v3.25.2

Financial Instruments and Fair Value Measurements (Details) € in Millions, $ in Millions	9 Months Ended		12 Months Ended
	Jun. 28, 2025 USD ($)	Jun. 29, 2024 USD ($)	Sep. 28, 2024 USD ($)	Jun. 28, 2025 EUR (€)
Financial Instruments and Fair Value Measurements [Abstract]
Settlement of net investment hedges	$ 22	$ 0
Impairment charge			$ 172
Fair value of long-term indebtedness greater/(less) than book value	104
Cross-currency swaps [Member]
Financial Instruments and Fair Value Measurements [Abstract]
Settlement of net investment hedges	$ 22
Cross-Currency Swap Maturing November 2027 [Member]
Financial Instruments and Fair Value Measurements [Abstract]
Notional amount (in Euro) \| €				€ 250
Cross-Currency Swap Maturing November 2029 [Member]
Financial Instruments and Fair Value Measurements [Abstract]
Notional amount (in Euro) \| €				€ 425

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Nominal or face amount used to calculate payment on derivative.

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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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This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of long-term debt instruments that have contractual principal amounts and for which the fair value option has been elected.

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The cash inflow for a financial contract that meets the hedge criteria as either a cash flow hedge, fair value hedge, or hedge of a net investment in a foreign operation.

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Magnera Corp 10-Q