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Summary of Significant Accounting Policies (Details 2)
Dec. 31, 2014
Operating equity method investments | Point Lisas Nitrogen Limited (PLNL)  
Investments in and Advances to Unconsolidated Affiliates  
Ownership interest (as a percent) 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_InvestmentTypeAxis
= cf_OperatingEquityMethodInvestmentMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cf_PointLisasNitrogenLimitedMember
Operating equity method investments | Ammonia storage joint venture  
Investments in and Advances to Unconsolidated Affiliates  
Ownership interest (as a percent) 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_InvestmentTypeAxis
= cf_OperatingEquityMethodInvestmentMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cf_AmmoniaStorageJointVentureMember
Non-operating equity method investments | KEYTRADE AG  
Investments in and Advances to Unconsolidated Affiliates  
Ownership interest (as a percent) 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_InvestmentTypeAxis
= cf_NonoperatingEquityMethodInvestmentMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cf_KeytradeAGMember
Non-operating equity method investments | GrowHow  
Investments in and Advances to Unconsolidated Affiliates  
Ownership interest (as a percent) 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_InvestmentTypeAxis
= cf_NonoperatingEquityMethodInvestmentMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cf_GrowHowMember