Goodwill and Intangible Assets - Goodwill (Details) - Manufacturing group - USD ($) $ in Millions	12 Months Ended
Jan. 03, 2026	Dec. 28, 2024
Changes in the carrying amount of goodwill
Beginning Balance	$ 2,288	$ 2,295
Acquisitions		10
Foreign currency translation	33	(17)
Ending Balance	2,321	2,288
Textron Aviation
Changes in the carrying amount of goodwill
Beginning Balance	632	633
Acquisitions		0
Foreign currency translation	1	(1)
Ending Balance	633	632
Bell
Changes in the carrying amount of goodwill
Beginning Balance	37	37
Acquisitions		0
Foreign currency translation	0	0
Ending Balance	37	37
Textron Systems
Changes in the carrying amount of goodwill
Beginning Balance	1,010	1,010
Acquisitions		0
Foreign currency translation	0	0
Ending Balance	1,010	1,010
Industrial
Changes in the carrying amount of goodwill
Beginning Balance	463	470
Acquisitions		0
Foreign currency translation	13	(7)
Ending Balance	476	463
Textron eAviation
Changes in the carrying amount of goodwill
Beginning Balance	146	145
Acquisitions		10
Foreign currency translation	19	(9)
Ending Balance	$ 165	$ 146

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