Financing Agreements (Details) - USD ($)			12 Months Ended
	Sep. 10, 2021	Mar. 20, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Apr. 21, 2022	Dec. 05, 2019	Jul. 29, 2016
Financing agreements
Long-term Debt, Gross			$ 3,000,000,000	$ 3,500,000,000
Unsecured Debt [Abstract]
Long-term debt			2,965,000,000	3,465,000,000
Long-term debt			2,965,000,000	3,465,000,000
Loss on debt extinguishment			8,000,000	19,000,000	$ 0
Line of Credit Facility, Maximum Amount Outstanding During Period					$ 500,000,000
Line of Credit Facility, Interest Rate During Period					2.05%
CF Industries
Unsecured Debt [Abstract]
Debt Instrument, Unamortized Discount			7,000,000	8,000,000
Unamortized Debt Issuance Expense			28,000,000	$ 27,000,000
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 | 3.450% due 2023
Financing agreements
Debt Instrument, Interest Rate, Effective Percentage			3.45%	3.45%
Long-term Debt, Gross			$ 0			$ 500,000,000
Unsecured Debt [Abstract]
Long-term debt			0	$ 499,000,000
Loss on debt extinguishment	$ (13,000,000)		$ (8,000,000)
Debt Instrument, Interest Rate, Effective Percentage			3.665%	3.665%
Early Repayment of Senior Debt	250,000,000
Debt Instrument, Face Amount	750,000,000
Extinguishment of Debt, Amount	$ 265,000,000		$ 513,000,000
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			$ 741,000,000	$ 741,000,000
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			$ 740,000,000	$ 741,000,000
Debt Instrument, Interest Rate, Effective Percentage			5.478%	5.478%
Senior Notes | CF Industries | 3.400% due December 2021
Financing agreements
Debt Instrument, Interest Rate, Effective Percentage			3.40%	3.40%
Unsecured Debt [Abstract]
Loss on debt extinguishment		$ (6,000,000)
Early Repayment of Senior Debt		250,000,000
Extinguishment of Debt, Amount		$ 258,000,000
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			$ 750,000,000	$ 750,000,000
Unsecured Debt [Abstract]
Long-term debt			$ 742,000,000	$ 742,000,000
Debt Instrument, Interest Rate, Effective Percentage			4.783%	4.783%
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			$ 350,000,000
Unsecured Debt [Abstract]
Line of Credit Facility, Fair Value of Amount Outstanding			201,000,000
Line of Credit Facility, Increase (Decrease), Net			$ 100,000,000
Letter of Credit | Line of Credit | CF Industries | July 2016 Credit Agreement Amendment
Debt Instruments
Maximum borrowing capacity								$ 125,000,000