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Equity Method Investment-Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Equity method investments
Obligation to purchase ammonia (as a percent)	50.00%
Operating equity method investments | Maximum | Property, plant and equipment
Equity method investments
Number of years that the increased basis for property, plant and equipment and identifiable intangibles will be amortized	11 years
Point Lisas Nitrogen Limited (PLNL) | Operating equity method investments
Equity method investments
Ownership interest (as a percent)	50.00%
Equity Method Investment	$ 84
Carrying value of investments in excess of the entity's share of the affiliates' book value	38
Purchases of ammonia from PLNL	$ 74	$ 26

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The depreciation period of the increased basis (due to revaluation) over book value of finite-lived tangible and intangible assets.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract).

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