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Contributions To Equity Method Investee

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of income (expense) related to nonoperating activities, classified as other.

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The cash inflow associated with the amount received by a corporation from a shareholder during the period.

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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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Investment In and Advances to Non-Consolidated Affiliates and Related Party Transactions - Additional Information (Details) ₨ in Millions, $ in Millions		3 Months Ended		12 Months Ended
	Aug. 04, 2026 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2026 USD ($)	Aug. 04, 2026 INR (₨)
Schedule of Equity Method Investments [Line Items]
Net sales		$ 5,793	$ 4,717
Other income		$ (259)	1
Return of capital to our common shareholder			35
Proceeds from equity contribution				$ 950
Subsequent Event
Schedule of Equity Method Investments [Line Items]
Annual royalty payable as percent of consolidated net revenue	0.25%
Maximum \| Subsequent Event
Schedule of Equity Method Investments [Line Items]
Royalty payable	$ 24				₨ 2,250
Additional Paid-in Capital
Schedule of Equity Method Investments [Line Items]
Return of capital to our common shareholder			35
Aluminum Norf GmbH
Schedule of Equity Method Investments [Line Items]
Ownership percentage		50.00%
Ulsan Aluminum, Ltd.
Schedule of Equity Method Investments [Line Items]
Ownership percentage		50.00%
Additional contributions		$ 0	$ 6
AluInfra Services SA
Schedule of Equity Method Investments [Line Items]
Ownership percentage		50.00%