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INTANGIBLE ASSETS - Summary of Changes in Carrying Value of Goodwill (by Segment) (Details) $ in Millions	6 Months Ended
	Mar. 29, 2025 USD ($)
Goodwill [Roll Forward]
Balance at September 30, 2024	$ 10,419
Goodwill acquired during the period	60
Purchase price allocation adjustments	(55)	[1]
Currency translation adjustments and other	(69)
Balance at March 29, 2025	10,355
Power & Control
Goodwill [Roll Forward]
Balance at September 30, 2024	5,020
Goodwill acquired during the period	60
Purchase price allocation adjustments	6	[1]
Currency translation adjustments and other	(21)
Balance at March 29, 2025	5,065
Airframe
Goodwill [Roll Forward]
Balance at September 30, 2024	5,306
Goodwill acquired during the period	0
Purchase price allocation adjustments	(61)	[1]
Currency translation adjustments and other	(39)
Balance at March 29, 2025	5,206
Non-aviation
Goodwill [Roll Forward]
Balance at September 30, 2024	93
Goodwill acquired during the period	0
Purchase price allocation adjustments	0	[1]
Currency translation adjustments and other	(9)
Balance at March 29, 2025	$ 84
[1] Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year). Refer to Note 2, “Acquisitions,” for further information.

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