Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Dec. 31, 2025

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Changes in AOCI by Component

The changes in AOCI by component, net of tax, for the three-month periods ended December 31, 2025 and 2024 were as follows:

	Post-retirement benefit plans			Currency translation adjustment		Cash Flow Hedges			Total
Attributable to Matthews:
Balance, September 30, 2025	$	7,540		$	(84,997)	$	(553)		$	(78,010)
OCI before reclassification	(1,121)			10,620		(47)			9,452
Amounts reclassified from AOCI	(216)		(a)	18,719		(149)		(b)	18,354
Net current-period OCI	(1,337)			29,339		(196)			27,806
Balance, December 31, 2025	$	6,203		$	(55,658)	$	(749)		$	(50,204)

	Post-retirement benefit plans			Currency translation adjustment		Cash Flow Hedges			Total
Attributable to Matthews:
Balance, September 30, 2024	$	4,955		$	(174,623)	$	926		$	(168,742)
OCI before reclassification	(181)			(21,187)		2,565			(18,803)
Amounts reclassified from AOCI	(172)		(a)	6,576		(350)		(b)	6,054
Net current-period OCI	(353)			(14,611)		2,215			(12,749)
Balance, December 31, 2024	$	4,602		$	(189,234)	$	3,141		$	(181,491)
Attributable to noncontrolling interest:
Balance, September 30, 2024	$	—		$	289	$	—		$	289
OCI before reclassification	—			—		—			—
Net current-period OCI	—			—		—			—
Balance, December 31, 2024	$	—		$	289	$	—		$	289

(a) Amounts were included in net periodic benefit cost for pension and other postretirement benefit plans.

(b) Amounts were included in interest expense in the periods in which the hedged item affected earnings (see Note 9).

Schedule of Reclassifications out of AOCI

Reclassifications out of AOCI for the three-month periods ended December 31, 2025 and 2024 were as follows:

	Amount reclassified from AOCI
Details about AOCI Components	Three Months Ended December 31, 2025		Three Months Ended December 31, 2024		Affected line item in the Financial Statements
Postretirement benefit plans
Prior service credit (a)	$	57	$	91
Actuarial losses	232		139		Other income (deductions), net
	289		230		Income before income tax (b)
	(73)		(58)		Income taxes
	$	216	$	172	Net income
Derivatives
Cash flow hedges	$	200	$	468	Interest expense
Net investment hedges	122		354		Interest expense
	322		822		Income before income tax (b)
	(82)		(204)		Income taxes
	$	240	$	618	Net income
Other
Divestitures	$	(18,810)	$	—	Gain on divestitures, net
Divestitures	—		(6,844)		Other current liabilities (c)

(a) Prior service cost amounts are included in the computation of pension and other postretirement benefit expense, which is reported in cost of goods sold and selling and administrative expenses.

(b) For pre-tax items, positive amounts represent income and negative amounts represent expense.

(c) Reflects the release of a reserve that was established for currency translation amounts related to certain net assets classified as held-for-sale as of September 30, 2024. See Note 16, "Acquisitions and Divestitures".