Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 25, 2020	Sep. 25, 2020
Goodwill:
Goodwill, beginning balance	$ 5,224
Acquisitions	53
Purchase price adjustments	(2)
Currency translation	112
Goodwill, ending balance	5,387
Transportation Solutions
Goodwill:
Goodwill, beginning balance	1,527
Purchase price adjustments	(1)
Currency translation	33
Goodwill, ending balance	1,559
Accumulated impairment losses	3,091	$ 3,091
Industrial Solutions
Goodwill:
Goodwill, beginning balance	3,110
Acquisitions	53
Purchase price adjustments	(1)
Currency translation	66
Goodwill, ending balance	3,228
Accumulated impairment losses	669	669
Communications Solutions
Goodwill:
Goodwill, beginning balance	587
Currency translation	13
Goodwill, ending balance	600
Accumulated impairment losses	$ 489	$ 489

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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