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SEGMENTS (Tables)

12 Months Ended

Sep. 30, 2025

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following table sets forth, for the periods indicated, certain financial information by reportable segment, which includes a reconciliation of EBITDA As Defined to consolidated income from continuing operations before income taxes (in millions):

						Fiscal Year Ended September 30, 2025
						Power & Control						Airframe						Non-aviation						Total
Net sales to external customers
Commercial and non-aerospace OEM						$	926					$	1,180											$	2,106
Commercial and non-aerospace aftermarket						1,360						1,444												2,804
Defense						2,273						1,488												3,761
Non-aviation						—						—						160						160
Net Sales						4,559						4,112						160						8,831
Less:
Other segment expenses (1)						1,964						1,902						93
Total segment EBITDA As Defined						2,595						2,210						67						4,872
Less: Unallocated corporate EBITDA As Defined																								112
Depreciation and amortization expense																								367
Interest expense-net																								1,572
Acquisition transaction and integration-related expenses																								42
Non-cash stock and deferred compensation expense																								157
Refinancing costs																								11
Other, net																								(18)
Income from continuing operations before income taxes																								$	2,629

(1)Primarily represents cost of sales, selling expenses, general and administrative expenses, research and development, and miscellaneous income or expense. Excludes depreciation and amortization; non-cash stock and deferred compensation expense; foreign currency transaction losses; acquisition transaction and integration-related expenses and payroll withholding taxes related to dividend equivalent payments.

						Fiscal Year Ended September 30, 2024
						Power & Control						Airframe						Non-aviation						Total
Net sales to external customers
Commercial and non-aerospace OEM						$	841					$	1,280											$	2,121
Commercial and non-aerospace aftermarket						1,218						1,290												2,508
Defense						1,907						1,239												3,146
Non-aviation						—						—						165						165
Net Sales						3,966						3,809						165						$	7,940
Less:
Other segment expenses (1)						1,715						1,847						99
Total segment EBITDA As Defined						2,251						1,962						66						4,279
Less: Unallocated corporate EBITDA As Defined																								106
Depreciation and amortization expense																								312
Interest expense-net																								1,286
Acquisition transaction and integration-related expenses																								70
Non-cash stock and deferred compensation expense																								217
Refinancing costs																								58
Other, net																								15
Income from continuing operations before income taxes																								$	2,215

(1)Primarily represents cost of sales, selling expenses, general and administrative expenses, research and development, and miscellaneous income or expense. Excludes depreciation and amortization; non-cash stock and deferred compensation expense; foreign currency transaction losses; acquisition transaction and integration-related expenses and payroll withholding taxes related to dividend equivalent payments.

						Fiscal Year Ended September 30, 2023
						Power & Control						Airframe						Non-aviation						Total
Net sales to external customers
Commercial and non-aerospace OEM						$	696					$	989											$	1,685
Commercial and non-aerospace aftermarket						1,074						1,112												2,186
Defense						1,569						993												2,562
Non-aviation						—						—						152						152
Net Sales						3,339						3,094						152						$	6,585
Less:
Other segment expenses (1)						1,459						1,547						95
Total segment EBITDA As Defined						1,880						1,547						57						3,484
Less: Unallocated corporate EBITDA As Defined																								89
Depreciation and amortization expense																								268
Interest expense-net																								1,164
Acquisition transaction and integration-related expenses																								18
Non-cash stock and deferred compensation expense																								157
Refinancing costs																								56
Other, net																								16
Income from continuing operations before income taxes																								$	1,716

(1)Primarily represents cost of sales, selling expenses, general and administrative expenses, research and development, and miscellaneous income or expense. Excludes depreciation and amortization; non-cash stock and deferred compensation expense; foreign currency transaction losses; acquisition transaction and integration-related expenses and payroll withholding taxes related to dividend equivalent payments.

Assets, Capital Expenditures and Depreciation and Amortization by Segment

						September 30, 2025
						Power & Control						Airframe						Non-aviation						Corporate (1)						Total
Total assets						9,859						10,267						202						2,581						22,909
Capital expenditures						108						103						9						2						222
Depreciation and amortization						180						181						6						—						367

(1)Corporate consists of our corporate offices and does not constitute an operating segment. These amounts are included to reconcile to total consolidated assets, capital expenditures and depreciation and amortization, respectively.

						September 30, 2024
						Power & Control						Airframe						Non-aviation						Corporate (1)						Total
Total assets						9,180						10,045						193						6,168						25,586
Capital expenditures						90						73						2						—						165
Depreciation and amortization						133						172						6						1						312

(1)Corporate consists of our corporate offices and does not constitute an operating segment. These amounts are included to reconcile to total consolidated assets, capital expenditures and depreciation and amortization, respectively.

						September 30, 2023
						Power & Control						Airframe						Non-aviation						Corporate (1)						Total
Total assets						7,356						8,972						193						3,449						19,970
Capital expenditures						67						65						6						1						139
Depreciation and amortization						110						152						5						1						268

(1)Corporate consists of our corporate offices and does not constitute an operating segment. These amounts are included to reconcile to total consolidated assets, capital expenditures and depreciation and amortization, respectively.

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

Geographic Area Information

Net sales are measured based on the geographic destination of sales. Long-lived assets consist of property, plant and equipment-net and operating lease right-of-use assets. Net sales and long-lived assets of individual countries outside of the United States are not material.

The following table presents net sales by geographic area (in millions):

			Fiscal Years Ended September 30,
			2025						2024						2023
Net sales
United States			$	5,535					$	5,032					$	4,265
Foreign Countries			3,296						2,908						2,320
			$	8,831					$	7,940					$	6,585

The following table presents long-lived assets by geographic area (in millions):

			September 30, 2025						September 30, 2024						September 30, 2023
Long-lived assets
United States			$	1,339					$	1,273					$	1,063
Foreign Countries			305						276						256
			$	1,644					$	1,549					$	1,319

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+ References

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-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
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Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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