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Related Party Balances and Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Related Party Transaction [Line Items]
Revenues	$ 308,951	$ 276,711	$ 263,966
International
Related Party Transaction [Line Items]
Revenues	$ 14,130	$ 20,598	36,345
Investee | International
Related Party Transaction [Line Items]
Revenues			137
Investee | U.S. Pharmaceutical and Specialty Solutions
Related Party Transaction [Line Items]
Revenues			$ 100

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