Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Finite-Lived Intangible Assets

The estimated useful lives of the Company’s intangible assets are as follows:

Patents and licenses	3 – 11 years
Internal-use software	3 – 5 years
Developed technology	1 – 8 years
Customer relationships	1 – 6 years

Information related to intangible assets is as follows:

	As of March 31,
	Gross Carrying Amount				Accumulated Amortization				Net Carrying Value				Weighted Average Remaining Life
(in millions except for years)	2026		2025		2026		2025		2026		2025		2026	2025
Patents & licenses	$	45	$	146	$	23	$	117	$	22	$	29	4.3	5.0
Developed technology	104		139		104		139		—		—		—	—
Internal-use software	450		356		255		234		195		122		2.9	2.1
Intangible assets subject to amortization	599		641		382		490		217		151
Intangible assets under development	13		—		—		—		13		—		—	—
Total intangible assets	$	612	$	641	$	382	$	490	$	230	$	151

Information regarding amortization expense for intangible assets is as follows:

	Fiscal Years Ended March 31,
(in millions)	2026		2025		2024
Cost of sales	$	2	$	2	$	6
Research and development	79		64		57
Selling, general and administrative	18		21		23
Total amortization expense	$	99	$	87	$	86

Schedule of Property and Equipment Useful Lives

Estimated useful lives of the Company’s property and equipment are as follows:

Leasehold improvements	Shorter of 5 – 10 years or the remaining lease term
Equipment	3 – 7 years
Fixtures and vehicles	3 – 5 years

Information regarding property and equipment, net is as follows:

	As of
(in millions)	March 31, 2026		March 31, 2025
Leasehold improvements	$	218	$	167
Equipment	914		545
Fixtures and vehicles	63		47
Construction in progress	129		41
Total property and equipment, gross	1,324		800
Less: Accumulated depreciation	(552)		(446)
Total property and equipment, net	$	772	$	354