Income tax reconciliation tax expense and benefit.

No definition available.

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- Definition

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

+ References

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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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

No definition available.

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- Definition

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible impairment loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Minimum [Member]
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits is reasonably possible	$ 0		$ 0
Maximum [Member]
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits is reasonably possible	$ 1		$ 1
Current Fiscal Year [Member]
Income Tax Contingency [Line Items]
Effective tax rate (in hundredths)	27.00%		30.00%
Tax (benefit) and expense	$ (3)		$ (4)
Prior Fiscal Year [Member]
Income Tax Contingency [Line Items]
Effective tax rate (in hundredths)		(2.00%)		(2.00%)
Tax (benefit) and expense		$ (16)		$ (23)
Income tax reconciliation, nondeductible goodwill impairment		$ 706		$ 706