INTANGIBLE ASSETS - Summary of changes in carrying value of Goodwill (Details) $ in Millions	3 Months Ended
	Dec. 28, 2019 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 7,820
Purchase price allocation adjustments	(3)
Currency translation adjustment	29
Balance at end of period	7,846
Power & Control
Goodwill [Roll Forward]
Balance at beginning of period	4,121
Purchase price allocation adjustments	(106)
Currency translation adjustment	12
Balance at end of period	4,027
Airframe
Goodwill [Roll Forward]
Balance at beginning of period	3,598
Purchase price allocation adjustments	106
Currency translation adjustment	16
Balance at end of period	3,720
Non- aviation
Goodwill [Roll Forward]
Balance at beginning of period	101
Purchase price allocation adjustments	(3)
Currency translation adjustment	1
Balance at end of period	$ 99