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Investments - Narrative (Details) |  | 12 Months Ended |
--- | --- | --- | ---
Feb. 01, 2016 | Aug. 31, 2024 USD ($) T | Aug. 31, 2023 USD ($) | Aug. 31, 2022 USD ($) | Feb. 01, 2096 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income from investments, net of distributions received |  | $ (479,863,000) | $ (689,590,000) | $ (771,327,000) |
Capital reserves |  | 2,805,526,000 | 2,537,486,000 |  |
Retained Earnings, Undistributed Earnings from Equity Method Investees |  | 612,200,000 |  |  |
Nitrogen Production |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income from investments, net of distributions received |  | (275,531,000) | (394,678,000) | (593,182,000) |
Ag |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income from investments, net of distributions received |  | $ (65,190,000) | (48,725,000) | (82,357,000) |
CF Industries Nitrogen |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity method investment, ownership percentage |  | 8.40% |  |  |
Supply agreement, term | 80 years |  |  |  |
Maximum annual granular urea eligible for purchases | T |  | 1,100,000 |  |  |
Maximum annual UAN eligible for purchases | T |  | 580,000 |  |  |
Equity method investments |  | $ 2,544,530,000 | 2,577,391,000 |  |
Cash Distribution from Equity Method |  | $ 308,400,000 | 458,900,000 | $ 618,700,000 |
CF Industries Nitrogen | Forecast |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity method investments |  |  |  |  | $ 0
Ventura Foods |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity method investment, ownership percentage |  | 50.00% |  |  |
Equity method investments |  | $ 511,231,000 | 519,169,000 |  |
Ardent Mills |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity method investment, ownership percentage |  | 12.00% |  |  |
Equity method investments |  | $ 234,021,000 | $ 265,146,000 |  |
TEMCO |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity method investment, ownership percentage |  | 50.00% |  |  |

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