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- Definition

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Disposal Group, Including Discontinued Operation, Divestiture-Related Cost, Expense

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of expense for acquisition-related cost incurred to effect business combination. Includes, but is not limited to, finder's fee; advisory, legal, accounting, valuation, and other professional and consulting fees; and general administrative cost, including cost of maintaining internal acquisition department.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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- Definition

Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount classified as goodwill attributable to disposal group held for sale or disposed of.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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- Definition

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-12

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ACQUISITIONS AND DIVESTITURES - Additional Information (Details) $ in Millions			3 Months Ended	11 Months Ended	12 Months Ended
	Aug. 31, 2025 USD ($)	Mar. 26, 2024 USD ($)	Jul. 31, 2024 USD ($)	Sep. 30, 2025 USD ($)	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Oct. 01, 2025 USD ($)	Aug. 05, 2025 derivative
Business Combination [Line Items]
Proceeds from divestiture of businesses				$ 1,780.4	$ 89.0	$ 105.3
Gain on disposal of business				1,094.9	46.0	64.0
Goodwill				1,696.5	1,655.5	$ 1,394.8
Ipackchem Acquisition
Business Combination [Line Items]
Purchase price		$ 582.1
Acquisition and integration related costs		8.9
Goodwill		$ 281.0
Ipackchem Acquisition \| Minimum \| Building and Building Improvements
Business Combination [Line Items]
Newly constructed road, depreciation period		1 year
Ipackchem Acquisition \| Minimum \| Equipment
Business Combination [Line Items]
Newly constructed road, depreciation period		1 year
Ipackchem Acquisition \| Maximum \| Building and Building Improvements
Business Combination [Line Items]
Newly constructed road, depreciation period		21 years
Ipackchem Acquisition \| Maximum \| Equipment
Business Combination [Line Items]
Newly constructed road, depreciation period		10 years
Intercompany Sales, Recycled Fiber \| Containerboard Business
Business Combination [Line Items]
Cost of products sold				23.3	34.6
Net sales				23.3	$ 34.6
Disposal Group, Held-for-Sale, Not Discontinued Operations \| Soterra LLC
Business Combination [Line Items]
Number of acres \| derivative								173,000
Aggregate carrying value				$ 231.4
Disposal Group, Held-for-Sale, Not Discontinued Operations \| Soterra LLC \| Subsequent Event
Business Combination [Line Items]
Cash consideration							$ 462.0
Discontinued Operations, Disposed of by Sale \| Greif Containerboard Solutions, LLC
Business Combination [Line Items]
Cash consideration	$ 1,804.7
Transaction costs	$ 23.4
Discontinued Operations, Disposed of by Sale \| Delta Petroleum Company, Inc.
Business Combination [Line Items]
Proceeds from divestiture of businesses			$ 91.2
Gain on disposal of business			46.1
Disposal group, including discontinued operation, goodwill			$ 26.1