The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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The cash inflow for a financial contract that meets the hedge criteria as either a cash flow hedge, fair value hedge, or hedge of a net investment in a foreign operation.

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Goodwill and Other Intangible Assets (Details 2) - USD ($) $ in Millions			3 Months Ended				12 Months Ended
	Dec. 01, 2023	Jan. 01, 2023	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Identifiable intangibles
Gross Carrying Amount							$ 578	$ 50
Accumulated Amortization							(40)	(35)
Net							538	15
U.K. long-lived and intangible asset impairment			$ 87			$ 236	0	239	$ 236
Proceeds from sale of energy credits									46
Realized net (loss) gains							39	6	29
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)			15
U.K. goodwill impairment					$ 26	$ 259	0	0	285
Ammonia
Identifiable intangibles
U.K. goodwill impairment									9
AN
Identifiable intangibles
U.K. goodwill impairment									241
Other Products [Member]
Identifiable intangibles
U.K. goodwill impairment									35
Waggaman Ammonia Production Facility
Identifiable intangibles
Intangible assets acquired	$ 526
Personal property tax agreement
Identifiable intangibles
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)			9	$ 8
United Kingdom \| Natural gas derivatives
Identifiable intangibles
Realized net (loss) gains									27
Customer relationships
Identifiable intangibles
Gross Carrying Amount							505	50
Accumulated Amortization							(40)	(35)
Net							$ 465	15
Finite-lived intangible asset, useful life							20 years
Amortization expense							$ 5	3	8
U.K. long-lived and intangible asset impairment			$ 6						$ 50
Customer relationships \| Waggaman Ammonia Production Facility
Identifiable intangibles
Intangible assets acquired		$ 455
Personal property tax agreement
Identifiable intangibles
Gross Carrying Amount							71	0
Accumulated Amortization							0	0
Net							71	0
Carbon Credit
Identifiable intangibles
Gross Carrying Amount							2	0
Accumulated Amortization							0	0
Net							$ 2	$ 0
Property Tax Agreement
Identifiable intangibles
Finite-lived intangible asset, useful life							12 years
Property Tax Agreement \| Waggaman Ammonia Production Facility
Identifiable intangibles
Intangible assets acquired		$ 71