TRADE ACCOUNTS RECEIVABLE - Content Trade Accounts Receivable (Detail) - USD ($) $ in Millions	Sep. 30, 2026	Sep. 30, 2025
Receivables [Abstract]
Trade accounts receivable—gross	$ 2,086	$ 1,642
Allowance for uncollectible accounts	(32)	(25)
Trade accounts receivable—Net	$ 2,054	$ 1,617

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482736/825-10-45-1A

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-URI https://asc.fasb.org/1943274/2147481990/310-10-45-13

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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Balance Type:	debit
Period Type:	instant