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Basis of Presentation and Recently Issued Accounting Standards (Details) $ in Millions			3 Months Ended
	Mar. 20, 2026 USD ($)	Jul. 31, 2025 USD ($) gal facility	Jun. 30, 2026 USD ($)	Jun. 29, 2026 USD ($)	Mar. 19, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jul. 30, 2025	Jun. 30, 2025 USD ($)
Business Combination, Separately Recognized Transaction [Line Items]
Readily marketable inventory			$ 646.1			$ 1,001.3		$ 496.6
Asset impairment			$ 10.6
Line of credit \| Revolving Facility
Business Combination, Separately Recognized Transaction [Line Items]
Credit facility, maximum borrowing capacity	$ 1,300.0				$ 1,550.0
Secured Debt \| Term Loan Maturing 2031
Business Combination, Separately Recognized Transaction [Line Items]
Debt repayment	86.3
Secured Debt \| Term Loan Maturing 2034
Business Combination, Separately Recognized Transaction [Line Items]
Credit facility, maximum borrowing capacity	$ 170.1
The Andersons Marathon Holdings LLC
Business Combination, Separately Recognized Transaction [Line Items]
Ownership percentage by noncontrolling owners			100.00%				50.10%
Skyland Grain LLC \| Line of credit
Business Combination, Separately Recognized Transaction [Line Items]
Ownership percentage				65.00%
The Andersons Marathon Holdings LLC
Business Combination, Separately Recognized Transaction [Line Items]
Number of ethanol production facilities \| facility		4
Annual production capacity of ethanol facilities \| gal		500,000,000
Skyland Grain LLC \| Line of credit
Business Combination, Separately Recognized Transaction [Line Items]
Additional term loan capacity				$ 10.0
The Andersons Marathon Holdings LLC
Business Combination, Separately Recognized Transaction [Line Items]
Percentage acquired		49.90%
Consideration for acquisition		$ 425.0