Cumulative changes in the values of derivative positions that is recorded in unallocated derivative gains (losses).

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- Definition

Amount of gain or loss on cash flow hedging derivatives deferred in accumulated other comprehensive income or loss as of the balance sheet date.

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Derivative financial instruments.

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- Definition

Loss (Gain) on Reverse Tresaury Lock

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Amount, before tax, deferred in accumulated other comprehensive income (AOCI) for gain (loss) from discontinuance of cash flow hedge.

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No definition available.

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Other debt costs are made up of make-whole payments, write off of debt issuance costs, write off of fair value of interest rate swap, and financing fees.

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- Definition

Equity proceeds from the divestiture of businesses.

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- Definition

Settlement Of Interest Rate Contracts

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Tax impact related to deferred gains or losses on cash flow hedges included in accumulated other comprehensive loss.

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No definition available.

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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- Definition

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The net amount of nonoperating interest income (expense).

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The net amount paid (received) by the reporting entity through acquisition or sale and maturities of short-term investments with an original maturity that is three months or less which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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Derivative Financial Instruments (Details Textual) - USD ($) shares in Millions, $ in Millions			3 Months Ended				9 Months Ended
	Nov. 15, 2023	Apr. 28, 2023	Jan. 31, 2025	Jul. 31, 2024	Jan. 31, 2024	Jul. 31, 2020	Jan. 31, 2025	Jan. 31, 2024	Apr. 30, 2024
Derivative Financial Instruments (Textual) [Abstract]
Loss (Gain) on Reverse Tresaury Lock							$ 4.5
Collateral pledged			$ 8.5				8.5
Collateral received									$ 1.9
Cumulative net mark-to-market valuation of certain derivative positions recognized in unallocated derivative gains (losses)				$ 22.6			(64.3)
Settlement of interest rate contracts							0.0	$ 42.5
Interest expense – net			(95.4)		$ (99.8)		(294.5)	(167.0)
Other debt gains (charges) – net			$ 30.3		0.0		30.3	$ (19.5)
Post Holdings Inc. \| Pet Food Brands [Member]
Derivative Financial Instruments (Textual) [Abstract]
Proceeds from divestitures - equity		5.4
Proceeds from investment in equity securities	$ 466.3
Derivative, Gain (Loss) on Derivative, Net				$ 5.4	$ 28.2		$ 5.4
Commodity contracts
Derivative Financial Instruments (Textual) [Abstract]
Derivative instrument maturity			1 year				1 year
Foreign currency exchange contracts
Derivative Financial Instruments (Textual) [Abstract]
Derivative instrument maturity			1 year				1 year
Interest rate contracts
Derivative Financial Instruments (Textual) [Abstract]
Deferred pre-tax net gain (loss) included in accumulated other comprehensive loss						$ (239.8)
Deferred Gain (Loss) on Cash Flow Hedges Included in Accumulated Other Comprehensive Income or Loss			$ 120.4				$ 120.4		(187.1)
Tax impact related to deferred losses and gains on cash flow hedges included in accumulated other comprehensive loss			$ 28.3				28.3		$ 44.0
Effective portion of the hedge loss reclassified to interest expense over the next twelve months							$ (12.5)