Effective Income Tax Rate Reconciliation, Tax Contingency, Interest Expense, Amount

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- Definition

Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount, before tax, of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a disposal group. Excludes discontinued operations.

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- Definition

Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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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

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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 increase (decrease) in the valuation allowance for deferred tax assets.

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- Definition

Amount of unrecognized tax benefits.

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Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Mar. 31, 2025
Income Tax Contingency [Line Items]
Discrete foreign tax benefit	$ 119
Discrete tax benefit, share-based compensation			$ 23
Discrete tax benefit recognized		$ 44
Canadian businesses held for sale			0	$ 638
Discrete tax benefits related to change the tax status of a foreign affiliate				58
Tax benefit, share-based compensation				38
Reduction in unrecognized tax benefits				47
Tax contingency, interest expense, amount				37
Unrecognized tax benefits	1,600		1,600
Unrecognized tax benefits that would impact effective tax rate	$ 1,400		$ 1,400
Disposed of by sale \| Canadian retail disposal group
Income Tax Contingency [Line Items]
Canadian businesses held for sale		$ 643		$ 643	$ 667