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Financing Agreements (Tables)
 3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Components of long-term debt
Long-term debt presented on our consolidated balance sheets as of March 31, 2024 and December 31, 2023 consisted of the following debt securities issued by CF Industries:
 Effective Interest RateMarch 31, 2024December 31, 2023
 Principal
Carrying Amount(1)
Principal
Carrying Amount(1)
(in millions)
Public Senior Notes:
5.150% due March 2034
5.293%750 742 750 741 
4.950% due June 2043
5.040%750 742 750 742 
5.375% due March 2044
5.478%750 741 750 741 
Senior Secured Notes:
4.500% due December 2026(2)
4.783%750 744 750 744 
Total long-term debt$3,000 $2,969 $3,000 $2,968 
_______________________________________________________________________________
(1)Carrying amount is net of unamortized debt discount and deferred debt issuance costs. Total unamortized debt discount was $6 million and $7 million as of March 31, 2024 and December 31, 2023, respectively, and total deferred debt issuance costs were $25 million as of both March 31, 2024 and December 31, 2023. 
(2)Effective August 23, 2021, these notes are no longer secured, in accordance with the terms of the applicable indenture.