Business Segment Information - Components of Identifiable Assets, Depreciation and Amortization, and Capital Expenditures for Property (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting [Line Items]
Depreciation and amortization	$ 314	$ 325	$ 317
Amortization of acquisition-related intangible assets	120	141	144
Operating Segments
Segment Reporting [Line Items]
Depreciation and amortization	194	184	173
Corporate
Segment Reporting [Line Items]
Depreciation and amortization	5	5	4
Intelligent Devices \| Operating Segments
Segment Reporting [Line Items]
Depreciation and amortization	83	62	58
Software & Control \| Operating Segments
Segment Reporting [Line Items]
Depreciation and amortization	75	74	68
Lifecycle Services \| Operating Segments
Segment Reporting [Line Items]
Depreciation and amortization	$ 31	$ 43	$ 43

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details