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Financing Agreements (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Debt Instruments    
Principal $ 3,000.0 $ 3,000.0
Carrying amount 2,967.0 2,965.0
Long-term debt 2,967.0 2,965.0
CF Industries    
Debt Instruments    
Unamortized debt discount 7.0 7.0
Total deferred debt issuance costs $ 26.0 $ 28.0
CF Industries | Senior Notes | Senior notes 5.150% due 2034    
Financing agreements    
Interest rate (as a percent) 5.15% 5.15%
Debt Instruments    
Effective Interest Rate (percent) 5.293% 5.293%
Principal $ 750.0 $ 750.0
Carrying amount $ 741.0 $ 741.0
CF Industries | Senior Notes | Senior notes 4.950% due 2043    
Financing agreements    
Interest rate (as a percent) 4.95% 4.95%
Debt Instruments    
Effective Interest Rate (percent) 5.04% 5.04%
Principal $ 750.0 $ 750.0
Carrying amount $ 742.0 $ 742.0
CF Industries | Senior Notes | Senior notes 5.375% due 2044    
Financing agreements    
Interest rate (as a percent) 5.375% 5.375%
Debt Instruments    
Effective Interest Rate (percent) 5.478% 5.478%
Principal $ 750.0 $ 750.0
Carrying amount $ 741.0 $ 740.0
CF Industries | Senior Notes | Senior Notes 4.500% Due 2026    
Financing agreements    
Interest rate (as a percent) 4.50% 4.50%
Debt Instruments    
Effective Interest Rate (percent) 4.783% 4.783%
Principal $ 750.0 $ 750.0
Carrying amount $ 743.0 $ 742.0