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Goodwill and Intangible Assets, Net - Schedule of Changes in the Carrying Amount of Goodwill (Details) $ in Millions	6 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 9,947
Foreign currency translation adjustments, net	(6)
Other adjustments	(7)
Ending balance	9,934
U.S. Pharmaceutical
Goodwill [Roll Forward]
Beginning balance	4,050
Foreign currency translation adjustments, net	0
Other adjustments	(7)
Ending balance	4,043
Prescription Technology Solutions
Goodwill [Roll Forward]
Beginning balance	2,005
Foreign currency translation adjustments, net	0
Other adjustments	0
Ending balance	2,005
Medical-Surgical Solutions
Goodwill [Roll Forward]
Beginning balance	2,453
Foreign currency translation adjustments, net	0
Other adjustments	0
Ending balance	2,453
International
Goodwill [Roll Forward]
Beginning balance	1,439
Foreign currency translation adjustments, net	(6)
Other adjustments	0
Ending balance	$ 1,433

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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