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Restructuring, Impairment, and Related Charges, Net - Summary of Activity Related to Restructuring Liability (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Cost Alignment Plan
Beginning balance	$ 130	$ 151
Restructuring, impairment, and related charges, net	209	245	$ 219
Non-cash charges	(72)	(139)
Cash payments	(115)	(87)
Other	(60)	(40)
Ending balance	92	130	151
Operating Segments | U.S. Pharmaceutical
Cost Alignment Plan
Beginning balance	11	19
Restructuring, impairment, and related charges, net	38	35	21
Non-cash charges	(25)	(18)
Cash payments	(9)	(18)
Other	0	(7)
Ending balance	15	11	19
Operating Segments | Prescription Technology Solutions
Cost Alignment Plan
Beginning balance	3	4
Restructuring, impairment, and related charges, net	43	25	4
Non-cash charges	(13)	(20)
Cash payments	(7)	(6)
Other	0	0
Ending balance	26	3	4
Operating Segments | Medical-Surgical Solutions
Cost Alignment Plan
Beginning balance	1	3
Restructuring, impairment, and related charges, net	10	9	4
Non-cash charges	(5)	(5)
Cash payments	(3)	(6)
Other	0	0
Ending balance	3	1	3
Operating Segments | International
Cost Alignment Plan
Beginning balance	56	66
Restructuring, impairment, and related charges, net	35	76	85
Non-cash charges	(10)	(35)
Cash payments	(10)	(28)
Other	(58)	(23)
Ending balance	13	56	66
Corporate
Cost Alignment Plan
Beginning balance	59	59
Restructuring, impairment, and related charges, net	83	100	105
Non-cash charges	(19)	(61)
Cash payments	(86)	(29)
Other	(2)	(10)
Ending balance	35	59	$ 59
Other Accrued Liabilities
Cost Alignment Plan
Ending balance	66
Other noncurrent liabilities
Cost Alignment Plan
Beginning balance	36
Ending balance	26	36
Disposal Group, Including Discontinued Operation, Liabilities, Current
Cost Alignment Plan
Beginning balance	36
Ending balance		36
Other accrued liabilities
Cost Alignment Plan
Beginning balance	$ 58
Ending balance		$ 58

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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