Derivative Financial Instruments (Details) - MMBTU MMBTU in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Open derivative contracts for natural gas (in MMBtus)	13.5	16.0
Percentage of natural gas consumption covered by derivatives	2.00%

Aggregate notional amount of price risk derivatives not designated as a hedging instrument with notional amounts expressed in nonmonetary units.

No definition available.

Name:	cf_NotionalNonmonetaryAmountofPriceRiskDerivativeInstrumentsNotDesignatedasHedgingInstruments
Namespace Prefix:	cf_
Data Type:	dtr-types:energyItemType
Balance Type:	na
Period Type:	instant