GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets Acquired (Detail) $ in Millions	12 Months Ended
Sep. 30, 2025 USD ($)
Intangible Asset, Acquired, Finite-Lived [Line Items]
Intangible assets subject to amortization	$ 125
intangible Assets, Acquired During the Period	136
Trademarks and trade names
Intangible Asset, Acquired, Finite-Lived [Line Items]
Intangible assets not subject to amortization	11
Technology
Intangible Asset, Acquired, Finite-Lived [Line Items]
Intangible assets subject to amortization	$ 71
Technology \| Minimum
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization Period (in years)	10 years
Technology \| Maximum
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization Period (in years)	20 years
Order backlog
Intangible Asset, Acquired, Finite-Lived [Line Items]
Intangible assets subject to amortization	$ 17
Amortization Period (in years)	1 year
Order backlog \| Minimum
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization Period (in years)	1 year
Order backlog \| Maximum
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization Period (in years)	3 years
Customer relationships
Intangible Asset, Acquired, Finite-Lived [Line Items]
Intangible assets subject to amortization	$ 37
Customer relationships \| Minimum
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization Period (in years)	10 years
Customer relationships \| Maximum
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization Period (in years)	20 years

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- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 805
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147478072/944-805-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
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-Publisher FASB
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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

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Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
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