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Equity Method Investment-Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 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% |  | 50.00% |
Equity Method Investment | $ 86 |  | $ 86 |
Carrying value of investments in excess of the entity's share of the affiliates' book value | 36 |  | 36 |
Purchases of ammonia from PLNL | $ 61 | $ 30 | $ 212 | $ 93

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