Goodwill and Intangible Assets - Schedule of Amortization of Intangibles (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense related to intangible assets included in depreciation and amortization	$ 82	$ 83	$ 73

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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