2 Asset retirement obligations 337.3 262.9 Disallowed interest expense under §163(j) 31.6 68.8 Other assets 351.2 287.6 Subtotal 1,747.3 1,666.4 Valuation allowance 774.7 683.0 Net deferred tax assets 972.6 983.4 Net deferred tax liabilities $ (19.1) $ 118.6
Summary Of Income Tax Uncertainties	A summary of gross unrecognized tax benefit activity is as follows: Years Ended December 31, (in millions) 2021 2020 2019 Gross unrecognized tax benefits, beginning of period $ 36.9 $ 39.5 $ 38.1 Gross increases: Prior period tax positions 84.7 — — Current period tax positions 3.0 2.8 5.1 Gross decreases: Prior period tax positions — (5.9) (4.9) Currency translation — 0.5 1.2 Gross unrecognized tax benefits, end of period $ 124.6 $ 36.9 $ 39.5
Summary of Valuation Allowance	Changes to our income tax valuation allowance were as follows: Years Ended December 31, (in millions) 2021 2020 2019 Income tax valuation allowance, related to deferred income taxes Balance at beginning of period $ 683.0 $ 1,457.10 $ 1,530.5 Charges or (reductions) to costs and expenses 91.7 (774.1) (73.4) Balance at end of period $ 774.7 $ 683.0 $ 1,457.1

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Asset Retirement Obligations	A reconciliation of our AROs is as follows: Years Ended December 31, (in millions) 2021 2020 AROs, beginning of period $ 1,393.9 $ 1,315.2 Liabilities incurred 20.2 10.8 Liabilities settled (163.1) (125.1) Accretion expense 71.9 68.0 Revisions in estimated cash flows 443.3 167.3 Foreign currency translation (16.9) (42.3) AROs, end of period 1,749.3 1,393.9 Less current portion 222.4 190.2 Non-current portion of AROs $ 1,526.9 $ 1,203.7

Accounting for Derivative Ins_2

Accounting for Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule Of Derivative Instruments Notional Amounts	The following is the total absolute notional volume associated with our outstanding derivative instruments: (in millions of Units) Instrument Derivative Category Unit of Measure December 31, December 31, Foreign currency derivatives Foreign Currency US Dollars 3,185.8 2,912.3 Natural gas derivatives Commodity MM Btu 23.6 27.3

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The carrying amounts and estimated fair values of our financial instruments are as follows: December 31, 2021 2020 Carrying Fair Carrying Fair (in millions) Amount Value Amount Value Cash and cash equivalents $ 769.5 $ 769.5 $ 574.0 $ 574.0 Accounts receivable 1,531.9 1,531.9 881.1 881.1 Accounts payable 1,260.7 1,260.7 769.1 769.1 Structured accounts payable arrangements 743.7 743.7 640.0 640.0 Short-term debt 302.8 302.8 0.1 0.1 Long-term debt, including current portion 3,978.8 4,516.1 4,578.0 5,172.1

Accumulated other Comprehensi_2

Accumulated other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2021
Accumulated Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table sets forth the changes in AOCI by component during the years ended December 31, 2021, 2020 and 2019: (in millions) Foreign Currency Translation Gain (Loss) Net Actuarial Gain and Prior Service Cost Amortization of Gain on Interest Rate Swap Net Gain (Loss) on Marketable Securities Held in Trust Total Balance at December 31, 2018 $ (1,547.4) $ (105.3) $ 0.4 $ (4.8) (1,657.1) Other comprehensive income (loss) 74.1 (26.2) 2.2 14.0 64.1 Tax (expense) or benefit (4.7) 1.9 (0.5) (3.1) (6.4) Other comprehensive income (loss), net of tax 69.4 (24.3) 1.7 10.9 57.7 Addback: loss attributable to noncontrolling interest 1.2 — — — 1.2 Balance at December 31, 2019 $ (1,476.8) $ (129.6) $ 2.1 $ 6.1 $ (1,598.2) Other comprehensive income (loss) (246.1) 12.2 2.0 16.6 (215.3) Tax (expense) or benefit (3.4) 7.7 (0.4) (3.8) 0.1 Other comprehensive income (loss), net of tax (249.5) 19.9 1.6 12.8 (215.2) Addback: loss attributable to noncontrolling interest 7.2 — — — 7.2 Balance at December 31, 2020 $ (1,719.1) $ (109.7) $ 3.7 $ 18.9 $ (1,806.2) Other comprehensive income (loss) (117.0) 56.5 2.0 (22.7) (81.2) Tax (expense) or benefit 8.8 (19.6) (0.5) 5.1 (6.2) Other comprehensive income (loss), net of tax (108.2) 36.9 1.5 (17.6) (87.4) Addback: loss attributable to noncontrolling interest 1.8 — — — 1.8 Balance at December 31, 2021 $ (1,825.5) $ (72.8) $ 5.2 $ 1.3 $ (1,891.8)

Share-based Payments (Tables)

Share-based Payments (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	Assumptions used to calculate the fair value of stock options awarded in 2017 are noted in the following table. There were no stock options granted or issued in 2021, 2020, or 2019. 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. The risk-free interest rate is based on the U.S. Treasury rate at the time of the grant for instruments of comparable life. Year Ended December 31, 2017 Weighted average assumptions used in option valuations: Expected volatility 35.35 % Expected dividend yield 1.97 % Expected term (in years) 7 Risk-free interest rate 2.34 %
Schedule of Share-based Compensation, Stock Options, Activity	A summary of the status of our stock options as of December 31, 2021, and activity during 2021, is as follows: Shares Weighted Weighted Average Remaining Contractual Term (Years) Aggregate Outstanding as of December 31, 2020 1.8 $ 43.89 Granted — — Exercised (0.1) $ 29.21 Cancelled (0.6) $ 58.56 Outstanding as of December 31, 2021 1.1 $ 38.47 3.4 $ 6.5 Exercisable as of December 31, 2021 1.1 $ 38.47 3.4 $ 6.5
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	A summary of the status of our restricted stock units as of December 31, 2021, and activity during 2021, is as follows: Shares Weighted Restricted stock units as of December 31, 2020 2.5 $ 21.48 Granted 0.7 29.88 Issued and cancelled (0.8) $ 26.15 Restricted stock units as of December 31, 2021 2.4 $ 22.44
Schedule Of Nonvested Performance Based Units Valuation Assumptions	A summary of the assumptions used to estimate the fair value of TSR performance units is as follows: Years Ended December 31, 2021 2020 2019 Performance units granted 717,952 1,309,170 603,856 Average fair value of performance units on grant date $ 27.91 $ 13.52 $ 25.87 Weighted average assumptions used in performance unit valuations: Expected volatility 58.26 % 43.49 % 33.70 % Expected dividend yield 0.68 % 1.24 % 0.72 % Expected term (in years) 3 3 3 Risk-free interest rate 0.32 % 0.61 % 2.43 %
Schedule of Nonvested Performance-based Units Activity	A summary of our performance unit activity during 2021 is as follows: Shares Weighted Outstanding as of December 31, 2020 2.6 $ 18.27 Granted 0.7 27.91 Issued and cancelled (0.5) $ 27.50 Outstanding as of December 31, 2021 2.8 $ 18.91

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of commitments and contingencies	A schedule of future minimum long-term purchase commitments, based on expected market prices as of December 31, 2021 is as follows: (in millions) Purchase 2022 $ 5,687.1 2023 966.5 2024 619.8 2025 354.9 2026 298.4 Subsequent years 1,174.0 $ 9,100.7

Related Party (Tables)

Related Party (Tables)	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Schedule of Related Party Transactions [Table Text Block]	The Consolidated Statements of Earnings included the following transactions with our non-consolidated companies: Years Ended December 31, (in millions) 2021 2020 2019 Transactions with non-consolidated companies included in net sales $ 1,120.9 $ 819.6 $ 969.5 Transactions with non-consolidated companies included in cost of goods sold $ 1,483.8 $ 950.1 $ 1,057.7

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of segment reporting by segment	Segment information for the years 2021, 2020 and 2019 is as follows: (in millions) Phosphates Potash Mosaic Fertilizantes Corporate, Total Year Ended December 31, 2021 Net sales to external customers $ 3,889.7 $ 2,587.9 $ 5,088.5 $ 791.3 $ 12,357.4 Intersegment net sales 1,033.2 38.9 — (1,072.1) — Net sales 4,922.9 2,626.8 5,088.5 (280.8) 12,357.4 Gross margin 1,305.4 1,057.5 842.7 (5.3) 3,200.3 Canadian resource taxes — 259.5 — — 259.5 Gross margin (excluding Canadian resource taxes) 1,305.4 1,317.0 842.7 (5.3) 3,459.8 Impairment, restructuring and other expenses — 158.1 — — 158.1 Operating earnings 1,179.8 836.6 745.9 (293.8) 2,468.5 Capital expenditures 649.9 410.1 216.1 12.5 1,288.6 Depreciation, depletion and amortization expense 428.7 267.8 101.2 15.2 812.9 Equity in net earnings of nonconsolidated companies 5.4 — — 2.4 7.8 Year Ended December 31, 2020 Net sales to external customers $ 2,543.5 $ 1,988.6 $ 3,481.6 $ 668.0 $ 8,681.7 Intersegment net sales 572.9 30.7 — (603.6) — Net sales 3,116.4 2,019.3 3,481.6 64.4 8,681.7 Gross margin 125.5 468.3 419.6 51.5 1,064.9 Canadian resource taxes — 146.1 — — 146.1 Gross margin (excluding Canadian resource taxes) 125.5 614.4 419.6 51.5 1,211.0 Operating earnings (147.1) 401.5 346.5 (188.0) 412.9 Capital expenditures 538.1 478.2 144.9 9.4 1,170.6 Depreciation, depletion and amortization expense 443.4 282.4 105.7 16.1 847.6 Equity in net (loss) earnings of nonconsolidated companies (94.1) — — 0.3 (93.8) Year Ended December 31, 2019 Net sales to external customers $ 2,416.6 $ 2,081.7 $ 3,782.8 $ 625.2 $ 8,906.3 Intersegment net sales 824.7 32.1 — (856.8) — Net sales 3,241.3 2,113.8 3,782.8 (231.6) 8,906.3 Gross margin (82.3) 616.8 290.1 72.7 897.3 Canadian resource taxes — 174.6 — — 174.6 Gross margin (excluding Canadian resource taxes) (82.3) 791.4 290.1 72.7 1,071.9 Impairment, restructuring and other expenses 931.6 530.5 — — 1,462.1 Operating earnings (1,131.1) 45.8 132.5 (142.1) (1,094.9) Capital expenditures 545.2 540.1 182.3 4.6 1,272.2 Depreciation, depletion and amortization expense 430.1 296.3 135.8 20.5 882.7 Equity in net (loss) earnings of nonconsolidated companies (60.1) — — 0.7 (59.4) Total assets as of December 31, 2021 $ 8,776.4 $ 8,312.8 $ 4,908.2 $ 39.0 $ 22,036.4 Total assets as of December 31, 2020 7,022.1 7,614.8 4,127.7 1,025.2 19,789.8 Total assets as of December 31, 2019 (b) 7,183.5 7,219.2 3,974.9 920.9 19,298.5 ______________________________ (a) The “Corporate, Eliminations and Other” category includes the results of our ancillary distribution operations in India and China. For the years ended December 31, 2021, 2020 and 2019, distribution operations in India and China had revenues of $730.1 million, $639.4 million, and $575.6 million, respectively and gross margins of $141.6 million, $58.7 million, and $27.3 million, respectively. (b) In 2019, we recorded an impairment of goodwill in Phosphates of $588.6 million, which reduced the total asset balance.
Revenue from external customers by geographic areas	Financial information relating to our operations by geographic area is as follows: Years Ended December 31, (in millions) 2021 2020 2019 Net sales (a) : Brazil $ 5,002.2 $ 3,377.1 $ 3,675.1 Canpotex (b) 1,089.6 795.2 952.5 Canada 794.9 547.5 602.0 China 396.0 334.2 225.3 India 340.3 318.4 347.1 Colombia 135.1 93.4 82.8 Paraguay 113.8 94.3 102.9 Japan 112.4 58.8 33.0 Argentina 101.3 121.0 116.3 Mexico 93.6 77.1 117.8 Australia 64.8 85.1 91.3 Peru 40.0 62.0 89.3 Dominican Republic 29.8 17.1 17.3 Honduras 22.3 31.0 11.7 Thailand 18.1 21.2 24.8 Other 73.9 75.0 84.3 Total international countries 8,428.1 6,108.4 6,573.5 United States 3,929.3 2,573.3 2,332.8 Consolidated $ 12,357.4 $ 8,681.7 $ 8,906.3 ______________________________ (a) Revenues are attributed to countries based on location of customer. (b) Canpotex is the export association of two Saskatchewan potash producers. The net sales of potash from Mosaic to Canpotex included in our consolidated financial statements in the Net Sales line represent Mosaic’s sales of potash to Canpotex, and are recognized upon delivery to the unrelated third-party customer. Canpotex sales to the ultimate third-party customers are approximately: 30% to customers based in Brazil, 14% to customers based in Indonesia, 11% to customers based in China, 6% to customers based in India, and 39% to customers based in the rest of the world.
Financial information relating to our operations by geographic area	December 31, (in millions) 2021 2020 Long-lived assets: Canada $ 5,012.2 $ 4,998.5 Brazil 2,011.0 1,904.1 Other 1,285.0 1,324.8 Total international countries 8,308.2 8,227.4 United States 6,233.6 5,688.8 Consolidated $ 14,541.8 $ 13,916.2 Excluded from the table above as of December 31, 2021 and 2020, are goodwill of $1,172.2 million and $1,173.0 million and deferred income taxes of $997.1 million and $1,179.4 million, respectively.
Sales by product type	Net sales by product type for the years 2021, 2020 and 2019 are as follows: Years Ended December 31, (in millions) 2021 2020 2019 Sales by product type: Phosphate Crop Nutrients $ 3,552.7 $ 2,477.0 $ 2,541.3 Potash Crop Nutrients 3,367.9 2,566.7 2,716.8 Crop Nutrient Blends 1,800.0 1,232.7 1,415.7 Performance Products (a) 1,973.6 1,370.8 1,193.6 Phosphate Rock 75.5 42.0 53.6 Other (b) 1,587.7 992.5 985.3 $ 12,357.4 $ 8,681.7 $ 8,906.3 ______________________________ (a) Includes sales of MicroEssentials ® , K-Mag ® , Aspire ® and Sus-Terra™ (b) Includes sales of industrial potash, feed products, nitrogen and other products.

Organization and Nature of Bu_2

Organization and Nature of Business (Details)	12 Months Ended
	Dec. 31, 2021	Jan. 08, 2018
Schedule of Equity Method Investments
Equity method investment, ownership percentage	33.00%
Miski Mayo Joint Venture
Schedule of Equity Method Investments
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage		75.00%
MWSPC
Schedule of Equity Method Investments
Equity method investment, ownership percentage	25.00%
Percentage Of Total Production Expected To Market	25.00%

Leases Operating and Finance Le

Leases Operating and Finance Lease Assets and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Schedule of Lease Assets and Liabilites [Line Items]
Lessee, Operating and Finance Lease, Maximum Term of Lease Contract	29 years
Finance and Operating Leases, Maximum Lease Extension Term	10 years
Operating Lease, Right-of-Use Asset	$ 120.2	$ 173.1
Operating Lease, Liability, Current	59.7	64
Operating Lease, Liability, Noncurrent	64.3	109.6
Operating Lease, Liability	124
Finance Lease, Right-of-Use Asset	459.1	457.9
Less: accumulated depreciation	122.8	89.3
Finance Lease, Right-of-Use Asset, Net	336.3	$ 368.6
Finance Lease, Liability	$ 213
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other noncurrent liabilities	Other noncurrent liabilities
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Long-term Debt
Schedule of Lease Assets and Liabilites [Line Items]
Finance Lease, Liability, Noncurrent	$ 171.8	$ 294.6
Current Maturities of Long-Term Debt
Schedule of Lease Assets and Liabilites [Line Items]
Finance Lease, Liability, Current	41.2	49.9
Liabilities, Total
Schedule of Lease Assets and Liabilites [Line Items]
Operating Lease, Liability	124	173.6
Finance Lease, Liability	$ 213	$ 344.5

Leases Components of Lease Expe

Leases Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease Cost	$ 78.8	$ 81.7	$ 98.4
Finance Lease, Right-of-Use Asset, Amortization	40.6	37.7	28.3
Finance Lease, Interest Expense	6.3	13.3	15.2
Short-term Lease Cost	3.1	3.1	10.5
Variable Lease Cost	19.2	21.8	21.5
Total Lease Cost	148	157.6	173.9
Operating Lease, Payments	78.8	96.6	107.9
Finance Lease, Interest Payment on Liability	6.3	8.4	10.7
Finance Lease, Principal Payments	142.5	46.9	41.3
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	18.4	22.4	56
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 8.9	36.4	88.2
Operating Lease, Weighted Average Remaining Lease Term	4 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	3 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	4.80%
Finance Lease, Weighted Average Discount Rate, Percent	2.40%
Direct Costs of Leased and Rented Property or Equipment	$ 211.8	$ 226.9	$ 249.1

Leases Future Minimum Lease Pay

Leases Future Minimum Lease Payments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 63.3
Capital Leases, Future Minimum Payments Due, Next Twelve Months	45.4
Operating Leases, Future Minimum Payments, Due in Two Years	29.7
Capital Leases, Future Minimum Payments Due in Two Years	70.9
Finance Lease, Liability, to be Paid, Year Three	86.9
Operating Leases, Future Minimum Payments, Due in Three Years	18.6
Operating Leases, Future Minimum Payments, Due in Four Years	7.1
Capital Leases, Future Minimum Payments Due in Four Years	4.8
Operating Leases, Future Minimum Payments, Due in Five Years	3.1
Capital Leases, Future Minimum Payments Due in Five Years	4
Operating Leases, Future Minimum Payments, Due Thereafter	17.7
Capital Leases, Future Minimum Payments Due Thereafter	10.8
Operating Leases, Future Minimum Payments Due	139.5
Finance Lease, Liability, Payment, Due	222.8
Operating Leases, Imputed Interest	(15.5)
Finance Leases, Imputed Interest	(9.8)
Operating Lease, Liability	124
Finance Lease, Liability	$ 213
Schedule of Future Minimum Lease Payments for Operating and Finance Leases [Line Items]
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current maturities of long-term debt	Current maturities of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term Debt and Lease Obligation	Long-term Debt and Lease Obligation
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Finance Lease, Liability	$ 213

Other Financial Statement Dat_2

Other Financial Statement Data (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Receivables
Trade		$ 954.6	$ 632.8
Accounts Receivable, Related Parties, Current		390.1	99.7
Non-trade		187.7	149
Accounts Receivable, before Allowance for Credit Loss		1,532.4	881.5
Less: Allowance for doubtful accounts		0.5	0.4
Current receivables, net		1,531.9	881.1
Inventories
Raw materials		296.6	92.1
Work in process		741.1	634.5
Finished goods		1,534.3	868.2
Deferred Costs	[1]	31.4	23
Operating materials and supplies		138	121.4
Inventory, net		2,741.4	1,739.2
Other current assets
Income and other taxes receivable		126.1	181.4
Prepaid expenses		107.3	80.4
Other		49.1	65.1
Total other current assets		282.5	326.9
Other Assets
Restricted cash		8.5	12.3	$ 5.4
MRO inventory		144.7	137.7
Debt Securities, Available-for-sale, Restricted		731.5	734.3
Operating Lease, Right-of-Use Asset		120.2	173.1
Indemnification asset		21	23
Long-term receivable		41.5	52.6
Other		307.3	255.8
Other Assets, Noncurrent		1,374.7	1,388.8
Accrued liabilities
Accrued dividends		43.6	20.4
Payroll and employee benefits		235.9	195.5
Asset retirement obligations		222.4	190.2
Customer prepayments		437.7	287.6
Accrued Income Taxes		184.3	83.1
Operating Lease, Liability, Current		59.7	64
Servicing Liability		81.1	0
Other		618.9	392.3
Total accrued liabilities, current		1,883.6	1,233.1
Other noncurrent liabilities
Asset retirement obligations		1,526.9	1,203.7
Operating Lease, Liability, Noncurrent		64.3	109.6
Accrued pension and postretirement benefits		114.4	158.5
Unrecognized tax benefits		156.6	46.4
Other		239.9	235.3
Total other noncurrent liabilities		2,102.1	1,753.5
Interest expense, net was comprised of the following:
Interest income		25.2	33.5	33.1
Less interest expense		194.3	214.1	216
Interest expense, net		(169.1)	(180.6)	$ (182.9)
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Operating Lease, Right-of-Use Asset		120.2	173.1
Other Noncurrent Assets
Other Assets
Operating Lease, Right-of-Use Asset		120.2	173.1
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Operating Lease, Right-of-Use Asset		$ 120.2	$ 173.1
[1]	Final price deferred is product that has shipped to customers, but we retain control and do not recognize revenue until a sales contract has been agreed to with the customer.

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 20,713.4	$ 19,961.1
Less: accumulated depreciation and depletion	8,238.1	8,106.8
Property, plant and equipment, net	12,475.3	11,854.3
Capitalized interest on major construction projects	30.1	33.3	$ 28.5
Depreciation	811.8	846.4	$ 877.6
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	341.6	325.7
Mining properties and rights
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	5,791.3	5,035.2
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	3,452.5	3,306.2
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	9,893.6	9,846.9
Construction in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 1,234.4	$ 1,447.1

Investments in Non-Consolidat_3

Investments in Non-Consolidated Companies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Schedule of Equity Method Investments
Equity method investment, ownership percentage	33.00%
Revenues	$ 12,357.4	$ 8,681.7		$ 8,906.3
Net earnings (loss) including noncontrolling interest	1,634.9	665.6		(1,090.8)
Equity in net earnings (loss) of nonconsolidated companies	7.8	(93.8)		(59.4)
Assets	22,036.4	19,789.8	[1]	19,298.5
Equity Method Investment, Underlying Equity in Net Assets	$ 466.9	452.5		554.7
Gulf Sulphur Services
Schedule of Equity Method Investments
Equity method investment, ownership percentage	50.00%
River Bend Ag
Schedule of Equity Method Investments
Equity method investment, ownership percentage	50.00%
I F C
Schedule of Equity Method Investments
Equity method investment, ownership percentage	45.00%
Canpotex
Schedule of Equity Method Investments
Equity method investment, ownership percentage	36.20%
Equity Method Investee | MWSPC
Schedule of Equity Method Investments
Equity method investment, ownership percentage	25.00%
Proportion of assets represented by MWSPC	70.00%
Proportion of liabilities represented by MWSPC	65.00%
Equity in net earnings (loss) of nonconsolidated companies	$ 5	(97.3)		(62.1)
Equity Method Investments [Member]
Schedule of Equity Method Investments
Revenues	4,758.2	3,463.2		4,058.5
Net earnings (loss) including noncontrolling interest	70.1	(405.3)		(215)
Assets	10,685.6	8,944.4		9,682.5
Liabilities	$ 8,864.7	$ 7,184.9		$ 7,512.7
[1]	In 2019, we recorded an impairment of goodwill in Phosphates of $588.6 million, which reduced the total asset balance

Investments in Non-Consolidat_4

Investments in Non-Consolidated Companies - MWSPC Joint Venture (Details) t in Millions, $ in Millions	Jul. 01, 2016USD ($)	Jun. 30, 2014USD ($)financialinstitution	Dec. 31, 2021USD ($)t	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Aug. 19, 2021USD ($)	Apr. 30, 2017USD ($)	Nov. 18, 2016USD ($)
Schedule of Equity Method Investments
Equity in net earnings (loss) of nonconsolidated companies			$ 7.8	$ (93.8)	$ (59.4)
MWSPC line of credit facility, maximum borrowing capacity			2,500			$ 2,500		$ 2,200
Investments in nonconsolidated companies			$ 691.8	673.1
Equity Method Investee | MWSPC
Schedule of Equity Method Investments
Payments to Acquire Equity Method Investments	$ 120
Proportion of assets represented by MWSPC			70.00%
Proportion of liabilities represented by MWSPC			65.00%
Equity in net earnings (loss) of nonconsolidated companies			$ 5	$ (97.3)	(62.1)
Aggregate cost of investment in phosphates greenfield mine including Mosaic's portion to date			$ 8,000
Annual production of finished product (Tonnes) | t			3
Percentage Of Total Production Expected To Market			25.00%
Number of lenders in MWSPC credit facility | financialinstitution		20
MWSPC line of credit facility, maximum borrowing capacity		$ 5,000			$ 506		$ 560
After project completion, number of months of shareholder tax amounts and severance fees for which the joint venture parties may have exposure			36
Loans Payable							$ 1,100
Investments in nonconsolidated companies			$ 770
Equity Method Investee | MWSPC | Maximum
Schedule of Equity Method Investments
Total cash investment from investors to acquire interest in MWSPC		$ 2,400

Goodwill (Details)

Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Beginning balance	$ 1,173	$ 1,156.9
Goodwill, Foreign Currency Translation Gain (Loss)	(0.8)	16.1
Ending balance	1,172.2	1,173	$ 1,156.9
Goodwill, Impairment Loss	0	0	588.6
Goodwill determined to be tax deductible	3
Potash Segment
Goodwill [Line Items]
Beginning balance	1,063.2	1,039.8
Goodwill, Foreign Currency Translation Gain (Loss)	1	23.4
Ending balance	1,064.2	1,063.2	1,039.8
Mosaic Fertilizantes
Goodwill [Line Items]
Beginning balance	97.7	105
Goodwill, Foreign Currency Translation Gain (Loss)	(1.8)	(7.3)
Ending balance	95.9	97.7	105
Corporate Eliminations And Other Segment
Goodwill [Line Items]
Beginning balance	12.1	12.1
Goodwill, Foreign Currency Translation Gain (Loss)	0	0
Ending balance	$ 12.1	$ 12.1	12.1
Phosphates Segment
Goodwill [Line Items]
Goodwill, Impairment Loss			$ 588.6
Minimum
Goodwill [Line Items]
Terminal Value Growth Rate	2.00%

Financing Arrangements - Mosaic

Financing Arrangements - Mosaic Credit Facility (Details)	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Aug. 19, 2021USD ($)	Nov. 18, 2016USD ($)
Debt Instrument
The Mosaic Credit Facility amount of revolving credit loans	$ 2,500,000,000			$ 2,500,000,000	$ 2,200,000,000
A failure to pay principal or interest under any one item of other indebtedness in excess of $100 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	$ 100,000,000
Debt Instrument, Covenant, Consolidated Capitalization Ratio, Minimum	0.65
Debt Instrument, Covenant, Consolidated Capitalization Ratio, Maximum	1
Debt Instrument, Covenant, Interest Coverage Ratio, Maximum	$ 3
Credit facility, interest coverage ratio, minimum	1
Letters of Credit Outstanding, Amount	50,000,000
Short-term Debt
Debt Instrument
Letters of Credit Outstanding, Amount	54,700,000
Mosaic Credit Facility
Debt Instrument
Letters of Credit Outstanding, Amount	10,900,000	$ 12,400,000
Net available borrowings for revolving loans under the Mosaic Credit Facility	$ 2,490,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.15%	0.40%	0.20%
Line of Credit Facility, Commitment Fee Amount	$ 7,000,000	$ 6,000,000	$ 4,000,000

Financing Arrangements - Short-

Financing Arrangements - Short-term Debt (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Jan. 07, 2020USD ($)
Short-term Debt [Line Items]
Short-term debt	$ 302.8	$ 0.1
Inventory Financing Arrangement, Maximum Amount			$ 400
Inventory Financing Arrangement, Maximum Borrowing Capacity, Percentage	0.90
Line of Credit Facility, Current Borrowing Capacity	$ 400
Receivable Factoring Liability	81.1
Structured accounts payable arrangements	743.7	640
Receivable Purchasing Agreement [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Current Borrowing Capacity	250
Receivable Purchasing Arrangements Sold	589.7	$ 302
Inventory Financing Arrangement
Short-term Debt [Line Items]
Proceeds From Inventory Financing Arrangements	302.7
Line of Credit Facility, Current Borrowing Capacity	$ 625

Financing Arrangements - Long-t

Financing Arrangements - Long-term debt - Stated value (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020
Stated interest rates:
Long-term debt, prepayment	$ 450
Long-term Debt, Excluding Current Maturities
Stated value of issued debt	3,975		$ 4,570.4
Fair value adjustment of debt	10.4		12.9
Debt Instrument, Unamortized Discount	6.6		5.3
Total long term debt	3,978.8		4,578
Stated value of current portion of issued debt	594.8		502.9
Fair value adjustment of current portion of long-term debt	2.3		2.3
Debt Instrument, Unamortized Discount, Current	0.5		1
Carrying Value, current portion	596.6		504.2
Stated value of noncurrent portion of issued debt	3,380.2		4,067.5
Fair Market Value Adjustment, Total long term debt noncurrent	8.1		10.6
Debt Instrument, Unamortized Discount, Noncurrent	6.1		4.3
Total long-term debt, less current maturities	3,382.2		4,073.8
Maturities of Long-term Debt
2022	596.6
2023	996.2
2024	103.1
2025	15.7
2026	15.7
Thereafter	2,251.5
Total long term debt	$ 3,978.8		4,578
Senior Notes | Senior Notes Due 2022 [Member]
Stated interest rates:
Stated interest rate	3.25%
Long term debt including current maturities	$ 550
Senior Notes | Senior Notes Due 2027 [Member]
Stated interest rates:
Stated interest rate	4.05%
Long term debt including current maturities	$ 700
Senior Notes | Senior Notes Due 2023
Stated interest rates:
Stated interest rate	4.25%
Long term debt including current maturities	$ 900
Senior Notes | Senior Notes Due 2033
Stated interest rates:
Stated interest rate	5.45%
Long term debt including current maturities	$ 500
Senior Notes | Senior Notes Due 2043
Stated interest rates:
Stated interest rate	5.625%
Long term debt including current maturities	$ 600
Senior Notes | Senior Notes Due 2041
Stated interest rates:
Stated interest rate	4.875%
Long term debt including current maturities	$ 300
Senior Notes | Senior Notes Due 2021
Stated interest rates:
Stated interest rate	3.75%
Debentures | Debentures Due 2028
Stated interest rates:
Long term debt including current maturities	$ 147.1
Unsecured Notes
Stated interest rates:
Effective interest rate	5.18%
Long-term Debt, Excluding Current Maturities
Stated value of issued debt	$ 3,550		4,000
Fair value adjustment of debt	0		0
Debt Instrument, Unamortized Discount	6.6		5.3
Total long term debt	$ 3,543.4		3,994.7
Maturity year - earliest	Jan. 1, 2022
Maturity year - latest	Dec. 31, 2043
Maturities of Long-term Debt
Total long term debt	$ 3,543.4		3,994.7
Unsecured Notes | Minimum
Stated interest rates:
Stated interest rate	3.25%
Unsecured Notes | Maximum
Stated interest rates:
Stated interest rate	5.63%
Unsecured Debentures
Stated interest rates:
Effective interest rate	7.19%
Long-term Debt, Excluding Current Maturities
Stated value of issued debt	$ 147.1		147.1
Fair value adjustment of debt	0.7		0.9
Debt Instrument, Unamortized Discount	0		0
Total long term debt	$ 147.8		148
Maturity year - latest	Dec. 31, 2028
Maturities of Long-term Debt
Total long term debt	$ 147.8		148
Unsecured Debentures | Minimum
Stated interest rates:
Stated interest rate	0.00%
Unsecured Debentures | Maximum
Stated interest rates:
Stated interest rate	7.30%
Finance Leases
Stated interest rates:
Effective interest rate	2.39%
Long-term Debt, Excluding Current Maturities
Stated value of issued debt	$ 213		344.5
Fair value adjustment of debt	0		0
Debt Instrument, Unamortized Discount	0		0
Total long term debt	$ 213		344.5
Maturity year - earliest	Jan. 1, 2022
Maturity year - latest	Dec. 31, 2030
Maturities of Long-term Debt
Total long term debt	$ 213		344.5
Finance Leases | Minimum
Stated interest rates:
Stated interest rate	0.60%
Finance Leases | Maximum
Stated interest rates:
Stated interest rate	19.72%
Other
Stated interest rates:
Effective interest rate	4.08%
Long-term Debt, Excluding Current Maturities
Stated value of issued debt	$ 64.9	[1]	78.8
Fair value adjustment of debt	9.7		12
Debt Instrument, Unamortized Discount	0		0
Total long term debt	$ 74.6	[1]	90.8
Maturity year - earliest	Jan. 1, 2022
Maturity year - latest	Dec. 31, 2026
Maturities of Long-term Debt
Total long term debt	$ 74.6	[1]	$ 90.8
Other | Minimum
Stated interest rates:
Stated interest rate	6.53%
Other | Maximum
Stated interest rates:
Stated interest rate	8.00%
[1]	Includes deferred financing fees related to our long term debt.

Marketable Securities Held in_3

Marketable Securities Held in Trusts (Details) $ in Millions	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Aug. 31, 2016USD ($)
Investments, Debt and Equity Securities [Abstract]
Amount deposited by Mosaic into the RCRA Trusts			$ 630
Number Of Decades Remaining For Trust			3
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	$ 710.3	$ 696.3
Gross Unrealized Gains	12.1	27.5
Gross Unrealized Losses	(7.5)	(0.4)
Total debt securities	714.9	723.4
Cash And Cash Equivalents | Fair Value Inputs Level 1
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	8.1	11.8
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Total debt securities	8.1	11.8
Corporate Debt Securities | Fair Value Inputs Level 2
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	198.8	193.3
Gross Unrealized Gains	5.6	14
Gross Unrealized Losses	(0.9)	0
Total debt securities	203.5	207.3
Municipal Bonds | Fair Value Inputs Level 2
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	198.1	190.5
Gross Unrealized Gains	6.5	8.8
Gross Unrealized Losses	(0.5)	(0.3)
Total debt securities	204.1	199
U.S. Government Bonds | Fair Value Inputs Level 2
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	305.3	300.7
Gross Unrealized Gains	0	4.7
Gross Unrealized Losses	(6.1)	(0.1)
Total debt securities	$ 299.2	$ 305.3

Marketable Securities Held in_4

Marketable Securities Held in Trusts - Continuous Loss Position (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 259.2	$ 137.8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3.8	0.1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	151.5	4.6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	3.7	0.3
Corporate Debt Securities
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	67.1	1.5
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0.1	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	3.6	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0.8	0
Municipal Bonds
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	39.9	16
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0.1	0.1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	4.5	4.6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0.4	0.2
U.S. Government Bonds
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	152.2	120.3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3.6	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	143.4	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 2.5	$ 0.1

Marketable Securities Held in_5

Marketable Securities Held in Trusts - Maturity Dates and Realized Gain and Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Realized Loss	$ (3.4)	$ (1.5)
Debt Securities, Available-for-sale, Realized Gain	5.8	17.7
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total debt securities	714.9	$ 723.4
Debt Securities [Member]
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Due in one year or less	26.4
Due after one year through five years	351.9
Due after five years through ten years	293.9
Due after ten years	34.6
Total debt securities	$ 706.8

Income Taxes Provision for Taxe

Income Taxes Provision for Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ (12.7)	$ (22)	$ (75.5)
State	5.6	1.3	(5.2)
Non-U.S.	386.9	114.4	119.1
Total current	379.8	93.7	38.4
Noncurrent:
Federal	0	0	0
Non-U.S.	110	3.2	0
Total noncurrent	110	3.2	0
Deferred:
Federal	141.9	(66.7)	(194.8)
State	21.4	(12.9)	(6.7)
Non-U.S.	(55.4)	(595.8)	(61.6)
Total deferred	107.9	(675.4)	(263.1)
Provision for (benefit from) income taxes	$ 597.7	$ (578.5)	$ (224.7)

Income Taxes Effective Tax Rate

Income Taxes Effective Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax [Line Items]
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 900.1	$ (449)	$ (1,096.2)
Income (Loss) from Continuing Operations before Income Taxes, Foreign	1,324.7	629.9	(159.9)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	$ 2,224.8	$ 180.9	$ (1,256.1)
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation
Computed tax at the U.S. federal statutory rate	21.00%	21.00%	21.00%
State and local income taxes, net of federal income tax benefit	1.20%	(7.00%)	2.60%
Percentage depletion in excess of basis	(1.10%)	(10.30%)	2.50%
Impact of non-U.S. earnings	6.30%	42.10%	5.30%
Change in valuation allowance	(0.30%)	(330.00%)	(3.10%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent	0.00%	0.00%	(5.00%)
Other items (none in excess of 5% of computed tax)	5.50%	0.00%	(5.40%)
Effective tax rate	26.90%	(319.80%)	17.90%
Effective Income Tax Rate Reconciliation, Amounts
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount			$ (79.6)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount			14
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	$ (1.2)	$ 2.7	$ 4.8
Refund of Future Alternative Minimum Tax Credits		(5.5)
Effective Income Tax Rate Reconciliation, CARES Act, Amount		$ (23.6)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent	(5.70%)	(35.60%)	0.00%
Effect of Tax Cuts and Jobs Act [Abstract]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (91.7)	$ 774.1	$ 73.4
Valuation allowance	774.7	683	1,457.1	$ 1,530.5
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	0.6	(609)	(355.6)
United States Tax Cuts and Jobs Act Law
Effective Income Tax Rate Reconciliation, Amounts
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount			21.2
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount			12.5
Foreign and Domestic Tax Authority
Effective Income Tax Rate Reconciliation, Amounts
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount			(15.9)
Foreign Tax Authority
Effective Income Tax Rate Reconciliation, Amounts
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	20.4
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount		582.6
Effect of Tax Cuts and Jobs Act [Abstract]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	(3.4)	(32.2)	(9.2)
Domestic Tax Authority
Effective Income Tax Rate Reconciliation, Amounts
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	23.9
Colonsay Mine Idle
Effective Income Tax Rate Reconciliation, Amounts
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Amount			(263.4)
Plant City Closure
Effective Income Tax Rate Reconciliation, Amounts
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Amount			$ (81)
Esterhazy Mine Closure
Effective Income Tax Rate Reconciliation, Amounts
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Amount	(43.7)
Foreign Tax Credit Carryforward
Effect of Tax Cuts and Jobs Act [Abstract]
Valuation allowance	364.7
Tax Credit Carryforward, Amount	775.1
Anticipatory Foreign Tax Credit Carryforward
Effect of Tax Cuts and Jobs Act [Abstract]
Valuation allowance	$ 229.6	$ 235.5

Income Taxes Deferred Tax (Deta

Income Taxes Deferred Tax (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Liabilities, Gross [Abstract]
Depreciation and amortization	$ 456.2	$ 232.5
Depletion	430.1	527
Partnership tax basis differences	66.3	69
Undistributed earnings of non-U.S. subsidiaries	0	3.8
Other liabilities	39.1	32.5
Total deferred tax liabilities	991.7	864.8
Before valuation allowance
Deferred revenue	0	62.4
Capital loss carryforwards	0	0.1
Foreign tax credit carryforwards	775.1	628.6
Net operating loss carryforwards	232.3	321.8
Pension plans and other benefits	19.8	34.2
Asset retirement obligations	337.3	262.9
Disallowed interest expense under 163(j)	31.6	68.8
Other assets	351.2	287.6
Subtotal	1,747.3	1,666.4
Net of valuation allowance
Valuation allowance	774.7	683	$ 1,457.1	$ 1,530.5
Deferred Tax Assets, Net of Valuation Allowance	972.6	983.4
Deferred Tax Assets, Net		118.6
Deferred Tax Liabilities, Net	(19.1)
Anticipatory Foreign Tax Credit Carryforward
Net of valuation allowance
Valuation allowance	229.6	235.5
Deferred Tax Liabilities and Assets [Line Items]
Deferred Tax Assets Foreign Tax Credits Netted Against Related Deferred Tax Liabilities	$ 185.1	$ 191

Income Taxes Carryforwards (Det

Income Taxes Carryforwards (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Tax Credit Carryforward [Line Items]
Valuation allowance	$ 774.7	$ 683	$ 1,457.1	$ 1,530.5
Undistributed Earnings of Foreign Subsidiaries	2,300
Net Operating Loss Carryforward
Tax Credit Carryforward [Line Items]
Net operating loss	1,500
Foreign Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	775.1
Valuation allowance	364.7
Foreign Tax Credit Carryforward | Tax Year 2023 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	33.3
Foreign Tax Credit Carryforward | Tax Year 2026 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	332.7
Foreign Tax Credit Carryforward | Tax Year 2029 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	20.2
Foreign Tax Credit Carryforward | Tax Year 2030 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	$ 14.6
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Maximum percentage of annual taxable income allowed to use of the tax credit carryforward	30.00%
Foreign Tax Authority | Net Operating Loss Carryforward
Tax Credit Carryforward [Line Items]
Net operating loss	$ 507.6
Domestic Tax Authority | Net Operating Loss Carryforward
Tax Credit Carryforward [Line Items]
Maximum Period to Utilize Tax Credits	20 years
Non-US
Tax Credit Carryforward [Line Items]
General Business Deferred Tax Assets	$ 3.9

Income Taxes Income Tax Valuati

Income Taxes Income Tax Valuation Allowance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 91.7	$ (774.1)	$ (73.4)
Deferred Tax Assets, Valuation Allowance, Net	774.7	683	1,457.1
Tax Credit Carryforward, Valuation Allowance	111.2		49.8
Operating Loss Carryforwards, Valuation Allowance		24.1	6.8
PERU
Valuation Allowance [Line Items]
Operating Loss Carryforwards, Valuation Allowance		0.9	8.3
Foreign Tax Authority
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	3.4	32.2	9.2
United States
Valuation Allowance [Line Items]
Operating Loss Carryforwards, Valuation Allowance	2.4	3.5
Vale Fertilizantes S.A.
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 13.9	$ 763.5	$ 48

Income Taxes Uncertain Tax Prov

Income Taxes Uncertain Tax Provisions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Changes in unrecognized tax benefits for all jurisdictions were as follows:
Gross unrecognized tax benefits, beginning of period	$ 36.9	$ 39.5	$ 38.1
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	84.7	0	0
Current year tax positions	3	2.8	5.1
Prior year tax positions - decreases	0	(5.9)	(4.9)
Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation	0		1.2
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation		0.5
Gross unrecognized tax benefits, end of period	124.6	36.9	$ 39.5
Income Tax Contingency [Line Items]
The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate in future periods	48
Accrued interest and penalties related to unrecognized tax benefits, which are reflected in other noncurrent liabilities	31.1	$ 9
Decrease in Unrecognized Tax Benefits is Reasonably Possible	96.5
Non-US
Income Tax Contingency [Line Items]
Prior year tax positions - increases	87.7
US and non-US [Domain]
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits That Impacted Effective Tax Rate	$ 3

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]
Asset retirement obligations, beginning of period	$ 1,393.9	$ 1,315.2
Liabilities incurred	20.2	10.8
Liabilities settled	(163.1)	(125.1)
Accretion expense	71.9	68	$ 62.4
Revisions in estimated cash flows	443.3	167.3
Foreign currency translation	(16.9)	(42.3)
Asset retirement obligations, end of period	1,749.3	1,393.9	$ 1,315.2
Less current portion	222.4	190.2
Asset retirement obligations	$ 1,526.9	$ 1,203.7

Asset Retirement Obligations Co

Asset Retirement Obligations Contingencies - Gypstack (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Discounted asset retirement obligation	$ 1,749.3	$ 1,393.9	$ 1,315.2
Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Discounted asset retirement obligation	883.2	$ 669.9
2015 Consent Decrees With EPA | Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Expected capital improvements and expenses	20
Asset retirement obligations, undiscounted	1,800
Discounted asset retirement obligation	$ 603

Asset Retirement Obligations Ot

Asset Retirement Obligations Other Commitments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jul. 27, 2018
Other Commitments [Line Items]
Assets held-in-trust, current	$ 1,749.3	$ 1,393.9	$ 1,315.2
Asset retirement obligations	1,526.9	1,203.7
Bonnie Facility Trust
Other Commitments [Line Items]
Asset retirement obligations				$ 21
Plant City and Bonnie Facilities [Member]
Other Commitments [Line Items]
Surety Bonds Outstanding Delivered To EPA	249.7
Asset retirement obligations	$ 262.9	$ 251.8

Derivatives - Gross Assets and

Derivatives - Gross Assets and Liabilities Positions (Details) MMBTU in Millions, $ in Millions	Dec. 31, 2021USD ($)MMBTU	Dec. 31, 2020USD ($)MMBTU
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross asset position	$ 45.3	$ 65.3
Gross liability position	45.5	49.9
Foreign Exchange Contract
Derivative
Derivative, notional amount	$ 3,185.8	$ 2,912.3
Interest Rate Swap Contract
Derivative
Number of Interest Rate Derivatives Held	0	0
Commodity Contract (MMbtu)
Derivative
Derivative, nonmonetary notional amount | MMBTU	23.6	27.3

Derivatives - Credit Risk Relat

Derivatives - Credit Risk Related Contingent Features (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivative, Credit Risk Related Contingent Features
The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a liability position	$ 8.6	$ 11.3
Required collateral assets to be posted if the credit-risk contingent features of these underlying agreements were triggered.	$ 4.5

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis
Gross asset position	$ 45.3	$ 65.3
Gross liability position	$ 45.5	49.9
Fair Value, Measurements, Recurring | Foreign Exchange Contract
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis
Average maturity of foreign currency derivative instruments	18 months
Gross asset position	$ 27	58.6
Gross liability position	45.4	48.7
Fair Value, Measurements, Recurring | Commodity Contract
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis
Gross asset position	18.3	6.7
Gross liability position	$ 0.1	$ 1.2

Fair Value Financial Instrument

Fair Value Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Cash and cash equivalents	$ 769.5	$ 574
Accounts receivable	1,531.9	881.1
Accounts payable	1,260.7	769.1
Structured accounts payable arrangements	743.7	640
Short-term debt	302.8	0.1
Long-term debt, including current portion	3,978.8	4,578
Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Cash and cash equivalents	769.5	574
Accounts receivable	1,531.9	881.1
Accounts payable	1,260.7	769.1
Structured accounts payable arrangements	743.7	640
Short-term debt	302.8	0.1
Long-term debt, including current portion	$ 4,516.1	$ 5,172.1

Guarantees and Indemnities (Det

Guarantees and Indemnities (Details) $ in Millions	Dec. 31, 2021USD ($)
Brazilian Financial Parties
Guarantor Obligations [Line Items]
Guarantee Obligations Maximum Exposure	$ 67.7

Pension Plans and Other Bene_10

Pension Plans and Other Benefits Postretirement Medical Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment	$ (17.3)	$ 0
Defined Benefit Plan, Plan Assets, Amount	807	845.2
Liability, Defined Benefit Plan, Noncurrent	(114.4)	(158.5)
Prior service costs	(14.8)	0
North American Other Postretirement Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Benefit Obligation	31.1	35
Brazil Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.3	1
Interest cost	6.6	7.9
Actuarial loss	(22.8)	7.9
Currency fluctuations	(3.9)	(27.7)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(1.7)	(1.7)
Defined Benefit Plan, Benefit Obligation	58	96.8	$ 109.4
Company contribution	1.7	1.7
Defined Benefit Plan, Plan Assets, Benefits Paid	(1.7)	(1.7)
Defined Benefit Plan, Plan Assets, Amount	0	0
Funded status of the plans as of the end of period	(58)	(96.8)
Liability, Defined Benefit Plan, Current	0	(1.7)
Liability, Defined Benefit Plan, Noncurrent	(58)	(95.1)
Actuarial loss	$ 16.1	$ 42.6
Discount rate	7.69%	7.45%
Minimum | North American Other Postretirement Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 2.9

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ (1,891.8)	$ (1,806.2)	$ (1,598.2)	$ (1,657.1)
Net Gain (Loss) on Interest Rate Swaps Qualifying as Hedge, After Reclassification, Before Tax	1.5	1.6	1.7
Other Comprehensive Income (Loss), Before Tax	(81.2)	(215.3)	64.1
Other Comprehensive Income (Loss), Tax	(6.2)	0.1	(6.4)
Net Gain (Loss) on Marketable Securities Held in Trust, After Reclassification and Tax	(17.6)	12.8	10.9
Other Comprehensive Income (Loss), Net of Tax	(87.4)	(215.2)	57.7
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	1.8	7.2	1.2
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	1.3	18.9	6.1	(4.8)
Net Unrealized Holding Gain (Loss) on Marketable Securities Held in Trust, Before Tax	(22.7)	16.6	14
Net Gain (Loss) on Marketable Securities Held in Trust, Tax	5.1	(3.8)	(3.1)
Net Gain (Loss) on Marketable Securities Held in Trust, After Reclassification and Tax	(17.6)	12.8	10.9
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	0	0	0
AOCI, Derivative Qualifying as Hedge, Excluded Component, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	5.2	3.7	2.1	0.4
Net Gain (Loss) on Interest Rate Swaps Qualifying as Hedge, After Reclassification, Before Tax	2	2	2.2
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, Tax	0.5	0.4	0.5
Net Gain (Loss) on Interest Rate Swaps Qualifying as Hedge, After Reclassification and Tax	1.5	1.6	1.7
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	0	0	0
Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(72.8)	(109.7)	(129.6)	(105.3)
Net Actuarial Gain (Loss), After Reclassification, Before Tax	56.5	12.2	(26.2)
Other Comprehensive Income (Loss), Tax	(19.6)	7.7	1.9
Net Actuarial Gain (Loss), After Reclassification and Tax	36.9	19.9	(24.3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	0	0	0
Accumulated Foreign Currency Adjustment Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(1,825.5)	(1,719.1)	(1,476.8)	$ (1,547.4)
Foreign Currency Translation Gain (Loss), Before Tax	(117)	(246.1)	74.1
Foreign Currency Translation Adjustment, Tax (Expense) Benefit	8.8	(3.4)	(4.7)
Foreign Currency Translation Gain (Loss), Net of Tax	(108.2)	(249.5)	69.4
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	$ 1.8	$ 7.2	$ 1.2

Share Repurchases (Details)

Share Repurchases (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)shares
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount	$ 1,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	700
Stock Repurchased During Period, Value	$ 410.9
Stock Repurchased During Period, Shares | shares	11,200,371
Vale Fertilizantes S.A.
Equity, Class of Treasury Stock [Line Items]
Stock Repurchased During Period, Shares | shares	8,544,144

Share-based Payments (Details)

Share-based Payments (Details) shares in Millions	Dec. 31, 2021shares
2014 Mosaic Stock and Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares and share options authorized under plan	25
Omnibus Stock and Incentive Plan 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares and share options authorized under plan	25

Share-based Payments, Stock Opt

Share-based Payments, Stock Options (Details 2) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
The total intrinsic value of options exercised during the fiscal year	(3.2)
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of years the employee stock options vest in equal annual installments	3 years
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)				35.35%
Expected dividend yield (percent)				1.97%
Expected term (in years)				7 years
Risk-free interest rate (percent)				2.34%
Shares (in millions)
Number of option shares outstanding at beginning of period (in shares)	1.8
Granted (in shares)	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 29.21
Cancelled (in shares)	(0.6)
Number of option shares outstanding at end of period (in shares)	1.1	1.8
Number of shares issuable under options exercisable at end of period (in shares)	1.1
Weighted Average Exercise Price
Weighted average exercise price- options outstanding at beginning of period (in usd per share)	$ 43.89
Granted (in usd per share)	0
Cancelled (in usd per share)	58.56
Weighted Average Exercise Price- options outstanding at end of period (in usd per share)	38.47	$ 43.89
Weighted Average Exercise Price- options exercisable at end of period (in usd per share)	$ 38.47
The weighted-average grant date fair value of options granted during the fiscal year (in usd per share)				$ 9.91
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Contractual Term (Years) - options outstanding at end of fiscal year	3 years 4 months 24 days
Weighted Average Remaining Contractual Term (Years) - options exercisable as of the end of the fiscal year	3 years 4 months 24 days
Aggregate Intrinsic Value - options outstanding at end of fiscal year	$ 6.5
Aggregate Intrinsic Value - options exercisable as of the end of the fiscal year	$ 6.5
The total intrinsic value of options exercised during the fiscal year	(0.1)	0	0

Share-based Payments, RSU's (De

Share-based Payments, RSU's (Details 3) shares in Millions	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Restricted Stock Units R S U
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Shares (in millions)
Number of stock units outstanding at beginning of period (shares) | shares	2.5
Granted (in shares) | shares	0.7
Issued and canceled (shares) | shares	(0.8)
Number of stock units outstanding at end of period (shares) | shares	2.4
Weighted Average Grant Date Fair Value
Weighted-average grant date fair value per share - stock unit awards outstanding, beginning of period (in usd per share) | $ / shares	$ 21.48
Granted (in usd per share) | $ / shares	29.88
Issued and canceled (in usd per share) | $ / shares	26.15
Weighted-average grant date fair value per share - stock unit awards outstanding, end of period (in usd per share) | $ / shares	$ 22.44
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years

Share-based Payments, PSU's (De

Share-based Payments, PSU's (Details 4) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Weighted Average Grant Date Fair Value
Share-based compensation expense, net of forfeitures, in the fiscal year	$ 63.5	$ 24.5	$ 31.6
The tax benefit related to share-based compensation expense in the fiscal year	6.5	5.2	6.7
Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	$ 29.3
The average weighted-average period the unrecognized compensation cost will be recognized (years)	1 year
The total fair value of options vested during the fiscal year	$ 0	0	0
Proceeds from Stock Options Exercised	0	0	0
Tax benefit for tax deductions from options during the fiscal year	$ 14	$ 3.3	$ 2.6
TSR Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum retirement age for performance units to vest	60 years
Number Of Trading Days To Calculate Weighted Average Trading Price	30 days
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Expected volatility (percent)	58.26%	43.49%	33.70%
Expected dividend yield (percent)	0.68%	1.24%	0.72%
Expected term (in years)	3 years	3 years	3 years
Risk-free interest rate (percent)	0.32%	0.61%	2.43%
Shares (in millions)
Granted (in shares)	717,952	1,309,170	603,856
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value Per Share, Granted (in usd per share)	$ 27.91	$ 13.52	$ 25.87
Performance Units Cash Settled
Shares (in millions)
Granted (in shares)	262,308
Performance Units
Shares (in millions)
Number of stock units outstanding at beginning of period (shares)	2,600,000
Granted (in shares)	700,000
Issued and canceled (shares)	(500,000)
Number of stock units outstanding at end of period (shares)	2,800,000	2,600,000
Weighted Average Grant Date Fair Value
Weighted-average grant date fair value per share - stock unit awards outstanding, beginning of period (in usd per share)	$ 18.27
Weighted Average Grant Date Fair Value Per Share, Granted (in usd per share)	27.91
Issued and canceled (in usd per share)	27.50
Weighted-average grant date fair value per share - stock unit awards outstanding, end of period (in usd per share)	$ 18.91	$ 18.27

Commitments (Details)

Commitments (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)t	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Long-term Purchase Commitment
Purchases made under long-term commitments during the reporting period	$ 3,100	$ 1,900	$ 1,900
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity
2020	5,687.1
2021	966.5
2022	619.8
2023	354.9
2024	298.4
Subsequent years	1,174
Total	9,100.7
Purchases made for the fiscal period were as follows:
Purchases made under long-term commitments during the reporting period	3,100	$ 1,900	$ 1,900
Surety Bonds Outstanding
Total amount of surety bonds outstanding	645.7
Surety bonds outstanding for mining reclamation obligations	356.1
Surety bonds outstanding for other than mining reclamation obligations	$ 39.9
Inventories At Price Tied To Natural Gas
Long-term Purchase Commitment
Long-term Purchase Commitment, Minimum Quantity Required | t	545,000
Long Term Purchase Commitment Maximum Quantity Required | t	725,000

Contingencies (Details)

Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Oct. 24, 2016
Applicability, Impact and Conclusion of Environmental Loss Contingencies
Environmental contingency accrual		$ 57.3	$ 61.4
Brazilian subsidiary judicial and administrative proceedings
Loss Contingencies [Line Items]
Estimated loss contingency		56.7
Brazilian subsidiary labor claims
Loss Contingencies [Line Items]
Loss Contingency Accrual		49.5
Brazilian subsidiary other civil contingent liabilities and other claims
Loss Contingencies [Line Items]
Estimated loss contingency		2.3
Uberaba gypstacks settled litigation
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value	$ 0.3
Maximum | Brazilian subsidiary judicial and administrative proceedings
Loss Contingencies [Line Items]
Estimated loss contingency		706.2
Maximum | Brazilian Non Income Tax Proceedings
Loss Contingencies [Line Items]
Estimated loss contingency		380
Maximum | Brazilian Non Income Tax Proceedings | Indemnification Agreement
Loss Contingencies [Line Items]
Estimated loss contingency		182.7
Maximum | Brazilian Non Income Tax Proceedings | PIS And Cofins cases
Loss Contingencies [Line Items]
Estimated loss contingency		236.8
Maximum | Brazilian subsidiary labor claims
Loss Contingencies [Line Items]
Estimated loss contingency		548.3
Maximum | Brazilian subsidiary environmental claims
Loss Contingencies [Line Items]
Estimated loss contingency		19
Loss Contingency Accrual		4.9
Maximum | Brazilian subsidiary other civil contingent liabilities and other claims
Loss Contingencies [Line Items]
Estimated loss contingency		$ 138.8
Minimum | Water loss incident
Loss Contingencies [Line Items]
Financial assurance to support off-site monitoring and sinkhole remediation costs				$ 40

Related Party (Details)

Related Party (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2017
Related Party Transaction [Line Items]
Net amount due from our non-consolidated companies	$ 63
Net amount due to our non-consolidated companies		$ 55.9
Indemnification asset	$ 21	23
Equity method investment, ownership percentage	33.00%
Investee
Related Party Transaction [Line Items]
Indemnification asset	$ 21
Transactions with non-consolidated companies included in net sales	1,120.9	819.6	$ 969.5
Transactions with non-consolidated companies included in cost of goods sold	1,483.8	950.1	1,057.7
Beneficial Owner
Related Party Transaction [Line Items]
Allowance against bridge loans to affiliates		74.7	54.2
MWSPC | Equity Method Investee
Related Party Transaction [Line Items]
Transactions with non-consolidated companies included in net sales	$ 12.2	$ 8.5	$ 8.3
Percentage Of Total Production Expected To Market	25.00%
Equity method investment, ownership percentage	25.00%
Gulf Sulphur Services
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	50.00%
Gulf Sulphur Services | Beneficial Owner
Related Party Transaction [Line Items]
Guarantor Obligations, Number Of Vessels To Be Constructed				2
Equity method investment, ownership percentage	50.00%
Bridge loans to affiliates	$ 74.7
Allowance against bridge loans to affiliates	$ 54.2

Business Segments (Details)

Business Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 12,357.4		$ 8,681.7		$ 8,906.3
Intersegment Sales	0		0		0
Revenues	12,357.4		8,681.7		8,906.3
Gross margin	3,200.3		1,064.9		897.3
Canadian resource taxes)	259.5		146.1		174.6
Gross margin (excluding Canadian resource taxes)	(3,459.8)		(1,211)		(1,071.9)
Restructuring and related cost, incurred costs	158.1		0		1,462.1
Operating (loss) earnings	2,468.5		412.9		(1,094.9)
Capital expenditures	1,288.6		1,170.6		1,272.2
Depreciation, depletion and amortization expense	812.9		847.6		882.7
Equity in net earnings (loss) of nonconsolidated companies	7.8		(93.8)		(59.4)
Assets	22,036.4		19,789.8	[1]	19,298.5
Goodwill, Impairment Loss	0		0		588.6
Phosphates Segment
Segment Reporting Information [Line Items]
Net sales	3,889.7		2,543.5		2,416.6
Intersegment Sales	1,033.2		572.9		824.7
Revenues	4,922.9		3,116.4		3,241.3
Gross margin	1,305.4		125.5		(82.3)
Canadian resource taxes)	0		0		0
Gross margin (excluding Canadian resource taxes)	(1,305.4)		(125.5)		(82.3)
Restructuring and related cost, incurred costs	0				931.6
Operating (loss) earnings	1,179.8		(147.1)		(1,131.1)
Capital expenditures	649.9		538.1		545.2
Depreciation, depletion and amortization expense	428.7		443.4		430.1
Equity in net earnings (loss) of nonconsolidated companies	5.4		(94.1)		(60.1)
Assets	8,776.4	[1]	7,022.1	[1]	7,183.5
Goodwill, Impairment Loss					588.6
Potash Segment
Segment Reporting Information [Line Items]
Net sales	2,587.9		1,988.6		2,081.7
Intersegment Sales	38.9		30.7		32.1
Revenues	2,626.8		2,019.3		2,113.8
Gross margin	1,057.5		468.3		616.8
Canadian resource taxes)	259.5		146.1		174.6
Gross margin (excluding Canadian resource taxes)	(1,317)		(614.4)		(791.4)
Restructuring and related cost, incurred costs	158.1				530.5
Operating (loss) earnings	836.6		401.5		45.8
Capital expenditures	410.1		478.2		540.1
Depreciation, depletion and amortization expense	267.8		282.4		296.3
Equity in net earnings (loss) of nonconsolidated companies	0		0		0
Assets	8,312.8		7,614.8	[1]	7,219.2
Mosaic Fertilizantes
Segment Reporting Information [Line Items]
Net sales	5,088.5		3,481.6		3,782.8
Intersegment Sales	0		0		0
Revenues	5,088.5		3,481.6		3,782.8
Gross margin	842.7		419.6		290.1
Canadian resource taxes)	0		0		0
Gross margin (excluding Canadian resource taxes)	(842.7)		(419.6)		(290.1)
Restructuring and related cost, incurred costs	0				0
Operating (loss) earnings	745.9		346.5		132.5
Capital expenditures	216.1		144.9		182.3
Depreciation, depletion and amortization expense	101.2		105.7		135.8
Equity in net earnings (loss) of nonconsolidated companies	0		0		0
Assets	4,908.2		4,127.7	[1]	3,974.9
Corporate Eliminations And Other Segment
Segment Reporting Information [Line Items]
Net sales	791.3		668		625.2
Intersegment Sales	(1,072.1)		(603.6)		(856.8)
Revenues	(280.8)		64.4		(231.6)
Gross margin	(5.3)		51.5		72.7
Canadian resource taxes)	0		0		0
Gross margin (excluding Canadian resource taxes)	5.3		(51.5)		(72.7)
Restructuring and related cost, incurred costs	0				0
Operating (loss) earnings	(293.8)		(188)		(142.1)
Capital expenditures	12.5		9.4		4.6
Depreciation, depletion and amortization expense	15.2		16.1		20.5
Equity in net earnings (loss) of nonconsolidated companies	2.4		0.3		0.7
Assets	39		1,025.2	[1]	920.9
Corporate Eliminations And Other Segment | China and India distribution operations
Segment Reporting Information [Line Items]
Net sales	730.1		639.4		575.6
Gross margin	$ 141.6		$ 58.7		$ 27.3
[1]	In 2019, we recorded an impairment of goodwill in Phosphates of $588.6 million, which reduced the total asset balance

Disaggregation of Revenue and L

Disaggregation of Revenue and Long Lived Assets (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets
Net sales		$ 12,357.4	$ 8,681.7	$ 8,906.3
Long-lived assets		14,541.8	13,916.2
Goodwill		1,172.2	1,173	1,156.9
Deferred Income Tax Assets, Net		997.1	1,179.4
Phosphate Crop Nutrients | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales		3,552.7	2,477	2,541.3
Potash Crop Nutrients | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales		3,367.9	2,566.7	2,716.8
Crop Nutrient Blends | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales		1,800	1,232.7	1,415.7
Specialty Products | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[1]	1,973.6	1,370.8	1,193.6
Phosphate Rock | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales		75.5	42	53.6
Other Product Types | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[2]	$ 1,587.7	992.5	985.3
Brazil
Revenues from External Customers and Long-Lived Assets
Canpotex sales volumes by geography, percentage		30.00%
Long-lived assets		$ 2,011	1,904.1
Brazil | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	5,002.2	3,377.1	3,675.1
Canpotex
Revenues from External Customers and Long-Lived Assets
Net sales		1,100	795.2	952.5
Canpotex | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	1,089.6	795.2	952.5
Canada
Revenues from External Customers and Long-Lived Assets
Long-lived assets		5,012.2	4,998.5
Canada | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	$ 794.9	547.5	602
India
Revenues from External Customers and Long-Lived Assets
Canpotex sales volumes by geography, percentage		6.00%
India | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	$ 340.3	318.4	347.1
China
Revenues from External Customers and Long-Lived Assets
Canpotex sales volumes by geography, percentage		11.00%
China | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	$ 396	334.2	225.3
Australia | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	64.8	85.1	91.3
Mexico | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	93.6	77.1	117.8
Colombia | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	135.1	93.4	82.8
Paraguay | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	113.8	94.3	102.9
Japan | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	112.4	58.8	33
Peru | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	40	62	89.3
Argentina | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	101.3	121	116.3
Honduras | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	22.3	31	11.7
Thailand | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	18.1	21.2	24.8
Other Foreign
Revenues from External Customers and Long-Lived Assets
Long-lived assets		1,285	1,324.8
Other Foreign | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	73.9	75	84.3
Total Foreign
Revenues from External Customers and Long-Lived Assets
Long-lived assets		8,308.2	8,227.4
Total Foreign | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales		8,428.1	6,108.4	6,573.5
United States
Revenues from External Customers and Long-Lived Assets
Long-lived assets		6,233.6	5,688.8
United States | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales	[3]	$ 3,929.3	2,573.3	2,332.8
Indonesia
Revenues from External Customers and Long-Lived Assets
Canpotex sales volumes by geography, percentage		14.00%
Other Countries
Revenues from External Customers and Long-Lived Assets
Canpotex sales volumes by geography, percentage		39.00%
Total Geography
Revenues from External Customers and Long-Lived Assets
Net sales		$ 12,357.4	8,681.7	8,906.3
DOMINICAN REPUBLIC | Transferred at Point in Time
Revenues from External Customers and Long-Lived Assets
Net sales		$ 29.8	$ 17.1	$ 17.3
[1]	Includes sales of MicroEssentials ® , K-Mag ® , Aspire ® and Sus-Terra™
[2]	Includes sales of industrial potash
[3]	Revenues are attributed to countries based on location of customer.

Plant City and Colonsay Closu_2

Plant City and Colonsay Closure Costs (Details) t in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)t	Dec. 31, 2019USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred costs	$ 158.1	$ 0	$ 1,462.1
Plant City
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred costs			341.3
Colonsay
Restructuring Cost and Reserve [Line Items]
Production Capacity | t		1.5
2013 Expansion Project Written Off | t		2.1
Restructuring and related cost, incurred costs		$ 529.7
Colonsay | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		27
Asset Retirement Obligation Costs | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	37.1
Asset Retirement Obligation Costs | Plant City
Restructuring Cost and Reserve [Line Items]
Restructuring Costs			110
Other Current Assets | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	11.1
Other Current Assets | Plant City
Restructuring Cost and Reserve [Line Items]
Restructuring Costs			21
Other Current Assets | Colonsay
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		10
Property, Plant and Equipment | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 109.9
Property, Plant and Equipment | Plant City
Restructuring Cost and Reserve [Line Items]
Restructuring Costs			$ 210
Property, Plant and Equipment | Colonsay
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		$ 493

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Feb. 21, 2022
Subsequent Events [Abstract]
Stock Repurchase Program, Authorized Amount			$ 1,000
Common Stock, Dividends, Per Share, Declared			$ 0.45
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount			$ 1,000
Common Stock, Dividends, Per Share, Declared			$ 0.45
Subsequent Event
Subsequent Events [Abstract]
Stock Repurchase Program, Authorized Amount				$ 1,000
Accelerated Share Repurchases, Cash or Stock Settlement		400 million
Common Stock, Dividends, Per Share, Declared	$ 0.60
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount				$ 1,000
Common Stock, Dividends, Per Share, Declared	$ 0.60
Accelerated Share Repurchases, Cash or Stock Settlement		400 million