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Business Acquisitions and Divestitures - Schedule of Preliminary Purchase Price Allocation (Core Ventures) (Details) - USD ($) $ in Millions	Jun. 02, 2025	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Identifiable assets acquired and liabilities assumed:
Goodwill		$ 11,316	$ 10,022	$ 10,132
Core Ventures
Purchase consideration
Cash and other considerations	$ 2,481
Redeemable noncontrolling interests	700
Estimated fair value of total consideration	3,181
Identifiable assets acquired and liabilities assumed:
Current assets	529
Intangible assets	2,310
Other non-current assets	359
Total assets	3,198
Current liabilities	464
Non-current liabilities	328
Net identifiable assets	2,406
Goodwill	775		$ 806
Net assets acquired	$ 3,181

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