Investments - Narrative (Details)		12 Months Ended
	Feb. 01, 2016	Aug. 31, 2025 USD ($) T	Aug. 31, 2024 USD ($)	Aug. 31, 2023 USD ($)	Feb. 01, 2096 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity income from investments, net of distributions received		$ (569,665,000)	$ (479,863,000)	$ (689,590,000)
Capital reserves		3,015,424,000	2,805,526,000
Retained Earnings, Undistributed Earnings from Equity Method Investees		$ 705,200,000
CF Industries Nitrogen
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		8.38%
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		$ 2,535,119,000	2,544,530,000
Cash Distribution from Equity Method		$ 304,400,000	308,400,000	$ 458,900,000
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		$ 527,227,000	511,231,000
Ardent Mills
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		12.00%
Equity method investments		$ 237,052,000	234,021,000
Producer Ag
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		57.00%
Equity method investments		$ 46,507,000	$ 15,274,000