Segment and Geographic Data - Operating Income by Segment (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 27, 2020	Mar. 29, 2019	Mar. 27, 2020	Mar. 29, 2019
Segment and Geographic Data
Operating income	$ (415)	$ 530	$ 56	$ 1,014
Goodwill impairment	900		900
Transportation Solutions
Segment and Geographic Data
Operating income	(606)	316	(290)	648
Goodwill impairment			900
Industrial Solutions
Segment and Geographic Data
Operating income	142	137	257	237
Communications Solutions
Segment and Geographic Data
Operating income	$ 49	$ 77	$ 89	$ 129

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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