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Segments of Business - Schedule of Long-lived Assets By Geographic Areas (Details) - USD ($) $ in Millions	Jun. 30, 2026	Mar. 31, 2026
Segment Reporting [Line Items]
Total long-lived assets	$ 3,429	$ 3,432
United States
Segment Reporting [Line Items]
Total long-lived assets	3,185	3,177
Foreign
Segment Reporting [Line Items]
Total long-lived assets	$ 244	$ 255

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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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