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Financing Agreements (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Sep. 04, 2025 | Oct. 26, 2023 | Jul. 29, 2016
Financing agreements |  |  |  |  |  |
Long-term Debt, Gross | $ 3,250,000,000 | $ 3,000,000,000 |  |  |  |
Unsecured Debt [Abstract] |  |  |  |  |  |
Long-term debt | 3,215,000,000 | 2,971,000,000 |  |  |  |
Long-term debt | 3,215,000,000 | 2,971,000,000 |  |  |  |
Loss on debt extinguishment | 6,000,000 | 0 | $ 0 |  |  |
CF Industries |  |  |  |  |  |
Unsecured Debt [Abstract] |  |  |  |  |  |
Debt Instrument, Unamortized Discount | 5,000,000 | 6,000,000 |  |  |  |
Unamortized Debt Issuance Expense | 30,000,000 | $ 23,000,000 |  |  |  |
CF Industries | Senior Credit Agreement |  |  |  |  |  |
Debt Instruments |  |  |  |  |  |
Available credit | 750,000,000 |  |  |  |  |
Line of credit facility, amount outstanding | 0 |  |  |  |  |
Letters of credit outstanding, amount | $ 0 |  |  |  |  |
Senior Notes | CF Industries | 5.150% due 2034 |  |  |  |  |  |
Financing agreements |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 5.15% | 5.15% |  |  |  |
Long-term Debt, Gross | $ 750,000,000 | $ 750,000,000 |  |  |  |
Unsecured Debt [Abstract] |  |  |  |  |  |
Long-term debt | $ 743,000,000 | $ 742,000,000 |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 5.293% | 5.293% |  |  |  |
Senior Notes | CF Industries | 4.950% due 2043 |  |  |  |  |  |
Financing agreements |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 4.95% | 4.95% |  |  |  |
Long-term Debt, Gross | $ 750,000,000 | $ 750,000,000 |  |  |  |
Unsecured Debt [Abstract] |  |  |  |  |  |
Long-term debt | $ 742,000,000 | $ 742,000,000 |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 5.04% | 5.04% |  |  |  |
Senior Notes | CF Industries | 5.375% due 2044 |  |  |  |  |  |
Financing agreements |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 5.375% | 5.375% |  |  |  |
Long-term Debt, Gross | $ 750,000,000 | $ 750,000,000 |  |  |  |
Unsecured Debt [Abstract] |  |  |  |  |  |
Long-term debt | $ 741,000,000 | $ 741,000,000 |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 5.478% | 5.478% |  |  |  |
Senior Notes | CF Industries | 4.500% due December 2026(2) |  |  |  |  |  |
Financing agreements |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 4.50% | 4.50% |  |  |  |
Long-term Debt, Gross | $ 0 | $ 750,000,000 |  |  |  |
Unsecured Debt [Abstract] |  |  |  |  |  |
Long-term debt | 0 | $ 746,000,000 |  |  |  |
Loss on debt extinguishment | $ (6,000,000) |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 4.783% | 4.783% |  |  |  |
Extinguishment of Debt, Amount | $ 756,000,000 |  |  |  |  |
Interest Payable | 2,000,000 |  |  |  |  |
Payment for Debt Extinguishment or Debt Prepayment Cost | $ 4,000,000 |  |  |  |  |
Senior Notes | CF Industries | Senior Notes 5.300 Percent Due 2035 |  |  |  |  |  |
Financing agreements |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 5.30% | 5.30% |  |  |  |
Long-term Debt, Gross | $ 1,000,000,000 | $ 0 |  |  |  |
Unsecured Debt [Abstract] |  |  |  |  |  |
Long-term debt | $ 989,000,000 | $ 0 |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 5.444% | 5.444% |  |  |  |
Revolving Credit Facility | Line of Credit | CF Industries | Amendment No. 4 to the Third Amended and Restated Revolving Credit Agreement |  |  |  |  |  |
Debt Instruments |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | $ 750,000,000 |
Letter of Credit | Line of Credit |  |  |  |  |  |
Debt Instruments |  |  |  |  |  |
Maximum borrowing capacity | $ 425,000,000 |  |  |  |  |
Unsecured Debt [Abstract] |  |  |  |  |  |
Line of Credit Facility, Fair Value of Amount Outstanding | $ 339,000,000 |  |  |  |  |
Letter of Credit | Line of Credit | CF Industries | July 2016 Credit Agreement Amendment |  |  |  |  |  |
Debt Instruments |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 125,000,000
Swingline loan | Line of Credit | CF Industries |  |  |  |  |  |
Debt Instruments |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 75,000,000 |  |

X
- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-4 + Details
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- Definition Line items represent financial concepts included in a table. 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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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