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Restructuring, Impairment, and Related Charges, Net - Summary of Restructuring Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Restructuring Reserve [Roll Forward]
Beginning balance	$ 92
Restructuring, impairment, and related charges, net	52	$ 23
Non-cash charges	(28)
Cash payments	(37)
Other	(5)
Ending balance	74
Operating Segments | U.S. Pharmaceutical
Restructuring Reserve [Roll Forward]
Beginning balance	15
Restructuring, impairment, and related charges, net	2	4
Non-cash charges	0
Cash payments	(5)
Other	0
Ending balance	12
Operating Segments | Prescription Technology Solutions
Restructuring Reserve [Roll Forward]
Beginning balance	26
Restructuring, impairment, and related charges, net	2	7
Non-cash charges	0
Cash payments	(13)
Other	0
Ending balance	15
Operating Segments | Medical-Surgical Solutions
Restructuring Reserve [Roll Forward]
Beginning balance	3
Restructuring, impairment, and related charges, net	2	1
Non-cash charges	0
Cash payments	(2)
Other	0
Ending balance	3
Operating Segments | International
Restructuring Reserve [Roll Forward]
Beginning balance	13
Restructuring, impairment, and related charges, net	6	2
Non-cash charges	(1)
Cash payments	(2)
Other	(5)
Ending balance	11
Corporate
Restructuring Reserve [Roll Forward]
Beginning balance	35
Restructuring, impairment, and related charges, net	40	$ 9
Non-cash charges	(27)
Cash payments	(15)
Other	0
Ending balance	33
Accrued Liabilities
Restructuring Reserve [Roll Forward]
Beginning balance	66
Ending balance	44
Other Non-Current Liabilities
Restructuring Reserve [Roll Forward]
Beginning balance	26
Ending balance	$ 30

X

- Definition

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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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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