Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

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Gross amount of debt extinguished.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Fair value of the amount outstanding under the credit facility.

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Amount of increase (decrease) of the credit facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Financing Agreements - Narrative (Details) - USD ($)			3 Months Ended			9 Months Ended
Financing Agreements - Narrative (Details) - USD ($)	Sep. 10, 2021	Mar. 20, 2021	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 05, 2019	Jul. 29, 2016
Financing agreements
Loss on debt extinguishment			$ 0	$ 13,000,000	$ 6,000,000	$ 8,000,000	$ 19,000,000
Principal			3,000,000,000			3,000,000,000		$ 3,500,000,000
Letter of Credit \| Letter of Credit
Financing agreements
Maximum borrowing capacity			350,000,000			350,000,000
Line of Credit Facility, Fair Value of Amount Outstanding			197,000,000			197,000,000
Line of Credit Facility, Increase (Decrease), Net						100,000,000
CF Industries \| Credit Agreement
Financing agreements
Available credit			750,000,000			750,000,000
Outstanding letters of credit			0			0
Long-term Line of Credit			$ 0			$ 0		$ 0
CF Industries \| Amendment No. 4 to the Third Amended and Restated Revolving Credit Agreement \| Letter of Credit \| Revolving Credit Facility
Financing agreements
Maximum borrowing capacity									$ 750,000,000
CF Industries \| July 2016 Credit Agreement Amendment \| Letter of Credit \| Letter of Credit
Financing agreements
Maximum borrowing capacity										$ 125,000,000
CF Industries \| Senior notes 3.450% due 2023 \| Senior Notes
Financing agreements
Interest rate (as a percent)			3.45%			3.45%		3.45%
Loss on debt extinguishment			$ (8,000,000)
Early Repayment of Senior Debt	$ 250,000,000
Extinguishment of Debt, Amount	265,000,000		513,000,000
Principal	$ 750,000,000		$ 0			$ 0		$ 500,000,000
CF Industries \| Senior Notes 3.400% Due 2021 \| Senior Notes
Financing agreements
Interest rate (as a percent)								3.40%
Early Repayment of Senior Debt		$ 250,000,000
Extinguishment of Debt, Amount		$ 258,000,000