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Related Party Balances and Transactions (Details) - Investee - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
International
Related Party Transaction [Line Items]
Revenue from related parties	$ 137	$ 178
U.S. Pharmaceutical and Specialty Solutions
Related Party Transaction [Line Items]
Revenue from related parties	$ 100	$ 111

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+ References

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section S99
-Paragraph 1B
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Publisher FASB
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-Section S99
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-Publisher FASB
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